Date: 11/10/2008

Advanced dual PWM controller for multi-voltage systems

Microsemi Corporation launched LX1752, new dual PWM controller optimized for systems requiring multiple low voltage, high current power supplies as in set-top box, broadband modem, digital television, and data center equipment applications.
The controller's synchronous rectification provides higher power conversion efficiency necessary in addressing today's green initiatives.
When using the controller's dual outputs, PWM outputs are operated out of phase to reduce system noise, input cap capacitance and cost. For single device operation, the outputs are 180 degrees out of phase, whereas in dual implementation the outputs are 90 degrees out of phase.

Some of the key features are listed below:

1. Single supply voltage operation 4.5V to 22V
2. Independent programmable power sequencing control
3. Programmable PWM frequency range 180kHz to 1.6MHz
4. PWM outputs operation out of phase
5. Drives N-channel MOSFETs with output currents up to 13 Amps.

Pricing: $0.86 in 10K unit quantities.
RoHS compliant: Yes
Packaging: 28-pin, 4x5x1mm QFN package.

For more details visit Microsemi's website: http://www.microsemi.com