UCC3888DG4

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The UCC3888DG4 is a high-efficiency, low-power, secondary-side control, self-driven synchronous MOSFET driver with a current-mode controlled flyback converter integrated into a single chip. The device is designed to provide a regulated output voltage from an AC power source with surge protection and over-current protection. The device features an on-board 2-pole switch for soft-start, allowing for a low-voltage, low-power current-mode topology. The design provides robust operation over a wide range of input voltages, output power levels, and line conditions.The UCC3888DG4 is used in applications where primary-side control and low-power, low-distortion solutions are required. Typical applications include AC/DC power adapters, offline switching power supplies, motor drives, uninterruptible power systems, and other AC-driven products.

The UCC3888DG4 device contains a single-channel driver and current-mode controlled flyback converter. The device has a wide operating frequency range of 20kHz to 200kHz, allowing for operation at both low and high line input ranges. It also features low standby power of less than 30mW and provides up to 3A drive current for higher power applications. The device also features a special slew-rate modulator for reducing noise and output distortion, and the device automatically switches to pulse-width modulation (PWM) mode for low line conditions for increased efficiency and ripple.The device also features a high-voltage detection circuit which allows the device to detect input voltages without requiring a dedicated line sense winding. It also features an on-board low-loss 2-pole switch which provides soft-start as well as cycle-by-cycle current limit. The device also provides over-temperature protection and over-voltage protection.

The UCC3888DG4 is a highly efficient, low-power, synchronous MOSFET driver with a secondary-side control, current-mode controlled flyback converter. It provides a robust solution for AC/DC power adapters, offline switching power supplies, motor drives, uninterruptible power systems, and other AC-driven products. The device provides wide operating frequency range, low standby power, high drive current, high-voltage detection, soft-start, and over-temperature/voltage protection.

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