NCP1378PG

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

NCP1378PG is a high efficiency, high current and low voltage step up switching controller, designed to drive N-channel MOSFETs and other pass devices. It is optimized for high efficiency applications and has a wide input voltage range. The device operates over a wide temperature range and has an adjustable operating frequency. It is available in a 3mm × 3mm 16-lead QFN package.

NCP1378PG is designed for applications such as notebook power adapter, telecom adapter, LED driver, and UPS. It features adjustable switching frequency (200kHz to 1MHz) to get the most efficient output power delivered. Low Startup voltage (1.2V) helps to reduce the overall solution size and improve efficiency. Internal current sensing reduces external parts count. It has over-voltage, over-current and thermal protection, and programmable soft-start to protect against inrush currents.

The controller integrates two voltage regulation loops - a primary voltage loop for controlling the output voltage, and a current loop for controlling average current. This results in a constant switching frequency, fast transient response and high line and load regulation. The output voltage is adjustable within 0.8V - 6V. The device is designed to drive N-Channel MOSFETs in step-up configuration providing lightning-fast transient response, improved system stability and efficiency.

The core elements of the voltage regulation include an oscillator, a voltage reference and comparator, current-sense amplifier, error amplifier, and a logic controller. The reference voltage is used to control the output voltage by comparing it to the sense voltage. The constant frequency oscillator is used to generate the switching signal for the pass device. The current-sense amplifier senses the peak inductor current that is regulated using the error amplifier output.

The NCP1378PG maintains high efficiency and reduces EMI noise by keeping the MOSFET on time low. The integrated soft-start circuitry limits inrush currents by limiting charge current and reducing the RMS current. The output power is programmed by adjusting the resistor divider connected to the FB pin. The device also has an Enable pin to manually turn off the system.

NCP1378PG is designed to meet the requirements of a wide range of applications. Its wide range of adjustable operating frequencies, low startup voltage and voltage loop architecture, make it an ideal choice for POL converters, buck converters, and flyback converters.

In conclusion, NCP1378PG is a high quality, high current, low voltage step-up switching controller, ideal for applications such as notebook power adapter, telecom adapter, LED driver, and UPS. It has a wide input voltage range, adjustable operating frequencies and integrated current sensing, making it a great choice for power conversion applications.

The specific data is subject to PDF, and the above content is for reference