L6590 Datasheet PDF | STMicroelectronics

STMicroelectronics L6590

The L6590 is a monolithic switching regulator designed in BCD OFF-LINE technology, able to operate with wide range input voltage and to deliver up to 15W output power. The internal power switch is a lateral power MOSFET with a typical RDS(on) of 13Ω and a V(BR)DSS of 700V minimum. The device can work with secondary feedback and a 2.5V±2% internal reference, in addition to a high gain error amplifier, makes possible also the use in applications either with primary feedback or not isolated.

Part No.	L6590
Datasheet	L6590 Download
Manufacturer	STMicroelectronics
Description	FULLY INTEGRATED POWER SUPPLY
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APPLICATIONS

s WALL PLUG POWER SUPPLIES UP TO 15 W s AC-DC ADAPTERS s AUXILIARY POWER SUPPLIES FOR: - CRT AND LCD MONITOR (BLUE ANGEL) - DESKTOP PC/SERVER - FAX, TV, LASER PRINTER TYPICAL APPLICATION CIRCUIT

DESCRIPTION

AC line 88 to 264 Vac DRAIN 1 L6590 6, 7, 8 4 GND COMP Vcc 3 5 VFB Pout up to 15W AC line 88 to 264 Vac Primary Feedback DRAIN 1 L6590 Vcc 3 6, 7, 8 5 4 GND VFB COMP Secondary Feedback Pout up to 15W October 2000 1/23 L6590

DESCRIPTION

(continued) The MOSFET is source-grounded, thus it is possible to build flyback, boost and forward converters. The internal fixed oscillator frequency and the integrated non dissipative start-up generator minimize the external component count and power consumption. The device is equipped with a standby function that automatically reduces the oscillator frequency from 65 to 22 kHz under light load conditions to enhance efficiency (Pin < 1W @ Pout = 0.5W with wide range mains). Internal protections like cycle-by-cycle current limiting, latched output overvoltage protection, mains undervoltage protection (SMD version only) and thermal shutdown generate a 'robust' design solution.