TWM629346U - Switching power supply system and fast charging protocol chip thereof - Google Patents
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Abstract
本創作的實施例提供了一種開關電源系統及其快充協議晶片，通過在晶片內部集成輸出模組、電流放大模組以及環路控制模組等，可以提高系統集成度，節約系統元器件，降低成本，有利於實現系統的小型化。 The embodiment of this creation provides a switching power supply system and a fast charging protocol chip. By integrating an output module, a current amplification module, and a loop control module in the chip, the system integration can be improved, and system components can be saved. The cost reduction is conducive to realizing the miniaturization of the system.
Description
本創作涉及積體電路領域，尤其涉及一種開關電源系統及其快充協議晶片。 This creation relates to the field of integrated circuits, in particular to a switching power supply system and its fast charging protocol chip.
近年來，隨著諸如智慧手機、平板電腦、筆記型電腦之類的移動設備的螢幕變大、處理器速度變快，移動設備的耗電變得很大。為了滿足使用者對移動設備的待機時間的要求，移動設備的供電電池的容量不斷增大。為了減少移動設備的供電電池的充電時間，移動設備的充電功率也相應地增大。但是，受限於通用序列匯流排(Universal Serial Bus，USB)的最大電流的物理限制，充電器只能以提高輸出電壓的方法來為移動設備提供更大的充電功率。 In recent years, as mobile devices such as smartphones, tablets, and laptops have larger screens and faster processors, the power consumption of mobile devices has become large. In order to meet the user's requirement for the standby time of the mobile device, the capacity of the power supply battery of the mobile device is constantly increasing. In order to reduce the charging time of the power supply battery of the mobile device, the charging power of the mobile device is correspondingly increased. However, due to the physical limitation of the maximum current of the Universal Serial Bus (USB), the charger can only provide greater charging power for the mobile device by increasing the output voltage.
USB協會正在向通用充電器的方向努力，即，這種充電器可以為具有各種不同的充電功率需求的設備充電。在現有技術中，由於用作這種充電器的交流/直流(Alternating Current，AC/Direct Current，DC)開關電源電路的回饋控制晶片的引腳數量較多、週邊補償元器件也較多等，導致其無法滿足小型化的需求。 The USB consortium is working toward a universal charger, that is, one that can charge devices with a variety of different charging power requirements. In the prior art, due to the large number of pins and peripheral compensation components of the feedback control chip of the AC/Direct Current (AC/Direct Current, DC) switching power supply circuit used as such a charger, As a result, it cannot meet the needs of miniaturization.
鑒於以上所述的一個或多個問題，本創作提供了一種開關電源系統及其快充協議晶片，通過在晶片內部集成輸出模組、電流放大模組以及環路控制模組等，可以提高系統集成度，節約系統元器件，降低成本，有利於實現系統的小型化。 In view of one or more of the above problems, this creation provides a switching power supply system and its fast charging protocol chip. By integrating an output module, a current amplification module and a loop control module inside the chip, the system can be improved. Integration, saving system components, reducing costs, and helping to achieve system miniaturization.
本創作的第一實施例提供了一種快充協議晶片，用於為待充電設備進行充電，包括晶片供電引腳、輸出引腳、光耦驅動引腳、輸出模組、電流放大模組、輸出電流回饋模組以及環路控制模組，其中：所述輸出模組的第一端子連接到所述晶片供電引腳、第二端子連接到所述輸出引腳，所述輸出模組中的開關電晶體在所述待充電設備滿足快充協議的情況下被導通；所述電流放 大模組的第一和第二端子連接到所述輸出模組的第三和第四端子；所述輸出電流回饋模組的第一端子連接到所述電流放大模組的第三端子；以及所述環路控制模組的第一端子連接到所述輸出電流回饋模組的第二端子，第二端子連接到所述光耦驅動引腳。 The first embodiment of this creation provides a fast charging protocol chip for charging a device to be charged, including chip power supply pins, output pins, optocoupler drive pins, output modules, current amplification modules, output A current feedback module and a loop control module, wherein: the first terminal of the output module is connected to the chip power supply pin, the second terminal is connected to the output pin, and the switch in the output module The transistor is turned on when the device to be charged satisfies the fast charging protocol; the current discharges The first and second terminals of the large module are connected to the third and fourth terminals of the output module; the first terminal of the output current feedback module is connected to the third terminal of the current amplification module; and The first terminal of the loop control module is connected to the second terminal of the output current feedback module, and the second terminal is connected to the optocoupler driving pin.
根據本創作的第一實施例提供的快充協議晶片，還包括分壓模組和輸出電壓回饋模組，其中：所述分壓模組的第一端子連接到所述晶片供電引腳，第二端子連接至參考地；以及所述輸出電壓回饋模組的第一端子連接到所述分壓模組的第三端子，第二端子連接到所述環路控制模組的第三端子。 The fast charging protocol chip provided according to the first embodiment of the present invention further includes a voltage divider module and an output voltage feedback module, wherein: the first terminal of the voltage divider module is connected to the chip power supply pin, and the first terminal of the voltage divider module is connected to the power supply pin of the chip. The two terminals are connected to the reference ground; and the first terminal of the output voltage feedback module is connected to the third terminal of the voltage dividing module, and the second terminal is connected to the third terminal of the loop control module.
根據本創作的第一實施例提供的快充協議晶片，還包括電壓基準模組，其中：所述電壓基準模組連接到所述晶片供電引腳。 The fast charging protocol chip provided according to the first embodiment of the present invention further includes a voltage reference module, wherein: the voltage reference module is connected to the power supply pin of the chip.
根據本創作的第一實施例提供的快充協議晶片，還包括資料通信引腳、通道配置引腳、快充協議譯碼和解碼控制模組，以及閘極驅動器，其中：所述快充協議譯碼和解碼控制模組的第一和第二端子連接到所述資料通信引腳和所述通道配置引腳；以及所述閘極驅動器的第一端子連接到所述快充協議譯碼和解碼控制模組的第三端子，第二端子連接到所述開關電晶體的第一端子；並且其中，所述開關電晶體的第二和第三端子用作所述輸出模組的第一和第二端子。 The fast charging protocol chip provided according to the first embodiment of the present invention further includes data communication pins, channel configuration pins, a fast charging protocol decoding and decoding control module, and a gate driver, wherein: the fast charging protocol The first and second terminals of the decoding and decoding control module are connected to the data communication pins and the channel configuration pins; and the first terminal of the gate driver is connected to the fast charging protocol decoding and a third terminal of the decoding control module, the second terminal is connected to the first terminal of the switching transistor; and wherein the second and third terminals of the switching transistor serve as the first and third terminals of the output module second terminal.
根據本創作的第一實施例提供的快充協議晶片，還包括第一數位類比轉換器，其中：所述第一數位類比轉換器的第一端子連接到所述快充協議譯碼和解碼控制模組的第四端子，第二端子連接到所述輸出電流回饋模組的第三端子。 The fast charging protocol chip provided according to the first embodiment of the present invention further includes a first digital-to-analog converter, wherein: a first terminal of the first digital-to-analog converter is connected to the fast charging protocol decoding and decoding control The fourth terminal of the module and the second terminal are connected to the third terminal of the output current feedback module.
根據本創作的第一實施例提供的快充協議晶片，還包括第二數位類比轉換器，其中：所述第二數位類比轉換器的第一端子連接到所述快充協議譯碼和解碼控制模組的第五端子，第二端子連接到所述輸出電壓回饋模組的第三端子。 The fast charging protocol chip provided according to the first embodiment of the present invention further includes a second digital-to-analog converter, wherein: the first terminal of the second digital-to-analog converter is connected to the fast charging protocol decoding and decoding control The fifth terminal of the module, the second terminal is connected to the third terminal of the output voltage feedback module.
根據本創作的第一實施例提供的快充協議晶片，還包括保護控制模組，其中：所述保護控制模組連接到所述快充協議譯碼和解碼控制模組的第六端子。 The fast charging protocol chip provided according to the first embodiment of the present invention further includes a protection control module, wherein: the protection control module is connected to the sixth terminal of the fast charging protocol decoding and decoding control module.
根據本創作的第一實施例提供的快充協議晶片，所述輸出模組還 包括電流檢測單元，其中：所述電流檢測單元的第一端子連接到所述開關電晶體的第一端子，第二端子連接到所述開關電晶體的第二端子，第三和第四端子用作所述輸出模組的第三和第四端子。 According to the fast charging protocol chip provided in the first embodiment of the present invention, the output module is further A current detection unit is included, wherein: a first terminal of the current detection unit is connected to the first terminal of the switching transistor, a second terminal is connected to the second terminal of the switching transistor, and the third and fourth terminals are used for as the third and fourth terminals of the output module.
根據本創作的第一實施例提供的快充協議晶片，所述電流檢測單元為SenseFET。 According to the fast charging protocol chip provided by the first embodiment of the present invention, the current detection unit is a SenseFET.
本創作的第二實施例提供了一種開關電源系統，包括如第一實施例所述的快充協議晶片。 The second embodiment of the present invention provides a switching power supply system, including the fast charging protocol chip described in the first embodiment.
根據本創作實施例提供的開關電源系統及其快充協議晶片，通過將輸出模組、電流放大模組以及環路控制模組集成在快充協議晶片內部，可以減少快充協議晶片的引腳數量和週邊器件數量，從而可以提高系統集成度，節約系統元器件，有利於實現系統的小型化。 According to the switching power supply system and the fast charging protocol chip provided in the present creative embodiment, by integrating the output module, the current amplification module and the loop control module inside the fast charging protocol chip, the pins of the fast charging protocol chip can be reduced. The number and the number of peripheral devices can improve the system integration, save system components, and help realize the miniaturization of the system.
100,200,300:開關電源系統 100,200,300: Switching Power Supply System
400:快充協議晶片 400: Fast Charge Protocol Chip
402:輸出模組 402: output module
404:電流放大模組 404: Current amplification module
406:輸出電流回饋模組 406: Output current feedback module
408:環流控制模組 408: Circulation control module
410:分壓模組 410: Voltage divider module
412:輸出電壓回饋模組 412: Output voltage feedback module
414:電壓基準模組 414: Voltage reference module
416:快充協議譯碼和解碼控制模組 416: Fast charging protocol decoding and decoding control module
418:閘極驅動器 418: Gate driver
420,422:數位類比轉換器 420, 422: Digital to Analog Converters
424:保護控制模組 424: Protection control module
CC1,CC2:信號 CC1, CC2: Signal
DAC1,DAC2:數位類比轉換器 DAC1, DAC2: Digital to Analog Converters
DN:信號 DN: signal
DP:信號 DP: Signal
GND:引腳 GND: pin
ISP:電流檢測正端 ISP: Current detection positive terminal
ISN:電流檢測負端 ISN: Current detection negative terminal
M1:電晶體 M1: Transistor
M2:輸出電晶體 M2: output transistor
OPTO:引腳 OPTO: pin
R1,R2:電阻 R1, R2: Resistors
SenseFET:電流檢測單元 SenseFET: Current Sensing Unit
sense:檢測電阻 sense: sense resistance
senseFET:功率開關 senseFET: power switch
USB/TYPE C CC2:引腳 USB/TYPE C CC2: pin
USB/TYPE C CC1:引腳 USB/TYPE C CC1: pin
USB/TYPE C DN:引腳 USB/TYPE C DN: pin
USB/TYPE C DP:引腳 USB/TYPE C DP: pin
VBUS:信號 VBUS: Signal
Vbus:、引腳 Vbus:, pin
Vin:引腳 Vin: pin
Vin_div:分壓電壓 Vin_div: divider voltage
從下面結合圖式對本創作的具體實施方式的描述中可以更好地理解本創作，其中：圖1示出了現有技術中的包括常規快充協議晶片的開關電源系統100的電路示意圖；圖2A示出了本創作的第一實施例提供的開關電源系統200的電路示意圖；圖2B示出了本創作的第二實施例提供的開關電源系統300的電路示意圖；圖3示出了本創作的實施例提供的快充協議晶片的引腳示意圖；以及圖4示出了本創作實施例提供的快充協議晶片400的電路示意圖。
The present invention can be better understood from the following description of the specific embodiments of the present invention in conjunction with the drawings, wherein: FIG. 1 shows a schematic circuit diagram of a switching
下面將詳細描述本創作的各個方面的特徵和示例性實施例。在下面的詳細描述中，提出了許多具體細節，以便提供對本創作的全面理解。但是，對於本領域技術人員來說很明顯的是，本創作可以在不需要這些具體細節中的一些細節的情況下實施。下面對實施例的描述僅僅是為了通過示出本創作的示例來提供對本創作的更好的理解。本創作決不限於下面所提出的任何具體配置，而是在不脫離本創作的精神的前提下覆蓋了元素和部件的任何修改、替換和改進。在圖式和下面的描述中，沒有示出公知的結構和技術，以便避免對本創作 造成不必要的模糊。另外，需要說明的是，這裡使用的用語“A與B連接”可以表示“A與B直接連接”也可以表示“A與B經由一個或多個其他元件間接連接”。 Features and exemplary embodiments of various aspects of the present invention are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present creation by illustrating an example of the present creation. This creation is by no means limited to any specific configuration set forth below, but covers any modification, substitution and improvement of elements and components without departing from the spirit of this creation. In the drawings and the following description, well-known structures and techniques are not shown in order to avoid obscure the present invention cause unnecessary blur. In addition, it should be noted that the term "A and B are connected" used herein may mean "A and B are directly connected" or "A and B are indirectly connected via one or more other elements".
隨著諸如智慧手機、平板電腦、筆記型電腦之類的移動設備的功能越來越多，為其進行供電的電池容量也呈指數式增加。然而，局限於USB最大電流物理限制，這些移動設備採用與充電器智慧協商更高的電壓，例如，從傳統的5V供電，切換到諸如9V、12V甚至20V或其他特定電壓值以用於供電，在這種情況下，出現了使用PD快充協議進行快充的應用。 As mobile devices such as smartphones, tablets, and laptops become more versatile, the capacity of the batteries that power them increases exponentially. However, limited by the physical limitation of USB maximum current, these mobile devices use a higher voltage negotiated intelligently with the charger, for example, from the traditional 5V power supply, switching to such as 9V, 12V or even 20V or other specific voltage values for power supply, In this case, the application of fast charging using the PD fast charging protocol has appeared.
可以理解的是，(Power Delivery)PD快充協議是(USB Implementers Forum，USB-IF)USB開發者論壇組織公佈的功率傳輸協議，它的公佈使得充電器默認的5V/2A的輸出能力提高到諸如100W，這可以實現更高的電壓和電流，並且可以自由地改變電力的輸送方向。然而，由於輸出電壓不再是傳統的5V輸出，因此，為了保證***待充電設備的安全可靠，本創作提供的實施例通過在輸出Vbus上增加輸出開關，並該輸出開關可以在輸出線和待充電設備滿足協議要求的情況下而被使能，從而可以為待充電設備提供合適的電壓和電流。 It is understandable that the (Power Delivery) PD fast charging protocol is a power transmission protocol announced by the (USB Implementers Forum, USB-IF) USB Developer Forum. Its publication increases the default 5V/2A output capability of the charger to Such as 100W, this enables higher voltages and currents, and can freely change the direction of power delivery. However, since the output voltage is no longer the traditional 5V output, in order to ensure the safety and reliability of plugging into the device to be charged, the embodiment provided by this creation adds an output switch on the output Vbus, and the output switch can be connected between the output line and the waiting device. The charging device is enabled when it meets the protocol requirements, so that the device to be charged can be provided with appropriate voltage and current.
當前，在輸出功率處於100W以內的場景下，減少系統元器件的數量以實現協議晶片的高度集成，這成為現有技術中需要解決的關鍵技術問題之一，本創作提供的實施例通過在快充協議晶片中內置諸如輸出模組、電流放大電路、環路控制模組中的一者或多者，從而可以實現PD快充電源的小型化、低成本、高效率。 At present, in the scenario where the output power is within 100W, reducing the number of system components to achieve high integration of the protocol chip has become one of the key technical problems to be solved in the prior art. One or more of an output module, a current amplifier circuit, and a loop control module are built into the protocol chip, so that miniaturization, low cost, and high efficiency of the PD fast charging source can be realized.
為了更好地理解本創作提供的開關電源系統及其快充協議晶片，以下首先對現有技術中的開關電源系統進行介紹，其中以反激式開關電源系統為例進行介紹。 In order to better understand the switching power supply system and its fast charging protocol chip provided by this creation, the following first introduces the switching power supply system in the prior art, in which the flyback switching power supply system is taken as an example for introduction.
具體地，參見圖1，圖1示出了現有技術中的包括常規快充協議晶片的開關電源系統100的電路示意圖。
Specifically, referring to FIG. 1 , FIG. 1 shows a schematic circuit diagram of a switching
如圖1所示，開關電源系統100主要包括電磁干擾(Electromagnetic Interference，EMI)濾波器，脈寬調變(Pulse Width Modulation，PWM)模組、快充協議晶片以及同步整流(synchronous rectifier，
SR)模組等。
As shown in FIG. 1, the switching
其中，快充協議晶片的引腳數量較多，且輸出電晶體M2和檢測電阻(標記為sense)位於晶片外部，導致晶片的集成度較低，成本較高且尺寸較大。 Among them, the fast charging protocol chip has a large number of pins, and the output transistor M2 and the detection resistor (marked as sense) are located outside the chip, resulting in low integration, high cost and large size of the chip.
為了解決現有技術中存在的上述問題中的一者或多者，本創作實施例提供了一種高度集成的快充協議晶片以及包括這種晶片的開關電源系統。 In order to solve one or more of the above problems existing in the prior art, the present inventive embodiment provides a highly integrated fast charging protocol chip and a switching power supply system including the chip.
具體地，參考圖2A和圖2B，圖2A示出了本創作的第一實施例提供的開關電源系統200的電路示意圖，以及圖2B示出了本創作的第二實施例提供的開關電源系統300的電路示意圖，其中以反激式開關電源系統為例進行介紹，可以理解的是，這些圖示僅出於說明的目的，而不應當解釋為限制性的。
Specifically, referring to FIG. 2A and FIG. 2B , FIG. 2A shows a schematic circuit diagram of the switching
其中，圖2A和圖2B的不同之處在於晶片的光耦驅動引腳OPTO(這將在下面描述)的驅動方式不同，圖2A的驅動方式為上驅動，而圖2B的驅動方式為下驅動。 The difference between FIG. 2A and FIG. 2B is that the driving mode of the optocoupler driving pin OPTO of the chip (which will be described below) is different. The driving mode in FIG. 2A is up driving, while the driving mode in FIG. 2B is down driving .
以下結合圖3對圖2A和圖2B提供的快充協議晶片的各個引腳進行介紹，具體地，圖3示出了本創作的實施例提供的快充協議晶片的引腳示意圖，其封裝形式可以採用SOP8或者ESOP8。 The pins of the fast charging protocol chip provided in FIGS. 2A and 2B are introduced below with reference to FIG. 3 . Specifically, FIG. 3 shows a schematic diagram of the pins of the fast charging protocol chip provided by the embodiment of the present invention, and its package form SOP8 or ESOP8 can be used.
如圖3所示，本創作的實施例提供的快充協議晶片的引腳數量可以為8個，例如，快充協議晶片可以包括諸如以下引腳：輸出Vbus引腳、晶片供電Vin引腳、光耦驅動OPTO引腳、晶片接地GND引腳、USB/TYPE C CC2引腳、USB/TYPE C CC1引腳、USB/TYPE C DN引腳以及USB/TYPE C DP引腳等。 As shown in FIG. 3 , the number of pins of the fast charging protocol chip provided by the embodiment of the present invention may be 8. For example, the fast charging protocol chip may include the following pins: output Vbus pin, chip power supply Vin pin, Optocoupler drives OPTO pin, chip ground GND pin, USB/TYPE C CC2 pin, USB/TYPE C CC1 pin, USB/TYPE C DN pin and USB/TYPE C DP pin, etc.
再次參考圖2A和圖2B，晶片的上述引腳在開關電源系統內的連接關係如下：晶片的Vbus引腳可以連接至通用序列匯流排C型(USB/TYPE-C)介面的VBUS端，可以用於接收VBUS信號；晶片的Vin引腳可以連接至輸出電容的正端，可以用於除了為晶片進行供電之外，還可以對輸出電壓進行檢測，以實現對系統的不同的輸出電壓的控制；晶片的OPTO引腳，可以連接至開關電源系統的光耦，可以用於通過控制流經光耦的電流，以實現系統環路控制；晶片的GND引腳可以連接至輸出電容的負端，還可以連接至USB/TYPE-C介面的GND端；晶片的USB/TYPE C CC2引腳可以連接至 USB/TYPE-C介面的CC2端，可以用於接收CC2信號；晶片的USB/TYPE C CC1引腳可以連接至USB/TYPE-C介面的CC1端，可以用於接收CC1信號；晶片的USB/TYPE C DN引腳可以連接至USB/TYPE-C介面的DN端，可以用於接收DN信號；以及晶片的USB/TYPE C DP引腳可以連接至USB/TYPE-C介面的DP端，可以用於接收DP信號。 Referring to FIG. 2A and FIG. 2B again, the connection relationship of the above-mentioned pins of the chip in the switching power supply system is as follows: the Vbus pin of the chip can be connected to the VBUS end of the universal serial bus type C (USB/TYPE-C) interface, and can Used to receive VBUS signal; the Vin pin of the chip can be connected to the positive terminal of the output capacitor, which can be used to detect the output voltage in addition to supplying power to the chip, so as to realize the control of different output voltages of the system ;The OPTO pin of the chip can be connected to the optocoupler of the switching power supply system, and can be used to control the current flowing through the optocoupler to achieve system loop control; the GND pin of the chip can be connected to the negative end of the output capacitor, It can also be connected to the GND terminal of the USB/TYPE-C interface; the USB/TYPE C CC2 pin of the chip can be connected to The CC2 terminal of the USB/TYPE-C interface can be used to receive the CC2 signal; the USB/TYPE C CC1 pin of the chip can be connected to the CC1 terminal of the USB/TYPE-C interface and can be used to receive the CC1 signal; the USB/TYPE C CC1 pin of the chip can be used to receive the CC1 signal; The TYPE C DN pin can be connected to the DN terminal of the USB/TYPE-C interface, which can be used to receive DN signals; and the USB/TYPE C DP pin of the chip can be connected to the DP terminal of the USB/TYPE-C interface, which can be used to use for receiving DP signals.
綜上，本創作實施例提供的快充協議晶片可以集成有電流檢測引腳、輸出開關以及驅動引腳、電壓/電流環路補償引腳等，因此，與圖1的傳統開關電源系統相比，圖2A和圖2B提供的開關電源系統的元器件數量較少，且成本較低。 To sum up, the fast charging protocol chip provided in this creative embodiment can integrate current detection pins, output switches, drive pins, voltage/current loop compensation pins, etc. Therefore, compared with the traditional switching power supply system of FIG. 1 , , the switching power supply system provided by FIG. 2A and FIG. 2B has fewer components and lower cost.
以下通過具體示例的方式對本創作實施例提供的快充協議晶片進行介紹，具體地，參見圖4，圖4示出了本創作實施例提供的快充協議晶片400的電路示意圖。
The fast charging protocol chip provided by this creative embodiment is introduced below by way of specific examples. Specifically, referring to FIG. 4 , FIG. 4 shows a schematic circuit diagram of the fast
作為一個示例，如圖4所示，該快充協議晶片400可以包括Vbus引腳、Vin引腳、OPTO引腳以及輸出模組402、電流放大模組404、輸出電流回饋(CC EA)模組406以及環路控制模組408等。
As an example, as shown in FIG. 4 , the fast
具體地，該輸出模組402的第一端子可以連接到Vin引腳，第二端子可以連接到Vbus引腳，第三和第四端子可以連接到電流放大模組404的第一和第二端子，電流放大模組404的第三端子可以連接到輸出電流回饋模組406的第一端子，輸出電流回饋模組406的第二端子可以連接到環路控制模組408的第一端子，環路控制模組408的第二端子可以連接到OPTO引腳。
Specifically, the first terminal of the output module 402 can be connected to the Vin pin, the second terminal can be connected to the Vbus pin, and the third and fourth terminals can be connected to the first and second terminals of the
作為一個示例，該輸出模組402可以包括開關電晶體M1和電流檢測單元(例如，功率開關senseFET)，其中senseFET可以包括輸出電晶體M2和電阻R1，該電阻R1可以用於對輸出電流進行檢測，其中，電流檢測單元的第一端子(例如，M2的閘極)可以連接到開關電晶體M1的第一端子(例如，M1的閘極)，第二端子可以連接到開關電晶體的第二端子(即，連接到Vin引腳)，第三和第四端子可以用作輸出模組402的第三和第四端子(即，可以分別連接到電流放大模組404的第一和第二端子)。
As an example, the output module 402 may include a switching transistor M1 and a current detection unit (eg, a power switch senseFET), wherein the senseFET may include an output transistor M2 and a resistor R1, and the resistor R1 may be used to detect the output current , wherein the first terminal of the current detection unit (eg, the gate of M2 ) may be connected to the first terminal of the switching transistor M1 (eg, the gate of M1 ), and the second terminal may be connected to the second terminal of the switching transistor M1 terminal (ie, connected to the Vin pin), the third and fourth terminals may be used as the third and fourth terminals of the output module 402 (ie, may be connected to the first and second terminals of the
具體地，當在後端接入滿足USB/TYPE-C協議的待充電設備時，快充協議晶片可以控制開關電晶體M1導通，以為待充電設備提供合適的電壓， 同時可以利用功率開關senseFET來實現對輸出電流的檢測，以為待充電設備提供合適的電流。 Specifically, when a device to be charged that satisfies the USB/TYPE-C protocol is connected to the back end, the fast charging protocol chip can control the switching transistor M1 to turn on, so as to provide a suitable voltage for the device to be charged. At the same time, the power switch senseFET can be used to detect the output current, so as to provide a suitable current for the device to be charged.
作為一個示例，電流放大模組404可以用於對輸出電流進行放大。
As an example, the
作為一個示例，輸出電流回饋模組406可以為輸出電流回饋運算放大器，其可以用於實現不同的輸出電流。
As an example, the output
作為一個示例，環路控制模組408可以用於對輸出電流回饋環路進行補償，以保證在各種條件下的穩定性。
As an example, the
作為一個示例，該快充協議晶片400還可以包括分壓模組410和輸出電壓回饋(CV EA)模組412等。
As an example, the fast
具體地，分壓模組410的第一端子可以連接到Vin引腳，第二端子可以連接至參考地；以及輸出電壓回饋模組412的第一端子可以連接到分壓模組410的第三端子，第二端子可以連接到環路控制模組408的第三端子。
Specifically, the first terminal of the
此外，該分壓模組410可以用於利用兩個分壓電阻(例如，R1和R2)來對輸入電壓Vin進行分壓之後，將分壓電壓Vin_div輸入到例如輸出電壓回饋模組412，使得輸出電壓回饋模組412可以基於來自快充協議譯碼和解碼控制模組416(這將在下面介紹)的電壓基準和分壓電壓Vin_div來實現不同的輸出電壓。
In addition, the
作為一個示例，上述環流控制模組408除了對輸出電流回饋環路進行補償之外，還可以用於對輸出電壓回饋環路進行補償，以保證在各種條件下的穩定性。
As an example, in addition to compensating the output current feedback loop, the above-mentioned circulating
作為一個示例，分壓模組410可以包括串聯連接在Vin引腳和參考地之間的電阻R1和電阻R2，其中，電阻R1和電阻R2的公共端可以用作分壓模組410的第三端子，即可以輸出分壓電壓Vin_div至輸出電壓回饋模組412。
As an example, the
作為一個示例，輸出電壓回饋模組412可以為輸出電壓回饋運算放大器，其可以實現不同的輸出電壓。
As an example, the output
作為一個示例，該快充協議晶片400還可以包括電壓基準模組414，具體地，該電壓基準模組414可以連接到Vin引腳，可以用於為晶片中的一個或多個元件進行供電，該電壓基準模組414可以為欠壓鎖定(Under Voltage Lock Out，UVLO)模組和低壓差線性穩壓器(Low Dropout Regulator，
LDO)，其可以用於檢測輸出電壓，並為內部控制提供輸出電壓資訊等。
As an example, the fast
作為一個示例，該快充協議晶片400還可以包括資料通信引腳(例如，DP引腳和DN引腳)、通道配置引腳(例如，CC1引腳和CC2引腳)、快充協議譯碼和解碼控制模組416，以及閘極驅動器418等。
As an example, the fast
具體地，快充協議譯碼和解碼控制模組416的第一和第二端子可以連接到資料通信引腳和通道配置引腳，閘極驅動器418的第一端子可以連接到快充協議譯碼和解碼控制模組416的第三端子，閘極驅動器418的第二端子可以連接到開關電晶體M1的第一端子(例如，閘極端子)，並且其中，開關電晶體M1的第二和第三端子可以分別用作輸出模組402的第一和第二端子(即，可以分別連接到Vin引腳和Vbus引腳)。
Specifically, the first and second terminals of the fast charging protocol decoding and
作為一個示例，快充協議譯碼和解碼控制模組416可以用於實現開關電源系統與待充電設備之間的通信，以及基於來自該待充電設備的命令來實現不同的電壓輸出、電流輸出以及保護控制等功能。
As an example, the fast charging protocol decoding and
作為一個示例，閘極驅動器418基於來自快充協議譯碼和解碼控制模組416的信號來控制M1和M2的導通，可以理解的是，M1和M2為共閘極結構，二者同時導通和關斷，具體地，閘極驅動器418的輸出端可以連接到M1和M2的閘極，以基於來自快充協議譯碼和解碼控制模組416的信號而被導通和關斷。
As an example, the
作為一個示例，該快充協議晶片400還可以包括數位類比轉換器420(例如，DAC1)，具體地，該數位類比轉換器420的第一端子可以連接到快充協議譯碼和解碼控制模組416的第四端子，第二端子可以連接到輸出電流回饋模組406的第三端子。
As an example, the fast
作為一個示例，該數位類比轉換器420可以用於基於來自快充協議譯碼和解碼控制模組416的信號來生成電流基準，以用於實現不同的電流控制，具體地，將該電流基準輸入至輸出電流回饋模組406，使得輸出電流回饋模組406可以基於該電流基準和來自電流放大模組404的經放大的電流來實現不同的輸出電流。
As an example, the digital-to-
作為一個示例，該快充協議晶片400還可以包括數位類比轉換器422(例如，DAC2)，具體地，數位類比轉換器422的第一端子可以連接到快
充協議譯碼和解碼控制模組416的第五端子，第二端子可以連接到輸出電壓回饋模組412的第三端子。
As an example, the fast
作為一個示例，該數位類比轉換器422可以用於基於來自快充協議譯碼和解碼控制模組416的信號來生成電壓基準，以用於實現不同的電壓控制，具體地，將該電壓基準輸入至輸出電壓回饋模組412，使得該輸出電壓回饋模組412可以基於該電壓基準和來自分壓模組410的分壓信號來實現不同的輸出電壓。
As an example, the digital-to-
作為一個示例，該快充協議晶片400可以包括保護控制模組424，具體地，該保護控制模組424可以連接到快充協議譯碼和解碼控制模組416的第六端子。
As an example, the fast
作為一個示例，該保護控制模組424可以用於保護晶片在發生異常故障時，實現保護功能，防止晶片被損壞等。
As an example, the
綜上，本創作實施例提供的快充協議晶片可以通過在晶片內部集成輸出模組(例如，輸出開關)、電流放大模組以及環路控制模組(例如，電流環路補償、電壓環路補償)等，可以最大限度地減少快充協議晶片的引腳數量和週邊器件數量，使得晶片可以採用SOP8封裝形式，從而可以提高系統集成度，節約系統元器件，降低成本，有利於實現系統的小型化，其能夠實現PD協議充電系統的低成本、小型化方案，符合最新的PD3.0/3.1協議標準，並且支援DPDN介面的高壓快速充電協議。 To sum up, the fast charging protocol chip provided in this creative embodiment can integrate an output module (for example, an output switch), a current amplification module, and a loop control module (for example, a current loop compensation, a voltage loop, etc.) inside the chip. Compensation), etc., can minimize the number of pins and peripheral devices of the fast charging protocol chip, so that the chip can be packaged in SOP8, which can improve system integration, save system components, reduce costs, and is conducive to the realization of system integration. Miniaturization, it can realize the low-cost and miniaturized solution of PD protocol charging system, conform to the latest PD3.0/3.1 protocol standard, and support the high-voltage fast charging protocol of DPDN interface.
本創作可以以其他的具體形式實現，而不脫離其精神和本質特徵。當前的實施例在所有方面都被看作是示例性的而非限定性的，本創作的範圍由所附請求項而非上述描述定義，並且落入請求項的含義和等同物的範圍內的全部改變都被包括在本創作的範圍中。 This creation can be realized in other specific forms without departing from its spirit and essential characteristics. The present embodiments are to be considered in all respects as illustrative and not restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and within the meaning and range of equivalents of the claims. All changes are included in the scope of this creation.
400:快充協議晶片 400: Fast Charge Protocol Chip
402:輸出模組 402: output module
404:電流放大模組 404: Current amplification module
406:輸出電流回饋模組 406: Output current feedback module
408:環路控制模組 408: Loop Control Module
410:分壓模組 410: Voltage divider module
412:輸出電壓回饋模組 412: Output voltage feedback module
414:電壓基準模組 414: Voltage reference module
416:快充協議譯碼和解碼控制模組 416: Fast charging protocol decoding and decoding control module
418:閘極驅動器 418: Gate driver
420,422:數位類比轉換器 420, 422: Digital to Analog Converters
424:保護控制模組 424: Protection control module
CC1,CC2:信號 CC1, CC2: Signal
DAC1,DAC2:數位類比轉換器 DAC1, DAC2: Digital to Analog Converters
DN:信號 DN: signal
DP:信號 DP: Signal
ISP:電流檢測正端 ISP: Current detection positive terminal
ISN:電流檢測負端 ISN: Current detection negative terminal
M1:電晶體 M1: Transistor
M2:輸出電晶體 M2: output transistor
OPTO:引腳 OPTO: pin
R1,R2:電阻 R1, R2: Resistors
Vbus:引腳 Vbus: pin
Vin_div:分壓電壓 Vin_div: divider voltage
Claims (10)
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| TWI835617B (en) * | 2023-01-05 | 2024-03-11 | 大陸商昂寶電子（上海）有限公司 | Fast charging control chip for USB fast charging charger |
| TWI835616B (en) * | 2023-01-05 | 2024-03-11 | 大陸商昂寶電子（上海）有限公司 | Fast charging control chip for USB fast charging charger |
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| CN115856573B (en) * | 2022-11-30 | 2023-10-03 | 珠海英集芯半导体有限公司 | PD protocol test system and method for chip mass production test |
| CN117371382B (en) * | 2023-10-24 | 2024-05-28 | 深圳市合芯数字科技有限公司 | Standard cell layout processing method, device and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI835617B (en) * | 2023-01-05 | 2024-03-11 | 大陸商昂寶電子（上海）有限公司 | Fast charging control chip for USB fast charging charger |
| TWI835616B (en) * | 2023-01-05 | 2024-03-11 | 大陸商昂寶電子（上海）有限公司 | Fast charging control chip for USB fast charging charger |
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