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
9.2.3
Application Curves
Figure 9-3
Switching Waveform V
IN
= 5 V,
V
OUT
= 9 V, I
OUT
= 800 mA, FPWM
Figure 9-5
Load Transient V
IN
= 5 V, V
OUT
= 9 V, I
OUT
= 300 mA to 800 mA, FPWM
Figure 9-7
Shutdown from EN Waveforms
V
IN
= 5 V, V
OUT
= 9 V, I
OUT
= 500 mA, FPWM
Figure 9-9
Short Circuit Recovery V
IN
= 5 V,
V
OUT
= 9 V, I
OUT
= 0 mA, FPWM
Figure 9-4
Switching Waveform V
IN
= 5 V,
V
OUT
= 9 V, I
OUT
= 0 mA, Auto PFM
Figure 9-6
Start-up from EN Waveform V
IN
= 5 V, V
OUT
= 9 V, I
OUT
= 500 mA, FPWM
Figure 9-8
Short Circuit Protection V
IN
= 5 V,
V
OUT
= 9 V, FPWM
Figure 9-10
Hiccup Short Circuit Protection
V
IN
= 5 V, V
OUT
= 9 V, FPWM