Allicdata Part #: | SG6903SZ-ND |
Manufacturer Part#: |
SG6903SZ |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | ON Semiconductor |
Short Description: | IC PFC CONTROLLER 16SOIC |
More Detail: | PFC IC 16-SOP |
DataSheet: | SG6903SZ Datasheet/PDF |
Quantity: | 1000 |
1 +: | 0.00000 |
Series: | -- |
Packaging: | Tape & Reel (TR) |
Part Status: | Obsolete |
Mode: | -- |
Frequency - Switching: | -- |
Voltage - Supply: | -- |
Operating Temperature: | -- |
Mounting Type: | Surface Mount |
Package / Case: | 16-SOIC (0.154", 3.90mm Width) |
Supplier Device Package: | 16-SOP |
Base Part Number: | SG6903 |
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SG6903SZ is a high performance PFC (Power Factor Correction) controller that is designed for switched-mode power supplies (SMPS) applications. This IC provides all the necessary control functions, from the input to the output, for a DC/DC buck converter to achieve a higher conversion efficiency. It is a fully programmable device that can be programmed for a target output voltage, boost current, peak current limit, switching frequency, phase shift and other parameters.
The SG6903SZ PFC controller’s input voltage can range from a minimum of 90V to a maximum of 470V, while it can operate at temperatures between -40 to 150 °C. This chip also includes over temperature, over current, and over power protection. It also includes three adjustable soft-start timing parameters, along with a line under voltage lockout setting. The output voltage of this IC can be up to 265V with a maximum output power of 68W. Moreover, the device offers high power efficiency and low quiescent current.
The SG6903SZ PFC controller uses a single-cycle control and is suitable for both continuous conduction mode (CCM) and discontinuous conduction mode (DCM). In continuous conduction mode, the output ripple is minimized by means of primary current control, whereas in discontinuous conduction mode, the output voltage is regulated by means of an outer loop voltage control. The circuit is designed to improve the power factor of the output voltage by synchronizing the input and output of the PFC controller.
The working principle of the SG6903SZ PFC controller is quite straightforward. When a DC input voltage is supplied, the on-board power factor controller will detect it and adjust the feedback loop accordingly. Then, the controller will provide a voltage feedback signal to the pulse width modulator (PWM) which will then control the output voltage by switching the gate signals. This process is repeated until the desired output is achieved. The power factor of the output is improved by using the current feedback and pulse modulating techniques.
In conclusion, the SG6903SZ PFC controller is a high-performance, high-efficiency regulating device. Its wide input voltage range and adjustable voltage and power make it suitable for a variety of applications. Additionally, its single-cycle current control architecture enables it to offer high performance along with maximum power efficiency. The easy-to-use design of this controller makes it a great choice for the most demanding power factor correction applications.
The specific data is subject to PDF, and the above content is for reference
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