参数资料
型号: AUIR33401STRL
厂商: International Rectifier
文件页数: 3/18页
文件大小: 0K
描述: IC SW IPS 1CH HIGH SIDE D2PAK-7
标准包装: 800
类型: 高端
输入类型: 非反相
输出数: 1
导通状态电阻: 3 毫欧
电流 - 输出 / 通道: 33A
电流 - 峰值输出: 50A
电源电压: 2.8 V ~ 3 V
工作温度: -40°C ~ 150°C
安装类型: 表面贴装
封装/外壳: TO-263-7,D²Pak(6 引线+接片)
供应商设备封装: D2PAK(7-Lead)
包装: 带卷 (TR)

AUIR33401S
Design: basic schematic with micro-processor
The basic circuit is giving all the functionality to drive a motor up to 33A DC. R Ifbk set both the level current shutdown and
the current feedback reading scale. The IN signal provides to the AUIR33401S the Pwm duty cycle. D1 is the free
wheeling diode during PWM operation. As the equivalent circuit between Vbat and – Mot is 2 diode in series (the body
diode of the AUIR33401S and D1), the system requires T1, D2, R1 and R2 to sustain the reverse battery.
Recommended connection with reverse battery protection 1 :
+Bat
C1
100nF
C3
C4
I/O
I/O
IN
Diag
R IN
R pdiag
IN
Vcc
CBoot
Cboot
100nF
Vbat
AUIR33401S
Output
+ Mot
A/D
Ifbk
R pIfbk
Ifbk
Gnd
D1
MBR
3045CT
R2
10k
Current shutdown
C2
- Mot
Gnd
programming resistor
R Ifbk
Gnd
1nF
T1
IRF140
D2
12V
GND
Figure 1: Recommended schematic
This is the recommended schematic with an optional reverse battery 1 . The recommended load is an inductive load. This
part may not be suitable for application conditions other than those specified above. Please contact IR’s Automotive
Technical support for further details on other applications requirement.
DC to 20 kHz operation
The AUIR33401S is able to operate in DC and high speed switching operation. To be able to switch at 20 kHz, a
bootstrap capacitor is used externally. The device integrates the power supply of the bootstrap capacitor. In DC operation,
when the capacitor is discharged, the charge pump maintains the device ON.
1
The reverse battery is optional. Remove T1, D2, R2 and connect –Mot to Gnd to remove the features.
3
? 2011 International Rectifier
March 5, 2013
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