INN3266C-H204-TL

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The INN3266C-H204-TL is a Programmable Off-Line Quasi-Resonant FlybackController, developed by Innoswitch. It’s a Programmable Off-Line Quasi-Resonant FlybackController designed for converting wide AC input voltage range with minimum transformer stress. It features a wide operating temperature range and the ability to detect the mains voltage type automatically.

The INN3266C-H204-TL is a part of Programmable Off-Line Quasi-ResonantFlybackController under the PMIC – AC DC Converters, Offline Switchers category. Itisa universal AC input/output device which can operate as a low standby power offline flybackswitch-mode power supplies, SMPS. It can deliver output powers up to 130W, with a wide varietyof LED-backlighted LCD TV’s, digital TVs, projection TVs and STB applications.

The INN3266C-H204-TL integrates fixed/adjustable peak current-mode control and proprietary primary-side sensing technology that eliminates opto-coupler, resulting in greatly improved system efficiency and reduced BOM cost. In the case of low input voltage conditions, the device will automatically enter the low voltage protection mode (LVD) to protect the entire power system.

The working principle behind the INN3266C-H204-TL is a bit complex. The device is acurrent-mode controlled flyback converter that integrates both a MOSFET as well as a progammable 650Voff-line primary controller. The two-level control architecture provided by this device utilizes a fixed loop andadeadjustable loop to consequently facilitate tracking of the input voltage. Further, more power can be deliveredto the secondary side without skewing the input voltage.

The primary control loop maintains an accuracy of the output voltage, while the second control loop maintains a constant on time. The INN3266C-H204-TL also features an internal startup circuit for start up time enhancement, leading to improved overall efficiency.

The secondary side employs a regulated flybackconverter with integrated half-bridge driver. An IO-port pin is provided for enabling end products to detectthe output voltage inside the primary side, as well as for providing sequencing for the half-bridge driver. This ensures that the voltage on the output side is exact, eliminating the need for costly external optical isolation components.

In conclusion, the INN3266C-H204-TL is a Programmable Off-Line Quasi-Resonant FlybackController under the PMIC - AC DC Converters, Offline Switchers category. It is a universal AC input/output devicewhich can operate as a low standby power offline flyback switch-mode power supplies. Its primary control loop and secondary control loop maintain accuracy of the output voltage, while minimizing system stress and boosting efficiency due to its integrated features. This makes the INN3266C-H204-TL the perfect choice for a wide range of LED-backlighted LCD TVs and digital TVs.

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