LNBP20PD-TR Integrated Circuits (ICs)

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LNBP20PD-TR is a special type of voltage regulator in PMIC (Power Management Integrated Circuit). It provides integrated control, overload protection and isolation for an AC-DC power factor-corrected power system. It greatly simplifies the design of high-voltage rectification systems and contains integrated controllers to optimize the current and voltage waveforms.

The LNBP20PD-TR is a high-efficiency, high-voltage, low-ripple gate driver for rectifying AC input voltage to a DC output voltage. It is a continuous conduction mode (CCM) converter that combines average current control and sinusoidal input current control. It is a type of voltage regulator optimized for low cost, low distortion, and low noise.

The LNBP20PD-TR has an integrated overload protection circuit and can withstand up to 900V input. A wide operating temperature range makes it suitable for industrial applications. It features an adjustable upper voltage limit and an internal ground clamping feedback network, which helps to reduce power dissipation.

This regulator utilizes the triangular waveform characteristic of the PWM technique to control a bridge circuit, allowing for long-term holding of the output voltage. The average value of the control oscillator is equal to the DC output voltage reference. The separate error amplifier will be reset by the oscillator when the peak voltage rises above the output voltage. This provides a precise voltage regulation with low output ripple.

The LNBP20PD-TR provides a two-level AC input voltage - high voltage for AC power supply, low voltage for DC power supply. This voltage switch is obtained by an auxiliary transformer which contains two sets of primary coils and one set of secondary coils. The primary side of this switch is connected to the AC voltage while the secondary side is connected to the DC voltage. The primary coils are set to either high or low voltage and this adjustment is accomplished by changing the inductance of the primary coil by rotating the magnetic wheel control knob.

The LNBP20PD-TR has multiple applications. It can be used to regulate the voltage of high-voltage AC power supply, such as in electronic boards and power line applications, or to provide DC power supply, such as in computers, telecommunication and consumer electronics. This voltage regulator is also suitable for automotive applications, where its adjustable upper voltage limit can be used to reduce false tripping of the system under large inrush currents.

In conclusion, the LNBP20PD-TR is a special purpose voltage regulator for high-voltage AC-DC power factor-corrected power systems. It features an adjustable upper voltage limit, overload protection, and low noise performance. This voltage regulator can be used in a variety of applications, such as electronic boards, power line applications, computers, telecommunication and consumer electronics.

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