NCP1234AD100R2G

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NCP1234AD100R2G Applcation Field and Working Principle

NCP1234AD100R2G solutions are used for power management applications like AC-DC and DC-DC conversions in PMIC - AC DC Converters and Offline Switchers.

What is NCP1234AD100R2G?

The NCP1234AD100R2G is a cost-effective, advanced power management integrated circuit (PMIC) from ON Semiconductor that combines a range of current-mode pulse width modulation (PWM) controllers, a fixed-frequency oscillator, a low on-resistance N-MOSFET (FET) output switch, a voltage reference, and various other features. It is designed to reduce size and complexity in the design of DC-DC converters.

Applications of NCP1234AD100R2G

The NCP1234AD100R2G integrated circuit (PMIC) can be used in applications such as uninterruptible power supply, high-performance computing systems, ultra-portable power converters, and a variety of other offline switchers and AC-DC Converters. It is available in an 8-pin SOIC package, and with its robust control loop, the NCP1234AD100R2G offers outstanding system performance.

Features of NCP1234AD100R2G

The NCP1234AD100R2G high-performance PMIC provides gate drivers with two levels of current capability, output voltage programming, soft-start/stop, under-voltage/over-voltage detection, free-running operation, programmable loop response, peak current limit and frequency limit, and adjustable dead time. It offers cycle-by-cycle current limiting, and an adjustable slew rate for improved efficiency with lower EMI. It also offers protection benefits such as soft-start, cycle-by-cycle current limit and over-temperature protection.

Working Principle of NCP1234AD100R2G

The NCP1234AD100R2G integrated circuit (PMIC) includes an internal fixed frequency oscillator, which drives a sawtooth waveform. This sawtooth wave is then compared with an external reference voltage to generate a pulse-width-modulated (PWM) control signal. This PWM control signal then drives a low-on resistance N-MOSFET, which is used to convert the AC input voltage to DC output. The NCP1234AD100R2G also utilizes a synchronous boost regulator, which ensures that the output voltage remains constant in the event of an input transient.

The NCP1234AD100R2G also features current-mode control, which is designed to maintain greater accuracy of the output voltage regulation over varying load conditions. This control method also reduces the output ripple voltage, provides better line and load regulation, reduces input capacitor requirements, and reduces the stress on the output filter components.

In addition to its current-mode control and synchronous boost regulator, the On Semiconductor NCP1234AD100R2G includes other features such as under/over-voltage detection, soft-start, adjustable dead time, and frequency limit that ensure robust system protection.

Conclusion

The NCP1234AD100R2G IC (integrated circuit) from ON Semiconductor is a cost-effective, advanced power management IC that is designed to reduce size and complexity in the design of AC-DC converters and other offline switchers. The NCP1234AD100R2G features a robust control loop and various protection mechanisms, making it an ideal choice for a variety of power management applications.

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