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SL13-E3-61T データシート(PDF) 2 Page - Texas Instruments

部品番号 SL13-E3-61T
部品情報  A 0.9-A Constant Current Supply with PFC for 100-W LED
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メーカー  TI1 [Texas Instruments]
ホームページ  http://www.ti.com
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SL13-E3-61T データシート(HTML) 2 Page - Texas Instruments

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1
Introduction
2
Description
2.1
Typical Applications
2.2
Features
User's Guide
SLUU355A – March 2009 – Revised June 2009
A 0.9-A Constant Current Supply with PFC for 100-W LED
Lighting Applications
The UCC28810EVM-002 is a constant current non-isolated power supply for LED lighting applications. It
will convert universal mains (90 VRMS to 264 VRMS) to a 0.9-A constant current into a 100-W load. This
evaluation module will allow the customer evaluate the UCC28810/11 in a typical LED lighting application.
The evaluation module uses a two stage approach to controlling the output current.
The first stage is a transition mode PFC circuit. This ensures the design meets the harmonic current or
power factor requirements set out by various standards, such as EN61000-3-2. The PFC circuit converts
the AC input to a regulated DC voltage. This DC voltage can be configured in one of two ways. The
default configuration of the module is that of a boost follower type PFC. The boost follower PFC is where
the PFC regulated output DC voltage tracks the AC input peak voltage. The second configuration requires
removing some components and changing a resistor value see below for more details. This second
configuration removes the tracking element of the PFC circuit. The PFC DC output voltage will then be
regulated to a fixed value in the region of 396 VDC.
The second stage also uses transition mode but is configured as a buck converter. It converts the PFC
output voltage to a fixed constant current. This circuit is capable of supplying 0.9 A into a 100-W load. It
also accepts PWM dimming inputs. Alternatively the user can use the PWM circuit on the module to see
the dimming function.
This module will work with most high brightness LED’s (HB-LED) that operate with 0.9 A and a total string
voltage drop of between 55 V and 110 V.
• AC Input General Lighting Applications Using HB-LED’s
• Industrial, Commercial and Residential Lighting Fixtures
• Outdoor Lighting: Street, Roadway, Parking, Construction and Ornamental LED Lighting Fixtures
• 90 VRMS to 264 VRMS operation
• Boost Follower or Fixed Output PFC Stage
• PFC Disable
• Output Current Disable
• External or Internal PWM Dimming
A 0.9-A Constant Current Supply with PFC for 100-W LED Lighting Applications
2
SLUU355A – March 2009 – Revised June 2009
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