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Old 8th December 2008, 04:58 PM   #1
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Question UC3846 or UC3856 design

Somebody have a schematic of a power supply using UC3846 or UC3856 with half-bridge topology? I want to make a SMPS with 32V / 25Ah with it.

Thnks
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Old 8th December 2008, 10:13 PM   #2
mflorin is offline mflorin  Romania
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Location: IASI
Just a though...

Half bridge current mode control is usually avoided due to the 'equivalent' series capacitor seen in series with transformer primary winding. This tends to make your system unstable.
If half bridge is the topology you want to go, then you better consider a voltage mode control.
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Old 9th December 2008, 12:06 AM   #3
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Thanks mflorin. Whats topology that you indicate to a 32V/25A SMPS ? And for Voltage mode, whats PWM IC you indicate ?
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Old 12th December 2008, 08:15 PM   #4
mflorin is offline mflorin  Romania
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you have to give more design data for your 800W SMPS...
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Old 18th December 2008, 03:30 AM   #5
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Hello Brazilian Brother, take a look at this thread: Offline full-bridge SMPS....need help

U may find a lot of stuff and references for your SMPS.
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