Controller archives - Page 15 of 500

Part Number: CM6800TX

Function: EPA/85+ PFC+PWM COMBO CONTROLLER

Package: DIP, SOP 16 Pin Type

Manufacturer: Champion Microelectronic ( http://www.championmicro.com.tw )

Images:

CM6800TX pdf controller

Description

The CM6800TX is a turbo-speed PFC and a Green PWM controller. It is designed to further increase power supply efficiency while using the relatively lower 380V Bulk Capacitor value.

1. Hold Up time can be increased ~ 30% from the existing 6800 power supply

2. Turbo Speed PFC may reduce 420 Bulk Capacitor size

3. 420V bulk capacitor value may be reduced and PFC Boost Capacitor ripple current can be reduced

4. No Load Consumption can be reduced 290mW at 270VAC

5. Better Power Factor and Better THD

6. Clean Digital PFC Brown Out

7. PWM transformer size can be smaller

Features

1. 23V Bi-CMOS process

2. Designed for EPA/85+ efficiency

3. Digitized Exactly 50% Maximum PWM Duty Cycle

4. Low start-up current (55uA typ.)

5. Low operating current (2.5mA typ.)

6. 16.5V VCC shunt regulator

7. Leading Edge Blanking for both PFC and PWM

Pinout

CM6800TX pinout datasheet

1. Power Factor is a measure of how effectively electrical power is being converted into useful work output in a circuit. In many electrical systems, the power factor can be less than ideal due to the presence of reactive power, which does not contribute to useful work but still draws current.

2. A PWM controller, or Pulse Width Modulation controller, is a device or circuit that generates PWM signals. PWM is a method for controlling the average voltage or current delivered to a load by rapidly switching a power source on and off. By varying the width of the pulses (the duty cycle), the average output voltage or current can be controlled.

Applications:

1. Desktop PC Power Supply

2. Internet Server Power Supply

3. LCD Power Supply

4. DC Motor Power Supply

5. Monitor Power Supply

6. Telecom System Power Supply

CM6800TX PDF Datasheet

Description

The WS2811 is 3 output channels special for LED driver circuit. It internal include intelligent digital port data latch and signal reshaping amplification drive circuit.Also include a precision internal oscillator and a 12V voltage programmable constant current output drive. In the purpose of reduce power supply ripple, the 3 output channels designed to delay turn-on function.

IC use single NZR communication mode.After the chip power-on reset, the DIN port receivedata from controller, the first IC collect initial 24bit data then sent to the internal data latch, theother data which reshaping by the internal signal reshaping amplification circuit sent to the next cascade IC through the DO port. After transmission for each chip,the signal to reduce 24bit. IC adopt auto reshaping transmit technology, making the chip cascade number is not limited the signal transmission, only depend on the speed of signal transmission.

2 page

A Constant Current LED Driver IC is an integrated circuit designed to regulate and control the current flowing through Light Emitting Diodes (LEDs) in a manner that keeps the LED current constant, despite variations in input voltage or changes in temperature. Constant current drivers are essential for ensuring stable brightness and consistent performance of LEDs, as LEDs are sensitive to variations in current.

Features :

1. Output port compression 12V.

2. Built in stabilivolt, Only add a resistance to IC VDD feet when under 24V power supply.

3. Gray level 256 can be adjusted and scan frequency not less than 400Hz/s.

4. Built in signal reshaping circuit,after wave reshaping to the next driver, ensure wave-form distortion not accumulate.

WS2811 PDF Datasheet

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