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  ON Semiconductor Electronic Components Datasheet  

DN05022D Datasheet

Low-Cost LED Dimming

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DN05022D pdf
DN05022/D
Low-Cost LED Dimming
with Output Capacitor
Table 1. DEVICE DETAILS
Device
Application
NSIC2050B,
NSI50010Y
AC LED, Dimmable
Input Voltage
100−127 Vac
http://onsemi.com
DESIGN NOTE
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 “DC” 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 current rating. The
NSIC2050B Constant Current Regulators regulate the
2 × BAS21SL
Vin
current through the LEDs. The NSI50010Y limits the power
consumption of the dimmer management circuit.
For optimal performance, the gate voltage of the
MOSFET (driven by the voltage divider of the 11 kW and
1.5 kW resistors) needs to be equal to the threshold voltage
when the input voltage to the circuit is at the dimmer’s
minimum conduction angle.
Also, some dimmers may require more than 10 mA of
loading current, so the NSI50010Y may be replaced with
another CCR such as the NSIC2020B (20 mA CCR), though
power consumption will increase.
2 × NSIC2050B
100 W
2W
3.3 mF
250 V
60 V
3 × Cree MX−6S
BAV23CL
NSI50010Y
1.5 kW
1/4 W
11 kW
1/2 W
MTD6N20E
BZX84C15L
Figure 1. LED Lighting with CCRs, Dimmable Interface
© Semiconductor Components Industries, LLC, 2013
October, 2013 − Rev. 2
1
Publication Order Number:
DN05022/D


  ON Semiconductor Electronic Components Datasheet  

DN05022D Datasheet

Low-Cost LED Dimming

No Preview Available !

DN05022D pdf
Key Features
PF = 0.8
THD = 53.8%
High Light Output
Table 2. CIRCUIT DATA
VRMS(IN)
IRMS(IN)
PF
THD
P(in)
Table 3. DIMMERS TESTED
Manufacturer
Lutron
Lutron
Lutron
Pass & Seymour
DN05022/D
Dimming a Function of the Dimmer’s Range
Low BOM Cost
Dimmable
100 VRMS
112 mA
0.847
44.2%
9.53 W
Circuit Data
127 VRMS
118 mA
0.800
53.8%
12.1 W
Serial Number
500−15591A
TGCL−153PH
CTCL−153PDH
450 W – CFL/LED
ON Semiconductor and
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks,
copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. SCILLC
reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any
particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without
limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications
and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC
does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for
surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where
personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and
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any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture
of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
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2
DN05022/D


Part Number DN05022D
Description Low-Cost LED Dimming
Maker ON Semiconductor
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