New Industry Products

IXYS Adds Support ICs for Digital Power Management

January 22, 2006 by Jeff Shepard

The new IX1858 and IX1859 gate driver/regulator ICs from IXYS Corp. are designed to provide the needed analog functions required by microcontrollers to implement offline digital power supply control, such as in power factor correction (PFC). The IXI858/859 combine a gate drive, low voltage linear regulator and a charge pump function for drive voltage generation as needed in these applications.

These features make the IXI858/859 useful for implementing microcontroller based PFC systems. The IXI858/859 can be used in combination with a depletion-mode power MOSFET such as the IXTY02N50D, which can be used to create a constant current source to provide offline standby power at lower cost with lower high line power consumption.

The IXI858 is designed to support 5.0V digital systems with an on board 5.0V linear regulator, while the IXI859 features a 3.3V linear regulator for lower voltage systems. In addition, both versions feature logic level input signal compatibility, 60mA source and 120mA sink gate drive output and a charge pump section meant to generate a 13V gate drive voltage.

The growing trend of digital power management, with the use of standard microcontroller in motor control, power supply, and PFC circuits require the interface, voltage gain and drive of the IXI858/859 for digital power management. The IXI858 and 859 were optimized for cost efficiency to support high volume applications such as dimmable ballast, non-dimmable ballast and high intensity discharge (HID) lighting systems.

The IXI858/859 are offered in a small 8-Lead SOIC surface mount package, with rated operation of –25 °C to +125 °C. This package is offered in tubes quantities of 100 or tape and reel quantities of 2500.