Diodes Incorporated’s LED Driver Enables High Power Factor Retrofit LED Lamps

8th October 2013
Posted By : Jacqueline Regnier
Diodes Incorporated’s LED Driver Enables High Power Factor  Retrofit LED Lamps

Diodes Incorporated has announced the AP1684, a power factor-corrected AC-DC LED driver suiting a variety of offline LED lamp types, including E26, GU10, PAR and T8.  Using pulse-frequency modulation technology and operating in boundary-conduction mode, this device provides tight current regulation to an accuracy of ±2%, while achieving a power factor of .97 and THD of less than 20%.

Helping to significantly reduce circuit BOM cost, this primary-side driver removes the need for opto-coupler, secondary-side control and loop-compensation circuitry.  Driving an external bipolar junction transistor, the AP1684 requires only a small external component count and coupled with its SO8 packaging, enables lamp designers to reduce PCB footprint, increase power density and raise overall product reliability.

The driver keeps start-up and operating currents low and uses dynamic base driver control and valley-mode switching to minimise transition loss and achieve high efficiency, typically 93%.  The AP1684’s circuit protection features are comprehensive and include over-voltage, short-circuit and over-temperature facilities.

The AP1684 high power-factor LED driver from Diodes Incorporated is priced at $0.18USD each in quantities of up to 50k.


You must be logged in to comment

Write a comment

No comments




Sign up to view our publications

Sign up

Sign up to view our downloads

Sign up

Sensor+Test 2019
25th June 2019
Germany Nürnberg Messe
The Digital Healthcare Show 2019
26th June 2019
United Kingdom EXCEL, London
unbound london 2019
17th July 2019
United Kingdom Old Truman Brewery, London
DSEI 2019
10th September 2019
United Kingdom EXCEL, London
EMO Hannover 2019
16th September 2019
Germany Hannover