AUIR33401STRL International Rectifier, AUIR33401STRL Datasheet - Page 3

• Manufacturer Part Number: AUIR33401STRL
• Description: T&R / Automotive Grade Intelligent Power Switch 1 Channel High Side Driver In A D2-Pak 7-Lead Package
• Manufacturer: International Rectifier
• Series: -r
• Type: High Sider

Specifications of AUIR33401STRL

• Input Type: Non-Inverting
• Number Of Outputs: 1
• On-state Resistance: 3 mOhm
• Current - Output / Channel: 33A
• Current - Peak Output: 50A
• Voltage - Supply: 2.8 V ~ 3 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: TO-263-7, D²Pak (6 leads + Tab)
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Design: basic schematic with micro-processor
The basic circuit is giving all the functionality to drive a motor up to 33A DC. R
the current feedback reading scale. The IN signal provides the Pwm duty cycle to the AUIR33401S. 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
This is the recommended schematic with an optional reverse battery
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.
Gnd
A/D
I/O
I/O
Gnd
Diag
Ifbk
IN
programming resistor
Current shutdown
ww.irf.com
R
R
R
pIfbk
pdiag
IN
R
Ifbk
Figure 1: Recommended schematic
C1
100nF
C2
1nF
IN
Ifbk
AUIR33401S
+Bat
Vcc
© 2007 International Rectifier
1
. The recommended load is an inductive load. This
Gnd
C3
Output
Ifbk
CBoot
set both the level current shutdown and
C4
IRF140
Cboot
100nF
D1
MBR
3045CT
1
AUIR33401S
T1
:
R2
10k
D2
12V
3
+ Mot
- Mot
Vbat
GND