Green mode power switch device with integrated protection circuitry helps improve SMPS reliability

June 19, 2012 // By Paul Buckley
Fairchild Semiconductor has developed the FSL206MRx integrated Pulse-Width Modulator (PWM) controller for switch mode power supply (SMPS) designers that need space-saving, cost- effective power supply solutions with high energy efficiency, optimized system performance and improved reliability.

Part of the FPS Green Mode Fairchild power switch device family, the FSL206MRx series is designed for high-performance offline SMPS that require minimal external components. The highly integrated PWM controller with avalanche-rugged SenseFET includes an internal regulator, eliminating the need for an auxiliary bias winding and includes a built-in high-voltage startup and full-protection circuitry that saves board space and total bill of material (BOM) costs.

Optimized for efficiency and power dissipation with burst-mode operation, the FSL206MRN and FSL206MRL can reach a power loss of 150 mW with no-bias winding and 25 mW with bias winding at no-load condition when the input voltage is 265 VAC. Additionally, the FSL206MRx series is supported by Fairchild’s Power Supply WebDesigner (PSW), an easy-to-use, powerful online design tool that allows designers to further customize and fine-tune their designs without having to build a bench prototype.

Availability and Pricing

Samples of the FSL206MRx are available upon request.  Pricing for 1,000 quantity pieces are FSL206MRL (LSOP-8)  $0.56, FSL206MRN (DIP-8) $0.48, FSL206MRBN (DIP-8, Option for burst-mode level) $0.56.

For more information about the FSL206MRx integrated Pulse-Width Modulator
www.fairchildsemi.com/pf/FS/FSL206MR.html