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参数资料
| 型号： | IRDC5001-LS48V |
| 厂商： | International Rectifier |
| 文件页数： | 1/5页 |
| 文件大小： | 0K |
| 描述： | KIT EVAL ORING DEMO BOARD/IR5001 |
| 标准包装： | 1 |
| 主要目的： | 电源管理，O 环控制器/负荷分载 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | IR5001 |
| 主要属性： | 双 -48V 输入（-36 ~ -75 V）已经过“或运算”，最高 200 W 负载 |
| 已供物品： | 板，CD |
| 其它名称： | *IRDC5001-LS48V |
IRDC5001-LS48V
IR5001 Active ORing Demo Board Evaluation Procedure
International Rectifier ? 233 Kansas Street, El Segundo, CA 90245 USA
Overview
This document describes how to connect and evaluate the supplied IR5001 Active ORing demo board.
The purpose of this circuit is to demonstrate the Active ORing function for carrier-class system boards
(in which two negative 48V inputs (-36V to -75V range) are OR-ed to provide redundant board power),
and to show how the IR5001 can be used to implement Reverse Polarity protection for –48V input DC-
DC converters. The front side of the demo board is shown in Fig. 1.
FET Check LEDs
Input A+
Output+
Input B+
Input A-
Input B-
IRF7495 Active ORing
MOSFETs
IRF7495
IRF7495
FET Check
Switch
BUS Caps
BUS converter /
1/8 and 1/4 Brick
connections
Output-
IR5001 Active ORing
Controllers
Figure 1. IRDC5001-LS48V Demo Board
Active ORing Demo Board Quick Evaluation Procedure
The circuit schematic is shown in Fig. 2. The circuit incorporates two IR5001 Active ORing ICs (SO8
package), and two IRF7495, 22mOhm, 100V, N-Channel active ORing FETs, also in SO8 package. The
power MOSFETs used in this circuit are capable of handling up to 200W of redundant power in 36V to
75V range. For lower power applications, it is recommended to use slightly higher Rds(on) MOSFETs
to enable fastest response time after a reverse current is detected. The IRF7497, 36mOhm, 100V, N-
Channel active ORing FET is ideal for 60W applications. As a general design practice, the active ORing
FET should be selected to drop approx 50mV during conduction. Eight 3.3uF, 80V aluminum capacitors
are connected on the redundant bus.
International Rectifier
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