Overview
The FDMF6823 series, produced by Fairchild Semiconductor (now part of ON Semiconductor), represents a family of high-performance, high-frequency DrMOS (Driver-MOSFET) modules. These modules are designed for synchronous buck DC-DC converter applications and are known for their ultra-compact design and integrated solution. The FDMF6823 integrates a driver IC, two power MOSFETs, and a bootstrap Schottky diode into a thermally enhanced 6x6 mm PQFN package, optimizing the complete switching power stage for high-current and high-frequency operations.
Key Specifications
| Parameter | Condition | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| Output Current | - | - | 55 A (FDMF6823B), 60 A (FDMF6823A) | - | A |
| Supply Voltage | - | 4.5 V | - | 5.5 V | V |
| UVLO Threshold | VCIN Rising | 2.9 V | 3.1 V | 3.3 V | V |
| Thermal Warning Flag Activation Temperature | - | - | - | 150 °C | °C |
| Thermal Warning Flag Reset Temperature | - | - | - | 135 °C | °C |
| Package Type | - | - | - | 40-Lead, Clipbond PQFN | - |
| Operating Temperature | - | -40 °C | - | 150 °C (TJ) | °C |
Key Features
- Integrated Solution: Combines a driver IC, two power MOSFETs, and a bootstrap Schottky diode in a single package.
- Ultra-Compact Design: 6x6 mm PQFN package, offering significant space savings compared to discrete solutions.
- High-Performance PowerTrench MOSFETs: Reduces switch ringing and eliminates the need for snubber circuits in most buck converter applications.
- Improved Efficiency: Skip-Mode (SMOD) for enhanced light-load efficiency and reduced dead times and propagation delays in the driver IC.
- Thermal Warning Function: Warns of potential over-temperature situations.
- 3-State 5 V PWM Input: Compatible with a wide range of PWM controllers.
- High-Current Handling: Up to 60 A output current depending on the model.
- Low-Profile SMD Package: Optimized for high-frequency switching up to 1 MHz.
Applications
- High-Performance Gaming Motherboards: Ideal for high-current DC-DC converters.
- Compact Blade Servers: V-Core and Non-V-Core DC-DC converters.
- Desktop Computers: V-Core and Non-V-Core DC-DC converters.
- Workstations: High-current DC-DC point-of-load converters.
- Networking and Telecom: Microprocessor voltage regulators.
- Small Form-Factor Voltage Regulator Modules: Optimized for compact designs.
Q & A
- What is the FDMF6823 series used for?
The FDMF6823 series is used for synchronous buck DC-DC converter applications, particularly in high-performance and high-frequency environments.
- What are the key components integrated into the FDMF6823 module?
The module integrates a driver IC, two power MOSFETs, and a bootstrap Schottky diode.
- What is the package type and size of the FDMF6823 module?
The module is packaged in a 40-Lead, Clipbond PQFN with dimensions of 6x6 mm.
- What is the maximum output current of the FDMF6823A and FDMF6823B models?
The FDMF6823A has a maximum output current of 60 A, while the FDMF6823B has a maximum output current of 55 A.
- What is the purpose of the Skip-Mode (SMOD) in the FDMF6823 module?
The Skip-Mode (SMOD) is designed to improve light-load efficiency.
- What is the thermal warning function in the FDMF6823 module?
The thermal warning function warns of potential over-temperature situations, with an activation temperature of 150 °C and a reset temperature of 135 °C.
- What type of PWM input does the FDMF6823 module support?
The module supports a 3-state 5 V PWM input, compatible with a wide range of PWM controllers.
- What are some of the key applications for the FDMF6823 module?
Key applications include high-performance gaming motherboards, compact blade servers, desktop computers, workstations, and networking and telecom microprocessor voltage regulators.
- What technology does the FDMF6823 module use to reduce switch ringing?
The module uses Fairchild's high-performance PowerTrench MOSFET technology to reduce switch ringing and eliminate the need for snubber circuits in most buck converter applications.
- Is the FDMF6823 module RoHS compliant?
Yes, the FDMF6823 module is RoHS compliant.
