IRDCIP2021C-2 datasheet, PDF - EEWORLD Datasheet

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IRDCIP2021C-2: Descriptionboard demo sync buck conveter; CategoryDevelopment board/suite/development tools; File Size1MB，15 Pages; ManufacturerInternational Rectifier （ Infineon ）; Websitehttp://www.irf.com/

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IRDCIP2021C-2 Overview

board demo sync buck conveter

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EFERENCE

ESIGN

IRDCiP2021C-2: 500kHz, 20A, Dual Output,

180

Out of Phase Synchronous Buck Converter

Featuring iP2021C and IR3623M

Overview

IRDCiP2021C-2

International Rectifier



233 Kansas Street, El Segundo, CA 90245 USA

This reference design is capable of delivering a continuous current of 20A per

channel at an ambient temperature of 45ºC and airflow of 200LFM. Fig. 4 –

Fig. 22 provide performance graphs, thermal images, and waveforms. Fig. 1 –

Fig. 3 are provided to engineers as design references for implementing an

IR3623+iP2021C solution.

The components installed on this demoboard were selected based on operation

at an input voltage of 12V (+/-10%), a switching frequency of 500kHz (+/-

15%), and an output voltage of 1.5V at channel-1 and 2.5V at channel-2. Major

changes from these set points may require optimizing the control loop and/or

adjusting the values of input/output filters in order to meet the user’s specific application requirements. Refer to iP2021C and

IR3623 datasheets for more information.

IRDCiP2021C-2 Recommended Operating Conditions

(refer to the iP2021C datasheet for maximum operating conditions)

Input voltage:

8.5V – 14.5V

Output voltage:

0.8 – 5V

Switching Freq:

500kHz

Output current:

This reference design is capable of delivering a continuous current of 20A per channel without heatsink

at an ambient temperature of 45ºC and airflow of 200LFM.

Demoboard Quick Start Guide

Initial Settings:

VOUT1 is set to 1.5V, but can be adjusted from 0.8V to 5V by changing the values of R11 and R15 according to the following

formula:

R11 = R15 = (10k * 0.8) / (VOUT1 - 0.8)

VOUT2 is set to 2.5V, but can be adjusted from 0.8V to 5V by changing the values of R12 and R16 according to the following

formula:

R12 = R16 = (10k * 0.8) / (VOUT2 - 0.8)

The switching frequency is set to 500kHz, but can be adjusted by changing the value of R26. See Fig. 4 for the relationship

between R26 and the switching frequency.

8/13/2009

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