Overview
The UCC27511ADBVR, produced by Texas Instruments, is a single-channel high-speed low-side gate driver designed to drive MOSFETs, IGBTs, and emerging wide-bandgap power devices such as GaN. This device offers superior replacement for NPN and PNP discrete driver solutions, featuring fast rise and fall times, and low propagation delays. It operates over a wide supply voltage range of 4.5 V to 18 V and a temperature range of –40°C to 140°C, making it suitable for high-speed applications in various power management systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VDD) | 4.5 to 18 | V |
| Input Voltage (IN+, IN–) | –6 to 20 | V |
| Output Voltage (OUTH, OUTL) | –0.3 to VDD + 0.3 | V |
| Peak Source Current (OUTH) | 4 | A |
| Peak Sink Current (OUTL) | 8 | A |
| Propagation Delay | 13 | ns |
| Rise Time | 9 | ns |
| Fall Time | 7 | ns |
| Operating Temperature Range | –40 to 140 | °C |
| Package Type | 6-Pin DBV (SOT-23), 6-Pin DRS (3-mm × 3-mm WSON with Exposed Thermal Pad) |
Key Features
- High Source and Sink Current Capability: 4-A source and 8-A sink peak-drive current capability with asymmetrical drive, enhancing immunity against parasitic Miller turn-on effect.
- Fast Propagation Delays and Switching Times: Typical propagation delay of 13 ns, rise time of 9 ns, and fall time of 7 ns.
- Split Output Configuration: Allows independent adjustment of turn-on and turn-off speeds using separate resistors for OUTH and OUTL pins.
- Dual-Input Design: Choice of inverting (IN– pin) or non-inverting (IN+ pin) driver configuration, with the unused input pin usable for enable or disable functions.
- TTL and CMOS Compatible Input-Logic Threshold: Independent of supply voltage, with wide hysteresis for high noise immunity.
- Undervoltage Lockout (UVLO) Protection: Ensures glitch-free operation at power up and power down by holding outputs low outside the VDD operating range.
- Wide Operating Temperature Range: –40°C to 140°C, suitable for various environmental conditions.
Applications
- Switch-Mode Power Supplies: Ideal for high-speed switching applications.
- DC-to-DC Converters: Suitable for driving power switches in DC-DC conversion systems.
- Companion Gate-Driver Devices for Digital Power Controllers: Enhances the performance of digital power management systems.
- Solar Power, Motor Control, UPS: Used in various power management and control systems.
- Gate Driver for Emerging Wide Band-Gap Power Devices: Such as GaN power-semiconductor devices.
Q & A
- What is the supply voltage range of the UCC27511ADBVR?
The supply voltage range is from 4.5 V to 18 V.
- What are the peak source and sink current capabilities of the UCC27511ADBVR?
The device can source up to 4 A and sink up to 8 A.
- What is the typical propagation delay of the UCC27511ADBVR?
The typical propagation delay is 13 ns.
- Can the UCC27511ADBVR operate with both inverting and non-inverting input configurations?
Yes, it offers a dual-input design with both inverting (IN– pin) and non-inverting (IN+ pin) configurations.
- What is the purpose of the split output configuration in the UCC27511ADBVR?
The split output configuration allows for independent adjustment of turn-on and turn-off speeds using separate resistors for OUTH and OUTL pins.
- How does the UCC27511ADBVR handle undervoltage conditions?
The device features an undervoltage lockout (UVLO) protection that holds the outputs low outside the VDD operating range, ensuring glitch-free operation at power up and power down.
- What is the operating temperature range of the UCC27511ADBVR?
The operating temperature range is from –40°C to 140°C.
- Can the unused input pin be used for other functions?
Yes, the unused input pin can be used for enable or disable functions.
- What type of logic thresholds does the UCC27511ADBVR use?
The device uses TTL and CMOS compatible input-logic thresholds, which are independent of the supply voltage and feature wide hysteresis for high noise immunity.
- What are some common applications of the UCC27511ADBVR?
Common applications include switch-mode power supplies, DC-to-DC converters, digital power controllers, solar power systems, motor control, UPS, and gate drivers for emerging wide band-gap power devices.
