onsemi

FDMF6821B

FDMF6821B Description

The FDMF6821B is a high-performance half bridge driver IC designed for synchronous buck converters, offering robust performance and efficiency in power management applications. Manufactured by onsemi, this device is part of the XS™ DrMOS series, leveraging advanced DrMOS and Power MOSFET technologies. The FDMF6821B is designed to operate within a supply voltage range of 4.5V to 5.5V and can handle load voltages from 3V to 16V. It features a half bridge output configuration suitable for inductive, capacitive, and resistive load types.

This IC is packaged in a 40PQFN format, ensuring a compact and efficient surface mount solution. The FDMF6821B supports a maximum output current of 55A per channel, making it ideal for high-current applications. It also includes a bootstrap circuit and diode emulation features, enhancing its versatility and performance. Despite being marked as obsolete, the FDMF6821B remains a reliable choice for existing designs and legacy systems.

FDMF6821B Features

• Output Configuration: Half Bridge
• Load Type: Inductive, Capacitive, Resistive
• Technology: DrMOS, Power MOSFET
• Voltage - Supply: 4.5V to 5.5V
• Voltage - Load: 3V to 16V
• Rds On (Typ): 1Ω LS, 1Ω HS
• Current - Output / Channel: 55A
• Interface: Logic, PWM
• Package: 40PQFN
• Features: Bootstrap Circuit, Diode Emulation
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH Status: REACH Unaffected
• RoHS Status: ROHS3 Compliant
• ECCN: EAR99
• HTSUS: 8541.29.0095

FDMF6821B Applications

The FDMF6821B is specifically designed for synchronous buck converters, making it an ideal choice for applications requiring high efficiency and power density. Its robust performance and versatility make it suitable for a wide range of industries, including:

• Power Supplies: Efficient power conversion in high-current applications.
• Telecommunications: Reliable power management in telecom infrastructure.
• Industrial Equipment: Robust performance in industrial power systems.
• Consumer Electronics: Efficient power delivery in consumer devices.

Conclusion of FDMF6821B

The FDMF6821B stands out as a high-performance half bridge driver IC, offering significant advantages over similar models. Its advanced DrMOS and Power MOSFET technologies ensure high efficiency and reliability, making it a preferred choice for synchronous buck converters. The inclusion of a bootstrap circuit and diode emulation enhances its functionality and adaptability. Despite its obsolete status, the FDMF6821B remains a reliable solution for existing designs and legacy systems, ensuring continued performance and compatibility.