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IRDCIP2003A-C Datasheet

  • IRDCIP2003A-C

  • 1MHz, 160A, Synchronous Buck Converter Using iP2003A

  • 8頁

  • IRF

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R
EFERENCE
D
ESIGN
Overview
This reference design is capable of delivering up to a current of
160A with the enclosed heatsink attached at an ambient
temperature of 60潞C with 400LFM or an ambient temperature of
45潞C with 200LFM of airflow. Performance graphs and waveforms
are provided in figures 1鈥?. The figures and table in pages 5 鈥?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.
IRDCiP2003A-C
International Rectifier
鈥?/div>
233 Kansas Street, El Segundo, CA 90245 USA
IRDCiP2003A-C: 1MHz, 160A, Synchronous Buck
Converter Using iP2003A
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:
R3 = R32 = (24.9k x 0.8) / (VOUT - 0.8)
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)
1
Input voltage:
5V - 12V
Output voltage:
0.8 - 3.3V
Switching Freq:
1MHz per phase, 4MHz effective output frequency.
Output current:
This reference design is capable of delivering up to 160A with the enclosed heatsink attached, at an
ambient temperature of 60潞C with 400LFM of airflow, or an ambient temperature of 45潞C with 200LFM of
airflow.
1
Note: If Vin = 5V, then connect Vin to test point TP3 and Terminal T1 and remove jumper J1. Refer to schematic for details.
Additionally, the threshold of the POR circuit should be adjusted to allow the supply to sequence properly.
12/03/04

IRDCIP2003A-C 產(chǎn)品屬性

  • 1

  • 編程器，開發(fā)系統(tǒng)

  • 過時/停產(chǎn)零件編號

  • -

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