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Description
Flyback Controller, Current Control, UC18/UC28/UC38 Series, Texas Instruments The isolated-flyback power supply controller provides Constant-Voltage (CV) and Constant-Current (CC) output regulation to improve transient response to large load steps. Primary-Side Regulation (PSR) eliminates the need for an Optocoupler.
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FEATURES
● Automatic Feed Forward Compensation
● Programmable Pulse-by-Pulse Current Limiting
● Automatic Symmetry Correction in Push-pull Configuration
● Enhanced Load Response Characteristics
● Parallel Operation Capability for Modular Power Systems
● Differential Current Sense Amplifier with Wide Common Mode Range
● Double Pulse Suppression
● 500mA (Peak) Totem-pole Outputs
● ±1% Bandgap Reference
● Under-voltage Lockout
● Soft Start Capability
● Shutdown Terminal
● 500kHZ Operation
DESCRIPTION
The UC1846/7 family of control ICs provides all of the necessary features to implement fixed frequency,current mode control schemes while maintaining a minimum external parts count. The superior performance of this technique can be measured in improved line regulation, enhanced load response characteristics, and a simpler, easier-to-design control loop.Topological advantages include inherent pulse-by-pulse current limiting capability,automatic symmetry correction for push-pull converters, and the ability to parallel "power modules" while maintaining equal current sharing.
Protection circuitry includes built-in under-voltage lockout and programmable current limit in addition to soft start capability. A shutdown function is also available which can initiate either a complete shutdown with automatic restart or latch the supply off.
Other features include fully latched operation, double pulse suppression, deadline adjust capability,and a ±1%trimmed bandgap reference.
The UC1846 features low outputs in the OFF state,while the UC1847 features high outputs in the OFF state.
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The UC3846DWTR UC3846DW is an integrated circuit from Utsource that offers excellent performance for a wide range of applications. It features a high-speed current-mode PWM controller, a low-side gate driver, and a voltage feedback amplifier. The device also offers a wide range of protection features, including over-voltage, over-current, and short-circuit protection. With its high-speed switching
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03/17/2023
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UC3846DW
UC3846DW has several brands around the world that may have alternate names for UC3846DW due to regional differences or acquisition. UC3846DW may also be known as the following names:
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