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LM5025C
www.ti.com SNVS568C – SEPTEMBER 2008 – REVISED MARCH 2013 LM5025C Active Clamp Voltage Mode PWM Controller
Check for Samples: LM5025C FEATURES DESCRIPTION The LM5025C is a functional variant of the LM5025
active clamp PWM controller. The functional
differences of the LM5025C are: The maximum duty
cycle of the LM5025C is increased from 80% to 91%.
The soft-start capacitor charging current is increased
from 20 ВµA to 90 ВµA. The VCC regulator current limit
threshold is increased from 25 mA to 55 mA. The
CS1 and CS2 current limit thresholds have been
increased to 0.5V. The internal CS2 filter discharge
device has been disabled and no longer operates
each clock cycle. The internal VCC and VREF
regulators continue to operate when the line UVLO
pin is below threshold. 1 2 Internal Start-Up Bias Regulator
3A Compound Main Gate Driver
Programmable Line Under-Voltage Lockout
(UVLO) with Adjustable Hysteresis
Voltage Mode Control with Feed-Forward
Adjustable Dual Mode Over-Current Protection
Programmable Overlap or Deadtime between
the Main and Active Clamp Outputs
Volt x Second Clamp …
