Hi, I'm planning to use a couple of complementary power fets in a beanpole config for a power output stage. Power probably 5 watts or less, frequency around 500 KHz, the thing has to tolerate an unpredictable load which will be part capacitive, part resistive. I'm not too fussed about how efficient the power transfer is, and there'll be a series resistor on the output for protection, so that part's probably OK. Here's the potential issue: for simplicity I'm thinking of driving the two gates with 180 deg out of phase squarewaves (with the appropriate level shifts), so that one device is on, the other off, and the centre point of the beanpole toggles between the rails. Might phase shifts that result in both devices being on during the transitions cause problems? Is there a good way to handle this situation? TIA
- posted
14 years ago