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The consumer sector includes both home appliances and entertainment products. Types of components manufactured by Vishay are used in home appliances such as air conditioners, washing machines and dryers, refrigerators and freezers, and robotic vacuum cleaners and lawn mowers. They also are used in smartwatches, fitness bands, media streaming devices, TVs, e-book readers, game consoles, smartglasses, virtual reality systems, and more. As an example, Vishay components are used in applications in LCD TVs including power conversion, EMI filtering, rectification, power factor correction, analog/digital signal switching, audio amplification, interface protection, infrared receiving, and gesture recognition.
Consumer

LCD Television

Vishay Components Used

  • Power MOSFETS
  • Controller Power ICs
  • Optocouplers
  • Schottky Diodes / Rectifiers
  • Ultrafast Rectifiers
  • TVS
  • Bridge Rectifiers
  • Zener Diodes
  • Switching Diodes
  • Aluminum Electrolytic Capacitors
  • High-Voltage Resistors
  • NTC and PTC Thermistors
  • Inductors / EMI Filters
  • Secondary Protection Fuses
  • IR Receivers
  • Ambient Sensors
  • LDOs
  • Analog Switches
EMI-Filter Reverse Polarity Protection SMPS Buck Converter Transient Protection ESD-Protection Filter Pull-Up / Down Resistor Position Sensor DC Link Current Sensor EMI-Filter Low Side Current Sensor Motor Switch Reverse Polarity Protection Transient Protection Position Sensor Temperature Sensor
EMI Filter Reverse Polarity Protection Security Switch Transient Protection SMPS Buck Converter EMI Filter Reverse Polarity Protection Security Switch Transient Protection Buffer Capacitor High Side Current Sensor High Side Switch Low Side Current Sensor Low Side Switch Storage Inductor
EMI Filter Reverse Polarity Protection Transient Protection SMPS Converter Low and High Side Switch High Side Switch Low Side Switch Buffer Capacitor Storage Inductor High Side Current Sensor LED Light Sensor Current Sensor
SMPS Converter EMI Filter Reverse Polarity Protection Transient Protection Filter ESD-Protection Pull-Up / Down Resistor Level Shift Motor Switch DC Link Current Sensor Low Side Current Sensor EMI Filter Reverse Polarity Protection Transient Protection BLDC-Motor WiFi GPS Receiver Proximity Sensor
SMPS Converter EMI Filter Reverse Polarity Protection Transient Protection ESD-Protection Filter Pull-Up / Down Resistor Buck Boost Converter EMI Filter Reverse Polarity Protection Transient Protection RGBW Sensor Blue Light Sensor Position Sensor Current Sensor
SMPS Buck Converter Reverse Polarity Protection Transient Protection Optical Smoke Detection Temperature Sensing Amplification ESD Protection Audio Amplifier Flashlight Wireless Ethernet

LCD TV design is separated into three segments: Main Circuit Board, Backlight Inverter, and Power Supply. The Main Circuit Board segment involves hardware device and power sources. For power sources, using a switching mode is an excellent way to improve converter efficiency. High current is its key feature. Power sources that use this technology include system power, power switching, and Class D audio amplification. Low-dropout linear power is another solution for converter efficiency. Its main benefits are low prices and simple circuitry. Hardware can be regarded as a non-power segment. Type of hardware includes remote controls, sensors, and interface protection devices. Some of these need similar functions, such as ESD protection, current limiting, and load switching. The Backlight Inverter segment includes lighting igniters, protection devices, and MOSFET drivers. For lighting igniters, high voltage is a key design concern. Ceramic disc capacitors can meet 6 kV and provide good decoupling. The Power Supply segment involves open-frame switching mode power supplies. Components for primary AC applications include EMI filters, bridge rectifiers, buck capacitors, and PFC rectifiers. The most important design concept is PFC, which involves efficiency improvement. When a PFC rectifier performs well, the power supply can be efficient at a light current load. Regarding secondary side design, the output rectifier is the most important device, especially for multi-output of power supplies. The Trench MOS Schottky rectifier features both high current capabilities and good forward voltage performance at high ambient temperatures. Different solutions are based on different specifications.

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