AUIR33401S ,Automotive Grade Intelligent Power Switch 1 Channel High Side Driver in a D2-Pak 7-Lead Packagefeatures simplify the design of the DC motor drive with a microcontroller. The Mosfet switches the ..
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AUIR33401S
Automotive Grade Intelligent Power Switch 1 Channel High Side Driver in a D2-Pak 7-Lead Package
features simplify the design of the DC motor drive with a microcontroller. The Mosfet switches the power load proportionally to the input signal duty cycle at the same frequency and provides a current feedback on the Ifbk pin. The over-current shutdown is programmable from 10A to 33A. Over-current and over-temperature latch OFF the power switch, providing a digital diagnostic status on the input pin. In sleep mode, the device consumes less than 10uA. Further integrated protections such as ESD, GND and Cboot disconnect protection guarantee safe operation in harsh conditions of the automotive environment. 1 © 2011 International Rectifier March 5, 2013 Downloaded from: http://www.ic-phoenix.com/stock/ AUIR33401S † Qualification Information Automotive††(per AEC-Q100 ) Qualification Level Comments: This family of ICs has passed an Automotive qualification. IR’s Industrial and Consumer qualification level is granted by extension of the higher Automotive level. MSL1, 260°C Moisture Sensitivity Level 7L-DDPAK (per IPC/JEDEC J-STD-020) Class M3 Machine Model (per AEC-Q-100-003)Class H2 Human Body Model ESD ( ) per AEC-Q-100-002Class C5 Charged Device Model (per AEC-Q-100-011)RoHS Compliant Yes † Qualification standards can be found at International Rectifier’s web site http:/// †† Exceptions to AEC-Q100 requirements are noted in the qualification report. 2 © 2011 International Rectifier March 5, 2013 Downloaded from: http://www.ic-phoenix.com/stock/ AUIR33401S Design: basic schematic with micro-processor The basic circuit is giving all the functionality to drive a motor up to 33A DC. R set both the level current shutdown and Ifbkthe 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. 1Recommended connection with reverse battery protection : +Bat C3 C4 C1 100nF IN Vcc I/O R CBoot IN Cboot Diag IN 100nF R Vbat I/O pdiag Output + Mot AUIR33401S D1 Ifbk R2 R pIfbk Ifbk A/D MBR Gnd 10k 3045CT - Mot C2 Current shutdown 1nF GND programming resistor T1 RIfbk IRF140Gnd D2 Gnd 12V Figure 1: Recommended schematic 1This is the recommended schematic with an optional reverse battery . 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
