L6917B

Features: · 2 PHASE OPERATION WITHSYNCRHONOUS RECTIFIER CONTROL· ULTRA FAST LOAD TRANSIENT RESPONSE· INTEGRATED HIGH CURRENT GATE DRIVERS: UP TO 2A GATE CURRENT· TTL-COMPATIBLE 5 BIT PROGRAMMABLE OUTPUT COMPLIANT WITH VRM 9.0· 0.8% INTERNAL REFERENCE ACCURACY· 10% ACTIVE CURRENT SHARING ACCURACY· ...

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L6917B Picture
SeekIC No. : 004389316 Detail

L6917B: Features: · 2 PHASE OPERATION WITHSYNCRHONOUS RECTIFIER CONTROL· ULTRA FAST LOAD TRANSIENT RESPONSE· INTEGRATED HIGH CURRENT GATE DRIVERS: UP TO 2A GATE CURRENT· TTL-COMPATIBLE 5 BIT PROGRAMMABLE OU...

floor Price/Ceiling Price

Part Number:
L6917B
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/10/27

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Product Details

Description



Features:

· 2 PHASE OPERATION WITH
SYNCRHONOUS RECTIFIER CONTROL
· ULTRA FAST LOAD TRANSIENT RESPONSE
· INTEGRATED HIGH CURRENT GATE DRIVERS: UP TO 2A GATE CURRENT
· TTL-COMPATIBLE 5 BIT PROGRAMMABLE OUTPUT COMPLIANT WITH VRM 9.0
· 0.8% INTERNAL REFERENCE ACCURACY
· 10% ACTIVE CURRENT SHARING ACCURACY
· DIGITAL 2048 STEP SOFT-START
· OVERVOLTAGE PROTECTION
· OVERCURRENT PROTECTION REALIZED USING THE LOWER MOSFET'S RdsON OR A SENSE RESISTOR
· 300 kHz INTERNAL OSCILLATOR
· OSCILLATOR EXTERNALLY ADJUSTABLE UP TO 600kHz
· POWER GOOD OUTPUT AND INHIBIT FUNCTION
· REMOTE SENSE BUFFER
· PACKAGE: SO-28



Application

· POWER SUPPLY FOR SERVERS AND WORKSTATIONS
· POWER SUPPLY FOR HIGH CURRENT MICROPROCESSORS
· DISTRIBUTED DC-DC CONVERTERS



Pinout

  Connection Diagram


Specifications

Symbol Parameter Value Unit
Vcc, VCCDR to PGND 15 V
VBOOT-VPHASE Boot Voltage 15 V
VUGATE1-VPHASE1
VUGATE2-VPHASE2
  15 V
  LGATE1, PHASE1, LGATE2, PHASE2 to PGND -0.3 to Vcc+0.3 V
  All other pins to PGND -0.3 to 7 V
Vphase Sustainable Peak Voltage t < 20ns @ 600kHz 26 V



Description

L6917B is a power supply controller specifically designed to provide a high performance DC/DC conversion for high current microprocessors.

L6917B implements a dual-phase step-down controller with a 180° phase-shift between each phase. A precise 5-bit digital to analog converter (DAC) allows adjusting the output voltage from 1.100V to 1.850V with 25mV binary steps.

The high precision internal reference assures the selected output voltage to be within ±0.8%. The high peak current gate drive affords to have fast switching to the external power mos providing low switching losses.

L6917B assures a fast protection against load over current and load over/under voltage. An internal crowbar is provided turning on the low side mosfet if an over-voltage is detected. In case of over-current, the system works in Constant Current mode.




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