Low-side intelligent power switches are automotive-qualified

25 January 2006 Power Electronics / Power Management

International Rectifier has introduced the IPS10xx family of low-side intelligent power switches (IPS). The devices are qualified to Q100, making them highly suitable for harsh automotive environments and any other applications that benefit from additional ruggedness and reliability.

The new IPS line includes the IPS1011R, a 13 mΩ device in a D-Pak that enables circuit designers to pack more current-handling capability into existing board layouts. In addition, the IPS devices include protection and a logic-level input and diagnostic information pin to monitor or detect faults during operation.

Intelligent power switches are used in many automotive electrical systems. In addition, the industrial market has found use for these devices in applications where the integrated protection and gate driver provides space and component savings, for example traffic signs and vending machines.

The new low-side family features all the standard protection features generally found in protected switches, namely over-current, over-temperature, ESD protection and active clamp. Protection features are required in order to help protect the electronic control unit (ECU) and the application circuit from damage if a short circuit or an overload condition occurs. IPS products can also be used as replacements for mechanical relays.

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