Load Switches for Power MUXing & Reverse Current Blocking Reference Design
Description
In systems that can be powered from multiple power sources: achieving a seamless transition when switching between sources can be challenging: especially when it is also neccesary to block reverse current flow. This reference design demonstrates how two load switches can be used to MUX power between two supplies and block reverse current.
Features
- TPS22959 - 2:1 power multiplexer (MUX):5.5 V: 15 A: 4.4 mΩ (typical at VBIAS = 5 V)Optimized RC circuit ensures make-before-break logicControl via single GPIO to select supplyTPS22959 - reverse current blocking:5.5 V: 15 A: 8.8 mΩ (typical at VBIAS = 5 V)Back-to-back switches block reverse current when disabledAdjustable rise time
Applications
- Oscilloscopes & digitizers
- Digital multimeter (DMM)
- Tablet (multimedia)
- Spectrometer
- Aircraft cockpit display
- Flight control unit
- Interconnect/distribution box
- Full authority digital engine control (FADEC)
- Lab & field Instrumentation
- Automotive test
- Data acquisition (DAQ)
- Global positioning system receiver
- Solar charge controller
- Radar
- Signal generator
- Source measurement unit (SMU)
- Parametric measurement unit (PMU)
- Battery cell formation & test equipment
- Circuit breaker (ACB
- MCCB
- VCB)
- E-reader
- Smartphone
- Weigh scale
Product Categories
- Power management
| Part Number | Name | Companion Part |
|---|
| Download the bill of materials for TIDA-00514 | Download |
Test Data
Get results faster with test and simulation data that's been verified.
Download the test file for TIDA-00514| Title | Updated | Type | Size (KB) | |
|---|---|---|---|---|
| TIDA-00514 Gerber | 30 Jun 2015 | ZIP | 453 | |
| TIDA-00514 Altium | 30 Jun 2015 | ZIP | 566 | |
| TIDA-00514 PCB | 30 Jun 2015 | 987 | ||
| TIDA-00514 Assembly Drawing | 30 Jun 2015 | 197 | ||
| TIDA-00514 BOM | 30 Jun 2015 | 74 | ||
| TIDA-00514 Schematic | 30 Jun 2015 | 160 |