DATASHEET
ISL6267
Multiphase PWM Regulator for AMD Fusion™ Mobile CPUs
FN7801 Rev 1.00 Jan 8, 2013
The ISL6267 is des...
DATASHEET
ISL6267
Multiphase PWM
Regulator for AMD Fusion™ Mobile CPUs
FN7801 Rev 1.00 Jan 8, 2013
The ISL6267 is designed to be completely compliant with AMD Fusion™ specifications. The ISL6267 controls two Voltage
Regulators (VRs), with three integrated gate drivers. The first VR can be configured as 3-, 2-, or 1-phase VR, while the second output can be configured as 2- or 1-phase VR, providing maximum flexibility. The two VRs share the serial control bus to communicate with the CPU and achieve lower cost and smaller board area compared with two-chip solutions.
The PWM modulator of the ISL6267 is based on Intersil’s R3 (Robust Ripple
Regulator) Technology™. Compared with the traditional multi-phase buck
regulator, the R3 modulator commands variable switching frequency during load transients, achieving faster transient response. With the same modulator, it naturally goes into pulse frequency modulation in light load conditions, which achieves higher light load efficiency an...