ZHCSKY4B
November 2018 – December 2020
TPS55288
PRODUCTION DATA
1
特性
2
应用
3
说明
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
I2C Timing Characteristics
6.7
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
VCC Power Supply
7.3.2
Operation Mode Setting
7.3.3
Input Undervoltage Lockout
7.3.4
Enable and Programmable UVLO
7.3.5
Soft Start
7.3.6
Shutdown and Load Discharge
7.3.7
Switching Frequency
7.3.8
Switching Frequency Dithering
7.3.9
Inductor Current Limit
7.3.10
Internal Charge Path
7.3.11
Output Voltage Setting
7.3.12
Output Current Monitoring and Cable Voltage Droop Compensation
7.3.13
Integrated Gate Drivers
7.3.14
Output Current Limit
7.3.15
Overvoltage Protection
7.3.16
Output Short Circuit Protection
7.3.17
Thermal Shutdown
7.4
Device Functional Modes
7.4.1
PWM Mode
7.4.2
Power Save Mode
7.5
I2C Serial Interface
7.5.1
Data Validity
7.5.2
START and STOP Conditions
7.5.3
Byte Format
7.5.4
Acknowledge (ACK) and Not Acknowledge (NACK)
7.5.5
Slave Address and Data Direction Bit
7.5.6
Single Read and Write
7.5.7
Multi-Read and Multi-Write
7.6
Register Maps
7.6.1
REF Register (Address = 0h, 1h) [reset = 11010010h, 00000000h]
7.6.2
IOUT_LIMIT Register (Address = 2h) [reset = 11100100h]
7.6.3
VOUT_SR Register (Address = 3h) [reset = 00000001h]
7.6.4
VOUT_FS Register (Address = 4h) [reset = 00000011h]
7.6.5
CDC Register (Address = 5h) [reset = 11100000h]
7.6.6
MODE Register (Address = 6h) [reset = 00100000h]
7.6.7
STATUS Register (Address = 7h) [reset = 00000011h]
7.6.8
Register Summary
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
USB PD Power Supply Detailed Design Procedure
8.2.2.1
Switching Frequency
8.2.2.2
Output Voltage Setting
8.2.2.3
Inductor Selection
8.2.2.4
Input Capacitor
8.2.2.5
Output Capacitor
8.2.2.6
Output Current Limit
8.2.2.7
Loop Stability
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Device Support
11.1.1
第三方米6体育平台手机版_好二三四免责声明
11.2
接收文档更新通知
11.3
支持资源
11.4
Trademarks
11.5
静电放电警告
11.6
术语表
12
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
RPM|26
MPQF533A
散热焊盘机械数据 (封装 | 引脚)
RPM|26
QFND631
订购信息
zhcsky4b_oa
zhcsky4b_pm
1
特性
可编程电源 (PPS) 支持 USB 供电 (USB PD)
宽输入电压范围:2.7V 至 36V
可编程输出电压范围:0.8V 至 22V,步长为 20mV
±1% 基准电压精度
电缆上压降的可调输出电压补偿
可编程输出电流限值高达 6.35A,阶跃为 50mA
±5% 精密输出电流监测
I
2
C 接口
在整个负载范围内具有高效率
V
IN
= 12V、V
OUT
= 20V 且 I
OUT
= 3A 时效率为 97%
轻负载状态下的可编程 PFM 和 FPWM 模式
避免频率干扰和串扰
可选的时钟同步
可编程开关频率范围为 200 kHz 至 2.2 MHz
降低 EMI
可选可编程扩展频谱
无引线封装
丰富的保护特性
输出过压保护
利用断续模式实现输出短路保护
热关断保护
可编程平均电感器电流限制高达 16A
小解决方案尺寸
开关频率高达 2.2 MHz(最大值)
4.0mm × 3.5mm
HotRod™
QFN 封装
固定 4ms 软启动时间
使用 TPS55288 并借助
WEBENCH®
Power Designer
创建定制设计
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