TIDUF26
june 2023
BQ24072
,
LMR36520
,
TLV62568
,
TPS2116
1
Description
Resources
Features
Applications
6
1
System Description
1.1
Key System Specifications
2
System Overview
2.1
Block Diagram
2.2
Design Considerations
2.2.1
24 VAC to DC Rectification
2.2.2
eFuse Protection
2.2.3
5-V Rails
2.2.3.1
LMR36520 Voltage Rail
2.2.3.2
USB Power Input
2.2.4
Power Source ORing
2.2.5
Battery Management
2.2.6
3.3-V Power Rail
2.2.7
Power Rail Current Sensing
2.2.8
Backlight LED Driver
2.2.9
BoosterPack Overview
2.3
Highlighted Products
2.3.1
LMR36520
2.3.2
TPS2116
2.3.3
TLV62568
2.3.4
INA2180
2.3.5
TPS92360
2.3.6
TPS2640
2.3.7
BQ24072
3
Hardware, Software, Testing Requirements, and Test Results
3.1
Hardware Requirements
3.2
Test Setup
3.3
Test Results
3.3.1
24-VAC Start-Up and Shutdown
3.3.2
USB Start-Up and Shutdown
3.3.3
ORing
3.3.4
LMR36520
3.3.5
TLV62568 Transient Response
3.3.6
BM24072 Transient Response
3.3.7
TLV62568 (3V3 Power Rail)
3.3.8
LMR36520 (LMOut Power Rail)
3.3.9
BM24072 (BMOut Power Rail)
3.3.10
Reference
3.3.10.1
TLV62568
3.3.10.2
LMR36520
4
Design and Documentation Support
4.1
Design Files
4.1.1
Schematics
4.1.2
BOM
4.2
Tools and Software
4.3
Documentation Support
4.4
Support Resources
4.5
Trademarks
5
About the Author
4.3
Documentation Support
Texas Instruments,
LMR36520 SIMPLE SWITCHER® 4.2-V to 65-V, 2-A Synchronous Step-down Converter
data sheet
Texas Instruments,
TPS2116 1.6 V to 5.5 V, 2.5-A Low I
Q
Power Mux with Manual and Priority Switchover
data sheet
Texas Instruments,
TLV62568 1-A High Efficiency Synchronous Buck Converter in SOT Package
data sheet
Texas Instruments,
INAx180 Low- and High-Side Voltage Output, Current-Sense Amplifiers
data sheet
Texas Instruments,
TPS92360 38-V 1.2-A Single Channel LED Backlight Driver
data sheet
Texas Instruments,
TPS2640 42-V, 2-A eFuse with Integrated Reverse Input Polarity Protection
data sheet
Texas Instruments,
BQ2407x Standalone 1-Cell 1.5-A Linear Battery Chargers with Power Path
data sheet