Overview
The UCC27425PG4 from Texas Instruments is a high-speed dual MOSFET driver designed to deliver large peak currents into capacitive loads. This device is part of the UCC2742x family, which includes various logic options such as dual-inverting, dual-noninverting, and one-inverting and one-noninverting configurations. The UCC27425PG4 is particularly useful in applications requiring high current drive capability and precise control over MOSFET switching.
The device features a unique BiPolar and MOSFET hybrid output stage that allows for efficient current sourcing and sinking, even at low supply voltages. It also includes enable functions for each driver channel, enhancing the control and flexibility of the device in various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VDD) | 4 to 15 | V |
| Output Current (IOUT_DC) | 0.2 | A |
| Pulsed Output Current (IOUT_PULSED) | 4.5 | A (0.5 μs) |
| Input Voltage (VIN) | -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 |
| Rise Time (tr) | 20 ns (typical with 1.8 nF load) | ns |
| Fall Time (tf) | 15 ns (typical with 1.8 nF load) | ns |
| Propagation Delay Time | 25 ns (input falling), 35 ns (input rising) | ns |
| Operating Temperature Range | -40 to 125 | °C |
| Junction Operating Temperature | -55 to 150 | °C |
| Storage Temperature Range | -65 to 150 | °C |
Key Features
- High Current Drive Capability: ±4 A peak current pulses to drive MOSFET gates efficiently.
- Unique Output Stage: BiPolar and MOSFET hybrid output stage for efficient current sourcing and sinking at low supply voltages.
- Enable Functions: Dual enable inputs (ENBA and ENBB) for better control over each driver channel, internally pulled up to VDD for active high logic.
- Fast Switching Times: Typical rise and fall times of 20 ns and 15 ns, respectively, with a 1.8 nF load.
- TTL/CMOS Compatible Inputs: Inputs are compatible with TTL/CMOS logic levels, independent of supply voltage.
- Thermally Enhanced Package: Available in MSOP PowerPAD™ package, SOIC-8, and PDIP-8 packages to improve thermal performance.
- Low Shoot-Through Current: Design minimizes shoot-through current during MOSFET switching transitions.
Applications
- Switch Mode Power Supplies: Ideal for high-frequency switching applications.
- DC/DC Converters: Used in various DC/DC converter topologies for efficient power conversion.
- Motor Controllers: Suitable for driving power MOSFETs in motor control circuits.
- Line Drivers: Can be used as line drivers in high-speed communication systems.
- Class D Switching Amplifiers: Used in audio amplifiers and other high-power switching applications.
Q & A
- What is the maximum supply voltage for the UCC27425PG4?
The maximum supply voltage is 15 V.
- What is the peak output current capability of the UCC27425PG4?
The device can deliver ±4 A peak current pulses.
- What are the typical rise and fall times of the UCC27425PG4?
The typical rise time is 20 ns, and the typical fall time is 15 ns with a 1.8 nF load.
- What are the enable functions on the UCC27425PG4?
The device has dual enable inputs (ENBA and ENBB) that are internally pulled up to VDD for active high logic.
- What are the common applications of the UCC27425PG4?
Common applications include switch mode power supplies, DC/DC converters, motor controllers, line drivers, and Class D switching amplifiers.
- What packages are available for the UCC27425PG4?
The device is available in MSOP PowerPAD™, SOIC-8, and PDIP-8 packages.
- How does the UCC27425PG4 minimize shoot-through current?
The device is designed to inherently minimize shoot-through current during MOSFET switching transitions.
- What is the operating temperature range of the UCC27425PG4?
The operating temperature range is -40°C to 125°C.
- Can the outputs of the UCC27425PG4 be paralleled for higher drive current?
Yes, the dual outputs can be paralleled to achieve higher drive current.
- What is the significance of the BiPolar and MOSFET hybrid output stage in the UCC27425PG4?
This output stage allows for efficient current sourcing and sinking at low supply voltages.
