Data Sheet No. PD 94716
IR3094PBF
3 PHASE PWM CONTROLLER FOR POINT OF LOAD
DESCRIPTION
The IR3094 Control IC provides a full featured, cost effective, single chip solution to offers a compact,
efficient solution for high current POL converters. Control and 3 Phase Gate Drive functions are integrated
into a single space-saving IC.
FEATURES
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0.85V Reference Voltage
3A GATELX Pull Down Drive Capability
Programmable 100KHz to 540KHz oscillator
Programmable Voltage Positioning (can be disabled)
Programmable Softstart
Programmable Hiccup Over-Current Protection with Delay to prevent false triggering
Simplified Powergood provides indication of proper operation and avoids false triggering
Operates up to 16V converter input with 7.5V Under-Voltage Lockout
4.36V Under-Voltage Lockout threshold for gate driver voltage
Adjustable Voltage, 150mA Bias Regulator provides MOSFET Drive Voltage
Enable Input
OVP Flag Output detects high side fet short at powerup
Separate OVP sense line to sense the output voltage and latched OVP with protection
Inductor DCR sensing for current sensing will support up to 5.1V output applications
Available 48L MLPQ package
ORDERING INFORMATION
Device
Order Quantity
IR3094MTRPBF
3000 per Reel
IR3094MPBF
100 piece strips
PACKAGE INFORMATION
NC
NC
ROSC
VOSNS-
OCSET
VREF
VDRP
FB
EAOUT
SS/DEL
SCOMP2
SCOMP3
NC
NC
NC
NC
5VREF
OVPSNS
ENABLE
OVP
CSINP1
CSINM1
NC
VCCH1
IR3094
48LD MLPQ
GATEH1
PGND1
GATEL1
VCCL1_2
5VUVL
GATEL2
PGND2
GATEH2
VCCH2
VCCH3
GATEH3
PGND3
48L MLPQ
(7 x 7 mm Body)
o
JA
= 27 C/W
Page 1 of 29
LGND
SETBIAS
VCC
CSINP3
CSINM3
BIASOUT
PWRGD
CSINP2
CSINM2
NC
VCCL3
GATEL3
09/26/05