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IR3084U
XPHASE
DESCRIPTION
The IR3084U Control IC combined with an IR XPhaseTM Phase IC provides a full featured and flexible way to implement a complete VR10, VR11, 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. The XPhaseTM architecture results in a power supply that is smaller, less expensive, and easier to design while providing higher efficiency than conventional approaches. The IR3084U is based on the IR3084 VR10 Control IC, but incorporates the following modifications; • • • • • • • • Supports VR11 7-bit VID, VR10 7-bit extended VID, and Opteron/Athlon64 5-bit VID codes Supports both VR11 and legacy Opteron/Athlon64 start-up sequences VID Select pin sets the DAC to VR10, VR11, or Opteron/Athlon64 INTL_MD output pin indicates which DAC is selected – Intel or AMD VOSENS− float detection protects the CPU in the event that the VOSENS− trace is broken Enable Input Thresholds set by VID Select pin to either VR10, VR11 or Opteron/Athlon64 VID Input Thresholds set by VID Select pin to either 0.6V (VR10/VR11) or 1.24V (AMD) No-Load Setpoint Current changes polarity based on VID Select to accommodate VR10, VR11 (negative offset from DAC) or Opteron/Athlon64 (positive offset from DAC).
TM
Data Sheet No. PD94719
VR10, VR11 & OPTERON/ATHLON64 CONTROL IC
FEATURES
www.DataSheet4U.com
• • • • • • • • • • • • • • •
1 to X phase operation with matching Phase IC 7-bit VR 10/11 compatible VID with 0.5% overall system set point accuracy 5-bit Opteron/Athlon64 compatible VID with 1% overall system set point accuracy Programmable Dynamic VID Slew Rate +/-300mV Differential Remote Sense Programmable VID Offset Voltage at the Error Amplifier’s Non-Inverting Input allows Zero Offset Programmable 150kHz to 1MHz oscillator Programmable VID Offset and Load Line output impedance Programmable Hiccup Over-Current Protection with Delay to prevent false triggering Simplified VR Ready output provides indication of proper operation and avoids false triggering Operates from 12V input with 9.9V Under-Voltage Lockout 6.8V/6mA Bias Regulator provides System Reference Voltage Phase IC Gate Driver Bias Regulator / VRHOT Comparator Reduced Over-Current Detect Delay eliminates and external resistor in typical applications Small thermally enhanced 28L MLPQ package
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IR3084U
TYPICAL APPLICATION CIRCUIT
CCP1 100pF EA RT2 R117 4.7K, B=4450 1.21K +5.0V RCP 2.49K CCP 56nF R137 2K C204 0.1uF 27 15 19 20 C134 0.1uF C89 100pF VR_RDY ISHARE RMP VBIAS C135 1uF VREG_12V_FILTERED R1331 1 Q4 CJD200 VGDRIVE
RFB1 162 VCC_SENSE RFB 348
CFB 12nF 17 FB
18
U5
VSS_SENSE
C1009 1nF
RDRP1 750
EAOUT VRRDY IIN RMPOUT VBIAS
RDRP 750
IR3084UMTR
Q5 16 VDRP REGDRV REGFB REGSET OUTEN VID0 VID1 VID2 VID3 VID4 VID5 VID6 VID_SEL VREG_12V_FILTERED 21 R30 10 C130 0.1uF 26 CSS/DEL 0.1uF VCC SS/DEL 28 9 8 7 6 5 4 3 1 ENABLE VID0 VID1 VID2 VID3 VID4 VID5 VID6 VIDSEL INTL_MD 24 23 25 2 RVGDRV 97.6K Q6 RVSETPT1 124 VSETPT OCSET VDAC 14 13 12 11 ROSC 30.1K RVSETPT 124 ROCSET 12.7K RVDAC 3.5 CVGDRV 10nF
VDAC CVDAC 33nF
VOSNS-- LGND ROSC 10 22
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IR3084U
ORDERING INFORAMATION
DEVICE IR3084UMTRPBF IR3084UMPBF ORDER QUANTITY 3000 Tape and Reel 100 Piece Strip
ABSOLUTE MAXIMUM RATINGS
Operating Junction Temperature……………..0 to 150oC Storage Temperature Range………………….−65oC to 150oC ESD Rating………………………………………HBM Class 1B JEDEC standard Moisture Sensitivity Level………………………JEDEC Level 3 @ 260 oC
PIN # 1 2 3-9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
PIN NAME VIDSEL INTL_MD VID6−VID0 VOSNSROSC VDAC OCSET VSETPT IIN VDRP FB EAOUT RMPOUT VBIAS VCC LGND REGFB REGDRV REGSET SS/DEL VRRDY ENABLE
VMAX 20V 20V 20V 0.5V 20V 20V 20V 20V 20V 20V 20V 10V 20V 20V 20V n/a 20V 20V 20V 20V 20V 20V
VMIN -0.3V -0.3V -0.3V -0.5V -0.5V -0.3V -0.3V -0.3V -0.3V -0.3V -0.3V -0.3V -0.3V -0.3V -0.3V n/a -0.3V -0.3V -0.3V -0.3V -0.3V -0.3V
ISOURCE 1mA 1mA 1mA 10mA 1mA 1mA 1mA 1mA 1mA 5mA 1mA 20mA 5mA 50mA 1mA 50mA 1mA 10mA 1mA 1mA 1mA 1mA
ISINK 1mA 1mA 1mA 10mA 1mA 1mA 1mA 1mA 1mA 5mA 1mA 20mA 5mA 10mA 50mA 1mA 1mA 50mA 1mA 1mA 20mA 1mA
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IR3084U
ELECTRICAL SPECIFICATIONS
Unless otherwise specified, these specifications apply over: 9.5V ≤ VCC ≤ 16V, −0.3V ≤ VOSNS- ≤ 0.3V, 0 oC ≤ TJ ≤ 100 oC, ROSC = 24kΩ, CSS/DEL = 0.1μF ±10% PARAMETER VDAC REFERENCE VR10/VR11 System Set-Point Accuracy (Deviation from Tables 1 & 2 per test circuit in Figure 1 which emulates in-VR operation) Opteron/Athlon64 System SetPoint Accuracy Source Current Sink Current VR10/VR11 VIDx Input Threshold Opteron/Athlon64 VIDx Input Threshold VIDx Input Bias Current VIDx 11111x Blanking Delay VIDSEL Pull up Voltage VIDSEL Pull up Resistor VIDSEL VR10/Opteron Threshold VIDSEL Opteron Voltage VIDSEL Opteron/VR11 Threshold ERROR AMPLIFIER Input Offset Voltage FB Bias Current VSETPT Bias Current VSE.