Применения > > Direct Type/ Local Dimming (Conventional TV power + Boost + LED driver)

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

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 (oriHVMв„ў) automatically minimizes the power loss caused by the LED forward voltage change. Only a single additional resistor regulates the boost dc-dc output voltage.


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Спецификация (BOM)

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

Используемые компоненты

Производитель: Texas Instruments
LM393ADR LM393ADR Цена, руб. Срок поставки Укажите

Dual Differential Comparator 8-SOIC 0 to 70 ИНФО
10,00 r
от 160 шт. 8,80 q
от 440 шт. 7,50 q
от 960 шт. 6,90 q
На складе: 4761 шт.
LM393D LM393D Цена, руб. Срок поставки Укажите

11,50 r
от 150 шт. 10,00 q
от 375 шт. 8,70 q
от 825 шт. 8,00 q
На складе: 1330 шт.
LM393DR LM393DR Цена, руб. Срок поставки Укажите

Voltage Comparator IC; No. of Comparators:2; Comparator Type:General Purpose; Response Time:0.3чs; Output Type:TTL/MOS/CMOS; Supply Current:0.8mA; Supply Voltage Min:2V; Supply Voltage Max:36V; Termination Type:SMD PDF ИНФО
8,50 r
от 180 шт. 7,50 q
от 520 шт. 6,40 q
от 1130 шт. 5,90 q
На складе: 6485 шт.
LM393P LM393P Цена, руб. Срок поставки Укажите

COMPARATOR DUAL, DIP8, 393; Comparators, No. of:2; Comparator Type:Differential; Time, Response:0.3чs; Output Type:TTL / MOS / CMOS Compatible; Current, Supply:0.8mA; Voltage, Supply Min:2V; Voltage, Supply Max:36V; Termination Type:Through Hole; Case Style:DIP; Pins, No. of:8; Temperature, Operating Range:0°C to +70°C; Base Number:393; Channels, No. of:2; Comparator Features:Open Collector, Open Drain ; IC Generic Number:393; Logic Function Number:393; Temp, Op. Max:70°C; Temp, Op. Min:0°C; Temperature Range, IC:Commercial PDF ИНФО
12,00 r
от 150 шт. 10,50 q
от 350 шт. 9,10 q
от 800 шт. 8,40 q
На складе: 621 шт.

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