HIP6012

DATASHEET HIP6012 Buck and Synchronous-Rectifier Pulse-Width Modulator (PWM) Controller FN4324 Rev.2.00 December 27, 2004 The HIP6012 provides complete control and protection for a DC-DC converter optimized for high-performance microprocessor applications. It is designed to drive two N-Channel MOSFETs in a synchronous-rectified buck topology. The HIP6012 integrates all of the control, output adjustment, monitoring and protection functions into a single package. The output voltage of the converter can be precisely regulated to as low as 1.27V, with a maximum tolerance of 1.5% over temperature and line voltage variations. The HIP6012 provides simple, single feedback loop, voltagemode control with fast transient response. It includes a 200kHz free-running triangle-wave oscillator that is adjustable from below 50kHz to over 1MHz. The error amplifier features a 15MHz gain-bandwidth product and 6V/s slew rate which enables high converter bandwidth for fast transient performance. The resulting PWM duty ratio ranges from 0% to 100%. The HIP6012 protects against overcurrent conditions by inhibiting PWM operation. The HIP6012 monitors the current by using the rDS(ON) of the upper MOSFET which eliminates the need for a current sensing resistor. Pinout HIP6012 (SOIC, TSSOP) TOP VIEW RT 1 OCSET 2 SS 3 COMP 4 FB 5 EN 6 GND 7 14 VCC 13 PVCC 12 LGATE 11 PGND 10 BOOT 9 UGATE 8 PHASE Features Drives Two N-Channel MOSFETs Operates From +5V or +12V Input Simple Single-Loop Contro...