ZHCSPB0
april 2023
LM5171-Q1
ADVANCE INFORMATION
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
Timing Requirements
6.7
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Bias Supplies and Voltage Reference (VCC, VDD, and VREF)
7.3.2
Undervoltage Lockout (UVLO) and Controller Enable or Disable
7.3.3
High Voltage Inputs (HV1, HV2)
7.3.4
Current Sense Amplifier
7.3.5
Control Commands
7.3.5.1
Channel Enable Commands (EN1, EN2)
7.3.5.2
Direction Command (DIR1 and DIR2)
7.3.5.3
Channel Current Setting Commands (ISET1 and ISET2)
7.3.6
Channel Current Monitor (IMON1, IMON2)
7.3.6.1
Individual Channel Current Monitor
7.3.6.2
Multiphase Total Current Monitoring
7.3.7
Cycle-by-Cycle Peak Current Limit (IPK)
7.3.8
Inner Current Loop Error Amplifier
7.3.9
Outer Voltage Loop Error Amplifier
7.3.10
Soft Start, Diode Emulation, and Forced PWM Control (SS/DEM1 and SS/DEM2)
7.3.10.1
Soft-Start Control by the SS/DEM Pins
7.3.10.2
DEM Programming
7.3.10.3
FPWM Programming and Dynamic FPWM and DEM Change
7.3.10.4
SS Pin as the Restart Timer
7.3.11
Gate Drive Outputs, Dead Time Programming and Adaptive Dead Time (HO1, HO2, LO1, LO2, DT/SD)
7.3.12
Emergent Latched Shutdown (DT/SD)
7.3.13
PWM Comparator
7.3.14
Oscillator (OSC)
7.3.15
Synchronization to an External Clock (SYNCI, SYNCO)
7.3.16
Overvoltage Protection (OVP)
7.3.17
Multiphase Configurations (SYNCO, OPT)
7.3.17.1
Multiphase in Star Configuration
7.3.17.2
Daisy-Chain Configurations for 2, 3, or 4 Phases parallel operations
7.3.17.3
Daisy-Chain configuration for 6 or 8 phases parallel operation
7.3.18
Thermal Shutdown
7.4
Programming
7.4.1
Dynamic Dead Time Adjustment
7.4.2
UVLO Programming
7.5
I2C Serial Interface
7.5.1
REGFIELD Registers
8
Application and Implementation
8.1
Application Information
8.1.1
Small Signal Model
8.1.1.1
Current Loop Small Signal Model
8.1.1.2
Current Loop Compensation
8.1.1.3
Voltage Loop Small Signal Model
8.1.1.4
Voltage Loop Compensation
8.2
Typical Application
8.2.1
60-A, Dual-Phase, 48-V to 12-V Bidirectional Converter
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.2.1
Determining the Duty Cycle
8.2.1.2.2
Oscillator Programming
8.2.1.2.3
Power Inductor, RMS and Peak Currents
8.2.1.2.4
Current Sense (RCS)
8.2.1.2.5
Current Setting Limits (ISETx)
8.2.1.2.6
Peak Current Limit
8.2.1.2.7
Power MOSFETS
8.2.1.2.8
Bias Supply
8.2.1.2.9
Boot Strap
8.2.1.2.10
OVP
8.2.1.2.11
Dead Time
8.2.1.2.12
Channel Current Monitor (IMONx)
8.2.1.2.13
UVLO Pin Usage
8.2.1.2.14
HVx Pin Configuration
8.2.1.2.15
Loop Compensation
8.2.1.2.16
Soft Start
8.2.1.2.17
PWM to ISET Pins
8.2.1.3
Application Curves
8.3
Power Supply Recommendations
8.4
Layout
8.4.1
Layout Guidelines
8.4.2
Layout Examples
9
Device and Documentation Support
9.1
Device Support
9.1.1
Development Support
9.2
接收文档更新通知
9.3
支持资源
9.4
Trademarks
9.5
静电放电警告
9.6
术语表
10
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
PHP|48
MPQF051B
散热焊盘机械数据 (封装 | 引脚)
订购信息
zhcspb0_oa
1
特性
符合面向汽车应用的 AEC-Q100 标准:
器件温度等级 1:-40°C 至 +125°C 环境工作温度范围
器件 HBM ESD 分类等级 2
器件 CDM ESD 分类等级 C4B
功能安全型
高压 (HV) 端口和低压 (LV) 端口的最高额定电压分别为 85V 和 80V
双向电流调节的典型精度为 1%
通道电流监测的典型精度为 1%
I
2
C 接口用于控制和诊断
内置 3.5V 1% 基准电压
集成 5V 10mA 辅助电源
5A 峰值半桥栅极驱动器
可编程或自适应死区时间控制
可选择与外部时钟同步的可编程振荡器,频率高达 1MHz
独立通道使能控制输入
集成电流和电压环路控制
可编程逐周期峰值电流限制
过热关断
HV 和 LV 端口过压保护
动态可选二极管仿真和强制 PWM 工作模式
可编程软启动计时器
支持多相和独立通道运行
支持紧急关断闩锁