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IRU3011CWTR

P1-P3P4-P6P7-P9P10-P12P13-P13
IRU3011
1
Rev. 1.6
08/20/02
www.irf.com
TYPICAL APPLICATION
DESCRIPTION
The IRU3011 controller IC is specifically designed to meet
Intel specification for latest Pentium III microproces-
sor applications as well as the next generation P6 fam-
ily processors. These products feature a patented topol-
ogy that in combination with a few external components
as shown in the typical application circuit,will provide in
excess of 20A of output current for an on-board DC/DC
converter while automatically providing the right output
voltage via the 5-bit internal DAC. These devices also
features, loss less current sensing by using the RDS(ON)
of the high side Power MOSFET as the sensing resis-
tor, a Power Good window comparator that switches its
open collector output low when the output is outside of a
±10% window and an Over-Voltage Protection output.
Other features of the device are: Under-voltage lockout
for both 5V and 12V supplies, an external programmable
soft-start function as well as programming the oscillator
frequency by using an external capacitor.
Dual Layout compatible with HIP6004A
Designed to meet Intel specification of VRM8.4 for
Pentium III
On-Board DAC programs the output voltage from
1.3V to 3.5V. The IRU3011 remains on for VID code
of (11111).
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
Over-Voltage Protection Output
Soft-Start
High current totem pole driver for direct driving of the
external power MOSFET
Power Good Function
PACKAGE ORDER INFORMATION
FEATURES
5-BIT PROGRAMMABLE SYNCHRONOUS BUCK
CONTROLLER IC
APPLICATIONS
Pentium III & Pentium II processor DC to DC
converter application
Low Cost Pentium with AGP
Note: Pentium II and Pentium III are trade marks of Intel Corp.
TA (8C) DEVICE PACKAGE VID VOLTAGE RANGE
0 To 70 IRU3011CW 20-Pin Plastic SOIC WB (W) 1.3V to 3.5V
Data Sheet No. PD94143
Figure 1 - Typical application of the IRU3011.
V
OUT
(1.3V - 3.5V)
5V
12V
VID0
Power Good
Q2
VID1
VID2
VID3
VID4
L1
C5 R1
C3
C6
Q1
R2
R3
C8
R4
C10
C14
C1
C7
C2
R6
C12
R8
C13
C11
R7
R9
R5
C9
D1
C4
L2
HDrv LDrv
NC/Gnd
SS
CS+ Gnd NC/Sen
D3 D2D4 D1 D0
IRU3011
VFB
V5/Comp
CS-V12 NC/
Boot
OVP PGdCt/Rt
OVP
2
Rev. 1.6
08/20/02
IRU3011
www.irf.com
ELECTRICAL SPECIFICATIONS
Unless otherwise specified, these specifications apply over V12=12V, V5=5V and TA=0 to 70°C. Typical values refer
to TA=25°C. Low duty cycle pulse testing is used which keeps junction and case temperatures equal to the ambient
temperature.
ABSOLUTE MAXIMUM RATINGS
V5 Supply Voltage .................................................... 7V
V12 Supply Voltage .................................................. 20V
Storage Temperature Range ...................................... -65°C To 150°C
Operating Junction Temperature Range ...................... 0°C To 125°C
PACKAGE INFORMATION
20-PIN WIDE BODY PLASTIC SOIC (W)
VID Section
DAC Output Voltage (Note 1)
DAC Output Line Regulation
DAC Output Temp Variation
VID Input LO
VID Input HI
VID Input Internal Pull-Up
Resistor to V5
Power Good Section
Under-Voltage lower trip point
Under-Voltage upper trip point
UV Hysterises
Over-Voltage upper trip point
Over-Voltage lower trip point
OV Hysteresis
Power Good Output LO
Power Good Output HI
Soft-Start Section
Soft-Start Current
uJA =858C/W
Ct
OVP
V12
LDrv
Gnd
NC
HDrv
CS-
PGd
NC
NC
CS+
SS
D0
D1
D2
D3
D4
V5
VFB
4
3
2
1
7
6
5
18
19
20
TOP VIEW
11
13
12
14
10
15
9
16
8
17
PARAMETER SYM TEST CONDITION MIN TYP MAX UNITS
VOUT Ramping Down
VOUT Ramping Up
VOUT Ramping Up
VOUT Ramping Down
RL=3mA
RL=5K Pull-Up to 5V
CS+=0V, CS-=5V
0.99Vs
2
0.89Vs
0.015Vs
1.09Vs
0.015Vs
4.8
Vs
27
0.90Vs
0.92Vs
0.02Vs
1.10Vs
1.08Vs
0.02Vs
10
1.01Vs
0.1
0.5
0.4
0.91Vs
0.025Vs
1.11Vs
0.025Vs
0.4
V
%
%
V
V
KV
V
V
V
V
V
V
V
V
mA
IRU3011
3
Rev. 1.6
08/20/02
www.irf.com
UVLO Section
UVLO Threshold-12V
UVLO Hysteresis-12V
UVLO Threshold-5V
UVLO Hysteresis-5V
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
Supply Current
Operating Supply Current
Output Drivers Section
Rise Time
Fall Time
Dead Band Time
Oscillator Section
Osc Frequency
Osc Valley
Osc Peak
Over-Voltage Section
OVP Drive Current
PARAMETER SYM TEST CONDITION MIN TYP MAX UNITS
Table 1 - Set point voltage vs. VID codes.
Note 1: Vs refers to the set point voltage given in Table 1.
D4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
D3
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
D2
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
D1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
D0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
Vs
1.30
1.35
1.40
1.45
1.50
1.55
1.60
1.65
1.70
1.75
1.80
1.85
1.90
1.95
2.00
2.05
D4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
D3
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
D2
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
D1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
D0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
Vs
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.5
Supply Ramping Up
Supply Ramping Up
VDIFF=10mV
Css=0.1mF
CL=3000pF:
V5
V12
CL=3000pF
CL=3000pF
CL=3000pF
Ct=150pF
9.2
0.3
4.1
0.2
-2
160
-5
100
190
10
0.4
4.3
0.3
200
20
14
70
70
200
220
V5
10.8
0.5
4.5
0.4
2
+2
100
240
+5
2
100
130
300
250
0.2
V
V
V
V
mA
mV
ns
mA
mV
%
mA
ns
ns
ns
KHz
V
V
mA
P1-P3P4-P6P7-P9P10-P12P13-P13

IRU3011CWTR

Mfr. #:
Buy IRU3011CWTR
Manufacturer:
Infineon Technologies
Description:
IC REG CTRLR INTEL 1OUT 20SOIC
Lifecycle:
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