APW7159A

APW7159A Dual Channel Synchronous Buck PWM Controller for SMPS Features General Description Single 12V Power Supply Required Excellent Output Voltage Regulation - 1.0V±0.8% Internal Reference Over Line and Temperature Simple Single Loop Control Design - Voltage Mode PWM Control 0~100% Duty Ratio Programmable Frequency Range from 50kHz to 400kHz (Constant 50kHz when Floating) Integrated Soft-Start and Soft-Off (Patent Pending) Support Pre-Biased Power-On Both Channel with 180o Phase Shift Integrated Boot-Strap Diode Over-Current Protection - Sense High Side MOSFET’s R DS(ON) 120% Over-Voltage Protection 50% Under-Voltage Protection Over-Temperature Protection Available in SOP-20 Package Lead Free and Green Devices Available (RoHS Compliant) Applications SMPS Simplified Application Circuit The APW7159A is a dual channel voltage mode and synchronous PWM controller which drives dual N-channel MOSFETs. The two channels are operated with 180 degree phase shift. The device integrates all of the control, monitoring, and protecting functions into a single package; provides two controlled power output with over-voltage, overtemperature, and over-current protections. The APW7159A provides excellent regulation for output load variation. The internal 1.0V temperature-compensated reference voltage provides high accuracy of 0.8% over line and temperature. The device includes a 50kHz free-running triangle-wave oscillator that is adjustable from 50kHz to 4...