Diodes High Power Factor Boost LED Driver Effectively Reduces the Occupied Area of Dimmable MR16 LED

Diodes incorporated has launched a DC-DC converter al8812 with up, down and inverter functions. This device integrates 60V / 3.6a NMOS channel to meet the basic functions of DC-DC controller. It adopts compact dual band heat dissipation pad dfn6040-12 package, which can reduce the waveform factor of MR16 LED lamp circuit.

The occupied area of al8812 is 6mm x 4mm, and the height from the plate is only 0.6mm. The converter includes a temperature compensated reference, a comparator, a duty cycle controlled oscillator equipped with an active current limiting circuit, a driver, and a high current output switch.

The input voltage range of al8812 is 3V to 20V, and the output voltage can be adjusted up to 60V. The new device works in a wide power supply voltage range and is suitable for medium voltage LED, 12VAC lighting applications and dimmable MR16 LED lamps.

The off current of this converter is generally less than 0.01 µ a, and the maximum output switching current is 3.6a. It has an accurate reference with a tolerance of 2%, which can provide very accurate voltage and current control.

Diodes company combines al8812 with constant current step-down converter al8807a to bring a two-stage reference design for dimmable MR16 LED lamp, so as to provide good transformer compatibility and low current ripple at a very affordable bill of materials cost.

Introduction to diodes

Diodes incorporated is a S & P smallcap 600 index and Russell 3000 index company. It is a leading manufacturer and supplier of discrete, logic and analog semiconductor products in the world, serving different markets such as consumer electronics, computers, communications, industry and automobile. Diodes' products include diodes, rectifiers, transistors, MOSFETs, protection devices, special function arrays, single gate logic, amplifiers and comparators, Hall effect and temperature sensors, power management devices including LED drivers, AC-DC converters and controllers, DC-DC switches and linear regulators, voltage references, USB power switches, load switches Special functional devices such as voltage monitor and motor controller.

The headquarters and U.S. sales office of diodes are located in Plano, Texas, with design, marketing and engineering centers in Plano, San Jose, California, Taipei, Manchester, UK and Neuhaus, Germany; There are wafer manufacturing plants in Kansas City, Missouri and Manchester, and two in Shanghai; Set up an assembly and testing plant in Shanghai, Chengdu, Taipei and Neuhaus, Germany; It has engineering, sales, warehousing and logistics offices in Fort Worth, Texas, Taipei, Hong Kong, Manchester, Shanghai, Shenzhen, Chengnan and Suwon, South Korea, Tokyo and Munich; And has sales and support offices all over the world.

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