EL SEGUNDO, Calif. November 2005— International Rectifier, IR®(NYSE: IRF), a world leader in power management technology, today introduced the IPS10xx family of low-side intelligent power switches (IPS). The devices are qualified to Q100, making them ideal for harsh automotive environments and any other applications that benefit from additional ruggedness and reliability.

The new IPS line includes the IPS1011R, a 13mOhm 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. Signals from this pin can be fed back to a microcontroller to trigger a specific sequence or restart strategy following a fault condition.

Intelligent power switches are used in many automotive electrical systems, from engine components such as transmission and gearbox solenoid drivers, to comfort, convenience and safety features like power seats, window lifters and HVAC and windshield wiper controls. 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. Although each circuit in a wiring harness could include traditional fuses or circuit breakers for protection, the IPS10x family of devices can simplify designs, reduce weight and increase reliability. IPS products can also be used as replacements for mechanical relays and in some applications, additional fuses or circuit breakers can be eliminated.

“Older technology IPS devices required larger packages for performance equivalent to these new devices. For example, the new IPS1011R in the D-Pak has 13mOhm on-resistance. Previous 13mOhm devices on the market required packaging in the larger D2Pak, a size difference of about 40%,” said Anthony Murray, International Rectifier automotive product manager. “In addition, additional diagnostic feedback is provided through the input pin,” Murray added.

Part Number	Package	RDS(on) max (mOhm)	Vclamp min.(V)	Over Current Shutdown Typical (A)	Quality Level
IPS1011	TO-220	13	36	85	Q100, MSL1
IPS1011R*	D-Pak
IPS1011S*	D2Pak
IPS1021	TO-220	25	36	45	Q100, MSL1
IPS1021R*	D-Pak
IPS1021S*	D2Pak
IPS1031	TO-220	50	36	18	Q100, MSL1
IPS1031R*	D-Pak
IPS1031S*	D2Pak
*Surface mount devices are available in tape and reel, with lead orientation denoted by a suffix at the end of part number. See data sheet for details.

Availability and Pricing The new low-side IPS devices are available immediately. Pricing begins at US $1.84 each for the IPS1011R in 10,000-unit quantities. Prices are subject to change. For information on die product availability, please contact your local International Rectifier sales representative.