We explored the ICs UCC28251, LM5045 found out the following about those:
- UCC28251
- supports full-bridge topology
- does it internally implement phase-shifted full-bridge?
- soft-switching?
- could not understand how to externally adjust set-point??
2. LM5045:
- supports half-bridge and full-bridge topology
- does not support phase-shift full-bridge?
- externally adjustable set-point??
We have some specific requirements, that we are looking for in the PWM Controller:
- A.C. Supply range: 170V to 300V.
- Output characteristics: maximum of 65V d.c. and 12A d.c..
- Topology supported: Phase-Shifted Full-Bridge or Asymmetric Half-Bridge or both (preferred)-> Soft-switching topologies.
- A query regarding the product that you'll suggest: Does the PWM Controller itself introduce Phase-shift (in Phase-Shifted Full-Bridge) or Asymmetry (in Asymmetric Half-Bridge), or does the micro-controller have to suggest these (while all that the PWM controller does on its own is generate PWM pulses)?
- Error Loop for PWM generation: Since we're controlling the lead-acid battery charging profile using a micro-controller, we'd want the PWM Controller to be provided its Reference voltage (set-point) by the micro-controller (generated from PWM pin of micro-controller, converted to equivalent D.C. level using an RC-network and fed to the Error amplifier input of PWM controller).
- PWM pulse level: 5V (preferred), 12V
- LLC: May or may not be internally present in the PWM Controller. You may suggest us both types of ICs, if available.
- Primary/ Secondary side usage: We'd prefer the latter
- please suggest the appropriate PWM controller to meet our requirements