TI E2E Community
AC/DC and Isolated DC/DC Power
AC/DC and Isolated DC/DC Power Forum
Which PWM controller (external switch) to drop 200-450 VDC to 375 VDC ?
I hope someone can suggest the proper IC / family for the following:
Available DC power ramps up from 0 to 450 VDC at up to 15 AMPS and back down to 0 (SOLAR PANEL ARRAY).
Intended intermediate load operates from 200 to 400 VDC and may only need 5 or less amps. Over 400 VDC and poof !
PWM needs to turn on switch (not try to boost or buck) and just pass current <375 VDC. Droop is ok
PWM needs to buck as voltage exceeds 375 VDC.
I considered a simple series pass emiiter / source follower but would rather not burn off 75 volts if a
SMPS can run cooler. Someone suggested the UC2842 or UC.2843.
External switch can be Nfet, Pfet, or IGBT. Can supply isolated floating gate drive if needed..
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