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IR3082-IR3082MTR
XPHASE AMD OPTERON/ATHLON 64 CONTROL IC
International Data Sheet No. PD94710
19R Rectifier IR3082
XPHASETM AMD OPTERONTMIATHLON 64TM CONTROL IC
DESCRIPTION
The IR3082 Control IC combined with an IR XPhaseTM Phase IC provides a full featured and flexible way
to implement a complete Opteron or Athlon64 power solution. The "Control" IC provides overall system
control and interfaces with any number of "Phase ICs" which each drive and monitor a single phase of a
multiphase converter. With simple 5 bit voltage programming and a few external components, the IR3082
is also well suited for general purpose multiphase applications. The XPhaseTM architecture results in a
power supply that is smaller, less expensive, and easier to design while providing higher efficiency than
conventional approaches.
FEATU RES
5 bit VID with 1% overall system set point accuracy
Programmable Dynamic VID Slew Rate
+/-300mV Differential Remote Sense
Programmable 150kHz to 1MHz oscillator
Programmable VID Offset and Load Line output impedance
Programmable Softstart
Programmable Hiccup Over-Current Protection with Delay to prevent false triggering
Simplified Power Good output provides indication of proper operation and avoids false triggering
Operates from 12V input with 9.75V Under-Voltage Lockout
7.0V/5mA Bias Regulator provides System Reference Voltage
Small thermally enhanced 20L MLPQ package
APPLICATION CIRCUIT
POWER GOOD
ENABLE
VIDO ll ‘g g E VCC
VID1 11313085 VBIAS
VIDZ CONTROL EAOUT
5 Wire Analog Bus
(to PHASE ICs)
VID3 FB
6 7 8 9 tl
ROCSET
VCC SENSE
VSS SENSE
Page 1 of 1 12/17/04
International
19R Rectifier
IR3082
ORDERING INFORAMATION
Device Order Quantity
|R3082MTR 3000 per reel
* IR3082M 100 piece strips
* Samples only
ABSOLUTE MAXIMUM RATINGS
Operating Junction Temperature ................. 150°C
Storage Temperature Range ...................... -65°C to 150°C
ESD Rating ............................................. HBM Class 1C JEDEC standard
PIN # PIN NAME
1-5 VIDO-4
6 VOSNS-
7 ROSC
8 VDAC
9 OCSET
10 IIN
1 1 VDRP
13 EAOUT
14 VBIAS
15 VCC
16 LGND
17 RMPOUT
18 SS/DEL
19 PWRGD
20 ENABLE
Page 2 of 2
lSOURCE
12/17/04
