Shared projects

Dimmable led driver using TPS92511 controller

by Guiguionweb.
Top
Bottom

2 layer board of 1.00x1.00 inches (25.43x25.43 mm).
Shared on August 17th, 2015 11:36.

Designed for 3 x 600mA leds(*) wired in serial.

‘'Vin’‘ supply shall be a regulated 12V.

The led controller is dimmable with a PWM signal on the ‘'Dim’‘ input (PWM frequency shall be no less than 200Hz and no more than 50 KHz).

Bottom side is a ‘'Gnd’‘ copper plan used for heatsink report.

Bill of Materials :

  • Controller = TPS92511 (Texas Instument).
  • Inductor = LPS5030-683 (Coilcraft).
  • Diode = SS16 (Vishay).
  • Capacitors = 1µF / 100V / 1210.
  • Resistor RFS = 20Ku (for 500 KHz switching frequency. /!\ Change of switching frequency impact the inductor).
  • Resistor Riadj = 3.01Ku (for 500 mA current limitation , can be adjust up to 10Ku that is equal to a 150 mA current limitation).

(*) Possibility to drive more or less leds (just take care to adjust ‘'Vin’‘ that can start from 4.5V up to 65V, and don’t forget heatsink aspect).

Order board. Download. Permalink. Embed order link.

Copy this HTML into your page to embed a link to order this shared project