IRU3007CWTR International Rectifier, IRU3007CWTR Datasheet

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IRU3007CWTR

Manufacturer Part Number
IRU3007CWTR
Description
IC CTRL/REG SYNC BUCK 28-SOIC
Manufacturer
International Rectifier
Datasheet

Specifications of IRU3007CWTR

Applications
Controller, Intel Pentium® II
Voltage - Input
5V, 12V
Number Of Outputs
4
Voltage - Output
1.3 ~ 3.5 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
28-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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Part Number
Manufacturer
Quantity
Price
Part Number:
IRU3007CWTR
Manufacturer:
IR
Quantity:
20 000
FEATURES
APPLICATIONS
TYPICAL APPLICATION
PACKAGE ORDER INFORMATION
Rev. 2.1
08/20/02
5-BIT PROGRAMMABLE SYNCHRONOUS BUCK, NON-SYNCHRO-
Provides Single Chip Solution for Vcore, GTL+,
Clock Supply & 3.3V Switcher On-Board
Second switcher provides simple control for the
on-board 3.3V supply
200mA On-Board LDO Regulator
Designed to meet Intel VRM 8.2 and 8.3 specifica-
tion for Pentium II
On-Board DAC programs the output voltage from
1.3V to 3.5V
Linear Regulator Controller On-Board for 1.5V
GTL+ supply
Loss-less Short Circuit Protection
Synchronous Operation allows maximum efficiency
Patented architecture allows fixed frequency
operation as well as 100% duty cycle during
dynamic load
Minimum Part Count
Soft-Start
High current totem pole drivers for directly driving
the external Power MOSFETs
Power Good function monitors all outputs
Over-Voltage Protection circuitry protects the
switcher outputs and generates a fault output
Thermal Shutdown
Total Power Solution for Pentium II processor
application
V
V
O U T
O U T
5V
2
3
NOUS, ADJUSTABLE LDO AND 200mA ON-BOARD LDO
T
0 To 70
A
(°C)
Figure 1 - Typical application of IRU3007.
IRU3007CW
DEVICE
SWITCHER2
CONTROL
CONTROL
IRU3007
LINEAR
www.irf.com
DESCRIPTION
The IRU3007 controller IC is specifically designed to meet
Intel specification for Pentium II
plications as well as the next generation of P6 family
processors. The IRU3007 provides a single chip control-
ler IC for the Vcore, LDO controller for GTL+ and an
internal 200mA regulator for clock supply which are re-
quired for the Pentium II applications. It also contains a
switching controller to convert 5V to 3.3V regulator for
on-board applications that uses either AT type power
supply or is desired not to rely on the ATX power supply’s
3.3V output. These devices feature a patented topology
that in combination with a few external components, as
shown in the typical application circuit, will provide in
excess of 14A of output current for an on-board DC/DC
converter while automatically providing the right output
voltage via the 5-bit internal DAC. The IRU3007 also fea-
tures, loss-less current sensing for both switchers by
using the R
sensing resistor, internal current limiting for the clock
supply, a Power Good window comparator that switches
its open collector output low when any one of the out-
puts is outside of a pre-programmed window. Other fea-
tures of the device are: Under-Voltage Lockout for both
5V and 12V supplies, an external programmable soft-
start function, programming the oscillator frequency via
an external resistor, Over-Voltage Protection (OVP) cir-
cuitry for both switcher outputs and an internal thermal
shutdown.
REGULATOR
SWITCHER1
CONTROL
Note: Pentium II and Pentium Pro are trademarks of Intel Corp.
LINEAR
28-pin Plastic SOIC WB (W)
DS(on)
PACKAGE
of the high-side power MOSFET as the
Data Sheet No. PD94142
microprocessor ap-
IRU3007
V
V
O U T
O U T
1
4
1

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IRU3007CWTR Summary of contents

Page 1

PROGRAMMABLE SYNCHRONOUS BUCK, NON-SYNCHRO- NOUS, ADJUSTABLE LDO AND 200mA ON-BOARD LDO FEATURES Provides Single Chip Solution for Vcore, GTL+, Clock Supply & 3.3V Switcher On-Board Second switcher provides simple control for the on-board 3.3V supply 200mA On-Board LDO Regulator ...

Page 2

IRU3007 ABSOLUTE MAXIMUM RATINGS V5 Supply Voltage .................................................... 7V V12 Supply Voltage .................................................. 20V Storage Temperature Range ...................................... -65°C To 150°C Operating Junction Temperature Range ..................... PACKAGE INFORMATION 28-PIN WIDE BODY PLASTIC SOIC (W) TOP VIEW UGate2 1 28 V12 ...

Page 3

PARAMETER SYM Error Comparator Section Input Bias Current Input Offset Voltage Delay to Output Current Limit Section CS Threshold Set Current CS Comp Offset Voltage Hiccup Duty Cycle Output Drivers Section Rise Time Fall Time Dead Band Time Between High ...

Page 4

IRU3007 Note 1: Vs refers to the set point voltage given in Table ...

Page 5

PIN# PIN SYMBOL PIN DESCRIPTION 10 Fb2 This pin provides the feedback for the non-synchronous switching regulator. A resistor divider is connected from this pin to V value of the resistor connected from supply voltage. A ...

Page 6

IRU3007 BLOCK DIAGRAM 4.3V Enable V12 28 UVLO 1.17Vset V5 11 Vset VID0 7 2.5V VID1 6 5Bit VID2 5 DAC 1.1Vset VID3 4 VID4 SEN Fb3 19 0.9Vset V12 Gate3 18 1.26V 0. ...

Page 7

TYPICAL APPLICATION 12V OUT 3. OUT 1.5V C17 V 4 OUT 2.5V C18 Figure 3 - Typical application of ...

Page 8

IRU3007 IRU3007 APPLICATION PARTS LIST Ref Desig Description Q1 MOSFET Q2 MOSFET Q3 MOSFET Q4 MOSFET with Schottky D1 Diode L1 Inductor L2 Inductor L3 Inductor C1 Capacitor, Electrolytic C2 Capacitor, Electrolytic C3 Capacitor, Electrolytic C4, 13 Capacitor, Ceramic C5, ...

Page 9

TYPICAL APPLICATION (Dual Layout with HIP6019) 12V OUT 2 3. OUT 1.5V C17 V OUT 4 2.5V C18 Figure ...

Page 10

IRU3007 IRU3007 APPLICATION PARTS LIST Dual Layout with HIP6019 Ref Desig Description Q1 MOSFET Q2 MOSFET Q3 MOSFET Q4 MOSFET with Schottky D1 Diode L1 Inductor L2 Inductor L3 Inductor C1 Capacitor, Electrolytic C2 Capacitor, Electrolytic C3 Capacitor, Electrolytic C4, ...

Page 11

APPLICATION INFORMATION An example of how to calculate the components for the application circuit is given below. Assuming, two set of output conditions that this regula- tor must meet for Vcore: a) Vo=2.8V , Io=14.2A, DVo=185mV, DIo=14.2A b) Vo=2V , ...

Page 12

IRU3007 of the 1500mF, 6MV1500GX type Sanyo capacitors. With Rs=5mV, the maximum ESR becomes 9.5mV which is equivalent to 4 caps. Another important consideration is that if a trace is being used to implement the resistor, the power dissipated by ...

Page 13

MAX DS(MAX) 2 30.029 = 2.21W P = 0.76310 Maximum R of the MOSFET at 1258C DS(MAX) DS(ON) For diode, the maximum power dissipation happens at minimum Vo and minimum ...

Page 14

IRU3007 For 2.5V supply Assuming R = 1.02KV ( REF Rt = 1.023 (2.5 / 1.26 1KV Switcher Output Voltage Adjust Vcore As it was discussed ...

Page 15

Start the layout by first placing the power components: 1) Place the input capacitors C3 and C14 and the high side MOSFETs, Q1 and Q3 as close to their respec- tive input caps as possible. 2) Place the synchronous MOSFET, ...

Page 16

IRU3007 28-Pin Surface Mount, Wide Body PIN NO. 1 NOTE: ALL MEASUREMENTS ARE IN MILLIMETERS. 16 (W) SOIC Package C E DETAIL 0.51 0.020 SYMBOL 28-PIN MIN MAX ...

Page 17

PACKAGE SHIPMENT METHOD PKG PACKAGE DESIG DESCRIPTION W SOIC, Wide Body IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 Rev. 2.1 08/20/02 PIN PARTS COUNT PER TUBE Feed Direction ...

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