ECQ-E2224JF(2012) データシートの表示（PDF） - Infineon Technologies

部品番号

コンポーネント説明

メーカー

ECQ-E2224JF
(Rev.:2012)

Phase Cut Dimmable Non-isolated Buck Converter for LED Retrofit Bulb with ICL8002G & CoolMOS™ 600V C6

Infineon Technologies 

AN-EVALLED-ICL8002G-B2

Phase Cut Dimmable Non-isolated Buck Converter for LED Retrofit Bulb with ICL8002G & CoolMOS™ 600V C6

9

Setup and Results

ATTENTION: LETHAL VOLTAGES ARE PRESENT ON THIS DEMO BOARD. DO NOT OPERATE

THE BOARD UNLESS YOU ARE TRAINED TO HANDLE HIGH VOLTAGE CIRCUITS. DO NOT

LEAVE THIS BOARD UNATTENDED WHILE IT IS POWERED UP.

9.1

Input / Output

9.1.1 Input

Connect AC line (90V-132V) to the red (Hot) and black (Neutral) wires. For dimming operation the phase cut

dimmer shall be connected to the input according to the dimmer’s instructions by its manufacturer.

9.1.2 Output

Connect LED module (30V~38V/300mA) to the yellow (positive) and white (negative) wires from the demo board.

Attention: As this is a NON-isolated design, high voltage exists at the output! An isolated AC source at the

input is advised to be used during evaluation of this demo board.

9.2

Power Up

The ICL8002G integrates a start-up cell to charge up the Vcc capacitor until it starts up successfully. Figure 4

demonstrates the start-up waveforms from mains voltage switch-on to light output.

Figure 4 Start-up waveforms: Rectified mains input voltage (C1, yellow), Controller Vcc (C2,

red), output voltage (C3, blue), and output current (C4, green)

9.3

Operation Waveforms

The ICL8002G is a quasi-resonant PWM controller and operates the buck converter in critical conduction mode.

Through zero crossing detection via ZCV pin, the ICL8002G turns on MOSFET when its drain voltage drops to the

Application Note

9

Version 1.1, 2012-08-03

Share Link: