NCP1340B4D1R2G

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The NCP1340B4D1R2G is a non-synchronous buck switch mode power supply controller designed for AC/DC converters, making it easier for users to develop function-specific offline switchers by leveraging a highly precise power factor correction (PFC) function. It is typically used in low-voltage/high-power applications, such as adapters, chargers, and LED power supplies. The device is available in two versions, with a PWM frequency of 700kHz and 1MHz respectively.

The NCP1340B4D1R2G offers an integrated high-speed gate driver and low gate-driving charge for reduced design complexity and cost. Furthermore, the device utilizes a multi phase modulation technique, which provides currents of constant amplitude and phase providing a low standby power. It also includes integrated over-temperature and over-voltage protection.

The zero voltage switching (ZVS) technology of the NCP1340B4D1R2G is especially beneficial in AC/DC converters and offline switchers. The ZVS technology allows the device to switch virtually instantaneously between two states of operation thus delivering high-efficiency power conversion. It also eliminates the need for large filter components and reduces component count.

The NCP1340B4D1R2G is specifically designed to offer high efficiency and reduce component count. Its primary power switching elements are external MOSFETs and the device manages several parts of the system, including the boost PFC, primary switching, and secondary switching, providing an efficient and stable operating environment. Furthermore, it houses an auto-restart system for overload protection and peak current mode control for fast load transient response.

The device supports a wide range of input voltage from 110VAC to 400VAC and can deliver up to 800W of power. The NCP1340B4D1R2G also provides several other integrated features such as soft-start and burst mode operation. Its operating frequency is adjustable and the device is equipped with several protection features, including an over temperature protection, overMOSFET temperature protection, overcurrent protection, overvoltage protection, and an open-loop protection.

Overall, the NCP1340B4D1R2G is a highly efficient, low component count, offline AC/DC converter switch mode power supply controller. It offers an integrated, high-speed gate driver, multi phase modulation technique, integrated over-temperature and over-voltage protection, zero voltage switching, and other features to improve converter efficiency and reduce component count. Furthermore, it is widely used for low-voltage/high-power applications, such as adapters, chargers, and LED power supplies.

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