ISL95813

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Single Phase Core Controller for VR12.6

OVERVIEW

The ISL95813 single-phase controller provides a fully compliant VR12.6 power supply solution for Intel™ microprocessors. It provides a tightly regulated output voltage that is programmed through a high speed serial bus interface with the CPU. This interface also allows the CPU to acquire real-time information from the voltage regulator (VR), which includes load current and VR temperature.

Based on Intersil's Robust Ripple Regulator R3™ Technology, the PWM modulator provides faster transient response and settling time when compared against traditional modulation schemes. Its variable frequency topology also allows for natural period stretching Discontinuous Conduction Mode (DCM) for increased efficiency and power savings in light load situations.

The ISL95813 has several other key features that include: DCR current sensing with single NTC thermal compensation; discrete resistor current sensing; differential remote voltage feedback; and user-programmable boot voltage, IMAX , TMAX , voltage transition slew rate and switching frequency.

KEY FEATURES

  • Full VR12.6 specification compliance
  • Wide input voltage range: 4.6V to 25V
  • R3™ control architecture delivers excellent transient response and power state mode transitions
  • Current monitor (IMON) with temperature compensation
  • VRHOT# indicator for CPU protection
  • Digitally selectable switching frequency:
  • 425kHz, 550kHz, 700kHz with ECO and PRO options
  • Enhanced light-load efficiency discontinuous conduction mode operation
  • Ultra small 20 Ld 3mmx4mm QFN package
  • Enable and power-good monitor

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL95813
Basic Information
Production Status
Mass Production
Input Voltage Min (V)
4.6
Input Voltage Max (V)
25
Output Voltage Min (V)
0.5
Output Voltage Max (V)
2.3
Output Current Max (A)
30
VBIAS (min)
4.75 V
VBIAS (max) (V)
5.25
IS (min)
.001 mA
IS (typ)
3.5 mA
Parametric Applications
Notebook,Tablets, UltrabooksT, and AIO
Qualification Level
Standard
VID
Yes
VRM
VR12.6
Bias Voltage Range (V)
4.75 to 5.25
Can Sample
YES
Temperature Range
-40 to +100

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