APW7045

APW7045 Advanced PWM and Linear Power Controller Features General Description 2 Regulated Voltage are provided −Switching Power for Fixed Voltage (1.0V) −Linear Regulator for VMEM(2.5V) Simple Single-Loop Control Design −Voltage-Mode PWM Control Excellent Output Voltage Regulation −PWM Output: ±1% −Linear Output: ±3% Fast Transient Response −High-Bandwidth Error Amplifier −Full 0% to 100% Duty Ratio Power-Good Output Voltage Monitor Over-Voltage and Over-Current Fault Monitors Small Converter Size −200KHz Free-Running Oscillator ; Progammable from 50KHz to 800KHz −Reduce External Component Count The APW7045 integrates PWM controller and linear controller, as well as the monitoring and protection functions into a single package, which provides two controlled power outputs with over-voltage and overcurrent protections. The PWM controller regulates the DDR termination voltage (1.25V) or GPU Voltage (2.05V) with a synchronous-rectified buck converter. The linear controller regulates the Memory Voltage (2.5V). The pre cision reference and voltage-mode PWM control provide ±1% static regulation. The linear controller drives an external N-channel MOSFET to provide adjustable voltage. The APW7045 monitors two output voltages, and a single Power Good signal is issued when the PWM voltage is within ±10% of the DAC setting and the lineat regulator output level is above under-voltage threshold. Additional built-in over-voltage protection for the PWM output uses the lowe...