The APW6021 is a high-performance, graphics intensive microprocessor and computer application power control IC from ON Semiconductor. The IC integrates voltage-mode PWM controller and three linear controllers, as well as the monitoring and protection functions into a 28-pin SOIC package. The PWM controller regulates the micro-processor core voltage with a synchronous-rectified buck converter. The linear controllers regulate the computer system’s AGP 1.5V or 3.3V bus power, the 1.5V GTL bus power, and the 1.8V power for the North/South Bridge core voltage and/or cache memory circuits. The APW6021 includes an Intel-compatible, TTL 5-input digital-to-analog converter (DAC) that adjusts the core PWM output voltage from 1.3 VDC to 2.05 VDC in 0.05V steps and from 2.1 VDC to 3.5 VDC in 0.1V increments. The precision reference and voltage-mode control provide ±1% static regulation. The AGP bus power linear controller’s output (VOUT2 ) is user-selectable, through a TTL-com- patible signal applied at the SELECT pin, for levels 1.5V or 3.3V.
The APW6021 is an advanced PWM and triple linear power controller designed for high‑performance, graphics‑intensive microprocessor and computer applications. It integrates a voltage‑mode PWM controller, three linear regulators, and monitoring/protection functions in a 28‑pin SOIC package.
The handbook covers functional applications, pin descriptions, electrical and thermal characteristics, reliability test procedures, and packaging dimensions, offering engineers the information needed to implement and troubleshoot the device.
| Supply Voltage (VCC) | 15 V |
|---|---|
| Free‑Running Oscillator Frequency | 200 kHz nominal, programmable 50 kHz to >1 MHz |
| Linear Regulator Output Regulation | ±3 % |
The device operates with a supply voltage of 15 V.