Part Number
|
DN05022 |
Manufacturer
|
ON Semiconductor |
Description
|
Low-Cost LED Dimming |
Published
|
Aug 5, 2014 |
Detailed Description
|
DN05022/D Low-Cost LED Dimming with Output Capacitor
http://onsemi.com
DESIGN NOTE
Table 1. DEVICE DETAILS
Device NSIC2...
|
Datasheet
|
DN05022
|
Overview
DN05022/D Low-Cost LED Dimming with Output Capacitor
http://onsemi.
com
DESIGN NOTE
Table 1.
DEVICE DETAILS
Device NSIC2050B, NSI50010Y Application AC LED, Dimmable Input Voltage 100ā127 Vac Topology Bridge + CCR and PWM Sensing I/O Isolation No
Circuit Description
This circuit can be thought of as having two separate portions.
There is an LED management portion and a dimmer management/PWM Signal portion.
The LED management portion charges the output capacitor to run the LEDs in a āDCā state.
The dimmer management portion provides loading current for the TRIAC in a dimmer and provides a gate voltage to the series-pass MOSFET.
The gate drive of the series MOSFET PWMs the LEDs at their peak ...
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