Overview
The UCC27525DGN is a dual-channel, high-speed, low-side gate-driver device produced by Texas Instruments. It is part of the UCC2752x family, designed to effectively drive MOSFET and IGBT power switches. This device is notable for its high-peak current drive capability, rail-to-rail output drive, and extremely small propagation delays, making it suitable for applications requiring precise timing, such as synchronous rectifiers.
The UCC27525DGN features an industry-standard pinout and is available in an MSOP-8 package with an exposed pad, enhancing thermal performance. The device operates over a wide temperature range of –40°C to 140°C and supports a single-supply range of 4.5V to 18V.
Key Specifications
| Parameter | Typical Value | Unit |
|---|---|---|
| Package | MSOP-8 with exposed pad (DGN) | |
| Operating Temperature Range | –40°C to 140°C | °C |
| Supply Voltage Range | 4.5V to 18V | V |
| Peak Source and Sink Current | ±5A | A |
| Propagation Delay | 13ns | ns |
| Rise Time | 7ns | ns |
| Fall Time | 6ns | ns |
| Delay Matching Between Channels | 1ns | ns |
| Enable Signal High Threshold | 2.1V | V |
| Enable Signal Low Threshold | 1.15V | V |
| High Output Voltage | 0.075V (at IOUT = –10 mA) | V |
| Low Output Voltage | 0.01V (at IOUT = 10 mA) | V |
Key Features
- Industry-standard pinout
- Two independent gate-drive channels
- 5A peak source and sink-drive current
- Independent-enable function for each output
- TTL and CMOS compatible logic thresholds independent of supply voltage
- Hysteretic-logic thresholds for high noise immunity
- Fast propagation delays (13ns typical) and rise/fall times (7ns and 6ns typical)
- 1ns typical delay matching between the two channels
- Outputs held low during VDD-UVLO for glitch-free operation at power up and power down
- Outputs held low when inputs are floating
- Operating temperature range of –40°C to 140°C
Applications
- Synchronous rectifiers
- Driving MOSFET and IGBT power switches
- Emerging wide band-gap power devices such as GaN
- Power supplies requiring high-speed and low-side gate driving
- Solar power systems
- High-frequency switching applications
Q & A
- What is the UCC27525DGN used for?
The UCC27525DGN is used as a dual-channel, high-speed, low-side gate-driver device to drive MOSFET and IGBT power switches.
- What is the operating temperature range of the UCC27525DGN?
The operating temperature range is –40°C to 140°C.
- What is the peak source and sink current capability of the UCC27525DGN?
The device can deliver up to ±5A peak source and sink current.
- What is the typical propagation delay of the UCC27525DGN?
The typical propagation delay is 13ns.
- Does the UCC27525DGN have independent enable functions for each output?
Yes, the device features independent-enable functions for each output.
- What logic thresholds does the UCC27525DGN support?
The device supports TTL and CMOS compatible logic thresholds.
- How does the UCC27525DGN handle floating input conditions?
The outputs are held low when the input pins are in a floating condition.
- Can the UCC27525DGN be used in high-frequency switching applications?
Yes, it is suitable for high-frequency switching applications due to its fast rise and fall times.
- What package options are available for the UCC27525DGN?
The device is available in an MSOP-8 package with an exposed pad (DGN).
- Does the UCC27525DGN have built-in protection against voltage underlock (UVLO)?
Yes, the device has built-in UVLO protection to ensure glitch-free operation at power up and power down.
- What is the supply voltage range for the UCC27525DGN?
The supply voltage range is 4.5V to 18V.
