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RS2022P Datasheet(PDF) 1 Page - Orister Corporation |
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RS2022P Datasheet(HTML) 1 Page - Orister Corporation |
1 / 7 page Page No. : 1/ DS-RS2022-0 2 November, 2010 www.Orister.com RS2022 Low Power OFF-Line SMPS Primary Switcher The RS2022 combines a dedicated current mode PWM controller with a high voltage Power MOSFET on the same silicon chip. Typical applications cover off line power supplies for battery charger adapters, standby power supplies for TV or monitors, auxiliary supplies for motor control, etc. The internal control circuit offers the following benefits: ◎ Large input voltage range on the VCC pin accommodates changes in auxiliary supply voltage. This feature is well adapted to battery charger adapter configurations. ◎ Automatic burst mode in low load condition. ◎ Over voltage protection in HICCUP mode. Features ◎ 85V to 265V wide range AC voltage input ◎ A 700V MOSFET on the same silicon chip ◎ Auto start up with high voltage current source ◎ PWM with current mode control ◎ 9V to 38V wide range VCC voltage ◎ Fixed 60KHz switching frequency ◎ Automatic skip cycle mode in low load condition ◎ Over temperature, over current and over voltage protection ◎ Auxiliary under voltage lockout with hysteresis Applications ◎ Power AC/DC Adapters for Chargers ◎ DVD/VCD power supplies ◎ Electromagnetic Oven power supplies ◎ Air Conditioner power supplies ◎ STB power supplies ◎ AC/DC LED Driver Applications Pin Configurations TYPE DIP-8L European (195-265 Vac) 20W US (85-265 Vac) 12W Pin Number Pin Name Function Description 1, 2 GND Sense FET source terminal on primary side and internal control ground. 3 COMP Feedback input defines the peak drain MOSFET current. 4 VCC Positive supply voltage input. Although connected to an auxiliary transformer winding, current is supplied from SW via an internal switch during startup (see Internal Block Diagram section). It is not until VCC reaches them UVLO upper threshold (14.5V) that the internal start-up switch opens and device power is supplied via the auxiliary transformer winding. 5, 6, 7, 8 SW The SW pin is designed to connect directly to the primary lead of the transformer and is capable of switching a maximum of 700V. |
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