[原创] Cypress EZ－PD CCG3PAUSB Type－C端口控制方案

电子工程师 2018-02-04 758

电源/新能源

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描述

cypress公司的EZ-PD™ CCG3PA是高度集成的USB Type-C端口控制器,和最新的USB Type-C和PD标准兼容.器件采用Cypress公司的M0S8技术和32位ARM® Cortex™-M0处理器,64KB闪存,完整的Type-C USB-PD收发器,Type-C端口所需的所有端电阻,用于电压(VBUS)稳压的反馈控制电路和系统级ESD保护.主要用在PC电源适配器,移动充电器,汽车充电器和电源柜应用.本文介绍了EZ-PD™ CCG3PA主要特性,逻辑框图和内部框图,多种应用电路以及评估板CY4532 EZ-PD CCG3PA EVK(主板和电源板)主要特性,电路图,材料清单和PCB设计图.

EZ-PD™ CCG3PA is Cypress’s highly integrated USB Type-C port controller that complies with the latest USB Type-C and PDstandards and is targeted for PC power adapters, mobile chargers, car chargers, and power bank applications. In such applications,CCG3PA provides additional functionalities and BOM integration advantages. CCG3PA uses Cypress’s proprietary M0S8 technologywith a 32-bit ARM® Cortex™-M0 processor, 64KB flash, a complete Type-C USB-PD transceiver, all termination resistors required fora Type-C port, an integrated feedback control circuitry for voltage (VBUS) regulation and system-level ESD protection. It is availablein 24-pin QFN and 16-pin SOIC packages.

EZ-PD™ CCG3PA主要特性:

Type-C Support and USB-PD Support
■ Supports USB PD3.0 Version 1.1 Spec including ProgrammablePower Supply Mode
■ Configurable resistors RP and RD
■ Supports one USB Type-C port and one Type-A port
2x Legacy/Proprietary Charging Blocks
■ Supports QC 4.0, Apple charging 2.4A, AFC, BC 1.2
■ Integrates all required terminations on DP/DM lines
Integrated Voltage (VBUS) Regulation and CurrentSense Amplifier
■ Analog regulation of secondary side feedback node (directfeedback or opto coupler)
■ Integrated shunt regulator function for VBUS control
■ Constant current or constant voltage mode
■ Supports low-side current sensing for constant current control
System-Level Fault Protection
■ On-chip OVP, OCP, UVP, and SCP
■ Supports OTP through integrated ADC circuit
32-bit MCU Subsystem
■ ARM Cortex-M0 CPU
■ 64-KB Flash
■ 8-KB SRAM
Clocks and Oscillators
■ Integrated oscillator eliminating the need for external clock
Power
■ 3.0V to 24.5V operation (30-V tolerant)
■ Deep Sleep: 5 μA, Sleep: 3 mA
System-Level ESD Protection
■ On CC, VBUS, and DP/DM pins
■ ± 8-kV Contact Discharge and ±15-kV Air Gap Discharge basedon IEC61000-4-2 level 4C
Packages
■ 24-pin QFN and 16-pin SOIC
■ Supports extended industrial temperature range(–40℃ to +105℃)

图1.EZ-PD™ CCG3PA逻辑框图

图2.EZ-PD™ CCG3PA内部框图

图3.EZ-PD™ CCG3PA带光耦反馈控制的PC电源适配器应用电路图

图4.EZ-PD™ CCG3PA带直接反馈控制的手机电源适配器应用电路图

图5.EZ-PD™ CCG3PA汽车充电器应用电路图

图6.EZ-PD™ CCG3PA电源柜应用电路图

评估板CY4532 EZ-PD CCG3PA EVK

The CY4532 EZ-PD™ CCG3PA Evaluation Kit (EVK) is based on the CCG3PA product family of Cypress’s USB Type-C microcontrollers. This EVK is intended to be an evaluation vehicle for USB Type-C Power Adapter (PA) and USB Type-C Power Bank (PB) applications. The kit can be configured for a PA or PB application using a combination of firmware, jumper settings on the kit hardware, and external accessories. The following paragraphs provide a brief description of both applications:

USB Type-C Power Adapter (PA): To charge a device such as a mobile phone or notebook which supports battery charging through the Type-C interface. The device can be connected to the Type-C port on the CY4532 EVK’s Main Board to be charged as per the USB Power Delivery (PD) protocol. This application requires a DC input to be supplied to the EVK.

In addition to charging through the USB Type-C port, the EVK also supports charging through a USB Type-A port to enable battery charging of legacy devices. The CY4532 EVK supports Battery Charging (BC) 1.2, Qualcomm Quick Charge (QC) 3.0, Apple 2.4A charging and Samsung Adaptive Fast Charging (AFC) charging protocols on the USB Type-A port.

USB Type-C Power Bank (PB): This application is similar to the PA application. Here, a 1-Cell or 2-Cell Lithium-ion battery, which is connected to the CY4532 EVK acts as the power source to support charging on USB Type-C and USB Type-A ports. In addition, the battery can be charged using a USB Type-C Power Adapter connected to the USB Type-C port of the EVK’s Main Board.

In addition to the applications described above, the CY4532 Power Board can be used as a Programmer for Cypress EZ-PD CCGx Products supporting Configuration Channel (CC) bootloading. Refer to 5. for more details.

评估板CY4532 EZ-PD CCG3PA EVK包括:

The CY4532 EZ-PD CCG3PA EVK consists of the following contents:
CY4532 EZ-PD CCG3PA EVK Power Board
CY4532 EZ-PD CCG3PA EVK Main Board (pre-mounted on the CY4532 EVK Power Board)
12 V 24 W DC Power Adapter
Quick Start Guide