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参数资料
| 型号： | IRDCIP2021C-2 |
| 厂商： | International Rectifier |
| 文件页数： | 1/15页 |
| 文件大小： | 0K |
| 描述： | BOARD DEMO SYNC BUCK CONVETER |
| 产品变化通告： | (EP) Parts Discontinuation 25/May/2012 |
| 标准包装： | 1 |
| 系列： | * |
R E F E R E N C E D E S I G N IRDCiP2021C-2
International Rectifier ? 233 Kansas Street, El Segundo, CA 90245 USA
IRDCiP2021C-2: 500kHz, 20A, Dual Output,
180 o Out of Phase Synchronous Buck Converter
Featuring iP2021C and IR3623M
Overview
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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