Overview
The UCC27531-Q1, produced by Texas Instruments, is a high-speed, single-channel gate driver designed for driving MOSFET and IGBT power switches. This device is particularly suited for automotive applications and is AEC-Q100 qualified. It features a compact 6-pin SOT-23 (DBV) package and operates over a wide temperature range of –40°C to 140°C. The UCC27531-Q1 offers asymmetrical drive capabilities with up to 2.5-A source and 5-A sink peak current, enhancing immunity against parasitic Miller turn-on effects. The driver also includes split-output options, enabling independent control of turn-on and turn-off currents, and features rail-to-rail drive capability with extremely small propagation delays.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Source Current | - | 2.5 | - | A |
| Sink Current | - | 5 | - | A |
| VDD Supply Voltage | 10 | - | 35 | V |
| UVLO Threshold | 8 | 8.9 | 9.8 | V |
| Propagation Delay | - | 17 | - | ns |
| Rise and Fall Times (with 1800-pF Load) | - | 15 ns / 7 ns | - | ns |
| Operating Temperature Range | -40 | - | 140 | °C |
| Package Type | - | - | - | 6-pin SOT-23 (DBV) |
Key Features
- Asymmetrical Drive Capability: Up to 2.5-A source and 5-A sink peak current, enhancing immunity against parasitic Miller turn-on effects.
- Split-Output Configuration: Allows independent control of turn-on and turn-off currents through OUTH and OUTL pins.
- Rail-to-Rail Drive Capability: With extremely small propagation delays, typically 17 ns.
- TTL and CMOS Compatible Input Logic: Fixed and independent of VDD supply voltage, with 1-V typical hysteresis for excellent noise immunity.
- Enable Pin with Fixed TTL Compatible Threshold: Internally pulled up; pulling the EN pin low disables the driver.
- Undervoltage Lockout (UVLO): Holds output low until VDD supply voltage is within the operating range.
- Low-Cost, Space-Saving Package: 6-pin SOT-23 (DBV) package.
- Wide Operating Temperature Range: –40°C to 140°C.
Applications
- Automotive Systems: Qualified for automotive applications and AEC-Q100 certified.
- Switch-Mode Power Supplies: Suitable for high-speed switching applications.
- MOSFET and IGBT Power Switches: Effective in driving both MOSFET and IGBT power switches.
- High-Side or Low-Side Driver: Can be used as either high-side or low-side driver with proper bias and signal isolation.
Q & A
- What is the maximum source and sink current of the UCC27531-Q1?
The UCC27531-Q1 can source up to 2.5-A and sink up to 5-A peak current.
- What is the operating temperature range of the UCC27531-Q1?
The device operates over a temperature range of –40°C to 140°C.
- What is the purpose of the split-output configuration in the UCC27531-Q1?
The split-output configuration allows for independent control of turn-on and turn-off currents through the OUTH and OUTL pins.
- What is the propagation delay of the UCC27531-Q1?
The propagation delay is typically 17 ns.
- Is the UCC27531-Q1 compatible with TTL and CMOS logic?
Yes, the input logic is TTL and CMOS compatible, with a fixed threshold independent of VDD supply voltage.
- What is the function of the EN pin in the UCC27531-Q1?
The EN pin is used to enable or disable the driver. It is internally pulled up, and pulling it low disables the driver.
- What is the UVLO threshold of the UCC27531-Q1?
The UVLO threshold is between 8 V and 9.8 V.
- Can the UCC27531-Q1 be used in high-side or low-side configurations?
Yes, it can be used in both high-side and low-side configurations with proper bias and signal isolation.
- What is the package type of the UCC27531-Q1?
The device is available in a 6-pin SOT-23 (DBV) package.
- Is the UCC27531-Q1 qualified for automotive applications?
Yes, it is AEC-Q100 qualified and suitable for automotive applications.
