NCP1075ABP065G

Series:	*
Packaging:	Tube
Part Status:	Active
Package / Case:	8-DIP (0.300", 7.62mm), 7 Leads
Supplier Device Package:	7-PDIP
Mounting Type:	Through Hole

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Introduction

The NCP1075ABP065G Power Management Integrated Circuit (PMIC) is an example of an AC/DC converter and offline switcher, with integrated overvoltage protection and active clamping. This article will discuss the application field and working principle of the NCP1075ABP065G PMIC.

Applications

The NCP1075ABP065G is a highly integrated PMIC ideal for low power, low voltage, offline secondary side power conversion applications. Typical applications are power telephones, digital cameras, cordless phones, and other portable devices. The NCP1075ABP065G is designed to step-down 48 or 60 VAC or DC power sources to logic-level voltages (1.8 V to 24 V).

Features

The NCP1075ABP065G provides many features which make it an ideal choice for low power, low voltage, offline secondary side power conversion applications. The following list outlines some of the PMIC\'s features:

• Integrated overvoltage protection (OVP), active clamping, and reverse current protection.
• Constant current/constant voltage (CC/CV) power supply control.
• Programmable soft-start.
• Low supply current – typically 0.25 mA.
• Operating temperature range of -40°C to +105°C.
• Small package size of PQFN 5x5 mm.

With these features and the ability to deliver a wide range of output voltages, the NCP1075ABP065G is a cost effective, high performance solution for low power, low voltage, offline secondary side power conversion applications.

Working principle

The working principle of the NCP1075ABP065G is based on a boost converter architecture that alternately stores energy in the output capacitor and input inductor. When the high voltage switch is turned on, current is drawn from the input source and stored in the input inductor. The current then flows through the high voltage switch and diode, charging the output capacitor. The high voltage switch is then turned off, and the stored energy in the input inductor is discharged through the low voltage switch, charging the output capacitor further. The integrated current control regulates the output current, thereby providing constant current / constant voltage operation. The output voltage of the converter is determined by the ratio of the output capacitor to the input inductor. With a low on-resistance, low gate charge, and low minimum operating frequency, the NCP1075ABP065G is an ideal PMIC for small, portable applications.

Conclusion

The NCP1075ABP065G is an AC/DC converter and offline switcher with integrated overvoltage protection and active clamping, designed for low power, low voltage, offline secondary side power conversion applications. Its features include constant current/constant voltage power supply control, programmable soft-start, and low supply current – typically 0.25 mA, making it an ideal choice for highly integrated PMICs. Its working principle is based on a boost converter architecture, providing low on-resistance and low gate charge, as well as a low minimum operating frequency.

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