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EL7571 - Programmable PWM Controller

Description

CONDITION VIN VUVLO HI Input Voltage Range Input Under Voltage Lock out Upper Limit Positive going input voltage VUVLO LO Input Under Voltage Lock out Lower Limit Negative going input voltage VOUT RANGE VOUT 1 Output Voltage Range See VID table Steady State Output Voltage Accuracy, IL = 6

Features

  • Pentium® II Compatible.
  • 5 bit DAC Controlled Output Voltage.
  • Greater than 90% Efficiency.
  • 4.5V to 12.6V Input Range.
  • Dual NMOS Power FET Drivers.
  • Fixed frequency, Current Mode Control.
  • Adjustable Oscillator with External Sync. Capability.
  • Synchronous Switching.
  • Internal Soft-Start.
  • User Adjustable Slope Compensation Pinout.
  • Pulse by Pulse Current Limiting ENABLE 1 OTEN C3 240pF 2 CSLOPE C3.

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Datasheet preview – EL7571

Datasheet Details

Part number EL7571
Manufacturer Renesas Electronics
File Size 0.97 MB
Description Programmable PWM Controller
Datasheet download datasheet EL7571 Datasheet
Additional preview pages of the EL7571 datasheet.

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Full PDF Text Transcription

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DATASHEET EL7571 Programmable PWM Controller FN7298 Rev 1.00 October 25, 2004 The EL7571 is a flexible, high efficiency, current mode, PWM step down controller. It incorporates five bit DAC adjustable output voltage control which conforms to the Intel Voltage Regulation Module (VRM) Specification for Pentium® II and Pentium® Pro class processors. The controller employs synchronous rectification to deliver efficiencies greater than 90% over a wide range of supply voltages and load conditions. The on-board oscillator frequency is externally adjustable, or may be slaved to a system clock, allowing optimization of RFI performance in critical applications. In single supply operation, the high side FET driver supports boot-strapped operation.
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