ZHCS155C
March 2011 – November 2023
TPS40170
PRODUCTION DATA
1
1
特性
2
应用
3
说明
4
Pin Configuration and Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
Handling Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Electrical Characteristics
5.6
Typical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
LDO Linear Regulators and Enable
6.3.2
Input Undervoltage Lockout (UVLO)
6.3.2.1
Equations for Programming the Input UVLO:
6.3.3
Oscillator and Voltage Feed-Forward
6.3.3.1
Calculating the Timing Resistance (RRT)
6.3.4
Overcurrent Protection and Short-Circuit Protection (OCP and SCP)
6.3.5
Soft-Start and Fault-Logic
6.3.5.1
Soft Start During Overcurrent Fault
6.3.5.2
Equations for Soft Start and Restart Time
6.3.6
Overtemperature Fault
6.3.7
Tracking
6.3.8
Adaptive Drivers
6.3.9
Start-Up into Pre-Biased Output
6.3.10
Power Good (PGOOD)
6.3.11
PGND and AGND
6.4
Device Functional Modes
6.4.1
Frequency Synchronization
6.4.2
Operation Near Minimum VIN (VVIN ≤ 4.5 V)
7
Application and Implementation
7.1
Application Information
7.1.1
Bootstrap Resistor
7.1.2
SW Node Snubber Capacitor
7.1.3
Input Resistor
7.1.4
LDRV Gate Capacitor
7.2
Typical Application
7.2.1
Design Requirements
7.2.2
Detailed Design Procedure
7.2.2.1
Custom Design with WEBENCH® Tools
7.2.2.2
List of Materials
7.2.2.3
Select a Switching Frequency
7.2.2.4
Inductor Selection (L1)
7.2.2.5
Output Capacitor Selection (C9)
7.2.2.6
Peak Current Rating of Inductor
7.2.2.7
Input Capacitor Selection (C1, C6)
7.2.2.8
MOSFET Switch Selection (Q1, Q2)
7.2.2.9
Timing Resistor (R7)
7.2.2.10
UVLO Programming Resistors (R2, R6)
7.2.2.11
Boot-Strap Capacitor (C7)
7.2.2.12
VIN Bypass Capacitor (C18)
7.2.2.13
VBP Bypass Capacitor (C19)
7.2.2.14
VDD Bypass Capacitor (C16)
7.2.2.15
SS Timing Capacitor (C15)
7.2.2.16
ILIM Resistor (R9, C17)
7.2.2.17
SCP Multiplier Selection (R5)
7.2.2.18
Feedback Divider (R10, R11)
7.2.2.19
Compensation: (R4, R13, C13, C14, C21)
7.2.3
Application Curves
7.3
Power Supply Recommendations
7.4
Layout
7.4.1
Layout Guidelines
7.4.2
Layout Example
8
Device and Documentation Support
8.1
Device Support
8.1.1
第三方米6体育平台手机版_好二三四免责声明
8.1.2
Development Support
8.1.2.1
Custom Design with WEBENCH® Tools
8.1.3
Related Devices
8.2
Documentation Support
8.2.1
Related Documentation
8.3
接收文档更新通知
8.4
支持资源
8.5
Trademarks
8.6
静电放电警告
8.7
术语表
9
Revision History
10
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
RGY|20
MPQF116H
散热焊盘机械数据 (封装 | 引脚)
RGY|20
QFND041R
订购信息
zhcs155c_oa
zhcs155c_pm
1
特性
可提供新款类似米6体育平台手机版_好二三四:
LM5145
宽输入电压和占空比范围 75V 同步降压控制器
LM5146
宽占空比范围 100V 同步直流/直流降压控制器
宽输入电压范围:4.5V 至 60V
600mV 基准电压,精度为 1%
可编程 UVLO 与迟滞功能
具有电压前馈的电压模式控制
可编程频率范围:100kHz 至 600kHz
可通过主要或辅助选项实现双向频率同步
提供基于低侧 FET 检测的过流保护与基于高侧 FET 检测的短路保护,具有集成式热补偿功能
可编程闭环软启动
支持预偏置输出
165°C 热关断,具有迟滞功能
电压跟踪
电源正常状态指示
ENABLE 支持 1µA 低电流关断
提供 8.0V 和 3.3V LDO 输出
集成自举二极管
20 引脚 3.5mm × 4.5mm VQFN (RGY) 封装
使用
WEBENCH®
工具创建定制设计
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