Overview
The UCC27425DGNR is a high-speed dual MOSFET driver from Texas Instruments, part of the UCC2742x family. This component is designed to deliver large peak currents into capacitive loads, making it suitable for applications requiring high current drive capability. The UCC27425 specifically features one inverting channel (A) and one non-inverting channel (B), providing flexibility in driving external MOSFETs. Available in a thermally enhanced 8-pin PowerPAD™ MSOP package (DGN), this driver enhances long-term reliability by drastically lowering thermal resistance.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | PowerPAD™ MSOP (DGN) | |
| Pins | 8 | |
| Operating Temperature Range | -40 to 125 | °C |
| Supply Voltage (VDD) | 4 to 15 | V |
| Output Current (DC) | 0.2 | A |
| Pulsed Output Current | ±4.5 | A |
| Input Voltage (INA, INB) | -5 to 6 or VDD + 0.3 (whichever is larger) | V |
| Enable Voltage (ENBA, ENBB) | -0.3 to 6 or VDD + 0.3 (whichever is larger) | V |
| Propagation Delay Time (CLOAD = 1.8 nF) | 25 ns (falling), 35 ns (rising) | ns |
| Rise and Fall Times (CLOAD = 1.8 nF) | 20 ns (rise), 15 ns (fall) | ns |
| Power Dissipation at TA = 25°C (DGN package) | 3 | W |
Key Features
- Industry-standard pin-out
- Enable functions for each driver (ENBA and ENBB)
- High current drive capability of ±4 A
- Unique BiPolar and CMOS True Drive output stage for high current at MOSFET Miller thresholds
- TTL/CMOS compatible inputs independent of supply voltage
- Fast rise and fall times (20 ns and 15 ns respectively with 1.8 nF load)
- Typical propagation delay times of 25 ns (falling) and 35 ns (rising)
- Dual outputs can be paralleled for higher drive current
- Available in thermally enhanced PowerPAD™ MSOP package for improved reliability
- Rated from -40°C to 125°C
Applications
The UCC27425DGNR is suitable for various high-speed switching applications, including but not limited to:
- Power supplies and DC-DC converters
- Motor control and drive systems
- High-frequency switching circuits
- Industrial control systems
- Automotive electronics
Q & A
- What is the maximum output current of the UCC27425DGNR?
The UCC27425DGNR can deliver up to ±4.5 A of pulsed output current and 0.2 A of DC output current.
- What are the operating temperature ranges for the UCC27425DGNR?
The operating temperature range is from -40°C to 125°C.
- What types of packages are available for the UCC27425?
The UCC27425 is available in PowerPAD™ MSOP (DGN), SOIC-8 (D), and PDIP-8 (P) packages.
- What is the supply voltage range for the UCC27425DGNR?
The supply voltage range is from 4 V to 15 V.
- How do the enable functions work on the UCC27425DGNR?
The enable functions (ENBA and ENBB) are implemented on pins 1 and 8, internally pulled up to VDD for active high logic, and can be left open for standard operation.
- What is the propagation delay time for the UCC27425DGNR?
The typical propagation delay times are 25 ns (falling) and 35 ns (rising) with a 1.8 nF load.
- Can the dual outputs of the UCC27425DGNR be paralleled?
Yes, the dual outputs can be paralleled for higher drive current.
- What is the purpose of the PowerPAD™ MSOP package?
The PowerPAD™ MSOP package drastically lowers the thermal resistance to improve long-term reliability.
- What types of MOSFETs can the UCC27425DGNR drive?
The inverting output (OUTA) is intended to drive external P-channel MOSFETs, while the non-inverting output (OUTB) is intended to drive external N-channel MOSFETs.
- How does the unique BiPolar and CMOS True Drive output stage benefit the UCC27425DGNR?
The unique BiPolar and CMOS True Drive output stage allows for high current drive capability at MOSFET Miller thresholds and efficient current sourcing and sinking at low supply voltages.
