5-Bit VID Single-PhaseVoltage Regulator for IMVP-6+ Santa Rosa GPU Core
●The ISL6263 IC is a Single-Phase Synchronous-Buck PWM voltage regulator featuring Intersil’s Robust Ripple Regulator (R3) Technology™. The ISL6263 is an implementation of the Intel®
●Mobile Voltage Positioning (IMVP) protocol for GPU Render Engine core power. Integrated MOSFET drivers, bootstrap diode, and droop amplifier result in lower component cost and smaller implementation area.
●Intersil’s R3 Technology™ combines the best features of both fixed-frequency PWM and hysteretic PWM, delivering excellent light-load efficiency and superior load transient response by commanding variable switching frequency during the transitory event.
●Features
●• Precision single-phase core voltage regulator
●\- 0.5% system accuracy 0°C to +100°C
●\- Differential remote GPU die voltage sensing
●\- Differential droop voltage sensing
●• 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)
●\- 1.28750 to 0.41200V
●\- 25.75mV steps
●\- Sequential or non-sequential VID change on-the-fly
●• Selectable diode emulation mode
●\- Render Suspend mode only
●\- Render Performance and Render Suspend mode
●• Selectable audio filter in render suspend mode
●• Integrated MOSFET drivers and bootstrap diode
●• Choice of current sensing schemes
●\- Lossless inductor DCR current sensing
●\- Precision resistive current sensing
●• Overvoltage, undervoltage, and overcurrent protection
●• Pb-free plus anneal available (RoHS compliant)
