NCP1377BDR2

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The NCP1377BDR2 is a highly integrated offline high-voltage PWM current-mode controller with built-in extra high-voltage startup cell and extra low-voltage protection. This versatile device is an industry leader in the PMIC - AC DC Converters, Offline Switchers market, designed to provide optimized solutions when used in continuous conduction mode (CCM) and discontinuous conduction mode (DCM) applications. It is suitable for environments in which power density and miniaturization is necessary, such as in computing boards and in home appliances.

The NCP1377BDR2 features a full digital control loop for improved system performance and ease of use. This includes an integrated programmable current sense amplifier (also known as an incremental current-mode control loop), a buck regulator, and an integrated startup cell. The control loop is highly stable and offers increased design flexibility and reliability.

The main objective of the NCP1377BDR2 is to provide improved and optimized solutions to the design challenge of developing high-efficiency, miniaturized, low-cost and low-noise offline AC-DC converters. It is also suitable for applications that require high efficiency, wide bandwidth, and low standby power consumption. This device offers improved performance, lower cost and better thermal efficiency than competing solutions.

In terms of its operation, the NCP1377BDR2 employs a full digital control loop, enabling fast and stable switching transitions, digital constant-current control, and full digital overvoltage protection. The device is also suitable for continuous conduction mode applications, which is ideal for design miniaturization. In CCM mode, the device is capable of tracking the desired output current accurately, even under sudden load transients.

For applications requiring step-down voltage conversion, the NCP1377BDR2 features an integrated buck regulator. The buck regulator features wide ripple rejection and a low on-resistance of only 0.5Ω, facilitating high efficiency and low output voltage ripple. The buck regulator is also enabled with a programmable high-current startup cell, limiting the start-up current to protect your circuit.

The NCP1377BDR2 also features low-voltage protection and over temperature protection, which shut down the device if the output voltage or temperature exceeds predetermined values. It also offers remote on/off control and an adjustable maximum duty cycle control.

In terms of its performance, the NCP1377BDR2 has an operating input voltage range of 4.75V to 30V and an output current of up to 2A. With a minimum on-time of 0.5us, it provides a maximum conversion frequency of 400kHz. The device includes an under-voltage lockout feature, adjustable operating frequency, and programmable dead-time settings.

In summary, the NCP1377BDR2 is an efficient, low-cost, and highly integrated device for designing PMIC - AC DC Converters, Offline Switchers such as buck regulators, offline converters, and SMPS converters. It offers improved system performance and reduced design complexity. With its wide range of features and easy-to-use programming, it is an industry leader in the PMIC - AC DC Converters, Offline Switchers market.

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