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- PMP11373 Test Results
(PDF 1831 KB)
30 Mar 2016 67 views
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.
- Isolated (3KV) outputs without opto-coupler feedback
- One DRV8801 motor drive controller can drive two transformers
- Low cost solution
- Low noise outputs