BD7800FP-E2

BD7800FP-E2 Application Field and Working Principle

The BD7800FP-E2, which is classified under PMIC - Voltage Regulators - Linear, is a highly efficient and compact three-phase DC/DC step-down voltage switch. It is designed for cost-sensitive applications in the automotive, consumer and industrial electronics markets. The BD7800FP-E2 integrates a variety of features, including a high-level of protection functions, in order to reduce system complexity and save power consumption.

The BD7800FP-E2 is suitable for power conversion from a wide input voltage range and reduce the converted voltage to the desired lower output. The device uses a fixed frequency PWM (Pulse Width Modulation) rate for optimum performance and is suitable for automotive applications, consumer electronics, and other applications where space is limited and high efficiency is required.

Features

• 2-phase buck converter protection functions
• Independent power-on reset circuit
• Over temperature protection
• Ultra-low standby current
• Soft-start circuit
• Input voltage range: 2.7V to 5.5V
• Output voltage range: 0.8V to 1.3V
• Switching frequency: 300KHz

Application Field

The BD7800FP-E2 three-phase DC/DC step-down voltage switch is designed for automotive, consumer, and other applications where space is limited and high efficiency is required. It enables system designers to save power-consumption and optimize the performance of their products. The device can be used in a variety of applications such as power-supply for digital circuit, audio devices, and charging circuits.

Working Principle

The working principle of the BD7800FP-E2 is based on the Pulse Width Modulation (PWM) mode. In PWM mode, the average output voltage is proportional to the duty cycle of the signal. By varying the PWM duty cycle, the output voltage can be regulated. The BD7800FP-E2 utilizes the narrow-pulse-width control method, which makes it possible to obtain good control performance with a lightly-loaded inductor. The BD7800FP-E2 uses an integrated power-on reset circuit, enabling the device to automatically start up when the input voltage is above the minimum threshold. It also utilizes a soft-start circuit to provide smooth voltage transitions.

The BD7800FP-E2 should be placed on a heat sink to ensure the temperature is kept within the device’s operating range and to prevent any over-temperature issues. Furthermore, the device utilizes a wide range of protection functions, which include overvoltage protection, overcurrent protection, and over-temperature protection.