Overview
The FDMF3170 is ON Semiconductor's next generation of Smart Power Stage (SPS) modules. This integrated solution combines high-performance MOSFETs with a driver IC, optimized for high-current, high-frequency synchronous buck DC-DC converters. The module features a compact 5 mm x 6 mm PQFN package and is designed to minimize system inductance and power MOSFET RDS(ON). It includes advanced thermal and current monitoring capabilities, making it highly efficient and reliable for various high-power applications.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Rated Output Current | - | - | 70 A | A |
| Operating Junction Temperature Range | -40 | - | 125 | °C |
| Package Type | - | - | 39-Lead, NON-JEDEC, PQFN 5 mm x 6 mm | - |
| Input Voltage (VCC, PVCC) | 4.5 | 5.0 | 5.5 | V |
| Output Stage Supply Voltage (VIN) | 4.5 | - | 16.0 | V |
| Switching Frequency | - | - | 1 MHz | Hz |
| Junction-to-Ambient Thermal Resistance | - | - | 10.5 | °C/W |
| ESD Protection (Human Body Model) | - | - | 2000 V | V |
Key Features
- Up to 70 A of current handling capability.
- High-performance, universal footprint, copper-clip 5 mm x 6 mm PQFN package.
- Fairchild’s PowerTrench® MOSFETs for clean voltage waveforms and reduced ringing.
- 30 V / 25 V breakdown voltage MOSFETs for higher long-term reliability.
- Optimized FET pair for highest efficiency at 10% ~ 15% duty cycle.
- Integrated current monitor compliant with Intel’s VR13 accuracy requirements.
- Integrated temperature monitor (TMON) with a 0.8 V output at 25°C and an 8 mV/°C slope.
- Catastrophic fault detection including over-temperature condition, over-current protection, high-side short detect, and under-voltage lockout (UVLO) on VCC and PVCC.
- 3-state PWM input gate drive design supporting phase shedding and other features.
- Fairchild Green Packaging and RoHS compliance).
Applications
- CPU and memory voltage regulators in VR13 Purley systems).
- High-current utility rails in server systems).
- Communications infrastructure systems).
Q & A
- What is the maximum output current of the FDMF3170?
The FDMF3170 can handle up to 70 A of output current).
- What is the operating junction temperature range of the FDMF3170?
The operating junction temperature range is from -40°C to 125°C).
- What is the package type of the FDMF3170?
The FDMF3170 comes in a 39-Lead, NON-JEDEC, PQFN 5 mm x 6 mm package).
- What are the input voltage ranges for VCC and PVCC?
The input voltage ranges for VCC and PVCC are from 4.5 V to 5.5 V).
- What is the maximum switching frequency supported by the FDMF3170?
The FDMF3170 supports switching frequencies up to 1 MHz).
- Does the FDMF3170 have integrated current and temperature monitoring?
Yes, the FDMF3170 includes integrated current and temperature monitors).
- What kind of fault detection does the FDMF3170 have?
The FDMF3170 includes catastrophic fault detection such as over-temperature condition, over-current protection, high-side short detect, and under-voltage lockout (UVLO) on VCC and PVCC).
- Is the FDMF3170 RoHS compliant?
Yes, the FDMF3170 is RoHS compliant and features Fairchild Green Packaging).
- What are some typical applications of the FDMF3170?
Typical applications include CPU and memory voltage regulators, high-current utility rails in server systems, and communications infrastructure systems).
- How does the 3-state PWM input gate drive work?
The 3-state PWM input gate drive supports both logic HIGH and LOW levels, along with a 3-state shutdown window, enabling features like phase shedding).
