Dual isolated half-bridge converters are implemented using a single DRV8801 motor driver controller. The DRV8801 controller operates from a 24Vdc input and at a fixed 50% duty, generated using the low cost LMC555 timer. Transformer secondaries are rectified and regulated to 5V and 15V outputs using TPS7A4901 linear regulators, which supply 0.15A each. This method allows the opto-coupler to be eliminated, reducing cost and complexity. Design options allow single or dual outputs per transformer.
| Output voltage options | PMP11373.1 | PMP11373.2 |
|---|---|---|
| Vin (Min) (V) | 21.6 | 21.6 |
| Vin (Max) (V) | 26.4 | 26.4 |
| Vout (Nom) (V) | 15 | 5 |
| Iout (Max) (A) | .15 | .15 |
| Output Power (W) | 2.25 | .75 |
| Isolated/Non-Isolated | Non-Isolated | Non-Isolated |
| Input Type | DC | DC |
| Topology | Half Bridge | Half Bridge |
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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Test results for the reference design, including efficiency graphs, test prerequisites and more
Detailed schematic diagram for design layout and components
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Design file that contains information on physical board layer of design PCB
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Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Test report | PMP11373 Test Results | Mar. 30, 2016 |
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