Date: 15/01/2009

Half-Bridge MOSFET in ISOPLUS i4-PAC packaging providing 25000Vrms isolation

IXYS Corporation has released the new half-bridge MOSFET modules that are available in IXYS' proprietary ISOPLUS i4-PACTM packaging. These modules provide better thermal performance and temperature cycling capabilities. Designers who seek isolated half-bridge configurations integrated into one single package avoiding the use of multiple discrete devices can opt these devices.

The i4-PACTM is a UL recognized isolated package incorporating a direct copper bond (DCB) ceramic isolator which provides 2500Vrms isolation. In comparison with conventional package housings, the ISOPLUS i4-PAC yielded a 45% decrease in thermal resistance. These modules feature low inductive current paths, as dice are located within one package. An additional feature includes a reduction in EMI emissions due to the low coupling capacitance between die and heat sink.

These new modules are currently available in two configurations. One configuration (part number prefix denoted as FMP) combines carefully selected P-Channel and N-Channel MOSFETs configured in a phase-leg or half-bridge topology with a common drain arrangement. An added benefit from this configuration is the elimination of gate drive circuitry normally required in driving an N-Channel MOSFET on the high-side of a phase leg. The other configuration (part number prefix denoted as FMM) is comprised of two N-Channel MOSFETs situated on both the low and high side of the phase leg.
The Dual N-Channel FMM modules are capable of accommodating drain to source breakdown
voltages of 200V, 250V, 500V and 600V with drain current values from 12 amperes to 33 amperes. The P&N FMP modules are available to support applications requiring drain to source breakdown voltages of 100V, 150V and 200V with drain current ratings from 17 amperes to 54 amperes.

The targeted applications include DC/AC motor drives, uninterruptible power supplies, switch mode power supplies, solar/wind power inverters, synchronous rectifiers, industrial battery chargers, Class AB audio amplifiers and multi-phase DC to DC converters.

Initial device offerings include part numbers: FMM60-02TF, FMM50-025TF, FMM22-05PF, FMM22-06PF, FMP26-02P, FMP36-015P, and FMP76-010T.