Overview
The UC1848 family of PWM control ICs provides practical primary side control of isolated power supplies with DC control of secondary side current.
Key Features
Average current mode control ensures cycle-by-cycle peak switch current and maximum average inductor current are well defined and will not run away in a short circuit situation.
Undervoltage lockout (UVLO) circuit monitors supply voltage, reference voltage, and input line voltage, with a low startup current (500μA) and actively holds the output low during UVLO.
Patented technique of sensing secondary current in an isolated buck-derived converter from the primary side allows for full DC control of output current.
High current (2A peak) Totem Pole output driver and wide bandwidth (8MHz) current error amplifier.
Applications
Control of a wide variety of converter topologies, including isolated buck-derived converters.
Manual:
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