Overview
The UCC27322D, produced by Texas Instruments, is a high-speed, low-side MOSFET driver integrated circuit. This device is part of the UCC2732x/UCC3732x family, known for its high peak current drive capability and efficient constant current sourcing. The UCC27322D features a unique hybrid output stage combining bipolar and CMOS transistors, known as TrueDrive, which allows for efficient current delivery even at low supply voltages. It is designed to drive large MOSFETs in applications requiring high dV/dt transitions, thereby eliminating the need for additional external circuits and reducing design complexity and assembly costs.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VDD) | 4 | - | 15 | V |
| Peak Output Current (IOUT) | - | - | 9 | A |
| Input Voltage (VIN) | -0.3 | - | VDD + 0.3 | V |
| Enable Voltage (ENBL) | -0.3 | - | VDD + 0.3 | V |
| Rise Time (tR) | 20 | - | 70 | ns |
| Fall Time (tF) | 20 | - | 30 | ns |
| Propagation Delay Time (tD1, tD2) | 25 | - | 70 | ns |
| Junction Operating Temperature (TJ) | -55 | - | 150 | °C |
| Storage Temperature (Tstg) | -65 | - | 150 | °C |
Key Features
- Industry-standard pin-out with an additional enable function.
- High-peak current drive capability of ±9 A at the Miller plateau region using TrueDrive technology.
- Efficient constant current sourcing using a unique bipolar and CMOS output stage.
- TTL/CMOS compatible inputs independent of supply voltage.
- Typical rise and fall times of 20 ns with a 10-nF load.
- Propagation delay times of 25 ns (rising) and 35 ns (falling).
- Available in thermally enhanced MSOP PowerPAD™ package and 8-pin SOIC and PDIP packages.
- Latch-up and ESD protection circuitries included.
- Pb-free finish on packages.
Applications
- Switch mode power supplies.
- DC-DC converters.
- Motor controllers.
- Class-D switching amplifiers.
- Line drivers.
- Pulse transformer drivers.
Q & A
- What is the peak output current of the UCC27322D?
The UCC27322D has a peak output current of ±9 A.
- What are the typical rise and fall times of the UCC27322D?
The typical rise and fall times are 20 ns each with a 10-nF load.
- What is the operating temperature range of the UCC27322D?
The junction operating temperature range is from –55°C to 150°C.
- What packages are available for the UCC27322D?
The device is available in 8-pin SOIC, PDIP, and thermally enhanced MSOP PowerPAD™ packages.
- Does the UCC27322D have ESD protection?
- What is the supply voltage range for the UCC27322D?
The supply voltage range is from 4 V to 15 V.
- Is the UCC27322D Pb-free?
- What is the purpose of the enable function in the UCC27322D?
The enable function provides better control over the operation of the driver applications and is implemented on pin 3.
- What are some common applications of the UCC27322D?
- How does the TrueDrive technology benefit the UCC27322D?
