Overview
The UCC27425, produced by Texas Instruments, is a high-speed dual MOSFET driver that is part of the UCC2742x family. This device is designed to deliver large peak currents into capacitive loads, making it suitable for applications requiring high current drive capabilities. The UCC27425 is available in various packages, including the thermally enhanced 8-pin PowerPAD™ MSOP package, standard SOIC-8, and PDIP-8 packages. This design minimizes shoot-through current and provides efficient current sourcing and sinking at low supply voltages, enhancing long-term reliability and performance.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | 8-SOIC, 8-PDIP, 8-MSOP PowerPAD™ | - |
| Operating Temperature Range | -40 to 125 | °C |
| Supply Voltage | 4 to 15 | V |
| Peak Output Current (Source, Sink) | ±4 A | A |
| Rise Time (Typical) | 20 ns | ns |
| Fall Time (Typical) | 15 ns | ns |
| Propagation Delay Time (Typical) | 25 ns (Input Falling), 35 ns (Input Rising) | ns |
| Input Type | Inverting, Non-Inverting | - |
| Logic Voltage - VIL, VIH | 1 V, 2 V | V |
| Mounting Type | Surface Mount | - |
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
- Dual outputs can be paralleled for higher drive current
- Available in thermally enhanced MSOP PowerPAD™ package
- Rated from –40°C to 125°C
Applications
The UCC27425 is suitable for various high-speed applications, including:
- Class D switching amplifiers
- High-frequency power supplies
- Motor control systems
- Power management systems requiring high current drive capabilities
Q & A
- What is the peak output current of the UCC27425?
The UCC27425 can deliver a peak output current of ±4 A.
- What are the available package options for the UCC27425?
The UCC27425 is available in 8-SOIC, 8-PDIP, and 8-MSOP PowerPAD™ packages.
- What is the operating temperature range of the UCC27425?
The operating temperature range is from –40°C to 125°C.
- What is the supply voltage range for the UCC27425?
The supply voltage range is from 4 V to 15 V.
- What are the typical rise and fall times of the UCC27425?
The typical rise time is 20 ns, and the typical fall time is 15 ns with a 1.8-nF load.
- Does the UCC27425 support TTL/CMOS compatible inputs?
- Can the dual outputs of the UCC27425 be paralleled for higher drive current?
- What is the purpose of the enable functions (ENBA and ENBB) in the UCC27425?
The enable functions provide better control over the operation of the driver applications and are internally pulled up to V_DD for active high logic.
- What types of logic options are available for the UCC27425?
The UCC27425 offers dual-inverting, dual-noninverting, and one-inverting and one-noninverting driver logic options.
- How does the UCC27425 minimize shoot-through current?
The UCC27425 uses a design that inherently minimizes shoot-through current, delivering high current where it is needed most during the MOSFET switching transition.
