5-Bit VID Single-Phase Voltage Regulator with Current Monitor for GPU Core Power

The ISL6263C IC is a Single-Phase Synchronous-Buck PWM voltage regulator for GPU core power application. It features Intersil’s Robust Ripple Regulator (R3) Technology™. Integrated current monitor, differential remote sense amplifier, MOSFET driver and bootstrap diode result in smaller implementation area and lower component cost.

Features

• Precise Single-Phase Core Voltage Regulator

- 0.5 System Accuracy 0°C to +100°C

- Differential Remote GPU Die Voltage Sense

• Real-Time GPU Current Monitor Output

• Applications up to 25A

• Input Voltage Range: +5.0V to +25.0V

• Programmable PWM Frequency: 200kHz to 500kHz

• Pre-Biased Output Start-Up Capability

• 5-Bit Voltage Identification Input (VID)

- 0.41200V to 1.28750V

- 25.75mV Steps

- Sequential or Non-Sequential VID Change On-the-Fly

• Configurable PWM Modes

- Forced Continuous Conduction Mode

- Automatic Entry and Exit of Diode Emulation Mode

- Selectable Audible Frequency PWM Filter

• Integrated MOSFET Drivers and Bootstrap Diode

• Choice of Current Sense Schemes

- Lossless Inductor DCR Current Sense

- Precise Resistive Current Sense

• Overvoltage, Undervoltage and Overcurrent Protection

• Pb-Free (RoHS Compliant)