IRDCIP2003A-C International Rectifier, IRDCIP2003A-C Datasheet

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IRDCIP2003A-C

Manufacturer Part Number
IRDCIP2003A-C
Description
KIT DESIGN 4PH 160A 1MHZ IP2003A
Manufacturer
International Rectifier
Datasheet

Specifications of IRDCIP2003A-C

Lead Free Status / RoHS Status
Lead free / RoHS Compliant
R
Overview
This reference design is capable of delivering up to a current of
160A with the enclosed heatsink attached at an ambient
temperature of 60ºC with 400LFM or an ambient temperature of
45ºC with 200LFM of airflow. Performance graphs and waveforms
are provided in figures 1–9. The figures and table in pages 5 – 8
are provided as a reference design to enable engineers to very
quickly and easily design a 4-phase converter. Refer to the data
sheet for the controller listed in the bill of materials in order to
optimize this design to your specific requirements. A variety of other
controllers may also be used, but the design will require layout and
control circuit modifications.
Demoboard Quick Start Guide
Initial Settings:
The output is set to 1.3V, but can be adjusted from 0.8V to 3.3V by changing the voltage divider values of R3 and R32 according
to the following formula:
The switching frequency per phase is set to 1MHz with the frequency set resistor R4. This creates an effective output frequency of
4MHz. The graph in figure 11 shows the relationship between R4 and the switching frequency per phase. The frequency may be
adjusted by changing R4 as indicated; however, extreme changes from the 1MHz set point may require redesigning the control
loop and adjusting the values of input and output capacitors. Refer to the SOA graph in the iP2003A datasheet for maximum
operating current at different conditions.
Procedure for Connecting and Powering Up Demoboard:
1. Apply input voltage across (+12V) across VIN and PGND.
2. Apply load across VOUT pads and PGND pads.
3. Adjust load to desired level. See recommendations below.
IRDCiP2003A-C Recommended Operating Conditions
(refer to the iP2003A datasheet for maximum operating conditions)
Input voltage:
Output voltage:
Switching Freq:
Output current:
1
Additionally, the threshold of the POR circuit should be adjusted to allow the supply to sequence properly.
R
Note: If Vin = 5V, then connect Vin to test point TP3 and Terminal T1 and remove jumper J1. Refer to schematic for details.
International Rectifier • 233 Kansas Street, El Segundo, CA 90245 USA
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E
F
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IRDCiP2003A-C: 1MHz, 160A, Synchronous Buck
E
E
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R
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5V - 12V
0.8 - 3.3V
1MHz per phase, 4MHz effective output frequency.
This reference design is capable of delivering up to 160A with the enclosed heatsink attached, at an
ambient temperature of 60ºC with 400LFM of airflow, or an ambient temperature of 45ºC with 200LFM of
airflow.
E
R3 = R32 = (24.9k x 0.8) / (VOUT - 0.8)
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N
1
C
C
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Converter Using iP2003A
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D
D
E
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12/03/04
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S
I
I
G
G
N
N
IRDCiP2003A-C

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IRDCIP2003A-C Summary of contents

Page 1

... International Rectifier • 233 Kansas Street, El Segundo, CA 90245 USA IRDCiP2003A-C: 1MHz, 160A, Synchronous Buck Overview This reference design is capable of delivering current of 160A with the enclosed heatsink attached at an ambient temperature of 60ºC with 400LFM or an ambient temperature of 45ºC with 200LFM of airflow. Performance graphs and waveforms are provided in figures 1– ...

Page 2

... IRDCiP2003A-C_ ____ 55 12V 50 1.3V 45.0 OUT f = 1MHz SW 40.0 ° 35.0 A 30.0 25.0 20.0 15.0 10.0 5.0 0 100 Output Current (A) Fig. 1: Power Loss vs. Current V = 12V 1.3V OUT I = 160A OUT f = 1MHz SW ° 12V 1.3V OUT I = 160A, OUT f = 1MHz 25°C A Ripple = 90mVp-p Fig. 4: Input Voltage Ripple Waveform www ...

Page 3

... V = 12V 1.3V OUT Ch 160A 2V/div OUT f = 1MHz 25° OUT 0.5V/div Fig. 7: Power Up Waveform Fig. 9: Short Circuit Condition Waveform __IRDCiP2003A 100 Output Current (A) Ch 2V/div Fig. 8: Power Down Waveform Ch OUT 1V/div Hiccups Short until short circuit at circuit is start-up removed Ch 50A/div 12V ...

Page 4

... IRDCiP2003A-C_ ____ *>120.0° 12V 1.3V OUT I = 160A OUT 120 1MHz 45°C A Airflow = 200LFM 100.0 80.0 60.0 40.0 *<21.3°C *>120.0° 12V 1.3V OUT I = 160A OUT 120 1MHz 60°C A Airflow = 400LFM 100.0 80.0 60.0 40.0 *<21.3°C Fig. 10: Thermal Images With Board and Heatsink Temperatures www ...

Page 5

... C. The trip point will be higher than expected if the Over-Current Trip Point (per Phase) Fig. 11: R vs. Current (per Phase) ISEN Output Frequency (kHz) (per Phase) Fig. 12: R4 vs. Frequency (per Phase) ...

Page 6

... IRDCiP2003A-C_ ____ Fig. 13: Component Placement Top Layer Heatsink Notes: 1) Always use the supplied Berquist Gap Pad 2) Torque 5 x #2-56 machine screws to 15 +/-1 in-oz. 3) The heatsink is optimized for 400 LFM with unconfined airflow. Performance will improve with more airflow or confined airflow. 4) Airflow direction should be parallel to fins for maximum performance. ...

Page 7

... VSWS2 10 VSWS1 9 COMP 3 DROOP __IRDCiP2003A-C open 100uF 100uF 100uF open open open open 10uF 10uF 10uF 10uF 10uF 10uF 10uF 10uF 2.2uF 2.2uF 2.2uF 2.2uF VSWS2 10 VSWS1 9 Fig. 15: Reference Design Schematic ...

Page 8

... IRDCiP2003A-C_ ____ Table 1: Reference Design Bill of Materials Refer to the following application notes for detailed guidelines and suggestions when implementing iPOWIR Technology products: AN-1028: Recommended Design, Integration and Rework Guidelines for International Rectifier’s iPowIR Technology BGA and LGA and Packages This paper discusses optimization of the layout design for mounting iPowIR BGA and LGA packages on printed circuit boards, accounting for thermal and electrical performance and assembly considerations ...

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