Overview
The UCC27324DGNRG4, produced by Texas Instruments, is a high-speed dual-MOSFET driver that belongs to the UCC2732x and UCC3732x family. This device is designed to deliver 4-A source and 4-A sink peak current, making it highly effective for driving MOSFETs, particularly during the critical Miller plateau region. The UCC27324 features a unique Bi-CMOS output architecture, combining bipolar and MOSFET transistors to ensure efficient current sourcing and sinking even at low supply voltages. It is available in the thermally enhanced MSOP-PowerPAD package, which significantly reduces thermal resistance and improves long-term reliability.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VDD) | -0.3 | 16 | V | |
| Junction Operating Temperature (TJ) | -55 | 150 | °C | |
| Output Current (OUTA, OUTB) DC | 0.2 | A | ||
| Output Current (OUTA, OUTB) Pulsed (0.5 µs) | 4.5 | A | ||
| Rise/Fall Times @ 1.8 nF load | 20 | 15 | ns | |
| Propagation Delay | 35 | 25 | ns | |
| Input Thresholds (VIN_H, VIN_L) | 1.6, 0.8 | 2.2, 1.2 | 2.5, 1.5 | V |
| Output Resistance High (ROH) | 0.6 | 1.5 | Ω | |
| Output Resistance Low (ROL) | 0.4 | 1 | Ω | |
| Package Type | MSOP-PowerPAD | |||
| Package Dimensions | 3.00 mm × 3.00 mm |
Key Features
- Bi-CMOS output architecture combining bipolar and MOSFET transistors for efficient current sourcing and sinking.
- ±4 A drive current at the Miller plateau region.
- Constant-current drive even at low supply voltages.
- Outputs can be paralleled for higher drive current.
- TTL/CMOS inputs independent of supply voltage with wide input hysteresis for excellent noise immunity.
- Available in thermally enhanced MSOP-PowerPAD package.
- Industry-standard pin-out.
- No external Schottky-clamp diodes required in many cases due to low impedance to overshoot and undershoot.
Applications
- Switch-mode power supplies.
- DC-DC converters.
- Solar inverters.
- Motor control systems.
- Uninterruptible power supplies (UPS).
Q & A
- What is the peak output current of the UCC27324DGNRG4?
The UCC27324DGNRG4 can deliver up to 4-A peak current pulses.
- What are the input threshold voltages for the UCC27324DGNRG4?
The input threshold voltages are between 1.6 V and 2.5 V for logic 1 and between 0.8 V and 1.5 V for logic 0.
- What is the operating temperature range for the UCC27324DGNRG4?
The junction operating temperature range is from -55°C to 150°C.
- What package types are available for the UCC27324DGNRG4?
The device is available in the MSOP-PowerPAD package.
- Can the outputs of the UCC27324DGNRG4 be paralleled?
- What are the typical applications of the UCC27324DGNRG4?
Typical applications include switch-mode power supplies, DC-DC converters, solar inverters, motor control systems, and UPS.
- Does the UCC27324DGNRG4 require external Schottky-clamp diodes?
In many cases, no external Schottky-clamp diodes are required due to the low impedance to overshoot and undershoot.
- What is the thermal resistance of the MSOP-PowerPAD package?
The junction-to-ambient thermal resistance (RθJA) for the MSOP-PowerPAD package is approximately 56.6°C/W.
- How do the input stages of the UCC27324DGNRG4 handle reverse current?
The input stages are designed to withstand 500-mA reverse current without damage or logic upset.
- What is the significance of the Bi-CMOS output architecture in the UCC27324DGNRG4?
The Bi-CMOS output architecture combines bipolar and MOSFET transistors, allowing for efficient current sourcing and sinking even at low supply voltages.
