Gandalf_Sr
Member level 1
My requirement is to step up from 5 to 9 V to ± 100 to 150 V with a PIC controlling the voltages. I can do the PIC bit but I'm unsure on which SMPS topologies would be best.
The ±100 to 150 V supplies will be required to deliver up to 300 mA pulses into a load that will be in the range of 500 - 1000 ohms so instantaneous power is 90W but the duty factor (on / off times) is 0.015 (it's on for a max of 300 uS in any 20 mS) so the average power (not counting losses) is under 2 W.
The output also needs to be current controlled / limited if that affects the SMPS design?
I've considered the following:
- SEPIC
- Flyback
- Boost
Efficiency is a big factor because this is going to run off batteries.
Thanks in advance for any helpful suggestions
The ±100 to 150 V supplies will be required to deliver up to 300 mA pulses into a load that will be in the range of 500 - 1000 ohms so instantaneous power is 90W but the duty factor (on / off times) is 0.015 (it's on for a max of 300 uS in any 20 mS) so the average power (not counting losses) is under 2 W.
The output also needs to be current controlled / limited if that affects the SMPS design?
I've considered the following:
- SEPIC
- Flyback
- Boost
Efficiency is a big factor because this is going to run off batteries.
Thanks in advance for any helpful suggestions