BD9A400MUV-E2

BD9A400MUV-E2 Application Field and Working Principle

PMIC - Voltage Regulators - DC DC Switching Regulators

The BD9A400MUV-E2 is a monolithic Power Management IC (PMIC) part of the DC DC switching regulators category. It is designed for DC-DC voltage conversion from +2.2V up to +3.3V, with switching frequency of 400kHz, and output current up to 4A. The BD9A400MUV-E2 is an integrated circuit comprised of a non-synchronous buck converter, a low-dropout linear regulator, power MOSFETs, and various protective and control circuits.

Application

BD9A400MUV-E2 can be used in a wide range of products to provide regulated power to various embedded systems, due to its switching regulator, low-dropout regulator, and fast transient response. BD9A400MUV-E2 PMICs are widely used in consumer electronic products such as portable game consoles, mobile phones, PDAs, and other portable multimedia products.

Architecture

The BD9A400MUV-E2 IC is composed of several components: a controller, a pair of power MOSFETs, a synchronous rectifier, a low-dropout linear regulator, an integrating input current limiter, and an undervoltage lockout. The controller block is designed for synchronous buck conversion, providing high efficiency and fast transient response. The pair of power MOSFETs provide low on-resistance and can operate with a wide input voltage range of 2.2 to 5.5V.

Working Principle

The working principle of the BD9A400MUV-E2 is based on switching regulator and low-dropout linear regulator. The internal control circuit is responsible for shut-off, switch-on, Over current protection and Under Voltage protection. When the input voltage is in the range of 2.2-5.5V, the controller creates a high bandwidth pulse-width modulation (PWM) signal to control the switching MOSFETs. The PWM signal enables the power MOSFETs to operate in a pulse-width modulation (PWM) mode and regulate the output voltage. The output voltage is then fed to the integrated low-dropout linear regulator to provide a precise output voltage.

Conclusion

The BD9A400MUV-E2 from Panasonic is a monolithic Power Management IC that provides DC-DC switching conversion with high efficiency, low power consumption and fast transient response. The BD9A400MUV-E2 can be used for portable and consumer electronic products, such as game console and mobile phones, to provide a regulated power supply to the system. It can safely operate in a wide input voltage range of 2.2 to 5.5V and its power MOSFETs provide low on-resistance. The internal control circuitry provides several protection, such as Shutdown, Over current, and Under Voltage protection. Overall, the BD9A400MUV-E2 PMIC is an excellent choice for embedded consumer electronic applications.