CL88020 datasheet(13/47 Pages) MICROCHIP

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 2017 Microchip Technology Inc.

DS50002611A-page 13

1.4

CL88020 120 VAC OFFLINE LED DRIVER EVALUATION BOARD

The CL88020 120 VAC Offline LED Driver Evaluation Board is a complete solution con-

sisting of an LED Driver (ADM00766) and an LED Load Board (ADM00767) powered

directly from the 120VAC line and based on Microchip Technology’s CL88020 sequen-

tial linear LED driver. The application achieves efficient operation without using any

magnetics or conventional switching techniques and is a flexible solution that allows

users to design and to test their own LED Load solution. The included LED Load is

made with 10 LEDs. Since no high frequencies are present, it exhibits inherently low

conducted and radiated EMI without needing input filters or shielding. Because the cur-

rent through the LEDs follows the AC input voltage, PFC circuitry is also not needed.

The CL88020 is inherently compatible with both leading-edge and trailing-edge dim-

mers, with no need for special circuitry to detect and respond to them.

The LED Load is provided on a double-layer 60 mm diameter FR4 PCB (0.6 mm thick)

mounted on a pin-fin heat sink. The LED Driver PCB (ADM00766) is made on 1.6 mm

standard double-layer FR4. The kit includes an 8-wire flat cable to connect the LED

Driver Board to the LED Load, and a black anodized pin fin heat sink with double-sided

adhesive thermal tape necessary to mount the LED Load Board on it. All circuitry and

hardware is provided, along with transient protection and overtemperature protection.

Just plug into a 120 VAC outlet (50 Hz or 60 Hz) to get started.

Figure 1-2 presents the CL88020 LED Driver Evaluation Board.

FIGURE 1-2:

CL88020 LED Driver Evaluation Board Source Board (ADM00766) - Top View.

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