TWM623543U - Switching power supply system and power transmission agreement chip thereof - Google Patents

Switching power supply system and power transmission agreement chip thereof Download PDF

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TWM623543U
TWM623543U TW110209486U TW110209486U TWM623543U TW M623543 U TWM623543 U TW M623543U TW 110209486 U TW110209486 U TW 110209486U TW 110209486 U TW110209486 U TW 110209486U TW M623543 U TWM623543 U TW M623543U
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Taiwan
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pin
power supply
supply system
switching power
voltage
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TW110209486U
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張秀紅
姚超
張允超
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大陸商昂寶電子（上海）有限公司
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

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Abstract

提供了一種開關電源系統及其功率傳輸協議晶片。該功率傳輸協議晶片包括：輸出電壓匯流排引腳，用於從開關電源系統的輸出電壓匯流排接收開關電源系統的輸出電壓；輸出電壓匯出引腳，用於將開關電源系統的輸出電壓提供給被充電設備；以及輸出開關，其中：輸出開關的汲極連接到輸出電壓匯流排引腳，輸出開關的源極連接到輸出電壓匯出引腳，當輸出開關處於導通狀態時，開關電源系統的輸出電壓經由輸出電壓匯流排引腳、輸出開關、以及輸出電壓匯出引腳被提供給被充電設備。根據本創作實施例的用於開關電源系統的功率傳輸協議晶片，可以實現開關電源系統(例如，PD快充電源)的小型化、低成本、高效率。 A switching power supply system and its power transmission protocol chip are provided. The power transmission protocol chip includes: an output voltage bus bar pin for receiving the output voltage of the switching power supply system from the output voltage bus bar of the switching power supply system; an output voltage sink pin for supplying the output voltage of the switching power supply system to the device to be charged; and an output switch, wherein: the drain of the output switch is connected to the output voltage bus bar pin, the source of the output switch is connected to the output voltage sink pin, when the output switch is in a conducting state, the switching power supply system The output voltage of the is supplied to the charged device via the output voltage bus pin, the output switch, and the output voltage bus pin. According to the power transfer protocol chip for a switching power supply system according to the inventive embodiment, miniaturization, low cost, and high efficiency of the switching power supply system (eg, PD fast charging source) can be realized.

Description

開關電源系統及其功率傳輸協議晶片 Switching power supply system and its power transmission protocol chip

本創作涉及電路領域，尤其涉及一種開關電源系統及其功率傳輸協議晶片。 This creation relates to the field of circuits, in particular to a switching power supply system and its power transmission protocol chip.

隨著手機、平板電腦、筆記型電腦等移動設備的功能越來越多，其電池容量爆發式增長。但是，由於通用序列匯流排(USB)的最大電流的限制，這些移動設備需要與充電器(即，開關電源系統)智慧協商更高的電壓，從傳統的5V供電切換到9V、12V、甚至20V或其他特定電壓供電，以實現其電池的快速充電。 As mobile devices such as mobile phones, tablets, and laptops have more and more functions, their battery capacity has exploded. However, due to the limitation of the maximum current of the Universal Serial Bus (USB), these mobile devices need to intelligently negotiate a higher voltage with the charger (ie, switching power supply system), switching from the traditional 5V supply to 9V, 12V, or even 20V or other specific voltage to achieve fast charging of its battery.

功率傳輸(Power Delivery,PD)協議是USB開發者論壇(USB-IF)組織公佈的功率傳輸協定，它的公佈使充電器的電力輸出能力從默認的10W提高到了100W。當充電器採用PD協定對被充電設備進行充電時，由於充電器的輸出電壓不是傳統的5V輸出，為了保證被充電設備的安全可靠，需要在充電器的輸出電壓匯流排上增加輸出開關，只有充電器和被充電設備二者都滿足PD協定的要求時才使輸出開關導通，充電器才能為被充電設備充電。 The Power Delivery (PD) protocol is a power delivery protocol announced by the USB Developer Forum (USB-IF), which increases the power output capability of the charger from the default 10W to 100W. When the charger uses the PD protocol to charge the charged device, since the output voltage of the charger is not the traditional 5V output, in order to ensure the safety and reliability of the charged device, it is necessary to add an output switch on the output voltage bus of the charger. Only When both the charger and the charged device meet the requirements of the PD protocol, the output switch is turned on, and the charger can charge the charged device.

根據本創作實施例的用於開關電源系統的功率傳輸協議晶片，包括：輸出電壓匯流排引腳，用於從開關電源系統的輸出電壓匯流排接收開關電源系統的輸出電壓；輸出電壓匯出引腳，用於將開關電源系統的輸出電壓提供給被充電設備；以及輸出開關，其中：輸出開關的汲極連接到輸出電壓匯流排引腳，輸出開關的源極連接到輸出電壓匯出引腳，當輸出開關處於導通狀態時，開關電源系統的輸出電壓經由輸出電壓匯流 排引腳、輸出開關、以及輸出電壓匯出引腳被提供給被充電設備。 A power transmission protocol chip for a switching power supply system according to an embodiment of the present invention includes: an output voltage bus bar pin for receiving the output voltage of the switching power supply system from the output voltage bus bar of the switching power supply system; pin, used to provide the output voltage of the switching power supply system to the charged device; and an output switch, wherein: the drain of the output switch is connected to the output voltage bus bar pin, and the source of the output switch is connected to the output voltage sink pin , when the output switch is in the conducting state, the output voltage of the switching power supply system is converged through the output voltage The row pins, output switches, and output voltage sink pins are provided to the charged device.

根據本創作實施例的用於開關電源系統的功率傳輸協議晶片，集成了原本連接到開關電源系統的輸出電壓匯流排、用於控制是否向被充電設備提供輸出電壓的輸出開關，可以實現開關電源系統(例如，PD快充電源)的小型化、低成本、高效率。 According to the power transmission protocol chip for the switching power supply system according to the embodiment of the present invention, the output voltage bus bar originally connected to the switching power supply system and the output switch for controlling whether to provide the output voltage to the charged device are integrated, and the switching power supply can be realized Miniaturization, low cost, high efficiency of systems (eg PD fast charging sources).

100:返馳變換器電源 100: Flyback converter power supply

200:返馳變換器電源 200: Flyback converter power supply

102、202:PD協議晶片 102, 202: PD protocol chip

CC1:USB PD TYPE-C CC1引腳 CC1: USB PD TYPE-C CC1 pin

CC2:USB PD TYPE-C CC2引腳 CC2: USB PD TYPE-C CC2 pin

DN:USB PD TYPE-C數據負引腳 DN: USB PD TYPE-C data negative pin

DP:USB PD TYPE-C資料正引腳 DP: USB PD TYPE-C data positive pin

GND:晶片接地引腳 GND: Chip ground pin

GPIO:通用輸入輸出擴展引腳 GPIO: general-purpose input and output expansion pins

IFB:電流環路補償引腳 IFB: Current Loop Compensation Pin

ISN:電流檢測負引腳 ISN: Current Sense Negative Pin

ISP:電流檢測正引腳 ISP: Current Sense Positive Pin

MCU:微控制單元模組 MCU: Micro Control Unit Module

OPTO:光耦驅動引腳 OPTO: Optocoupler drive pin

RT:過溫保護引腳 RT: Over temperature protection pin

TYPE-C:USB PD類型C TYPE-C: USB PD Type-C

UVLO/LDO:欠壓鎖定/低壓差線性穩壓器模組 UVLO/LDO: Under Voltage Lockout/Low Dropout Linear Regulator Module

Vbus:輸出電壓匯流排引腳 Vbus: output voltage bus pin

Vbus_c:輸出電壓匯出引腳 Vbus_c: output voltage sink pin

VDD:晶片供電引腳 VDD: chip power supply pin

VFB:電壓環路補償引腳 VFB: Voltage loop compensation pin

VIN:電壓輸入引腳 VIN: Voltage input pin

從下面結合附圖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： The present creation can be better understood from the following description of the specific embodiments of the present creation in conjunction with the accompanying drawings, wherein:

圖1示出了採用常規的PD協議晶片的返馳變換器電源的電路圖。 FIG. 1 shows a circuit diagram of a flyback converter power supply using a conventional PD protocol wafer.

圖2示出了根據本創作實施例的PD協議晶片的框圖。 FIG. 2 shows a block diagram of a PD protocol wafer according to an embodiment of the present invention.

圖3示出了採用根據本創作實施例的PD協議晶片的返馳變換器電源的電路圖。 FIG. 3 shows a circuit diagram of a flyback converter power supply employing a PD protocol chip according to an embodiment of the present invention.

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。在附圖和下面的描述中，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 have not been shown in order to avoid unnecessarily obscuring the present invention. 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".

圖1示出了採用常規的PD協議晶片102的返馳變換器電源100的電路圖。從圖1可以看出，由於PD協議晶片102的引腳多、週邊器件冗餘，返馳變換器電源100的系統成本高且很難實現小型化。 FIG. 1 shows a circuit diagram of a flyback converter power supply 100 employing a conventional PD protocol die 102 . As can be seen from FIG. 1 , because the PD protocol chip 102 has many pins and redundant peripheral devices, the system cost of the flyback converter power supply 100 is high and it is difficult to achieve miniaturization.

鑒於上述問題，本創作提供了一種高度集成的PD協議晶片，以使得採用該PD協議晶片的開關電源系統能夠實現小型化和高度集成化，從而降低採用該PD協議晶片的開關電源系統的成本。 In view of the above problems, this creation provides a highly integrated PD protocol chip, so that the switching power supply system using the PD protocol chip can be miniaturized and highly integrated, thereby reducing the cost of the switching power supply system using the PD protocol chip.

圖2示出了根據本創作實施例的PD協議晶片202的框圖。如圖2所示，PD協議晶片202包括輸出電壓匯流排引腳(即，引腳Vbus)、輸出電壓匯出引腳(即，引腳Vbus_c)、以及輸出開關。引腳Vbus用於從開關電源系統的輸出電壓匯流排接收開關電源系統的輸出電壓。引腳Vbus_c用於將開關電源系統的輸出電壓提供給被充電設備。輸出開關的汲極連接到引腳Vbus。輸出開關的源極連接到引腳Vbus_c。當輸出開關處於導通狀態時，開關電源系統的輸出電壓經由引腳Vbus、輸出開關、以及引腳Vbus_c被提供給被充電設備。這裡，需要說明的是，只有開關電源系統和被充電設備二者都滿足PD協定的要求時，輸出開關才可以從關斷狀態變為導通狀態，開關電源系統的輸出電壓才可以被提供給被充電設備。 FIG. 2 shows a block diagram of a PD protocol die 202 according to an embodiment of the present invention. As shown in FIG. 2 , the PD protocol chip 202 includes an output voltage bus pin (ie, pin Vbus), an output voltage bus pin (ie, pin Vbus_c), and an output switch. The pin Vbus is used to receive the output voltage of the switching power supply system from the output voltage bus of the switching power supply system. The pin Vbus_c is used to supply the output voltage of the switching power supply system to the charged device. The drain of the output switch is connected to pin Vbus. The source of the output switch is connected to pin Vbus_c. When the output switch is in the ON state, the output voltage of the switching power supply system is supplied to the charged device via the pin Vbus, the output switch, and the pin Vbus_c. Here, it should be noted that only when both the switching power supply system and the charged device meet the requirements of the PD protocol, the output switch can change from the off state to the on state, and the output voltage of the switching power supply system can be provided to the charging equipment.

根據本創作實施例的PD協議晶片202集成了原本連接到返馳變換器電源系統100的輸出電壓匯流排、用於控制是否向被充電設備提供輸出電壓的輸出開關，可以實現開關電源系統(例如，PD快充電源)的小型化、低成本、高效率。 The PD protocol chip 202 according to the present creative embodiment integrates the output voltage bus originally connected to the flyback converter power supply system 100, and the output switch for controlling whether to provide the output voltage to the charged device, and can realize a switching power supply system (eg, , PD fast charging source) miniaturization, low cost and high efficiency.

如圖2所示，在一些實施例中，PD協議晶片202還可以包括以下引腳中的一個或多個引腳： As shown in FIG. 2, in some embodiments, the PD protocol die 202 may further include one or more of the following pins:

●資料通信引腳，用於連接通用序列匯流排介面的資料通信引腳，其中，引腳Vbus_c經由該通用序列匯流排介面將開關電源系統的輸出電壓提供給被充電設備。例如，在通用序列匯流排為USB PD類型C(TYPE-C)介面時，PD協議晶片202可以包括USB PD TYPE-C資料正(DP)引腳(即，引腳DP)和USB PD TYPE-C數據負(DN)引腳(即，引腳DN)兩個資料通信引腳，其中，引腳DP用於連接USB PD TYPE-C介面的DP信號，引腳DN用於連接USB PD TYPE-C介面的DN信號。 ● The data communication pin is used to connect the data communication pin of the universal serial bus interface, wherein the pin Vbus_c provides the output voltage of the switching power supply system to the charged device through the universal serial bus interface. For example, when the generic serial bus is a USB PD Type-C (TYPE-C) interface, the PD protocol chip 202 may include a USB PD TYPE-C data positive (DP) pin (ie, pin DP) and a USB PD TYPE- C data negative (DN) pin (ie, pin DN) two data communication pins, where pin DP is used to connect the DP signal of the USB PD TYPE-C interface, and pin DN is used to connect the USB PD TYPE- DN signal of C interface.

●通道配置引腳，用於連接通用序列匯流排介面的通道配置引腳，其中，引腳Vbus_c經由該通用序列匯流排介面將開關電源系統的輸出電壓提供給被充電設備。例如，在通用序列匯流排為USB PD TYPE-C介面時，PD協議晶片202可以包括USB PD TYPE-C CC1引腳(即，引腳CC1)和USB PD TYPE-C CC2引腳(即，引腳CC2)兩個通道配置引腳，其中，引腳CC1用於連接USB PD TYPE-C介面的CC1信號，引腳CC2用於接收USB PD TYPE-C介面的CC2信號。 ● The channel configuration pin is used to connect the channel configuration pin of the universal serial bus interface, wherein the pin Vbus_c provides the output voltage of the switching power supply system to the charged device through the universal serial bus interface. For example, when the universal serial bus is a USB PD TYPE-C interface, the PD protocol chip 202 may include a USB PD TYPE-C CC1 pin (ie, pin CC1) and a USB PD TYPE-C CC2 pin (ie, lead Pin CC2) two channel configuration pins, wherein, the pin CC1 is used to connect the CC1 signal of the USB PD TYPE-C interface, and the pin CC2 is used to receive the CC2 signal of the USB PD TYPE-C interface.

●光耦驅動引腳(即，引腳OPTO)，用於連接開關電源系統中的光耦的輸出端，以實現開關電源系統的系統級環路控制。 ●The optocoupler driving pin (ie, pin OPTO) is used to connect the output end of the optocoupler in the switching power supply system, so as to realize the system-level loop control of the switching power supply system.

●電壓環路補償引腳(即，引腳VFB)，用於連接開關電源系統中的變壓器的副邊側的參考地。例如，引腳VFB可以經由第一補償電容和第一補償電阻連接到開關電源系統中的變壓器的副邊側的參考地，以實現開關電源系統的輸出恒壓的環路補償。 ● The voltage loop compensation pin (ie, pin VFB) is used to connect the reference ground of the secondary side of the transformer in the switching power supply system. For example, the pin VFB can be connected to the reference ground of the secondary side of the transformer in the switching power supply system via the first compensation capacitor and the first compensation resistor, so as to realize the loop compensation of the output constant voltage of the switching power supply system.

●電流環路補償引腳(即，引腳IFB)，用於連接開關電源系統中的變壓器的副邊側的參考地。例如，引腳IFB可以經由第二補償電容和第二補償電阻連接到開關電源系統中的變壓器的副邊側的參考地，以實現開關電源系統的輸出恒流的環路補償。 ● The current loop compensation pin (ie, pin IFB) is used to connect the reference ground of the secondary side of the transformer in the switching power supply system. For example, the pin IFB can be connected to the reference ground of the secondary side of the transformer in the switching power supply system via the second compensation capacitor and the second compensation resistor, so as to realize the loop compensation of the output constant current of the switching power supply system.

●電流檢測引腳，用於連接開關電源系統中的輸出電流檢測電阻(即，用於檢測開關電源系統的輸出電流的電阻)。例如，PD協議晶片202可以包括電流檢測正引腳(即，引腳ISP)和電流檢測負引腳(即，引腳ISN)兩個電流檢測引腳，分別用於連接到輸出電流檢測電阻的正引腳和負引腳，以實現開關電源系統的輸出恒流控制。 ● Current detection pin, used to connect the output current detection resistor in the switching power supply system (ie, the resistance used to detect the output current of the switching power supply system). For example, the PD protocol chip 202 may include two current detection pins, a current detection positive pin (ie, pin ISP) and a current detection negative pin (ie, pin ISN), which are respectively used to connect to the output current detection resistor. Positive pin and negative pin to realize output constant current control of switching power supply system.

●過溫保護引腳(即，引腳RT)，用於連接開關電源系統中的變壓器的副邊側的參考地。例如，引腳RT可以經由負溫度系統(Negative Temperature Coefficient,NTC)電阻連接到開關電源系 統中的變壓器的副邊側的參考地，以實現開關電源系統的溫度檢測和過溫保護。 ● Over-temperature protection pin (ie, pin RT), used to connect the reference ground of the secondary side of the transformer in the switching power supply system. For example, pin RT can be connected to a switching power supply system via a Negative Temperature Coefficient (NTC) resistor The reference ground of the secondary side of the transformer in the system is used to realize the temperature detection and over-temperature protection of the switching power supply system.

●晶片供電引腳(即，引腳VDD)，用於連接開關電源系統中的變壓器的副邊側的參考地。例如，引腳VDD可以經由供電電容連接到開關電源系統中的變壓器的副邊側的參考地，以實現PD協議晶片202的晶片內部供電。 ● The chip power supply pin (ie, pin VDD), used to connect the reference ground of the secondary side of the transformer in the switching power supply system. For example, the pin VDD can be connected to the reference ground of the secondary side of the transformer in the switching power supply system via a power supply capacitor, so as to realize the internal power supply of the PD protocol chip 202 .

●電壓輸入引腳(即，引腳VIN)，用於連接開關電源系統的輸出電壓匯流排。例如，引腳VIN可以經由輸出電壓檢測電阻(即，用於檢測開關電源系統的輸出電壓的電阻)連接到開關電源系統的輸出電壓匯流排，以對開關電源系統的輸出電壓進行檢測並實現不同的輸出電壓控制功能。 ● Voltage input pin (ie, pin VIN), used to connect the output voltage bus bar of the switching power supply system. For example, the pin VIN can be connected to the output voltage bus bar of the switching power supply system via an output voltage detection resistor (ie, a resistor for detecting the output voltage of the switching power supply system) to detect the output voltage of the switching power supply system and realize different the output voltage control function.

●晶片接地引腳(即，引腳GND)，連接參考地，用於提供PD協議晶片202內部的參考地。 ● The chip ground pin (ie, pin GND) is connected to the reference ground for providing the reference ground inside the PD protocol chip 202 .

●通用輸入輸出(GPIO)擴展引腳GPIO，用於擴展DP協議晶片202的輸入或輸出引腳。 ●General-purpose input and output (GPIO) expansion pins GPIO are used to expand the input or output pins of the DP protocol chip 202 .

如圖2所示，在一些實施例中，根據本創作實施例的PD協議晶片202還可以包括以下功能模組中的一個或多個功能模組： As shown in FIG. 2 , in some embodiments, the PD protocol chip 202 according to this creative embodiment may further include one or more of the following functional modules:

●閘極驅動模組，連接到輸出開關，用於實現對輸出開關的閘極驅動。 ●The gate drive module is connected to the output switch to realize the gate drive of the output switch.

●協定控制模組，連接到資料通信引腳(例如，引腳DP和引腳DN)和通道配置引腳(例如，引腳CC1和引腳CC2)，用於實現開關電源系統與被充電設備之間的通訊，以及基於來自被充電設備的命令實現不同的電壓輸出、電流輸出、以及保護控制。 Protocol control module, connected to data communication pins (eg, pin DP and pin DN) and channel configuration pins (eg, pin CC1 and pin CC2), used to implement switching power supply systems and charged devices Communication between them, and realize different voltage output, current output, and protection control based on commands from the charged device.

●電壓/電流控制模組，連接到引腳OPTO、引腳VFB、以及引腳IFB中的一個或多個引腳，用於實現以下的一個或多個功能：根據引腳OPTO處的電壓實現開關電源系統的系統級環路控制、根據引腳VFB處的電壓實現開關電源系統的輸出恒壓的環路補償、根據引 腳IFB處的電壓實現開關電源系統的輸出恒流的環路補償。 The voltage/current control module is connected to one or more pins of pin OPTO, pin VFB, and pin IFB, and is used to realize one or more of the following functions: according to the voltage at pin OPTO The system-level loop control of the switching power supply system, the loop compensation of the output constant voltage of the switching power supply system according to the voltage at the pin VFB, according to the introduction The voltage at the pin IFB realizes the loop compensation of the output constant current of the switching power supply system.

●電流檢測模組，連接到電流檢測引腳(例如，引腳ISP和引腳ISN)，用於根據電流檢測引腳處的差值電壓進行放大，實現開關電源系統的輸出恒流控制。 ●The current detection module is connected to the current detection pins (for example, the pin ISP and the pin ISN), and is used to amplify according to the difference voltage at the current detection pin to realize the output constant current control of the switching power supply system.

●溫度檢測及過溫保護模組，連接到引腳RT，用於根據引腳RT處的電壓實現開關電源系統的溫度檢測和過溫保護。 ●Temperature detection and over-temperature protection module, connected to pin RT, to realize temperature detection and over-temperature protection of switching power supply system according to the voltage at pin RT.

●欠壓鎖定/低壓差線性穩壓器(UVLO/LDO)模組，連接到引腳VIN和引腳VDD，用於根據引腳VIN處的電壓啟動或關斷PD協議晶片202(例如，在引腳VIN處的電壓大於預定的欠壓鎖定電壓時，啟動PD協議晶片202，否則關斷PD協議晶片202)，並基於引腳VDD處的電壓提供晶片內部電源。 An under-voltage lockout/low dropout linear regulator (UVLO/LDO) module, connected to pin VIN and pin VDD, for enabling or shutting down PD protocol die 202 based on the voltage at pin VIN (eg, in When the voltage at the pin VIN is greater than the predetermined under-voltage lockout voltage, the PD protocol chip 202 is turned on, otherwise the PD protocol chip 202 is turned off, and the chip internal power supply is provided based on the voltage at the pin VDD.

●保護控制模組，用於在PD協議晶片202發生故障時實現保護功能，避免PD協議晶片202的損壞。 ● The protection control module is used to realize the protection function when the PD protocol chip 202 fails, so as to avoid the damage of the PD protocol chip 202 .

●邏輯控制模組，連接到協定控制模組、閘極驅動器模組、溫度檢測及過溫保護模組、電壓/電流控制模組、電流檢測模組、以及保護控制模組中的一個或多個功能模組，用於實現PD協議晶片202內部的各個功能模組的邏輯控制。 Logic control module, connected to one or more of protocol control module, gate driver module, temperature detection and over-temperature protection module, voltage/current control module, current detection module, and protection control module A functional module is used to implement the logic control of each functional module inside the PD protocol chip 202 .

●微控制單元(MCU)模組，連接到引腳GPIO，用於實現PD協議晶片202的內部控制和GPIO擴展功能。 ●Micro Control Unit (MCU) module, connected to the pin GPIO, for realizing the internal control of the PD protocol chip 202 and the GPIO expansion function.

圖3示出了採用根據本創作實施例的PD協議晶片的返馳變換器電源200的電路圖。從圖3可以看出，由於PD協議晶片202集成了原本連接到返馳變換器電源系統100的輸出電壓匯流排、用於控制是否向被充電設備提供輸出電壓的輸出開關，相比返馳變換器電源系統100，返馳變換器電源系統200包含的元器件的數目更少，成本更低。 FIG. 3 shows a circuit diagram of a flyback converter power supply 200 employing a PD protocol wafer according to an embodiment of the present invention. As can be seen from FIG. 3 , since the PD protocol chip 202 integrates the output voltage bus bar originally connected to the flyback converter power supply system 100 and the output switch used to control whether to provide the output voltage to the charged device, compared with the flyback converter The inverter power supply system 100, the flyback converter power supply system 200 includes fewer components and lower costs.

需要說明的是，根據本創作實施例的PD協議晶片不僅可以應用於返馳變換器電源，而且可以應用于諸如，正激式(FORWARD)、半橋式(HALF-BRIGE)、全橋式(FULL-BRIGE)等各種架構的開關電 源系統。 It should be noted that, the PD protocol chip according to the present creative embodiment can be applied not only to the flyback converter power supply, but also to applications such as FORWARD, HALF-BRIGE, full-bridge ( FULL-BRIGE) and other architectures of switching power source system.

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權利要求而非上述描述定義，並且落入權利要求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.

CC1:USB PD TYPE-C CC1引腳 CC1: USB PD TYPE-C CC1 pin

CC2:USB PD TYPE-C CC2引腳 CC2: USB PD TYPE-C CC2 pin

DN:USB PD TYPE-C數據負引腳 DN: USB PD TYPE-C data negative pin

DP:USB PD TYPE-C資料正引腳 DP: USB PD TYPE-C data positive pin

GND:晶片接地引腳 GND: Chip ground pin

GPIO:通用輸入輸出擴展引腳 GPIO: general-purpose input and output expansion pins

IFB:電流環路補償引腳 IFB: Current Loop Compensation Pin

ISN:電流檢測負引腳 ISN: Current Sense Negative Pin

ISP:電流檢測正引腳 ISP: Current Sense Positive Pin

MCU:微控制單元模組 MCU: Micro Control Unit Module

OPTO:光耦驅動引腳 OPTO: Optocoupler drive pin

RT:過溫保護引腳 RT: Over temperature protection pin

UVLO/LDO:欠壓鎖定/低壓差線性穩壓器模組 UVLO/LDO: Under Voltage Lockout/Low Dropout Linear Regulator Module

Vbus:輸出電壓匯流排引腳 Vbus: output voltage bus pin

Vbus_c:輸出電壓匯出引腳 Vbus_c: output voltage sink pin

VDD:晶片供電引腳 VDD: chip power supply pin

VFB:電壓環路補償引腳 VFB: Voltage loop compensation pin

VIN:電壓輸入引腳 VIN: Voltage input pin

vin_div:輸出電壓分壓檢測電壓 vin_div: output voltage divider detection voltage

R1:分壓檢測電路上電阻 R1: Resistor on the voltage divider detection circuit

R2:分壓檢測電路下電阻 R2: Resistance under the voltage divider detection circuit

Claims (10)

一種用於開關電源系統的功率傳輸協議晶片，其特徵在於，包括： A power transmission protocol chip for a switching power supply system, characterized in that it includes: 輸出電壓匯流排引腳，用於從所述開關電源系統的輸出電壓匯流排接收所述開關電源系統的輸出電壓； an output voltage bus bar pin for receiving the output voltage of the switching power supply system from the output voltage bus bar of the switching power supply system; 輸出電壓匯出引腳，用於將所述開關電源系統的輸出電壓提供給被充電設備；以及 an output voltage sink pin for supplying the output voltage of the switching power supply system to the charged device; and 輸出開關，其中： output switch, where: 所述輸出開關的汲極連接到所述輸出電壓匯流排引腳， The drain of the output switch is connected to the output voltage bus bar pin, 所述輸出開關的源極連接到所述輸出電壓匯出引腳， The source of the output switch is connected to the output voltage sink pin, 當所述輸出開關處於導通狀態時，所述開關電源系統的輸出電壓經由所述輸出電壓匯流排引腳、所述輸出開關、以及所述輸出電壓匯出引腳被提供給所述被充電設備。 When the output switch is in an on state, the output voltage of the switching power supply system is supplied to the charged device via the output voltage bus pin, the output switch, and the output voltage bus pin . 如請求項1所述的功率傳輸協議晶片，其特徵在於，還包括： The power transmission protocol chip according to claim 1, further comprising: 資料通信引腳，用於連接通用序列匯流排介面的資料通信引腳，所述輸出電壓匯出引腳經由所述通用序列匯流排介面將所述開關電源系統的輸出電壓提供給所述被充電設備； a data communication pin for connecting to a data communication pin of a universal serial bus interface, the output voltage sink pin provides the output voltage of the switching power supply system to the charged via the universal serial bus interface equipment; 通道配置引腳，用於連接所述通用序列匯流排介面的通道配置引腳； a channel configuration pin, used to connect the channel configuration pin of the universal serial bus interface; 協定控制模組，連接到所述資料通信引腳和所述通道配置引腳，用於實現所述開關電源系統與所述被充電設備之間的通訊。 The protocol control module is connected to the data communication pin and the channel configuration pin, and is used to realize the communication between the switching power supply system and the charged device. 如請求項2所述的功率傳輸協議晶片，其特徵在於，所述協定控制模組還用於基於來自所述被充電設備的命令，實現不同的電壓輸出、電流輸出、以及保護控制。 The power transmission protocol chip according to claim 2, wherein the protocol control module is further configured to implement different voltage output, current output, and protection control based on commands from the charged device. 如請求項1所述的功率傳輸協議晶片，其特徵在於，還包括： The power transmission protocol chip according to claim 1, further comprising: 光耦驅動引腳，用於連接所述開關電源系統中的光耦的輸出端；以及 an optocoupler drive pin for connecting the output end of the optocoupler in the switching power supply system; and 電壓/電流控制模組，連接到所述光耦驅動引腳，用於根據所述光耦驅動引腳處的電壓實現所述開關電源系統的系統級環路控制。 The voltage/current control module is connected to the optocoupler driving pin, and is used for realizing the system-level loop control of the switching power supply system according to the voltage at the optocoupler driving pin. 如請求項1所述的功率傳輸協議晶片，其特徵在於，還包括： The power transmission protocol chip according to claim 1, further comprising: 電壓環路補償引腳，用於連接所述開關電源系統中的變壓器的副邊側的參考地；以及 a voltage loop compensation pin for connecting the reference ground of the secondary side of the transformer in the switching power supply system; and 電壓/電流控制模組，連接到所述電壓環路補償引腳，用於根據所述電壓環路補償引腳處的電壓實現所述開關電源系統的輸出恒壓的環路補償。 The voltage/current control module is connected to the voltage loop compensation pin, and is used for realizing loop compensation of the output constant voltage of the switching power supply system according to the voltage at the voltage loop compensation pin. 如請求項1所述的功率傳輸協議晶片，其特徵在於，還包括： The power transmission protocol chip according to claim 1, further comprising: 電流環路補償引腳，用於連接所述開關電源系統中的變壓器的副邊側的參考地；以及 a current loop compensation pin for connecting the reference ground of the secondary side of the transformer in the switching power supply system; and 電壓/電流控制模組，連接到所述電流環路補償引腳，用於根據所述電流環路補償引腳處的電壓實現所述開關電源系統的輸出恒流的環路補償。 The voltage/current control module is connected to the current loop compensation pin, and is used for realizing loop compensation of the output constant current of the switching power supply system according to the voltage at the current loop compensation pin. 如請求項1所述的功率傳輸協議晶片，其特徵在於，還包括： The power transmission protocol chip according to claim 1, further comprising: 電流檢測引腳，用於連接所述開關電源系統中的輸出電流檢測電阻； a current detection pin for connecting the output current detection resistor in the switching power supply system; 電流檢測模組，連接到所述電流檢測引腳，用於根據所述電流檢測引腳處的電壓實現所述開關電源系統的輸出恒流控制。 The current detection module is connected to the current detection pin, and is used for realizing the output constant current control of the switching power supply system according to the voltage at the current detection pin. 如請求項1所述的功率傳輸協議晶片，其特徵在於，還包括： The power transmission protocol chip according to claim 1, further comprising: 過溫保護引腳，用於連接所述開關電源系統中的變壓器的副邊側的參考地；以及 an over-temperature protection pin for connecting the reference ground of the secondary side of the transformer in the switching power supply system; and 溫度檢測及過溫保護模組，連接到所述過溫保護引腳，用於根據所述過溫保護引腳處的電壓實現所述開關電源系統的溫度檢測和過溫保護。 The temperature detection and over-temperature protection module is connected to the over-temperature protection pin, and is used for realizing the temperature detection and over-temperature protection of the switching power supply system according to the voltage at the over-temperature protection pin. 如請求項2所述的功率傳輸協議晶片，其特徵在於，所述通用序列匯流排介面是類型C通用序列匯流排介面。 The power transfer protocol chip of claim 2, wherein the universal serial bus interface is a type C universal serial bus interface. 一種開關電源系統，其特徵在於，包括請求項1至9中任一項所述的功率傳輸協議晶片。 A switching power supply system, characterized in that it includes the power transmission protocol chip described in any one of claim 1 to 9.
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