powerZONE Products for the week of July 22, 2002
Advanced Power Technology Says . . .
APL502/602: High Performance Linear MOSFETs
Advanced Power Technology announced new high power linear MOSFETs, the APL502
and APL602. These high performance linear MOSFETs have up to 30% higher
FBSOA, and up to 40% higher power dissipation than previously introduced
linear MOSFET products.
The APL502 and APL602 linear MOSFETs will be available in TO-264, T-MAX, and ISOTOP (SOT-227) packages. Military screening and hermetic packaging options are also available.
Linear applications like electronic loads, linear regulators, or Class
A amplifiers, operate in the linear region and require high power dissipation
and forward biased safe operating area (FBSOA). High power, high voltage
MOSFETs optimized for switch mode applications can't provide the FBSOA and
power dissipation needed for linear applications. The APL502 and APL602
devices are specifically designed to meet the requirements of linear applications
and have 2 times the FBSOA capability of comparable switch-mode optimized
MOSFETs. In addition, the 600V linear devices provide the headroom needed
for 270Vdc aerospace applications such as Solid-State Power Controllers
(SSPCs) that replace traditional electromechanical components in power switching
and distribution systems.
analogZONE Says . . .
It is phenomenal to see such linearity characteristics in a power MOSFET. In the APL502J (I could not track down a data sheet for the APL602s) for a VGS of 5.5 V, the drain current is flat when VDS is greater than 2 V, and even with VGS at 7.5 V, the current is flat (at over 50 A) with VDS greater than about 12 V -- this in a 500-V part. These products will make terrific Class-A amplifiers with over 500 W available. Maximum transfer linearity looks like it would be best with an input swing between 6.0 V and 7.5 V. There are no direct frequency specifications quoted but from the rise/fall and delay timings my guess is that an amplifier could be designed out past 10 MHz provided the input capacitance of 7600 pF (specified at 1 MHz) could be dealt with. Output capacitance is quoted at 1280 pF -- also at 1 MHz.
The parts are also ideal for high-power regulators and electronic loads. Continuous drain current maximum is 52 A but it can be pulsed up to 208 A with an on-state maximum resistance of less than 1/10 of an ohm.
The different part numbers and capabilities reflect the same dies in different packages. The APL502s are all 500 V with 90 milliohms on-state resistance. The peak drain current is 52 A and 565 W maximum dissipation in the J package (SOT-227), and 58 A, 730 W in the L (TO-264) and B2 (T-MAX) packages. The APL602s are all 600 V with 125 milliohms on-state resistance and the equivalent ratings are 43 A, 565 W in the J package, and 49 A, 730 W in the L/B2 packages.
The parts are in production with the APL502J priced at $28.79 and the
APL602J priced at $29.63, both for 1000-piece lots.