Overview
The UCC27211DR is a high-frequency half-bridge gate driver IC produced by Texas Instruments. It is designed to drive two N-channel MOSFETs in high-side and low-side configurations with independent inputs. This driver is an enhancement of the popular UCC27201 series, offering significant performance improvements such as increased peak output currents and enhanced robustness against negative voltages and noise.
The UCC27211DR is particularly suited for applications requiring high current drive capabilities, fast switching times, and robust input handling. It operates over a wide temperature range from –40°C to 150°C, making it versatile for various industrial and automotive applications.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOIC-8, PowerPAD™ SOIC-8, 4mm × 4mm SON-8, 4mm × 4mm SON-10 |
| Operating Temperature Range (°C) | –40 to 150 |
| Maximum Boot Voltage (V DC) | 120 |
| Output Currents (A) | 3.7A source, 4.5A sink |
| Input Voltage Range (V) | –10 to 20 |
| VDD Operating Range (V) | 8 to 17 (20V absolute maximum) |
| Rise and Fall Times (ns) with 1000pF load | 7.2ns rise, 5.5ns fall |
| Propagation Delay Times (ns) | 20ns typical |
| Delay Matching (ns) | 4ns |
| Undervoltage Lockout (UVLO) | Symmetric for high-side and low-side drivers |
Key Features
- Drives two N-channel MOSFETs in high-side and low-side configuration with independent inputs.
- Maximum boot voltage of 120V DC.
- High output currents: 3.7A source and 4.5A sink.
- Input pins can tolerate –10V to 20V and are independent of supply voltage range.
- TTL compatible input versions.
- Fast rise and fall times: 7.2ns rise and 5.5ns fall with 1000pF load.
- Fast propagation delay times: 20ns typical.
- 4ns delay matching between high-side and low-side drivers.
- Symmetrical undervoltage lockout for both high-side and low-side drivers.
- On-chip 120V rated bootstrap diode eliminates the need for external discrete diodes.
- Available in various industry-standard packages.
Applications
The UCC27211DR is suitable for a variety of high-frequency switching applications, including:
- Power supplies and DC-DC converters.
- Motor control and drive systems.
- Automotive systems requiring high reliability and robustness.
- Industrial power management systems.
- High-frequency switching circuits where fast propagation delay and low switching losses are critical.
Q & A
- What is the maximum boot voltage of the UCC27211DR?
The maximum boot voltage is 120V DC.
- What are the output current capabilities of the UCC27211DR?
The UCC27211DR can source 3.7A and sink 4.5A.
- What is the operating temperature range of the UCC27211DR?
The operating temperature range is from –40°C to 150°C.
- What types of input signals can the UCC27211DR handle?
The UCC27211DR can handle TTL compatible input signals and can tolerate –10V to 20V on the input pins.
- What is the significance of the on-chip bootstrap diode in the UCC27211DR?
The on-chip 120V rated bootstrap diode eliminates the need for external discrete diodes, simplifying the circuit design.
- How does the UCC27211DR protect against undervoltage conditions?
The UCC27211DR features symmetrical undervoltage lockout for both high-side and low-side drivers, forcing the outputs low if the drive voltage is below the specified threshold.
- What are the typical propagation delay times of the UCC27211DR?
The typical propagation delay times are 20ns.
- What is the delay matching between the high-side and low-side drivers?
The delay matching is 4ns between the turn-on and turn-off of each driver.
- In what packages is the UCC27211DR available?
The UCC27211DR is available in SOIC-8, PowerPAD™ SOIC-8, 4mm × 4mm SON-8, and 4mm × 4mm SON-10 packages.
- Why is the UCC27211DR suitable for high-frequency switching applications?
The UCC27211DR is suitable due to its fast rise and fall times, low propagation delay, and high output current capabilities, making it ideal for applications requiring fast and efficient switching.
