Infineon launches light switch for LED and ordinary bulbs

Infineon is suitable for LED and ordinary light bulb lamp switch family of products; 5 channel high side switch with intelligent circuit protection and diagnosis function in October 25, 2006, the United States of Detroit Munich / Germany - Infineon Technologies AG (NYSE/FSE: IFX) today announced the launch of a new five channel high side smart power switch product family, used to control the automobile interior and exterior lighting systems standard lamp and LED lamp, so as to provide a flexible solution for manufacturers, LED lamps to replace the ordinary light bulb for the trend to be. BTS 55XX SPOC (SPI power controller) series will N channel MOSFET and has a control logic and circuit protection characteristics of the charge pump unit is integrated in a single system in package (SiP) design. These functions will be integrated into the standard JEDEC P-DSO-36 package, not only to improve the ability of fault diagnosis, while reducing the number of devices, reduce the lighting system electronic control unit (ECU) of the design cost and size. "Infineon is focused on providing IC and intelligent power module for customers, innovation in the field of vehicle safety and transmission system to help customers," Infineon Technologies Corporation of America automotive, industrial and diversified electronic market department general manager Christopher Cook said, "with SPOC product family, our technology the integrated expertise in chip design, digital and intelligent power module will be more intelligent, more complex lighting control, and can reduce the cost of ECU solutions for the number of components and systems." SPI brings more diagnostic capabilities and is simpler to design for each SPOC component that has the SPI (serial peripheral interface) for control and diagnostics and the common parallel input pins for direct PWM operation. In addition, BTS 55XX also contains current sensing signal for each channel, using internal multiplexing to reduce the number of microcontroller I/O pin. BTS 55XX also with self adjusting the current limit value for power limiting short circuit period. SPOC can be used to distinguish between open circuit load and other faults in the ON state (such as ultra - moderate overload). Compared with the typical state pins on the discrete smart power driver, the fault diagnosis is mainly based on the fault signal of each channel read on the SPI. Latch fault signal does not require the software to read the timing coordination signal, which is very helpful for PWM applications. No matter how many SPOC devices, all fault diagnosis can be through a single microcontroller A/D pin and SPI lines, and with other SPI based devices (such as system for chip based car networking sharing). In this way, the smart power driver is connected to the microcontroller I/O port can be reduced, simplifying the design of hardware and software, while reducing the difficulty of PCB layout. These advantages can be further enhanced by using a variety of SPOC devices in ECU design. Suitable for LED lamps and ordinary light bulbs for lighting applications, OEM manufacturers are replacing the ordinary bulb LED, which is smaller, lighter, and easy to integrate and manufacture. The LED higher than ordinary light bulbs, the efficiency is more reliable, the designer can improve power management efficiency, and will greatly reduce the owner of the vehicle is used during lamp failure situation. To provide a general platform for highly integrated ECU Infineon SPOC family can support a variety of flexible and LED configuration for the design of the light bulb. SPOC devices (not including BTS 5566GX) can be configured as a light bulb or LED mode, use the same hardware drive two different load types. Mode selection changed on state resistance (R DS/on), current limit switch and conversion rate, but the two kinds of load mode switch, protection and accuracy of the diagnosis of the optimal treatment. This allows ordinary ECU can be easily shared between different models using ordinary bulbs or LED. Fault protection function of BTS 5590GX with integrated watchdog circuit, fault protection function. The watchdog is supported by an advanced state machine via SPI, but the county is secure "self protection (limp-home)" function. In the event of a ECU fault or short circuit, the watchdog will be activated, and the SPOC device can be configured so that each channel can be known as the default operating state. Each SPOC device has a dedicated input pins, used to receive from the BTS 5590GX (or any other device with Watchdog) self protective signal. This is particularly important in safety critical applications such as vehicle exterior lighting. If the fault occurred in the evening, the system can start the "self protection" mode, in this mode, you can open all the side lights, turn lights and tail lights, the vehicle can be seen, to improve the safety of drivers and passengers.