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IR3500VM
Control IC combined with one or more xPhase3 Phase IC implement the control and MOSFET driver functions for a VR11.1 CPU VTT power supply.
International
TOR Rectifier IR3500V
DATA SHEET
XPHASEsTM VR11.1 CPU VTT CONTROL IC
DESCRIPTION
The lR3500V Control IC combined with one or more XPhaseBTM Phase IC implement the control and
MOSFET driver functions for a VR11.1 CPU VTT power supply.
FEATURES
. 1 to X phase operation with matching Phase IC
0.7% overall system set point accuracy
Programmable 250kHz to 9MHz Daisy-chain digital phase timing clock oscillator frequency provides a per
phase switching frequency of 250kHz to 1.5MHz without external components
Programmable Dynamic VID Slew Rate
Programmable Load Line Output Impedance
High speed error amplifier with wide bandwidth of 30MHz and fast slew rate of 12V/us
Programmable converter current limit during soft start, hiccup with delay during normal operation
Central over voltage detection with programmable threshold and communication to phase IC(s)
Over voltage signal output to system with overvoltage detection during powerup and normal operation
Detection and protection of open remote sense line and open control loop
IC bias linear regulator control with programmable output voltage and UVLO
Programmable VRHOT function monitors temperature of power stage through a NTC thermistor
Remote sense amplifier with true converter voltage sensing and less than 50uA bias current
Simplified PGOOD output provides indication of proper operation and avoids false triggering
Small thermally enhanced 32L 5mm x 5mm MLPQ package
RoHS Compliant
RVCULFBI chcuaz UVCCL
RVCCLDRV l I
PGOOD =r-
pppppp
VCCLDR
vma nose / ovp 23
CSS/DEL
VID5 SS/DEL 22_{ _",'ii'ii-rr"
VIDA IR3500V VDAC -2-1-e,hci-',i'-"r"-"-(
20 're SET CVDAC==
VIDS t:>
VIDe I:>
VID3 OCSET
19 0 CIN
EAIN —‘5-
lez VSETPT
16 1 12 RCS CCS
vim [IN iSHARE sw
17 2 ll E s-lf-" -<=I VOUTSENSE+
vIDu Fvnnp mow IR3505 GATEH L
g E g la- LGND BOOST 10 l ’WV‘ <3 VOUT+
PHSIN 's VCCL
mmeblmml—
ENABLE
HOTSET
VOSEN-
VOSENo
DISTRIBUTION -
ENABLE =-
VRHOT (cF- v-v--! HEI IMPE
RHOTSETZ RFBI cra RDRP RCP CCP C] VOUT-
w---] _ cvch
RFB com _<:
s--"sels--_
RHOTSET1
RFB RYHERMISTORI
Close a
RTHERMISTORZ Poker Stage
VOUT SENSE-
Figure 1 - Single Phase VR11.1 CPU VTT Application Circuit
Page 1 of 34 July 28, 2008
International
TOR Rectifier I R3500V
ORDERING INFORMATION
Device Package Order Quantity
lR3500V MTRPBF 32 Lead MLPQ 3000 per reel
(5 x 5 mm body)
* lR3500V MPBF 32 Lead MLPQ 100 piece strips
*Samples only (5 x 5 mm body)
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed below may cause permanent damage to the device. These are stress
ratings only and functional operation of the device at these or any other conditions beyond those
indicated in the operational sections of the specifications are not implied.
Operating Junction Temperature ................. ot to 150°C
Storage Temperature Range ...................... -65°C to 150°C
ESD Rating ............................................. HBM Class 1C JEDEC Standard
MSL Rating ............................................. 2
Reflow Temperature .................................. 260°C
PIN ft PIN NAME VMAx lsounce
1-8 VID7-0 7.5V 1mA
9 ENABLE 3.5V 1mA
10 VRHOT 7.5V 1mA
11 HOTSET 7.5V 1mA
12 VOSEN- 1.0V 5mA
13 VOSEN+ 7.5V 5mA
14 V0 7.5V 5mA
15 FB 7.5V 1mA
16 EAOUT 7.5V 25mA
17 VDRP 7.5V 35mA
18 IIN 7.5V 100mA
19 VSETPT 3.5V 1mA
20 OCSET 7.5V 1mA
21 VDAC 3.5V 1mA
22 SS/DEL 7.5V 1mA
23 ROSC/OVP 7.5V 1mA
24 LGND n/a 20mA
25 CLKOUT 7.5V 100mA
26 PHSOUT 7.5V 10mA
27 PHSIN 7.5V 1mA
28 VCCL 7.5V 1mA
29 VCCLFB 3.5V 1mA
30 VCCLDRV 10V 1mA
31 PGOOD VCCL + 0.3V 1mA
32 VIDSEL 7.5V 5mA
Page 2 of 34 July 28, 2008
