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IR3505Z , XPHASE3TM PHASE IC
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IS42S16160C-7TL , 256 Mb Single Data Rate Synchronous DRAM
IS42S16160D-6BL , 32Meg x 8, 16Meg x16 256-MBIT SYNCHRONOUS DRAM
IS42S16160D-6T , 32Meg x 8, 16Meg x16 256-MBIT SYNCHRONOUS DRAM
IS42S16160D-6TI , 32Meg x 8, 16Meg x16 256-MBIT SYNCHRONOUS DRAM
IS42S16160D-6TL , 32Meg x 8, 16Meg x16 256-MBIT SYNCHRONOUS DRAM
IS42S16160D-6TLI , 32Meg x 8, 16Meg x16 256-MBIT SYNCHRONOUS DRAM
IR3502M-IR3502MPBF
Complete VR11.0 or VR11.1 power solution.
International
TOR Rectifier IR3502
DATA SHEET
XPHASE3TM CONTROL IC
DESCRIPTION
The IR3502 control IC combined with an XPHASE3TM Phase IC provides a full featured and flexible way to
implement a complete VR11.0 and VR11.1 power solution. The IR3502 provides overall system control
and interfaces with any number of Phase le, each driving and monitoring a single phase. The XPhase3TM
architecture results in a power supply that is smaller, less expensive, and easier to design while providing
higher efficiency than conventional approaches.
FEATURES
1 to X phase operation with matching Phase IC
0.5% overall system set point accuracy
Daisy-chain digital phase timing provides accurate phase interleaving without external components
Programmable 250kHz to 9MHz clock oscillator frequency provides per phase switching frequency of
250kHz to 1.5MHz
Programmable Dynamic VID Slew Rate
Programmable VID Offset or No Offset
Programmable Load Line Output Impedance
High speed error amplifier with wide bandwidth of 30MHz and fast slew rate of 10V/us
Programmable constant converter output current limit during soft start
Hiccup over current protection with delay during normal operation
Central over voltage detection and latch with programmable threshold and communication to phase ICs
Over voltage signal output to system with overvoltage detection during powerup and normal operation
Load current reporting
Single NTC thermistor compensation for correct current reporting, OC Threshold, and Droop
Detection and protection of open remote sense line
Open control loop protection
IC bias linear regulator controller
Programmable VRHOT function monitors temperature of power stage through a NTC thermistor
Remote sense amplifier with true converter voltage sensing
Simplified VR Ready (VRRDY) output provides indication of proper operation
Small thermally enhanced 32L 5mm x 5mm MLPQ package
RoHS compliant
ORDERING INFORMATION
Device Package Order Quantity
32 Lead MLPQ
IR3502MTRPBF (5 x 5 mm body)
32 Lead MLPQ
(5 x 5 mm body)
3000 per reel
* IR3502MPBF 100 piece strips
. Samples only
Page 1 of 39 July 28, 2009
International
TOR Rectifier IR3502
APPLICATION CIRCUIT
'''l'''l''lcul''lcul''l0'l cvo'l'c'VYs's' 1W“! “/“1/“/
d E E E d Z 's 's (1% it E j, 5 Z 's 's
g n: o 6' O , O O E n: o - 0 I' O O
1 F , d O > I I' E 24 1 _ , d > I I' E 24
- VID7 o > I 0 LGND - tltd VID7 o a. 0 GND "tr
> f > C
'L VID6 ROSC / OVP -2C' ik VID6 ROSC -25
3, VID5 SS/DEL -2'2 ik was SS/DEL -',Y
4_ VlD4 VDAC -21 sk VID4 VDAC AY
5 TR3500 2c (k IR3502 2c
- VID3 OCSET - VIDS VSETPT -
tL VID VSETPT _1Si sd VID VDAC_BUFF _1,c.
_ VID1 IIN -18 ik VID1 VN -18
'L VIDO 'hl _ t, ak Z+ _ VDRP -17 4d VIDO 5 _ t, si: 2 _ VDRP 4/
m C) (I) LIJ Lu D m C) (I) bid LIJ D
< I _ CD (D C) <: I _ (D © C)
z n: C) O O 0 co < z n: O o o <
LU > I > > > I Ll.l LU I > > LU
ol,cel,cluldsldrel t,'hi'):,'i1''h''p,')j's'aii';
Figure 1 - PIN difference between IR3500 and IR3502
+12V 12V
' CVCCL
VRRDY PHSOUT
IOUT CLKOUT
CLKOUT
VCC LD RV
PHSOUT
VID7 GND
VIDG ROSC
VID5 SS/DEL
V|D4 VID4 IR3502 VDAC
VID3 VIDS VSETPT VDAC
VID VDAC_BUFF
VID1 VN
HOTSET
ENABLE
ENABLE
RHOTSEI'1
RHOTS ET2
VOSEN+
VOSEN-
Figure 2 - IR3502 Application Circuit
Page 2 of 39 July 28, 2009
