TEA1723FT/N1

NXP  TEA1723FT/N1  芯片, 控制器, 开关电源, 700V, 1750HZ FBRS, 11W, 7SOIC

The is a Switched Mode Power Supply SMPS Controller IC for power applications and operates directly from the rectified universal mains input. The device includes a high voltage power switch and has been optimized for fly-back converter topologies to provide high-efficiency over the entire load range with ultra-low power consumption in the no-load condition. It provides a circuit for start-up directly from the rectified mains voltage without any external bleeder circuits. The converter operates as a regulated voltage source from no-load up to the maximum output current and operates as current source that delivers the maximum current over a broad output voltage range. Using the TEA1723, a low power converter can be built at minimum cost and with the minimum number of external components. The controller regulates the output voltage with primary-side sensing which eliminates the need for an additional secondary feedback circuitry and simplifies the design.

.

Primary sensing for control of output voltage without optocoupler and secondary feedback circuitry

.

Minimizes audible noise in all operation modes

.

Jitter function for reduced EMI

.

Very low supply current in no-load condition with energy saver mode

.

Incorporates high voltage start-up circuit with zero current consumption under switching operation

.

Overvoltage protection on feedback control pin with auto-restart

.

Undervoltage lock-out protection on IC supply pin

.

Over temperature protection

.

Soft-start by reduced peak current for zero and low output voltage

.

Demagnetization protection for guaranteed discontinuous conduction mode operation

.

Open and short-circuit protection of the feedback control pin

.

Short-circuit protection of the charger output

.

700V High voltage power switch for global mains operation

.

<53mW Enables no-load power consumption