ZHCSH29B
April 2017 – December 2018
PRODUCTION DATA.
1
特性
2
应用
简化原理图
3
说明
效率与输出电流间的关系
4
修订历史记录
Device Images
5
Pin Configuration and Functions
Pin 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 Serial Bus Timing Requirements
6.7
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Descriptions
7.3.1
DC-DC Converters
7.3.1.1
Overview
7.3.1.2
Transition Between PWM and PFM Modes
7.3.1.3
Buck Converter Load-Current Measurement
7.3.1.4
Spread-Spectrum Mode
7.3.2
Sync Clock Functionality
7.3.3
Power-Up
7.3.4
Regulator Control
7.3.4.1
Enabling and Disabling Regulators
7.3.4.2
Changing Output Voltage
7.3.5
Enable and Disable Sequences
7.3.6
Device Reset Scenarios
7.3.7
Diagnosis and Protection Features
7.3.7.1
Power-Good Information (PGOOD pin)
7.3.7.2
Warnings for Diagnosis (Interrupt)
7.3.7.2.1
Output Power Limit
7.3.7.2.2
Thermal Warning
7.3.7.3
Protection (Regulator Disable)
7.3.7.3.1
Short-Circuit and Overload Protection
7.3.7.3.2
Overvoltage Protection
7.3.7.3.3
Thermal Shutdown
7.3.7.4
Fault (Power Down)
7.3.7.4.1
Undervoltage Lockout
7.3.8
GPIO Signal Operation
7.3.9
Digital Signal Filtering
7.4
Device Functional Modes
7.4.1
Modes of Operation
7.5
Programming
7.5.1
I2C-Compatible Interface
7.5.1.1
Data Validity
7.5.1.2
Start and Stop Conditions
7.5.1.3
Transferring Data
7.5.1.4
I2C-Compatible Chip Address
7.5.1.5
Auto-Increment Feature
7.6
Register Maps
7.6.1
Register Descriptions
7.6.1.1
OTP_REV
7.6.1.2
BUCK0_CTRL1
7.6.1.3
BUCK1_CTRL1
7.6.1.4
BUCK2_CTRL1
7.6.1.5
BUCK3_CTRL1
7.6.1.6
BUCK0_VOUT
7.6.1.7
BUCK0_FLOOR_VOUT
7.6.1.8
BUCK1_VOUT
7.6.1.9
BUCK1_FLOOR_VOUT
7.6.1.10
BUCK2_VOUT
7.6.1.11
BUCK2_FLOOR_VOUT
7.6.1.12
BUCK3_VOUT
7.6.1.13
BUCK3_FLOOR_VOUT
7.6.1.14
BUCK0_DELAY
7.6.1.15
BUCK1_DELAY
7.6.1.16
BUCK2_DELAY
7.6.1.17
BUCK3_DELAY
7.6.1.18
GPIO2_DELAY
7.6.1.19
GPIO3_DELAY
7.6.1.20
RESET
7.6.1.21
CONFIG
7.6.1.22
INT_TOP1
7.6.1.23
INT_TOP2
7.6.1.24
INT_BUCK_0_1
7.6.1.25
INT_BUCK_2_3
7.6.1.26
TOP_STAT
7.6.1.27
BUCK_0_1_STAT
7.6.1.28
BUCK_2_3_STAT
7.6.1.29
TOP_MASK1
7.6.1.30
TOP_MASK2
7.6.1.31
BUCK_0_1_MASK
7.6.1.32
BUCK_2_3_MASK
7.6.1.33
SEL_I_LOAD
7.6.1.34
I_LOAD_2
7.6.1.35
I_LOAD_1
7.6.1.36
PGOOD_CTRL1
7.6.1.37
PGOOD_CTRL2
7.6.1.38
PGOOD_FLT
7.6.1.39
PLL_CTRL
7.6.1.40
PIN_FUNCTION
7.6.1.41
GPIO_CONFIG
7.6.1.42
GPIO_IN
7.6.1.43
GPIO_OUT
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.1.1
Inductor Selection
8.2.1.2
Input Capacitor Selection
8.2.1.3
Output Capacitor Selection
8.2.1.4
Snubber Components
8.2.1.5
Supply Filtering Components
8.2.2
Detailed Design Procedure
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
器件和文档支持
11.1
器件支持
11.1.1
第三方产品免责声明
11.2
接收文档更新通知
11.3
社区资源
11.4
商标
11.5
静电放电警告
11.6
术语表
12
机械、封装和可订购信息
封装选项
请参考 PDF 数据表获取器件具体的封装图。
机械数据 (封装 | 引脚)
RNF|26
散热焊盘机械数据 (封装 | 引脚)
订购信息
zhcsh29b_oa
zhcsh29b_pm
1
特性
符合汽车应用 要求
具有符合 AEC-Q100 标准的下列结果:
器件温度 1 级:-40℃ 至 +125℃ 的环境运行温度范围
输入电压:2.8V 至
5.5
V
输出电压:0.6V 至 3.36V
四个高效降压直流/直流转换器内核:
总
输出电流
高达 10A
输出电压转换率 3.8mV/µs
4
MHz 开关频率
扩频模式和相位交错
可配置通用 I/O (GPIO)
I
2
C 兼容接口,支持标准 (100kHz)、快速 (400kHz)、快速+ (1MHz) 和高速 (3.4MHz) 四种模式
具有可编程屏蔽的中断功能
可编程电源正常信号 (PGOOD)
输出短路和过载保护
过热警告和保护
过压保护 (OVP) 和欠压锁定 (UVLO)