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IR3092MTR
2 PHASE OPTERON, ATHLON, OR VR10.X CONTROL IC
International
TWR Rectifier IR3092
DATA SHEET
2 PHASE OPTERON, ATHLON, OR VR10.X CONTROL IC
DESCRIPTION
The IR3092 Control IC provides a full featured, single chip solution to implement robust power conversion
solutions for three different microprocessor families; 1) AMD Opteron, 2) AMD Athlon or 3) Intel VR10.X
family of processors. The user can select the appropriate VID range with a single pin. PWM Control and 2
phase gate drive functions are integrated into a single IC. In addition to CPU power, the IR3092 offers a
compact, efficient solution for high current POL converters.
FEATURES
5 bit or 6 bit VID with 0.5% overall system accuracy
Selectable VID Code for AMD Opteron, AMD Athlon or Intel VR10.X
Programmable Slew Rate response to "On-the-Fly" VID Code Changes
3.5A Gate 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 21V input with 7.8V Under-Voltage Lockout
5V UVL with 4.3V Under-Voltage Lockout threshold
Adjustable Voltage, 150mA Bias Regulator provides MOSFET Drive Voltage
Enable Input
OVP Output
Available in a 48L MLPQ package
ORDERING INFORMATION
DEVICE ORDER QUANTITY
IR3092MTR 3000 per Reel
*IR3092M 100 piece strips
Samples Only
PACKAGE INFORMATION
< u: m o
E 0 o >
- VID3 GATEHI -
- VI04 PGND1 -
- ROSC IR3092 GATEL1 - 48L MLPQ
- VOSNS- VCCL - 7 7 B d
- OCSET 48LDMLfN2 5VUVL - ( X mm o y)
- VDAC GATEL2 - - e - 27°C/W
VDRP PGND
FB GATEH2 -
- EAOUT VCCH2 -
- SS/DEL NC -
- scour, NC -
- NC w - -, NC -
S 3 D cu m
E E o g g h l
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Page 1 of 37 06/25/04
International
TWR Rectifier IR3092
PIN DESCRIPTION
PIN# PIN SYMBOL PIN DESCRIPTION
1 VID3 Inputs to VID D to A Converter
2 VID4 Inputs to VID D to A Converter
3 ROSC Connect a resistor to VOSNS- to program oscillator frequency and FB, OCSET, BBFB, and VDAC bias currents
4 VOSNS- Remote Sense Input. Connect to ground at the Load.
5 OCSET Programs the hiccup over-current threshold through an external resistor tied to VDAC and an internal current
source.
VDAC Regglated voltage programmed by the VID inputs. Current Sensing and Over Current Protection are referenced
to this pin. Connect an external RC network to VOSNS- to program Dynamic VID slew rate.
VDRP Buffered IIN signal. Connect an external RC network to FB to program converter output impedance
Inverting input to the Error Amplifier. Converter output voltage is offset from the VDAC voltage through an
8 FB external resistor connected to the converter output voltage at the load and an internal current source. Bias
current is a function of ROSC. Also OVPsense.
9 EAOUT Output of the Error Amplifier
10 SS/DEL Controls Conyetter Softstart, Power Good, and Over-Current Timing. Connect an external capacitor to LGND to
program the timing.
11 SCOMP Compensation for the Current Share control loop. Connect a capacitor to ground to set the control loop‘s
bandwidth. Phase 2 IS forced to match phase I's current.
12 MC No Connect.
13 LGND Local Ground and IC substrate connection
14 SETBIAS External resistor to ground sets voltage at BIASOUT pin. Bias current is a function of ROSC.
15 VCC Power for internal circuitry and source for BIASOUT regulator
16-17 N/C No Connect.
18 BIASOUT 150mA open-looped regulated voltage set by SETBIAS tor GATE drive bias.
19 PWRGD Open Collector output that drives low during Sottstart or any fault condition. Connect external pull-up.
2O CSINP2 Non-inverting input to the Phase 2 Current Sense Amplifier.
21 MC No Connect.
22 VID_SEL Ground Selects VR10 VID, Float Selects OPTERON VID, VCC Selects ATHLON VID
23-27 N/C No Connect.
28 VCCH2 Power for Phase 2 High-Side Gate Driver
29 GATEH2 Phase 2 High-Side Gate Driver Output and input to GATEL2 non-overlap comparator.
30 PGND2 Return for Phase 2 Gate Drivers
31 GATEL2 Phase 2 Low-Side Gate Driver Output and input to GATEH2 non-overlap comparator.
32 5VUVL Can be used-t-o m-or-ti-tor the driver supply voltage or 5V supply voltage when converting from 5V. An under
voltage condition Initiates Soft Start.
33 VCCL Power for Phase 1 and 2 Low-Side Gate Drivers.
34 GATEL1 Phase 1 Low-Side Gate Driver Output and input to GATEH1 non-overlap comparator.
35 PGND1 Return for Phase 1 Gate Drivers
36 GATEH1 Phase 1 High-Side Gate Driver Output and input to GATEL1 non-overlap comparator.
37 VCCH1 Power for Phase 1 High-Side Gate Driver
38 NC Not connected
39 CSINM1 Inverting input to the Phase 1Current Sense Amplifier.
40 CSINP1 Non-inverting input to the Current Sense Amplifier.
41 OVP Output that drives high during an Over-Voltage condition.
42 ENABLE Enable Input. A logic low applied to this pin puts the IC into Fault mode.
43-44 N/C No Connect.
45 VID5 Inputs to VID D to A Converter
46 VIDO Inputs to VID D to A Converter
47 VID1 Inputs to VID D to A Converter
48 VID2 Inputs to VID D to A Converter
Page 2 of 37 06/25/04
