40-V to 100-V MOSFETs for high-current motor control and power designs

March 26, 2014 // By Graham Prophet
Texas Instruments’ latest NexFET mid-voltage power MOSFETs include lowest on-resistance 80-V and 100-V devices in TO-220 packages.

14 power MOSFETs in TO-220 and SON packages support input voltages from 40 to 100V. The high-efficiency NexFETs include 40-V, 60-V, 80-V and 100-V N-channel devices that provide excellent thermal performance to a wide range of high-current motor control and power applications.

Two of the new 80-V and 100-V NexFET devices claim the industry's lowest on-resistance in a TO-220 package without sacrificing high gate charge – giving designers more power conversion efficiency at higher currents. The CSD19506 supports 2.0 m Ω of Rds(on) at an input voltage of up to 80V, while the CSD19536 achieves 2.3 m Ω of Rds(on) at a 100-V input. Both products feature plastic packages with high avalanche capability to support high-stress motor control applications. Designers can select the new products and simulate their power designs by accessing TI's WEBENCH online design tool.

TI also introduced several evaluation modules based on its 60-V NexFET products;

Stepper motor pre-driver: the DRV8711EVM evaluation module is based on the DRV8711 stepper motor controller paired with NexFET devices to drive a high-current bipolar stepper motor or two brushed DC motors.

Motor Drive BoosterPack: the BOOSTXL-DRV8301 kit is a 10-A, 3-phase brushless DC drive stage based on the DRV8301 pre-driver -- designed for those learning about sensorless brushless control techniques and drive stage design.

Digital power: UCD3138PSFBEVM-027 allows power developers to design a digitally controlled, phase-shifted off-line, 12-V, 360-W power converter application.

Point-of-load control: the TPS40170EVM-597 evaluation board features TI's TPS40170 synchronous step-down controllers with two NexFET devices.

The CSD19506KCS and CSD19536KCS N-channel devices each come in a 3-pin, standard TO-220 package for $2.30 (1,000). TI also offers 40-V, 60-V, 80-V and 100-V FETs in lead-free 5 x 6-mm SON packages.

A video overview of 80-V and 100-V NexFET solutions is here.

TI; http://www.ti.com/mvnexfet-pr