Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
The HIP6301 multi-phase PWM control IC together with its companion gate drivers, the HIP6601B, HIP6602B, HIP6603B or HIP6604B and external MOSFETs provides a precision voltage regulation system for advanced microprocessors. Multiphase power conversion is a marked departure from earlier single phase converter configurations previously employed to satisfy the ever increasing current demands of modern microprocessors. Multi-phase convertors, by distributing the power and load current results in smaller and lower cost transistors with fewer input and output capacitors. These reductions accrue from the higher effective conversion frequency with higher frequency ripple current due to the phase interleaving process of this topology. For example, a three phase convertor operating at 350kHz will have a ripple frequency of 1.05MHz. Moreover,
greater convertor bandwidth of this design results in faster response to load transients.
Features
• Multi-Phase Power Conversion
• Precision Channel Current Sharing
- Loss Less Current Sampling - Uses rDS(ON)
• Precision CORE Voltage Regulation
- ±1% System Accuracy Over Temperature
• Microprocessor Voltage Identification Input
- 5-Bit VID Input
- 1.100V to 1.850V in 25mV Steps
- Programmable “Droop” Voltage
• Fast Transient Recovery Time
• Over Current Protection
• Automatic Selection of 2, 3, or 4 Phase Operation
• High Ripple Frequency, (Channel Frequency) Times
