Direct Type/ Local Dimming (Conventional TV power + Boost + LED driver) PMP4298 (ACTIVE)

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Description

In this topology, the UCC28051 is a boost transition mode (TM) power factor corrector (PFC), which can rectify an AC input line voltage to 380V DC; the resonant LLC stage UCC25600 regulates the output to 24V/2A for an audio amplifier with feedback to the LLC controller, and 48V for the LED driver input. The flyback with UCC28610 in parallel generates 5V/3A for the system board and 5V/1A for standby power. In the LED driver stage, the 48V input voltage requires another front end boost stage to boost the output voltage to 80V, which connects to the eight-channel TLC5960 with 20LEDs at 120mA per string.This technique is the most common type of current LED backlight; the LLC design is easily implemented. The intelligent headroom voltage monitor (oriHVM™) automatically minimizes the power loss caused by the LED forward voltage change. Only a single additional resistor regulates the boost dc-dc output voltage.


  




TI Devices (8)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM393  Dual differential comparator, commercial grade  Amplifiers  Sample & Buy Not Available
LM393-MIL  Dual Differential Comparator  Analog and Mixed-Signal  Not Available Not Available
TL431  Adjustable precision shunt regulator  Voltage references  Sample & Buy Not Available
TLC5960  8-Channel LED Driver Controller with Integrated Intelligent Thermal Controller  LED drivers  Sample & Buy Not Available
TPS40210  4.5~52V Wide Input Range Boost/SEPIC/Flyback DC-DC Controller  Step-up (boost)  Sample & Buy View Design Kits & Evaluation Modules
UCC25600  8-pin high-performance resonant mode LLC controller  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules
UCC28051  PFC Controller for low to medium power applications requiring compliance with IEC 61000-3-2  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules
UCC28610  12-65W Green-mode Flyback Power Supply Controller  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM393 Download Download
Download Download
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Download -
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TL431 Download Download
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Download -
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Download -
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TLC5960 Download -
TPS40210 Download Download
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UCC25600 Download Download
UCC28051 Download Download
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UCC28610 Download Download
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Technical Documents
Application notes (1)
Title Type Size (KB) Date
PDF 758 15 Jul 2011
User guides (1)
Title Type Size (KB) Date
PDF 262 15 Nov 2010
Design files (2)
Title Type Size (KB) Date
PDF 267 15 Nov 2010
PDF 139 15 Nov 2010

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