Overview
The UCC27524A, 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 a robust component for various high-frequency switching power circuits. This device is part of the UCC2752x family and is distinguished by its ability to handle negative voltages (–5V) directly at the input pins, enhancing its robustness. The UCC27524A features a non-inverting configuration, minimizing shoot-through current and offering rail-to-rail drive capability with extremely small propagation delays.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Peak Source and Sink Drive Current | 5A | A |
| Supply Voltage Range | 4.5 to 18V | V |
| Propagation Delay (Typical) | 17ns | ns |
| Rise Time (Typical) | 6ns | ns |
| Fall Time (Typical) | 10ns | ns |
| Delay Matching Between Channels (Typical) | 1ns | ns |
| Operating Junction Temperature Range | –40 to 150°C | °C |
| Package Options | SOIC-8, HVSSOP-8 PowerPAD™ |
Key Features
- Industry-standard pin out
- Two independent gate-drive channels
- 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
- Outputs held low during VDD-UVLO (ensures glitch-free operation at power up and power down)
- Fast rise and fall times
- Outputs can be paralleled for higher drive current
- Outputs held in low when inputs are floating
Applications
- Switch-mode power supplies
- 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 peak source and sink drive current of the UCC27524A?
The peak source and sink drive current of the UCC27524A is 5A.
- What is the supply voltage range for the UCC27524A?
The supply voltage range for the UCC27524A is 4.5V to 18V.
- What is the typical propagation delay of the UCC27524A?
The typical propagation delay of the UCC27524A is 17ns.
- Can the UCC27524A handle negative voltages at the inputs?
Yes, the UCC27524A can handle negative voltages (–5V) directly at the input pins.
- What are the package options for the UCC27524A?
The package options for the UCC27524A include SOIC-8 and HVSSOP-8 PowerPAD™.
- What is the operating junction temperature range for the UCC27524A?
The operating junction temperature range for the UCC27524A is –40 to 150°C.
- How does the UCC27524A ensure glitch-free operation during power up and power down?
The UCC27524A ensures glitch-free operation during power up and power down by holding the outputs low during VDD-UVLO.
- Can the outputs of the UCC27524A be paralleled for higher drive current?
Yes, the outputs of the UCC27524A can be paralleled to increase the current-drive capability.
- What type of logic thresholds does the UCC27524A use?
The UCC27524A uses TTL and CMOS compatible logic thresholds that are independent of the supply voltage.
- What is the significance of the hysteretic-logic thresholds in the UCC27524A?
The hysteretic-logic thresholds in the UCC27524A offer high noise immunity.
