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LTC6090 HV Half bridge design

Category: Hardware
Product Number: LTC6090

Hello,

I've designed a half-bridge ''high-voltage''... kind of work, but:

1. Fairly stable but limited BW, I need 1Mhz -3db, I get about 300KHz ?

2. The op-amp has severe latch-up problems ! is it known the LTC6090 latch-up ?

3. With a supply -12V/+110V, what is the max. voltage input of the LTC6090 (common / differential) ?

4. With the frequency increase, from about 50KHz, the output offset varies a lot, not sure what will be the cause (practical or theoretical) ?

Thank you for comments and suggestions. 

Thank you

PS: 1M/2.2pF scope probes

LTC6090_011.asc

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