SLVSET0D
May 2020 – October 2021
TPS61378-Q1
PRODUCTION DATA
1
Features
2
Applications
3
Description
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 Diagram
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
Adjustable Peak Current Limit
8.3.8
Bootstrap
8.3.9
Load Disconnect
8.3.10
MODE/SYNC Configuration
8.3.11
Overvoltage Protection (OVP)
8.3.12
Output Short Protection/Hiccup
8.3.13
Power-Good Indicator
8.3.14
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
Setting the Current Limit
9.2.2.4
Selecting the Inductor
9.2.2.5
Selecting the Output Capacitors
9.2.2.6
Selecting the Input Capacitors
9.2.2.7
Loop Stability and Compensation
9.2.2.7.1
Small Signal Model
9.2.2.7.2
Loop Compensation Design Steps
9.2.2.7.3
Selecting the Bootstrap Capacitor
9.2.2.7.4
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
Third-Party Products Disclaimer
12.2
Receiving Notification of Documentation Updates
12.3
Support Resources
12.4
Trademarks
12.5
Glossary
12.6
Electrostatic Discharge Caution
13
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
RTE|16
MPQF149D
Thermal pad, mechanical data (Package|Pins)
RTE|16
QFND630A
Orderable Information
slvset0d_oa
slvset0d_pm
1
Features
AEC-Q100 qualified for automotive applications
Device temperature grade 1: –40°C to 125°C ambient operating temperature range
Function Safety-Capable
Documentation available to aid functional safety system design
Flexible input and output operation range
Input voltage range: 2.3 V to 14 V
Programmable output voltage range: 4.0 V to 18.5 V
Fixed output options: 5 V, 5.25 V, and 5.5 V
Programmable peak current limit: 1 A to 4.8 A
Avoid AM band interference and crosstalk
Dynamically programmable switching frequency: 200 kHz to 2.2 MHz
Spread spectrum frequency modulation
Optional clock synchronization
Minimize solution size for space constraint applications
Integrated LS/HS/ISO FET:
R
DS(ON)
50 mΩ/50 mΩ/100 mΩ
Support up to 2.2 MHz with small L-C
Minimized light load and idle state current consumption
25-µA quiescent current into VIN pin
0.5-µA shutdown current into VIN pin
Selectable auto PFM and forced PWM mode
True load disconnect during shutdown or fault conditions
Integrated protection features
Supports VIN close to VOUT operation
Input undervoltage lockout and output overvoltage protection
Hiccup output short circuit protection
Power good indicator
Thermal shutdown protection at 165°C
Higher than 90% efficiency under 0.8-A load from 3.3-V to 9-V conversion