TWI864815B - Charging control device and charging control method - Google Patents

A charging control device and a charging control method are provided. The charging control device includes a first configuration channel（CC） circuit, a second CC circuit, a first switch circuit, a power controller and an embedded controller （EC）. The first CC circuit has a first CC pin pulled high to a first voltage. The second CC circuit has a second CC pin pulled high to the first voltage. The first switch circuit is coupled to a path where the second CC pin receives the first voltage. The first switch circuit is controlled by a control signal. The power controller detects voltages at the first CC pin and the second CC pin to generate a detect signal. The EC generates the control signal according to the detect signal, such that a charging operation is continued accordingly.

充電控制裝置以及充電控制方法Charging control device and charging control method

本發明是有關於一種控制裝置，且特別是有關於一種充電控制裝置以及充電控制方法。The present invention relates to a control device, and more particularly to a charging control device and a charging control method.

C型通用串列匯流排（Universal Serial Bus Type-C，以下稱為USB Type-C）可以被廣泛地應用在各種傳輸介面。一般而言，行動電源（Power bank）可以透過應用A型USB轉接至USB Type-C（即，USB Type-A-to-USB Type-C）的傳輸線對電子裝置充電。行動電源與電子裝置之間可經由一組配置通道（Configuration Channel，CC）來相互溝通以進行充電。然而，當傳輸線無法被識別為正插或反插時，此組配置通道則無法完成溝通，以致於行動電源無法對電子裝置充電。Universal Serial Bus Type-C (hereinafter referred to as USB Type-C) can be widely used in various transmission interfaces. Generally speaking, a power bank can charge electronic devices through a transmission line that uses a USB Type-A adapter to USB Type-C (i.e., USB Type-A-to-USB Type-C). The power bank and the electronic device can communicate with each other through a set of configuration channels (CC) for charging. However, when the transmission line cannot be identified as being inserted forward or backward, this set of configuration channels cannot complete the communication, so that the power bank cannot charge the electronic device.

本發明實施例提供一種充電控制裝置，能夠完成配置通道的溝通以續行充電操作。The embodiment of the present invention provides a charging control device that can complete the communication of the configuration channel to continue the charging operation.

本發明實施例的充電控制裝置包括第一配置通道電路、第二配置通道電路、第一開關電路、電源控制器以及內嵌控制器。第一配置通道電路具有被拉高至第一電壓的第一配置通道腳位。第二配置通道電路具有被拉高至第一電壓的第二配置通道腳位。第一開關電路耦接在第二配置通道腳位接收第一電壓的路徑之間。第一開關電路受控於控制信號。電源控制器耦接第一配置通道電路以及第二配置通道電路。電源控制器偵測第一配置通道腳位以及第二配置通道腳位上的電壓以生成偵測信號。內嵌控制器耦接第一開關電路以及電源控制器。內嵌控制器根據偵測信號生成控制信號。The charging control device of the embodiment of the present invention includes a first configuration channel circuit, a second configuration channel circuit, a first switch circuit, a power controller and an embedded controller. The first configuration channel circuit has a first configuration channel pin pulled up to a first voltage. The second configuration channel circuit has a second configuration channel pin pulled up to the first voltage. The first switch circuit is coupled between the paths where the second configuration channel pin receives the first voltage. The first switch circuit is controlled by a control signal. The power controller couples the first configuration channel circuit and the second configuration channel circuit. The power controller detects the voltages on the first configuration channel pin and the second configuration channel pin to generate a detection signal. The embedded controller couples the first switch circuit and the power controller. The embedded controller generates a control signal based on the detection signal.

本發明實施例另提供一種充電控制方法。充電控制方法包括以下的步驟。第一配置通道電路的第一配置通道腳位上的電壓被拉高至第一電壓。第二配置通道電路的第二配置通道腳位上的電壓被拉高至第一電壓。透過電源控制器偵測第一配置通道腳位以及第二配置通道腳位上的電壓以生成偵測信號。透過內嵌控制器根據偵測信號生成控制信號。透過內嵌控制器根據控制信號控制第一開關電路。第一開關電路耦接在第二配置通道腳位接收第一電壓的路徑之間。The embodiment of the present invention further provides a charging control method. The charging control method includes the following steps. The voltage on the first configuration channel pin of the first configuration channel circuit is pulled up to the first voltage. The voltage on the second configuration channel pin of the second configuration channel circuit is pulled up to the first voltage. The voltage on the first configuration channel pin and the second configuration channel pin is detected by a power controller to generate a detection signal. A control signal is generated according to the detection signal by an embedded controller. The first switch circuit is controlled by the embedded controller according to the control signal. The first switch circuit is coupled between the paths of receiving the first voltage at the second configuration channel pin.

基於上述，本發明實施例的充電控制裝置以及充電控制方法透過控制第一開關電路，能夠在第一配置通道腳位被拉高的同時，停止第二配置通道腳位被拉高。如此一來，第一配置通道腳位以及第二配置通道腳位上的電壓能夠滿足溝通規範，以續行充電控制裝置與外部裝置之間的充電操作。Based on the above, the charging control device and the charging control method of the embodiment of the present invention can stop the second configuration channel pin from being pulled high while the first configuration channel pin is pulled high by controlling the first switch circuit. In this way, the voltages on the first configuration channel pin and the second configuration channel pin can meet the communication specification to continue the charging operation between the charging control device and the external device.

為讓本發明的上述特徵和優點能更明顯易懂，下文特舉實施例，並配合所附圖式作詳細說明如下。In order to make the above features and advantages of the present invention more clearly understood, embodiments are specifically cited below and described in detail with reference to the accompanying drawings.

本發明的部份實施例接下來將會配合附圖來詳細描述，以下的描述所引用的元件符號，當不同附圖出現相同的元件符號將視為相同或相似的元件。這些實施例只是本發明的一部份，並未揭示所有本發明的可實施方式。更確切的說，這些實施例只是本發明的專利申請範圍中的範例。Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. When the same element symbols appear in different drawings, they will be regarded as the same or similar elements. These embodiments are only part of the present invention and do not disclose all possible implementations of the present invention. More precisely, these embodiments are only examples within the scope of the patent application of the present invention.

圖1是依據本發明一實施例所繪示的充電控制裝置的方塊圖。參考圖1，充電控制裝置100可應用USB Type-C的傳輸規範。充電控制裝置100可耦接外部裝置（未繪示），以透過外部裝置對充電控制裝置100進行充電。外部裝置可例如是行動電源。充電控制裝置100可例如是手機、平板電腦、筆記型電腦以及桌上型電腦等電子裝置。FIG. 1 is a block diagram of a charging control device according to an embodiment of the present invention. Referring to FIG. 1 , the charging control device 100 may apply the transmission specification of USB Type-C. The charging control device 100 may be coupled to an external device (not shown) to charge the charging control device 100 through the external device. The external device may be, for example, a mobile power supply. The charging control device 100 may be, for example, an electronic device such as a mobile phone, a tablet computer, a laptop computer, and a desktop computer.

在本實施例中，充電控制裝置100可包括第一配置通道電路110、第二配置通道電路120、電源控制器130、內嵌控制器（Embedded controller，EC）140、以及第一開關電路150。電源控制器130耦接第一配置通道電路110、第二配置通道電路120以及內嵌控制器140。內嵌控制器140還耦接第一開關電路150。In this embodiment, the charging control device 100 may include a first configuration channel circuit 110, a second configuration channel circuit 120, a power controller 130, an embedded controller (EC) 140, and a first switch circuit 150. The power controller 130 is coupled to the first configuration channel circuit 110, the second configuration channel circuit 120, and the embedded controller 140. The embedded controller 140 is also coupled to the first switch circuit 150.

在本實施例中，第一配置通道電路110具有第一配置通道腳位CC1。第二配置通道電路120具有第二配置通道腳位CC2。第一配置通道腳位CC1以及第二配置通道腳位CC2可作為一組配置通道腳位。此組配置通道腳位CC1、CC2可與外部裝置中的另一組配置通道腳位相互溝通，以在USB Type-C的傳輸規範下協議充電。在本實施例中，第一配置通道電路110可接收第一電壓V1。第二配置通道電路120可透過第一開關電路150接收第一電壓V1。In the present embodiment, the first configuration channel circuit 110 has a first configuration channel pin CC1. The second configuration channel circuit 120 has a second configuration channel pin CC2. The first configuration channel pin CC1 and the second configuration channel pin CC2 can be used as a set of configuration channel pins. This set of configuration channel pins CC1 and CC2 can communicate with another set of configuration channel pins in an external device to negotiate charging under the transmission specification of USB Type-C. In the present embodiment, the first configuration channel circuit 110 can receive a first voltage V1. The second configuration channel circuit 120 can receive the first voltage V1 through the first switch circuit 150.

在本實施例中，第一開關電路150耦接在第二配置通道腳位CC2接收第一電壓V1的路徑之間。第一開關電路150可受控於來自內嵌控制器140的控制信號S2。In this embodiment, the first switch circuit 150 is coupled between the paths of the second configuration channel pin CC2 receiving the first voltage V1. The first switch circuit 150 can be controlled by a control signal S2 from the embedded controller 140.

在本實施例中，電源控制器130可例如是供電（Power Delivery，PD）控制器。電源控制器130可包括訊號轉換器、現場可程式設計邏輯閘陣列（Field Programmable Gate Array，FPGA）、中央處理單元（Central Processing Unit，CPU），或是其他可程式設計之一般用途或特殊用途的微處理器（Microprocessor）、數位訊號處理器（Digital Signal Processor，DSP）、可程式化控制器、特殊應用積體電路（Application Specific Integrated Circuits，ASIC）、可程式設計邏輯裝置（Programmable Logic Device，PLD）或其他類似裝置或這些裝置的組合，其可載入並執行電腦程式相關韌體或軟體，以實現偵測、計算、以及執行等功能。In this embodiment, the power controller 130 may be, for example, a power delivery (PD) controller. The power controller 130 may include a signal converter, a field programmable gate array (FPGA), a central processing unit (CPU), or other programmable general-purpose or special-purpose microprocessors (Microprocessors), digital signal processors (DSPs), programmable controllers, application specific integrated circuits (ASICs), programmable logic devices (PLDs), or other similar devices or combinations of these devices, which can load and execute computer program-related firmware or software to implement detection, calculation, and execution functions.

圖2是依據本發明一實施例所繪示的充電控制方法的流程圖。參考圖1以及圖2，充電控制裝置100可執行步驟S210~S250。這些步驟S210~S250的順序僅為示例說明，並不以此為限。在本實施例中，步驟S210~S250可以應用於下述示例性的情況。FIG. 2 is a flow chart of a charging control method according to an embodiment of the present invention. Referring to FIG. 1 and FIG. 2 , the charging control device 100 can execute steps S210 to S250. The order of these steps S210 to S250 is only for illustrative purposes and is not limited thereto. In this embodiment, steps S210 to S250 can be applied to the following exemplary situations.

在本實施例中，充電控制裝置100耦接外部裝置以開始進行充電。充電控制裝置100被應用作為USB裝置（USB device）（或吸端裝置（sink device））。外部裝置被應用作為USB主機（USB host）（或源端裝置（source device））。也就是說，第一配置通道電路110以及第二配置通道電路120被應用作為下行埠（Downstream Facing Port，DFP），並且外部裝置的另一組配置通道腳位被應用作為上行埠（Upstream Facing Port，UFP）。In this embodiment, the charging control device 100 is coupled to an external device to start charging. The charging control device 100 is applied as a USB device (or a sink device). The external device is applied as a USB host (or a source device). That is, the first configuration channel circuit 110 and the second configuration channel circuit 120 are applied as a downstream facing port (DFP), and another set of configuration channel pins of the external device is applied as an upstream facing port (UFP).

在本實施例中，當第一配置通道電路110以及第二配置通道電路120被應用作為下行埠時，第一配置通道腳位CC1以及第二配置通道腳位CC2分別被拉高至第一電壓V1。In this embodiment, when the first configuration channel circuit 110 and the second configuration channel circuit 120 are applied as downstream ports, the first configuration channel pin CC1 and the second configuration channel pin CC2 are respectively pulled high to the first voltage V1.

詳細而言，在步驟S210，第一配置通道電路110受控於電源控制器130以使第一配置通道腳位CC1上的電壓VCC1被拉高至第一電壓V1。在步驟S220，第二配置通道電路120受控於電源控制器130以使第二配置通道腳位CC2上的電壓VCC2被拉高至第一電壓V1。Specifically, in step S210, the first configuration channel circuit 110 is controlled by the power controller 130 so that the voltage VCC1 on the first configuration channel pin CC1 is pulled up to the first voltage V1. In step S220, the second configuration channel circuit 120 is controlled by the power controller 130 so that the voltage VCC2 on the second configuration channel pin CC2 is pulled up to the first voltage V1.

在本實施例中，在充電控制裝置100接上外部裝置後，第一配置通道腳位CC1以及第二配置通道腳位CC2分別接上外部裝置的多個配置通道腳位，以在這些配置通道腳位CC1、CC2上形成對應的分壓VCC1、VCC2。In this embodiment, after the charging control device 100 is connected to an external device, the first configuration channel pin CC1 and the second configuration channel pin CC2 are respectively connected to multiple configuration channel pins of the external device to form corresponding divided voltages VCC1 and VCC2 on these configuration channel pins CC1 and CC2.

在步驟S230，電源控制器130偵測第一配置通道腳位CC1以及第二配置通道腳位CC2上的電壓VCC1、VCC2以生成偵測信號S1。在本實施例中，偵測信號S1可例如是指示配置通道腳位CC1、CC2上的電壓VCC1、VCC2是否異常並且是否屬於可被排除異常的狀態。In step S230, the power controller 130 detects the voltages VCC1 and VCC2 on the first configuration channel pin CC1 and the second configuration channel pin CC2 to generate a detection signal S1. In this embodiment, the detection signal S1 may, for example, indicate whether the voltages VCC1 and VCC2 on the configuration channel pins CC1 and CC2 are abnormal and whether they are in a state where the abnormality can be excluded.

在步驟S240，內嵌控制器140根據偵測信號S1生成控制信號S2。在步驟S250，第一開關電路150受控於內嵌控制器140所輸出的控制信號S2，以使第一開關電路150根據控制信號S2來進行開關操作。也就是說，內嵌控制器140根據多個配置通道腳位CC1、CC2的異常狀況生成控制信號S2。內嵌控制器140根據控制信號S2控制第一開關電路150，以透過切換第一開關電路150來排除異常。In step S240, the embedded controller 140 generates a control signal S2 according to the detection signal S1. In step S250, the first switch circuit 150 is controlled by the control signal S2 output by the embedded controller 140, so that the first switch circuit 150 performs a switching operation according to the control signal S2. In other words, the embedded controller 140 generates the control signal S2 according to the abnormal conditions of the plurality of configuration channel pins CC1 and CC2. The embedded controller 140 controls the first switch circuit 150 according to the control signal S2, so as to eliminate the abnormality by switching the first switch circuit 150.

值得一提的是，由於第一開關電路150被設置在第二配置通道腳位CC2以及第一電壓V1的路徑之間，因此當第一開關電路150根據控制信號S2而被切換時，能夠切換（例如是切斷）此路徑以停止第二配置通道腳位CC2的電壓被拉高。如此一來，第一配置通道腳位CC1可維持被拉高的分壓VCC1，並且第二配置通道腳位CC2的電壓VCC2可同時被調整，據以滿足在USB Type-C的傳輸規範下的溝通協議，而能夠續行充電控制裝置100與外部裝置之間的充電操作。It is worth mentioning that, since the first switch circuit 150 is disposed between the second configuration channel pin CC2 and the path of the first voltage V1, when the first switch circuit 150 is switched according to the control signal S2, the path can be switched (e.g., cut off) to stop the voltage of the second configuration channel pin CC2 from being pulled high. In this way, the first configuration channel pin CC1 can maintain the pulled-up divided voltage VCC1, and the voltage VCC2 of the second configuration channel pin CC2 can be adjusted at the same time, thereby satisfying the communication protocol under the transmission specification of the USB Type-C, and the charging operation between the charging control device 100 and the external device can be continued.

圖3是依據本發明一實施例所繪示的充電控制裝置的電路圖。參考圖3，充電控制裝置300可包括第一配置通道電路310、第二配置通道電路320、電源控制器330、內嵌控制器340、第一開關電路350、以及供電電路360。第一配置通道電路310、第二配置通道電路320、電源控制器330、內嵌控制器340、以及第一開關電路350可以參照充電控制裝置100的相關說明並加以類推。在本實施例中，第一配置通道電路310、第二配置通道電路320、以及供電電路360可被設置在充電控制裝置300的外接埠中。外接埠可例如是USB Type-C埠。FIG3 is a circuit diagram of a charging control device according to an embodiment of the present invention. Referring to FIG3 , the charging control device 300 may include a first configuration channel circuit 310, a second configuration channel circuit 320, a power controller 330, an embedded controller 340, a first switch circuit 350, and a power supply circuit 360. The first configuration channel circuit 310, the second configuration channel circuit 320, the power controller 330, the embedded controller 340, and the first switch circuit 350 may refer to the relevant description of the charging control device 100 and be deduced by analogy. In this embodiment, the first configuration channel circuit 310, the second configuration channel circuit 320, and the power supply circuit 360 may be disposed in an external port of the charging control device 300. The external port may be, for example, a USB Type-C port.

在本實施例中，第一配置通道電路310可包括第一配置通道腳位CC1、第一上拉電阻Rp1、第一下拉電阻Rd1、以及切換開關電路311。第一上拉電阻Rp1的第一端接收第一電壓V1。第一上拉電阻Rp1的第二端透過切換開關電路311耦接第一配置通道腳位CC1。第一下拉電阻Rd1的第一端接收第二電壓（例如是接地GND）。第一下拉電阻Rd1的第二端透過切換開關電路311耦接第一配置通道腳位CC1。In this embodiment, the first configuration channel circuit 310 may include a first configuration channel pin CC1, a first pull-up resistor Rp1, a first pull-down resistor Rd1, and a switching circuit 311. A first end of the first pull-up resistor Rp1 receives a first voltage V1. A second end of the first pull-up resistor Rp1 is coupled to the first configuration channel pin CC1 through the switching circuit 311. A first end of the first pull-down resistor Rd1 receives a second voltage (e.g., ground GND). A second end of the first pull-down resistor Rd1 is coupled to the first configuration channel pin CC1 through the switching circuit 311.

在本實施例中，切換開關電路311可包括第一切換開關SW1以及第二切換開關SW2。第一切換開關SW1的第一端耦接第一配置通道腳位CC1。第一切換開關SW1的第二端選擇性地耦接電源電壓VCONN，或者第二切換開關SW2的第一端。第二切換開關SW2的第二端選擇性地耦接第一上拉電阻Rp1的第二端，或者第一下拉電阻Rd1的第二端。In this embodiment, the switch circuit 311 may include a first switch SW1 and a second switch SW2. A first end of the first switch SW1 is coupled to the first configuration channel pin CC1. A second end of the first switch SW1 is selectively coupled to the power voltage VCONN or the first end of the second switch SW2. A second end of the second switch SW2 is selectively coupled to the second end of the first pull-up resistor Rp1 or the second end of the first pull-down resistor Rd1.

在本實施例中，第二配置通道電路320可包括第二配置通道腳位CC2、第二上拉電阻Rp2、第二下拉電阻Rd2、以及切換開關電路321。第二上拉電阻Rp2的第一端耦接第一開關電路350的第一端，以透過第一開關電路350接收第一電壓V1。第二上拉電阻Rp2的第二端透過切換開關電路321耦接第二配置通道腳位CC2。第二下拉電阻Rd2的第一端接收第二電壓例如是接地GND）。第二下拉電阻Rd2的第二端透過切換開關電路321耦接第二配置通道腳位CC2。In the present embodiment, the second configuration channel circuit 320 may include a second configuration channel pin CC2, a second pull-up resistor Rp2, a second pull-down resistor Rd2, and a switching circuit 321. A first end of the second pull-up resistor Rp2 is coupled to a first end of the first switching circuit 350 to receive a first voltage V1 through the first switching circuit 350. A second end of the second pull-up resistor Rp2 is coupled to the second configuration channel pin CC2 through the switching circuit 321. A first end of the second pull-down resistor Rd2 receives a second voltage (e.g., ground GND). A second end of the second pull-down resistor Rd2 is coupled to the second configuration channel pin CC2 through the switching circuit 321.

在本實施例中，切換開關電路321可包括第三切換開關SW3以及第四切換開關SW4。第三切換開關SW3的第一端耦接第二配置通道腳位CC2。第三切換開關SW3的第二端選擇性地耦接電源電壓VCONN，或者第四切換開關SW4的第一端。第四切換開關SW4的第二端選擇性地耦接第二上拉電阻Rp2的第二端，或者第二下拉電阻Rd2的第二端。In this embodiment, the switch circuit 321 may include a third switch SW3 and a fourth switch SW4. A first end of the third switch SW3 is coupled to the second configuration channel pin CC2. A second end of the third switch SW3 is selectively coupled to the power voltage VCONN or the first end of the fourth switch SW4. A second end of the fourth switch SW4 is selectively coupled to the second end of the second pull-up resistor Rp2 or the second end of the second pull-down resistor Rd2.

在本實施例中，第一開關電路350可包括開關351。開關351的第一端耦接第二上拉電阻Rp2的第一端。開關351的第二端接收第一電壓V1。In this embodiment, the first switch circuit 350 may include a switch 351. A first terminal of the switch 351 is coupled to a first terminal of the second pull-up resistor Rp2. A second terminal of the switch 351 receives the first voltage V1.

在本實施例中，供電電路360耦接電源控制器330。供電電路360具有供電通道腳位VBUS。供電通道腳位VBUS可與外部裝置中的對應的腳位耦接，以在協議充電後傳輸電能。In this embodiment, the power supply circuit 360 is coupled to the power controller 330. The power supply circuit 360 has a power supply channel pin VBUS. The power supply channel pin VBUS can be coupled to a corresponding pin in an external device to transmit power after protocol charging.

在一些實施例中，充電控制裝置300還可包括第二開關電路。第二開關電路耦接在第一配置通道腳位CC1接收第一電壓V1的路徑之間。第二開關電路可受控於來自內嵌控制器340的控制信號S2，以使第二開關電路根據控制信號S2來進行開關操作。第二開關電路可以參照第一開關電路350的相關說明並加以類推。In some embodiments, the charging control device 300 may further include a second switch circuit. The second switch circuit is coupled between the paths of the first configuration channel pin CC1 receiving the first voltage V1. The second switch circuit may be controlled by a control signal S2 from the embedded controller 340, so that the second switch circuit performs a switching operation according to the control signal S2. The second switch circuit may refer to the relevant description of the first switch circuit 350 and be analogous thereto.

圖4是依據本發明圖3實施例所繪示的充電控制方法的流程圖。參考圖3以及圖4，充電控制裝置300可執行步驟S410~S440。這些步驟S410~S440的順序僅為示例說明，並不以此為限。在本實施例中，步驟S410~S440可以應用於當外部裝置應用作為USB主機以透過USB Type-C埠對充電控制裝置300充電的示例性情況。FIG. 4 is a flow chart of a charging control method according to the embodiment of FIG. 3 of the present invention. Referring to FIG. 3 and FIG. 4 , the charging control device 300 may execute steps S410 to S440. The order of these steps S410 to S440 is only for example and is not limited thereto. In this embodiment, steps S410 to S440 may be applied to an exemplary situation when an external device is applied as a USB host to charge the charging control device 300 through a USB Type-C port.

在步驟S410，外部裝置插入充電控制裝置300的USB Type-C埠。充電控制裝置300透過電源控制器330判斷外部裝置相對於USB Type-C埠的正反插狀態是否可以被確認。In step S410, an external device is plugged into the USB Type-C port of the charging control device 300. The charging control device 300 determines whether the forward and reverse insertion status of the external device relative to the USB Type-C port can be confirmed through the power controller 330.

詳細而言，電源控制器330預設第一配置通道電路310以及第二配置通道電路320被應用作為下行埠。開關電路311受控於電源控制器330所輸出的切換信號（未繪示），以使第一切換開關SW1耦接在第一配置通道腳位CC1以及電源控制器330之間，並且第二切換開關SW2耦接在第一配置通道腳位CC1以及第一上拉電阻Rp1之間。此外，開關電路321受控於切換信號，以使第三切換開關SW3耦接在第二配置通道腳位CC2以及電源控制器330之間，並且第四切換開關SW4耦接在第二配置通道腳位CC2以及第二上拉電阻Rp2之間。In detail, the power controller 330 presets the first configuration channel circuit 310 and the second configuration channel circuit 320 to be applied as downstream ports. The switch circuit 311 is controlled by a switching signal (not shown) output by the power controller 330, so that the first switch SW1 is coupled between the first configuration channel pin CC1 and the power controller 330, and the second switch SW2 is coupled between the first configuration channel pin CC1 and the first pull-up resistor Rp1. In addition, the switch circuit 321 is controlled by the switching signal, so that the third switch SW3 is coupled between the second configuration channel pin CC2 and the power controller 330, and the fourth switch SW4 is coupled between the second configuration channel pin CC2 and the second pull-up resistor Rp2.

接續上述的說明，第一配置通道腳位CC1以及第二配置通道腳位CC2分別耦接外部裝置而形成對應的電壓VCC1、VCC2。電源控制器330獲取這些配置通道腳位CC1、CC2上的電壓VCC1、VCC2。電源控制器330根據這些電壓VCC1、VCC2判斷外部裝置相對於USB Type-C埠的正反插狀態。電壓VCC1、VCC2與正反插狀態的對應關係如以下表（1）所示。Continuing with the above description, the first configuration channel pin CC1 and the second configuration channel pin CC2 are respectively coupled to the external device to form corresponding voltages VCC1 and VCC2. The power controller 330 obtains the voltages VCC1 and VCC2 on these configuration channel pins CC1 and CC2. The power controller 330 determines the forward and reverse plug-in status of the external device relative to the USB Type-C port based on these voltages VCC1 and VCC2. The corresponding relationship between the voltages VCC1 and VCC2 and the forward and reverse plug-in status is shown in the following table (1).

表（1）： 情境1 充電電流 情境2 VCC1(V) VCC2(V) VCC1(V) VCC2(V) 0.41 0 0.5A/0.9A 0 0.41 0.92 0 1.5A 0 0.92 1.68 0 3A 0 1.68 0.41 0.41 無法充電 0.41 0.41 0.92 0.92 0.92 0.92 1.68 1.68 1.68 1.68 Table (1): Scenario 1 Charging current Scenario 2 VCC1(V) VCC2(V) VCC1(V) VCC2(V) 0.41 0 0.5A/0.9A 0 0.41 0.92 0 1.5A 0 0.92 1.68 0 3A 0 1.68 0.41 0.41 Unable to charge 0.41 0.41 0.92 0.92 0.92 0.92 1.68 1.68 1.68 1.68

在本實施例中，當第一配置通道腳位CC1以及第二配置通道腳位CC2上的電壓VCC1、VCC2為正常時，表示電源控制器330能夠判斷正反插狀態。舉例來說，在情境1中，當電壓VCC1的電壓值大於0並且電壓VCC2的電壓值等於0時，電源控制器330判斷正反插狀態為正插，並且可提供對應的電流值來進行充電。在情境2中，當電壓VCC1的電壓值等於0並且電壓VCC2的電壓值大於0時，電源控制器330判斷正反插狀態為反插，並且可提供對應的電流值來進行充電。In this embodiment, when the voltages VCC1 and VCC2 on the first configuration channel pin CC1 and the second configuration channel pin CC2 are normal, it means that the power controller 330 can determine the forward and reverse plugging state. For example, in scenario 1, when the voltage value of the voltage VCC1 is greater than 0 and the voltage value of the voltage VCC2 is equal to 0, the power controller 330 determines that the forward and reverse plugging state is forward plugging, and can provide a corresponding current value for charging. In scenario 2, when the voltage value of the voltage VCC1 is equal to 0 and the voltage value of the voltage VCC2 is greater than 0, the power controller 330 determines that the forward and reverse plugging state is reverse plugging, and can provide a corresponding current value for charging.

在另一方面，當第一配置通道腳位CC1以及第二配置通道腳位CC2上的電壓VCC1、VCC2為異常時，表示電源控制器330無法判斷正反插狀態。舉例來說，在情境1或情境2中，當電壓VCC1以及電壓VCC2分別的電壓值皆不為0且具有相同電壓值時，電源控制器330無法判斷正反插狀態為正插或者反插。On the other hand, when the voltages VCC1 and VCC2 on the first configuration channel pin CC1 and the second configuration channel pin CC2 are abnormal, it means that the power controller 330 cannot determine the forward and reverse plugging state. For example, in scenario 1 or scenario 2, when the voltage values of the voltage VCC1 and the voltage VCC2 are not 0 and have the same voltage value, the power controller 330 cannot determine whether the forward and reverse plugging state is forward plugging or reverse plugging.

也就是說，電源控制器330判斷第一配置通道腳位CC1以及第二配置通道腳位CC2上的電壓VCC1、VCC2是否異常，以判斷正反插狀態是否可以被確認。在本實施例中，當正反插狀態可以被確認時，充電控制裝置300執行步驟S440，以使充電控制裝置300正常充電。在另一方面，當正反插狀態無法被確認時，充電控制裝置300執行步驟S420，以使充電控制裝置300無法充電。That is, the power controller 330 determines whether the voltages VCC1 and VCC2 on the first configuration channel pin CC1 and the second configuration channel pin CC2 are abnormal to determine whether the forward and reverse plugging state can be confirmed. In this embodiment, when the forward and reverse plugging state can be confirmed, the charging control device 300 executes step S440 to enable the charging control device 300 to charge normally. On the other hand, when the forward and reverse plugging state cannot be confirmed, the charging control device 300 executes step S420 to disable the charging control device 300 from charging.

接著，在電壓VCC1、VCC2被判斷為異常時，充電控制裝置300接續執行步驟S431~S433，以判斷此異常是否可被排除並據以續行充電。Next, when the voltages VCC1 and VCC2 are judged to be abnormal, the charging control device 300 continues to execute steps S431 to S433 to determine whether the abnormality can be eliminated and to continue charging accordingly.

詳細而言，在步驟S431，電源控制器330判斷第一配置通道腳位CC1以及第二配置通道腳位CC2上的電壓VCC1、VCC2是否相同以生成偵測信號（例如是圖1的偵測信號S1）。在本實施例中，電壓VCC1以及電壓VCC2為相同，表示此些電壓VCC1、VCC2分別的電壓值皆不為0並且具有相同電壓值。此時，電源控制器330將第一配置通道腳位CC1中的第一上拉電阻Rp1錯認為第一下拉電阻Rd1，或者將第二配置通道腳位CC2中的第二上拉電阻Rp2錯認為第二下拉電阻Rd2。在本實施例中，步驟S420、S431可例如是步驟S230的實施細節。In detail, in step S431, the power controller 330 determines whether the voltages VCC1 and VCC2 on the first configuration channel pin CC1 and the second configuration channel pin CC2 are the same to generate a detection signal (e.g., the detection signal S1 of FIG. 1 ). In this embodiment, the voltage VCC1 and the voltage VCC2 are the same, indicating that the voltage values of these voltages VCC1 and VCC2 are not 0 and have the same voltage value. At this time, the power controller 330 misjudges the first pull-up resistor Rp1 in the first configuration channel pin CC1 as the first pull-down resistor Rd1, or misjudges the second pull-up resistor Rp2 in the second configuration channel pin CC2 as the second pull-down resistor Rd2. In this embodiment, steps S420 and S431 may be implementation details of step S230, for example.

在本實施例中，當正反插狀態無法被確認並且電壓VCC1以及電壓VCC2為相同時，表示此異常屬於可被排除的異常，並且充電控制裝置300執行步驟S432。在另一方面，當正反插狀態無法被確認並且電壓VCC1以及電壓VCC2為不相同時，充電控制裝置300停止溝通協議並且結束充電操作。In this embodiment, when the forward and reverse plugging state cannot be confirmed and the voltage VCC1 and the voltage VCC2 are the same, it indicates that this abnormality is an exception that can be eliminated, and the charging control device 300 executes step S432. On the other hand, when the forward and reverse plugging state cannot be confirmed and the voltage VCC1 and the voltage VCC2 are different, the charging control device 300 stops the communication protocol and ends the charging operation.

在步驟S432，電源控制器330輸出偵測信號至內嵌控制器340，以告知內嵌控制器340。在本實施例中，電源控制器330透過積體匯流排電路（Inter-Integrated Circuit，I2C）傳輸偵測信號至內嵌控制器340。In step S432, the power controller 330 outputs a detection signal to the embedded controller 340 to inform the embedded controller 340. In this embodiment, the power controller 330 transmits the detection signal to the embedded controller 340 via an Inter-Integrated Circuit (I2C).

在步驟S433，內嵌控制器340根據偵測信號生成控制信號S2以控制第一開關電路350，並據以拉低第二配置通道腳位CC2上的電壓VCC2。在本實施例中，內嵌控制器340透過通用型之輸入輸出（General-purpose input/output，GPIO）腳位輸出控制信號S2至開關351。在本實施例中，步驟S432~S433可例如是步驟S240~S250的實施細節。In step S433, the embedded controller 340 generates a control signal S2 according to the detection signal to control the first switch circuit 350, and accordingly pulls down the voltage VCC2 on the second configuration channel pin CC2. In this embodiment, the embedded controller 340 outputs the control signal S2 to the switch 351 through a general-purpose input/output (GPIO) pin. In this embodiment, steps S432-S433 may be, for example, implementation details of steps S240-S250.

具體來說，開關351受控於控制信號S2以被關斷，以切斷第二上拉電阻Rp2接收第一電壓V1的路徑。第二配置通道腳位CC2上的電壓VCC2透過外部裝置而被拉低（例如是被拉低至接地端），以使第一配置通道腳位CC1以及第二配置通道腳位CC2上的電壓VCC1、VCC2由異常轉換成正常。Specifically, the switch 351 is controlled by the control signal S2 to be turned off, so as to cut off the path of the second pull-up resistor Rp2 receiving the first voltage V1. The voltage VCC2 on the second configuration channel pin CC2 is pulled down (for example, pulled down to the ground end) through an external device, so that the voltages VCC1 and VCC2 on the first configuration channel pin CC1 and the second configuration channel pin CC2 are converted from abnormal to normal.

也就是說，內嵌控制器340強制停止第二配置通道腳位CC2接收第一電壓V1。此時，第一配置通道腳位CC1上的電壓VCC1維持在步驟S410中的電壓（即，非0的電壓值）。第二配置通道腳位CC2上的電壓VCC2停止被拉高，並且被拉低至接地端（即，0V）。因此，第一配置通道腳位CC1以及第二配置通道腳位CC2上的電壓VCC1、VCC2可例如是被調整為如表（1）中的情境1，屬於能夠判斷正反插狀態的正常狀態。充電控制裝置300接續執行S440以續行充電。That is, the embedded controller 340 forcibly stops the second configuration channel pin CC2 from receiving the first voltage V1. At this time, the voltage VCC1 on the first configuration channel pin CC1 maintains the voltage in step S410 (i.e., a non-zero voltage value). The voltage VCC2 on the second configuration channel pin CC2 stops being pulled up and is pulled down to the ground terminal (i.e., 0V). Therefore, the voltages VCC1 and VCC2 on the first configuration channel pin CC1 and the second configuration channel pin CC2 can be adjusted to, for example, scenario 1 as shown in Table (1), which is a normal state capable of determining the forward and reverse insertion state. The charging control device 300 continues to execute S440 to continue charging.

綜上所述，本發明實施例的充電控制裝置以及充電控制方法透過控制被設置在配置通道腳位以及第一電壓路徑之間的開關電路，能夠強制此配置通道腳位（例如是第二配置通道腳位）被拉低，以使多個配置通道腳位上的電壓能夠滿足在USB Type-C的傳輸規範下的溝通協議。因此，在充電控制裝置無法確認正反插狀態時，充電控制裝置能夠排除異常以續行充電控制裝置與外部裝置之間的充電操作。In summary, the charging control device and the charging control method of the embodiment of the present invention can force the configuration channel pin (for example, the second configuration channel pin) to be pulled down by controlling the switch circuit set between the configuration channel pin and the first voltage path, so that the voltage on multiple configuration channel pins can meet the communication protocol under the transmission specification of USB Type-C. Therefore, when the charging control device cannot confirm the forward and reverse insertion status, the charging control device can eliminate the abnormality and continue the charging operation between the charging control device and the external device.

雖然本發明已以實施例揭露如上，然其並非用以限定本發明，任何所屬技術領域中具有通常知識者，在不脫離本發明的精神和範圍內，當可作些許的更動與潤飾，故本發明的保護範圍當視後附的申請專利範圍所界定者為準。Although the present invention has been disclosed as above by the embodiments, they are not intended to limit the present invention. Any person with ordinary knowledge in the relevant technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be defined by the scope of the attached patent application.

100、300:充電控制裝置 110、310:第一配置通道電路 120、320:第二配置通道電路 130、330:電源控制器 140、340:內嵌控制器 150、350:第一開關電路 311、321:切換開關電路 351:開關 360:供電電路 CC1:第一配置通道腳位 CC2:第二配置通道腳位 GND:接地 Rd1:第一下拉電阻 Rd2:第二下拉電阻 Rp1:第一上拉電阻 Rp2:第二上拉電阻 S1:偵測信號 S2:控制信號 S210~S250、S410~S440:步驟 SW1~SW4:切換開關 V1:第一電壓 VBUS:供電通道腳位 VCC1:第一配置通道腳位上的電壓 VCC2:第二配置通道腳位上的電壓 VCONN:電源電壓 100, 300: charging control device 110, 310: first configuration channel circuit 120, 320: second configuration channel circuit 130, 330: power controller 140, 340: embedded controller 150, 350: first switch circuit 311, 321: switching switch circuit 351: switch 360: power supply circuit CC1: first configuration channel pin CC2: second configuration channel pin GND: ground Rd1: first pull-down resistor Rd2: second pull-down resistor Rp1: first pull-up resistor Rp2: second pull-up resistor S1: detection signal S2: control signal S210~S250, S410~S440: steps SW1~SW4: switching switch V1: First voltage VBUS: Power supply channel pin VCC1: Voltage on the first configuration channel pin VCC2: Voltage on the second configuration channel pin VCONN: Power supply voltage

圖1是依據本發明一實施例所繪示的充電控制裝置的方塊圖。 圖2是依據本發明一實施例所繪示的充電控制方法的流程圖。 圖3是依據本發明一實施例所繪示的充電控制裝置的電路圖。 圖4是依據本發明圖3實施例所繪示的充電控制方法的流程圖。 FIG. 1 is a block diagram of a charging control device according to an embodiment of the present invention. FIG. 2 is a flow chart of a charging control method according to an embodiment of the present invention. FIG. 3 is a circuit diagram of a charging control device according to an embodiment of the present invention. FIG. 4 is a flow chart of a charging control method according to the embodiment of FIG. 3 of the present invention.

100:充電控制裝置 100: Charging control device

110:第一配置通道電路 110: First configuration channel circuit

120:第二配置通道電路 120: Second configuration channel circuit

130:電源控制器 130: Power controller

140:內嵌控制器 140: Embedded controller

150:第一開關電路 150: First switch circuit

CC1:第一配置通道腳位 CC1: First configuration channel pin

CC2:第二配置通道腳位 CC2: Second configuration channel pin

S1:偵測信號 S1: Detection signal

S2:控制信號 S2: Control signal

V1:第一電壓 V1: first voltage

VCC1:第一配置通道腳位上的電壓 VCC1: Voltage on the first configuration channel pin

VCC2:第二配置通道腳位上的電壓 VCC2: Voltage on the second configuration channel pin