ZHCSNP9B
March 2021 – October 2021
TPS61379-Q1
PRODUCTION DATA
1
特性
2
应用
3
说明
4
Revision History
5
Device Comparison Table
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
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagrams
8.3
Feature Description
8.3.1
VCC Power Supply
8.3.2
Input Undervoltage Lockout (UVLO)
8.3.3
Enable and Soft Start
8.3.4
Shut Down
8.3.5
Switching Frequency Setting
8.3.6
Spread Spectrum Frequency Modulation
8.3.7
Bootstrap
8.3.8
Load Disconnect
8.3.9
MODE/SYNC Configuration
8.3.10
Overvoltage Protection (OVP)
8.3.11
Output Short Protection/Hiccup
8.3.12
Power-Good Indicator
8.3.13
Thermal Shutdown
8.4
Device Functional Modes
8.4.1
Forced PWM Mode
8.4.2
Auto PFM Mode
8.4.3
External Clock Synchronization
8.4.4
Down Mode
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Programming the Output Voltage
9.2.2.2
Setting the Switching Frequency
9.2.2.3
Selecting the Inductor
9.2.2.4
Selecting the Output Capacitors
9.2.2.5
Selecting the Input Capacitors
9.2.2.6
Loop Stability and Compensation
9.2.2.6.1
Small Signal Model
9.2.2.6.2
Loop Compensation Design Steps
9.2.2.6.3
Selecting the Bootstrap Capacitor
9.2.2.6.4
VCC Capacitor
9.2.3
Application Curves
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Device Support
12.1.1
第三方产品免责声明
12.2
接收文档更新通知
12.3
支持资源
12.4
Trademarks
12.5
术语表
12.6
静电放电警告
13
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
RTE|16
MPQF149D
散热焊盘机械数据 (封装 | 引脚)
RTE|16
QFND630A
订购信息
zhcsnp9b_oa
zhcsnp9b_pm
7.6
Typical Characteristics
V
IN
= 3.3 V, V
OUT
= 9 V (VO pin), T
A
= 25°C, Fsw = 2.2 MHz, unless otherwise noted.
VOUT = 9 V
Auto PFM
Fsw = 2.2 MHz
Figure 7-1
9 V
OUT
Efficiency vs Output Current
VOUT = 9 V
Auto PFM
Fsw = 2.2 MHz
Figure 7-3
9 V
OUT
Regulation vs Output Current
Figure 7-5
Shutdown Current vs Input Voltage
Figure 7-7
Reference Voltage vs Temperature
Figure 7-9
V
IN
UVLO Threshold Voltage vs Temperature
Figure 7-11
PG Delay Time vs Temperature
VOUT = 9 V
FPWM
Fsw = 2.2 MHz
Figure 7-2
9 V
OUT
Efficiency vs Output Current
Figure 7-4
Quiescent Current into V
IN
vs Input Voltage
Figure 7-6
Fixed Output Voltage vs Temperature
Figure 7-8
Switching Frequency vs Setting Resistance
Figure 7-10
EN Threshold Voltage vs Temperature
Figure 7-12
R
DSON
vs Temperature