Overview
The UCC27524DR, produced by Texas Instruments, is a dual-channel, high-speed, low-side gate-driver device. It is designed to effectively drive MOSFET and IGBT power switches, making it suitable for a variety of high-performance applications. The device features two independent gate-drive channels, each capable of delivering high-peak current pulses of up to 5A source and 5A sink into capacitive loads. This capability, combined with its rail-to-rail drive and extremely small propagation delay, makes the UCC27524DR an ideal choice for applications requiring precise timing and high current drive capability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VDD) | –0.3 to 20 | V |
| Output Voltage (OUTA, OUTB) | –0.3 to VDD + 0.3 | V |
| Repetitive Pulse Voltage (less than 200 ns) | –2 to VDD + 0.3 | V |
| Output Continuous Source/Sink Current (IOUT_DC) | 0.3 | A |
| Output Pulsed Source/Sink Current (IOUT_pulsed, 0.5 µs) | 5 | A |
| Input Voltage (INA, INB, ENA, ENB) | –5 to 20 | V |
| Operating Virtual Junction Temperature (TJ) | –40 to 150 | °C |
| Storage Temperature (Tstg) | –65 to 150 | °C |
| Propagation Delay | Typically 17 ns | ns |
| Rise and Fall Times | Typically 6 ns and 10 ns | ns |
| Delay Matching Between Channels | Typically 1 ns | ns |
Key Features
- Industry-standard pin out
- Two independent gate-drive channels
- 5A peak source and sink-drive current
- Independent-enable function for each output
- TTL and CMOS compatible logic threshold independent of supply voltage
- Hysteretic-logic thresholds for high noise immunity
- Ability to handle negative voltages (–5V) at inputs
- Inputs and enable pin-voltage levels not restricted by VDD pin bias supply voltage
- 4.5V to 18V single-supply range
- Outputs held low during VDD-UVLO (ensures glitch-free operation at power up and power down)
- Fast propagation delays (17ns typical) and rise and fall times (6ns and 10ns typical)
- 1ns typical delay matching between two channels
- Ability to connect two channels in parallel for higher drive current or drive two switches in parallel with a single input signal
Applications
- DC-to-DC converters
- Motor control and solar power systems
- Gate drive for emerging wide band-gap power devices such as GaN
- Synchronous rectifiers and other applications requiring dual-gate drives with critical timing
Q & A
- What is the UCC27524DR used for?
The UCC27524DR is a dual-channel, high-speed, low-side gate-driver device used to drive MOSFET and IGBT power switches in various high-performance applications.
- What is the peak current drive capability of the UCC27524DR?
The UCC27524DR can deliver high-peak current pulses of up to 5A source and 5A sink into capacitive loads.
- What is the propagation delay of the UCC27524DR?
The propagation delay is typically 17 ns.
- Can the UCC27524DR handle negative voltages at the input pins?
- What is the supply voltage range for the UCC27524DR?
The UCC27524DR operates within a single-supply range of 4.5V to 18V.
- How does the UCC27524DR ensure glitch-free operation during power up and power down?
The outputs are held low during VDD-UVLO, ensuring glitch-free operation at power up and power down.
- Can the channels of the UCC27524DR be connected in parallel?
- What logic compatibility does the UCC27524DR have?
The UCC27524DR has TTL and CMOS compatible logic thresholds independent of the supply voltage.
- How does the UCC27524DR protect against floating input conditions?
The device features internal pull-up and pull-down resistors on the input pins to ensure that outputs are held low when the input pins are in a floating condition.
- What are the available package options for the UCC27524DR?
The UCC27524DR is available in SOIC-8 (D), VSSOP-8 with exposed pad (DGN), and 3mm × 3mm WSON-8 with exposed pad (DSD) packages.
- What are some typical applications of the UCC27524DR?
Typical applications include DC-to-DC converters, motor control, solar power systems, and gate drive for emerging wide band-gap power devices such as GaN.
