ISL95833

Request Full Datasheet

Dual 2+1 PWM Controller for IMVP-7/VR12 CPUs

Product Status: 量産中

OVERVIEW

The ISL95833 Pulse Width Modulation (PWM) controller IC provides a complete solution for IMVP-7/VR12™ compliant microprocessor and graphic processor core power supplies. It provides the control and protection for two Voltage Regulators (VRs). The first VR, typically for VCORE , incorporates 1 integrated driver and can operate in 2- or 1-phase configurations. The second VR, typically for Graphics, is a single phase regulator incorporating an integrated driver. The two VRs share a serial control bus to communicate with the CPU and achieve lower cost and smaller board area compared with the two-chip approach.

Both VRs utilize Intersil's Robust Ripple Regulator R3 Technology™. The R3 modulator has numerous advantages compared to traditional modulators, including faster transient response, variable switching frequency during load transients, and improved light load efficiency due to its ability to automatically change switching frequency.

The ISL95833 has several other key features. Both outputs support either DCR current sensing with a single NTC thermistor for DCR temperature compensation, or more precise resistor current sensing if desired. Both outputs come with remote voltage sense, programmable VBOOT voltage, IMAX, and switching frequency, adjustable overcurrent protection and separate Power-Good signals.

KEY FEATURES

  • Serial Data Bus
  • Dual Outputs:
  • Configurable 2- or 1-phase for the 1st Output using one Integrated Gate Driver
  • 1-phase for the 2nd Output using an Integrated Gate Driver
  • R3 Modulator
  • Excellent Transient Response
  • High Light Load Efficiency
  • 0.5% System Accuracy Over-Temperature
  • Supports Multiple Current Sensing Methods
  • Lossless Inductor DCR Current Sensing
  • Precision Resistor Current Sensing
  • Differential Remote Voltage Sensing
  • Programmable VBOOT Voltage at Start-up
  • Resistor Programmable IMAX, Switching Frequency for Both Outputs
  • Adaptive Body Diode Conduction Time Reduction

PARAMETRICS

Parameters
ISL95833
Basic Information
Production Status
量産中
出力最大数
2
位相最大数
2
入力電圧 (V) (min)
4.75
入力電圧 (V) (max)
5.25
出力電圧 (V) (min)
0.25
出力電圧 (V) (max)
1.52
出力電流 (A) (max)
60
バイアス電圧範囲 (V)
4.75 to 5.25
VID
Yes
パラメトリックアプリケーション
VR12/IMVP7
認定レベル
Standard
ドループ
Yes
集積MOSFETドライバ
Yes
CANサンプル
YES
温度範囲
-40 to +100

下記をご確認ください