IR3502AMTRPBF ,Complete VR11.0 or VR11.1 power solution. IR3502A DATA SHEET TM XPHASE3 CONTRO ..
IR3502BM ,Control IC combined with an XPHASE3 IC provides a full featured and flexible way to implement a complete VR11.0 and VR11.1 power solution. IR3502B DATA SHEET TM XPHASE3 CONTROL IC DES ..
IR3502BMTRPBF ,Control IC combined with an XPHASE3 IC provides a full featured and flexible way to implement a complete VR11.0 and VR11.1 power solution. IR3502B DATA SHEET TM XPHASE3 CONTROL IC DES ..
IR3502BMTRPBF ,Control IC combined with an XPHASE3 IC provides a full featured and flexible way to implement a complete VR11.0 and VR11.1 power solution. IR3502B DATA SHEET TM XPHASE3 CONTROL IC DES ..
IR3502M ,Complete VR11.0 or VR11.1 power solution. IR3502 DATA SHEET TM XPHASE3 CONTROL IC DESCRIPTION TMThe IR3502 contr ..
IR3502MPBF ,Complete VR11.0 or VR11.1 power solution. IR3502 DATA SHEET TM XPHASE3 CONTROL IC DESCRIPTION TMThe IR3502 contr ..
IS42S16160B-7BLI , 32Meg x 8, 16Meg x16 256-MBIT SYNCHRONOUS DRAM
IS42S16160B-7TL , 32Meg x 8, 16Meg x16 256-MBIT SYNCHRONOUS DRAM
IS42S16160B-7TLI , 32Meg x 8, 16Meg x16 256-MBIT SYNCHRONOUS DRAM
IS42S16160C-6TL , 256 Mb Single Data Rate Synchronous DRAM
IS42S16160C-6TL , 256 Mb Single Data Rate Synchronous DRAM
IS42S16160C-7TL , 256 Mb Single Data Rate Synchronous DRAM
IR3502AMTRPBF
Complete VR11.0 or VR11.1 power solution.
International
TOR Rectifier IR3502A
DATA SHEET
XPHASE3TM CONTROL IC
DESCRIPTION
The IR3502A 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 IR3502A provides overall system control
and interfaces with any number of Phase ICs, 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
Small thermally enhanced 32L 5mm x 5mm MLPQ package
RoHS Compliant
ORDERING INFORMATION
Device Package Order Quantity
32 Lead MLPQ
|R3502AMTRPBF (5 x 5 mm body)
32 Lead MLPQ
(5 x 5 mm body)
3000 per reel
* IR3502AMPBF 100 piece strips
. Samples only
Page 1 of 38 December 17, 2009
International
TOR Rectifier IR3502A
APPLICATION CIRCUIT
+12V 12V
PGOOD PHSOUT
IOUT CLKOUT
> a " a F- _
n: = U a D D
a u x o o
-l > n. w x
o I _:
VID o n. 0 GND
VID6 ROSC
VID5 SS/DEL
VIDA VIU4 IR3502A VDAC
VID3 Vl03 VSETPT VDAC
VID2 VDAC_BUFF
VID1 VN
ENABLE
VOSEN+
VOSEN-
Figure 1: IR3502A Application Circuit
IR3502A AMPLIFIER
VDAC EAOUT 1k
BUFFER '
AMPLIFIER - M
LS VSETPT
VDAC RVDAC
OCSET ROCSET
T" - _ T" l ( T -
IVDHC I.;ET;/T@< CVDAC
L133“ ,:C,L’, =
ROSC BUFFER
CURRENT AMPLIFIER 0.6V
SOURCE LGND
IFUSC' GENERATOR ' I I
RUSC ROSC
AVt--w
REMOTE SENSE SYNEM
AMPLIFIER SET POINT
VOSEN' VOLTAGE
VDSEN- l"
Figure 2 -System-set point measurements.
Page 2 of 38 December 17, 2009
