APW7025 Datasheet | Anpec Electronics Coropration

Advanced PWM and Dual Linear Power Control Features - 3 Regulated Voltage are provided - Switching Power for VTT(1.25V) - Linear1 Regulator for FBVDDQ(2.5V) .. General Description The APW7025 integrates a PWM controller and Dual linear controller, as well as the monitoring and protection functions into a single package , which provides three controlled power outputs with over-voltage and over-current protections. The PWM controller regulates the DDR reference voltage with a synchronous-rectified buck converter. The linear controller regulates power for microprocessor core voltage and Memory Voltage. The precision reference and voltage-mode PWM control provide ±2% static regulation. The linear controller drives an external N-channel MOSFET to provide adjustable voltage. The APW7025 monitors all the output voltages , and a single Power Good signal is issued when the PWM Voltage is within 10% of the 1.25V setting and the other output levels are above their under-voltage thresholds. Additional built-in over-voltage protection for the PWM output uses the lower MOSFET to prevent output voltages above 115% of the 1.25V setting. The PWM over-current function monitors the output current by using the voltage drop across the upper MOSFET’s RDS(ON) , eliminating the need for a current sensing resistor. - Linear2 Regulator for NVVDD(2.05V) 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 - Constant Frequency Operation(200k Hz) - Programmable Oscillator from 50k Hz to 1MHz - Reduce External ponent Count Pin Description Applications VCC 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 UGATE PHASE LGATE PGND OCSET VSEN1 FB P VSEN3 DRIVE3 GND VAUX - -...