ZHCSD04E
November 2014 – March 2022
TPS65400
PRODUCTION DATA
1
特性
2
应用
3
说明
4
Revision History
5
说明(续)
6
Pin Configuration and Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
System Characteristics
7.7
Operational Parameters
7.8
Package Dissipation Ratings
7.9
Typical Characteristics: System Efficiency
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagrams
8.3
Feature Description
8.3.1
Startup Timing and Power Sequencing
8.3.1.1
Startup Timing
8.3.1.2
External Sequencing
8.3.1.3
Internal Sequencing
8.3.2
UVLO and Precision Enables
8.3.3
Soft-Start and Prebiased Startup
8.3.3.1
Analog Soft-Start (Default) and Digital Soft-Start
8.3.3.2
Soft-Start Capacitor Selection
8.3.4
PWM Switching Frequency Selection
8.3.5
Clock Synchronization
8.3.6
Phase Interleaving
8.3.7
Fault Handling
8.3.8
OCP for SW1 to SW4
8.3.9
Overcurrent Protection for SW1 to SW4 in Current Sharing Operation
8.3.10
Recovery on Power Loss
8.3.11
Feedback Compensation
8.3.12
Adjusting Output Voltage
8.3.13
Digital Interface – PMBus
8.3.14
Initial Configuration
8.4
Device Functional Modes
8.4.1
CCM Operation Mode
8.4.2
CCM/DCM Operation Mode
8.4.3
Current Sharing Mode
8.5
Programming
8.5.1
PMBus
8.5.1.1
Overview
8.5.1.2
PMBus Protocol
8.5.1.2.1
PMBus Protocol
8.5.1.2.2
Transactions (No PEC)
8.5.1.2.3
Addressing
8.5.1.2.4
Startup
8.5.1.2.5
Bus Speed
8.5.1.2.6
I2CALERT Terminal
8.5.1.2.7
CONTROL Terminal
8.5.1.2.8
Packet Error Checking
8.5.1.2.9
Group Commands
8.5.1.2.10
Unsupported Features
8.5.2
PMBus Register Descriptions
8.5.2.1
Overview
8.5.2.2
Memory Model
8.5.2.3
Data Formats
8.5.2.4
Fault Monitoring
8.6
Register Maps
8.6.1
PMBus Core Commands
8.6.1.1
(00h) PAGE
8.6.1.2
(01h) OPERATION
8.6.1.3
(03h) CLEAR_FAULTS
8.6.1.4
(10h) WRITE_PROTECT
8.6.1.5
(11h) STORE_DEFAULT_ALL
8.6.1.6
(19h) CAPABILITY
8.6.1.7
(78h) STATUS_BYTE
8.6.1.8
(79h) STATUS_WORD
8.6.1.9
(7Ah) STATUS_VOUT
8.6.1.10
(80h) STATUS_MFR_SPECIFIC
8.6.1.11
(98h) PMBUS_REVISION
8.6.1.12
(ADh) IC_DEVICE_ID
8.6.1.13
(AEh) IC_DEVICE_REV
8.6.2
Manufacturer-Specific Commands
8.6.2.1
(D0h) USER_DATA_BYTE_00
8.6.2.2
(D1h) USER_DATA_BYTE_01
8.6.2.3
(D2h) PIN_CONFIG_00
8.6.2.4
(D3h) PIN_CONFIG_01
8.6.2.5
(D4h) SEQUENCE_CONFIG
8.6.2.6
(D5h) SEQUENCE_ORDER
8.6.2.7
(D6h) IOUT_MODE
8.6.2.8
(D7h) FREQUENCY_PHASE
8.6.2.9
(D8h) VREF_COMMAND
8.6.2.10
(D9h) IOUT_MAX
8.6.2.11
(DAh) USER_RAM_00
8.6.2.12
(DBh) SOFT_RESET
8.6.2.13
(DCh) RESET_DELAY
8.6.2.14
(DDh) TON_TOFF_DELAY
8.6.2.15
(DEh) TON_TRANSITION_RATE
8.6.2.16
(DFh) VREF_TRANSITION_RATE
8.6.2.17
(F0h) SLOPE_COMPENSATION
8.6.2.18
(F1h) ISENSE_GAIN
8.6.2.19
(FCh) DEVICE_CODE
9
Application and Implementation
9.1
Application Information
9.2
Typical Applications
9.2.1
Internal Operation Typical Application
9.2.1.1
Design Requirements
9.2.1.2
Detailed Design Procedure
9.2.1.2.1
Component Selection
9.2.1.2.1.1
Output Inductor Selection
9.2.1.2.1.2
Output Capacitor Selection
9.2.1.2.2
Internal Operation With Some Switchers Disabled
9.2.1.2.3
Internal Operation With All Switchers Enabled
9.2.1.2.4
Example Configuration
9.2.1.2.5
Unused Switchers
9.2.1.3
Application Curves
9.2.2
Current Sharing Typical Application
9.2.2.1
Design Requirements
9.2.2.2
Detailed Design Procedure
9.2.2.2.1
Current Sharing Timing Example
9.2.3
External Sequencing Application
9.2.3.1
Design Requirements
9.2.3.2
Detailed Design Procedure
9.2.3.2.1
External Sequencing Through PG Pins
9.2.3.2.2
External Sequencing Through SW
9.2.3.2.3
Example Configuration
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Documentation Support
12.1.1
Related Documentation
12.1.2
Related Parts
12.2
接收文档更新通知
12.3
术语表
12.4
Trademarks
12.5
Electrostatic Discharge Caution
12.6
术语表
13
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
RGZ|48
MPQF123F
散热焊盘机械数据 (封装 | 引脚)
RGZ|48
QFND014T
订购信息
zhcsd04e_oa
zhcsd04e_pm
1
特性
每个开关稳压器的效率高达 95%
开关稳压器规格:
输入电压范围:4.5V 至 18V
V
OUT
范围:0.6V-90%V
IN
SW1、SW2 I
OUT
:4A(最大值)
SW3、SW4 I
OUT
:2A(最大值)
预偏置启动算法可最大限度地减小启动期间的电压骤降
内部欠压锁定 (UVLO)、过流保护 (OCP)、过压保护 (OVP) 和过热保护 (OTP)
符合 AECQ-100 1 级标准
热增强型 7mm × 7mm 48 引脚 0.5mm 间距 VQFN 封装
引脚访问特性:
通过外部反馈电阻器可调节 V
OUT
通过每个开关的精密使能引脚实现时序控制
通过电阻器在 275 kHz 至 2.2 MHz 范围内调节 PWM 开关频率
时钟同步输入和时钟输出
通过外部电容器实现软启动延迟
必要时可通过在 SW1 和 SW2 之间以及 SW3 和 SW4 之间进行电流共享来满足高电流需求
PMBus 运行时控制和状态
通过调整 V
REF
可实现运行时电压定位
启用和禁用每个开关
故障和状态监控
用户可配置的 PMBus/I
2
C 选项,保存在 EEPROM 中
电源导通和关断时序控制
可基于固定延时时间或依赖 PGOOD 实现时序控制
可通过 VREF 配置实现初始电压定位
可针对每个开关调节 PWM 频率
可针对每个开关单独进行 PWM 相位对齐以最大限度地减小纹波和电容器尺寸
可调节每个稳压器的电流限值以优化电感器的尺寸和成本
软启动时间
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