Overview
The UCC27211A-Q1 is a high-performance, automotive-grade half-bridge gate driver designed by Texas Instruments. This device is an enhancement of the popular UCC27201 MOSFET drivers, offering significant performance improvements. It is AEC-Q100 qualified for automotive applications, ensuring reliability and robustness in harsh environments with a junction temperature range of –40°C to +150°C. The UCC27211A-Q1 is optimized for driving large power MOSFETs in various configurations such as half-bridge, full-bridge, push-pull, two-switch forward, and active clamp forward converters.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Drivers | 2 |
| Number of Outputs | 2 |
| Output Current | 4 A (3.7A source, 4.5A sink) |
| Supply Voltage (Min) | 8 V |
| Supply Voltage (Max) | Up to 120 V for high-side driver |
| Input Voltage Range | –10 V to 20 V |
| Undervoltage Lockout (UVLO) | VDD: 7 V with 0.5 V hysteresis; VHB: 6.7 V with 1.1 V hysteresis |
| Propagation Delay | Matched to 4 ns between turn on and turn off |
| Bootstrap Diode | On-chip 120 V rated bootstrap diode |
| Package Options | DDA (PowerPAD™ SOIC, 8), D (SOIC, 8) |
| Body Size | 4.9mm × 3.9mm |
Key Features
- High Current Capability: Peak output pullup and pulldown current of 3.7A source and 4.5A sink, respectively, to drive large power MOSFETs with minimized switching losses.
- Robust Input Structure: Inputs can handle –10 VDC to 20 VDC, allowing direct interface to gate-drive transformers without rectification diodes.
- Increased Hysteresis: TTL compatible inputs with increased hysteresis for enhanced noise immunity and compatibility with analog or digital PWM controllers.
- Independent Control: Low-side and high-side gate drivers are independently controlled and matched to 4 ns between turn on and turn off.
- On-Chip Bootstrap Diode: Eliminates the need for external discrete diodes, providing fast recovery times and low diode resistance.
- Undervoltage Lockout (UVLO): Provides symmetric turn on and turn off behavior and forces outputs low if the drive voltage is below the specified threshold.
- Negative Voltage Handling: The switching node (HS pin) can handle –(24 - VDD) V maximum, protecting the high-side channel from negative voltages caused by parasitic inductance and stray capacitance.
Applications
- Automotive Systems: AEC-Q100 qualified, making it suitable for various automotive applications.
- Half-Bridge, Full-Bridge, Push-Pull, Two-Switch Forward, and Active Clamp Forward Converters: Ideal for driving N-Channel MOSFETs in these configurations.
- High-Frequency Switching Power Circuits: Optimized for efficient and reliable operation in high-frequency switching applications.
Q & A
- What is the peak output current capability of the UCC27211A-Q1?
The UCC27211A-Q1 has a peak output pullup current of 3.7A and a peak output pulldown current of 4.5A.
- What is the input voltage range of the UCC27211A-Q1?
The inputs can handle –10 VDC to 20 VDC.
- Does the UCC27211A-Q1 have built-in undervoltage lockout (UVLO) protection?
Yes, the UCC27211A-Q1 has UVLO protection for both the high-side and low-side drivers.
- What is the maximum supply voltage for the high-side driver?
The high-side driver can operate with supply voltages up to 120 V.
- Is the UCC27211A-Q1 compatible with analog or digital PWM controllers?
Yes, it is compatible with both analog and digital PWM controllers due to its TTL compatible inputs with increased hysteresis.
- Does the UCC27211A-Q1 have an on-chip bootstrap diode?
Yes, it features an on-chip 120 V rated bootstrap diode.
- What is the propagation delay matching between the turn on and turn off of the drivers?
The propagation delay is matched to 4 ns between the turn on and turn off of the drivers.
- What are the package options available for the UCC27211A-Q1?
The available packages include DDA (PowerPAD™ SOIC, 8) and D (SOIC, 8).
- What is the body size of the UCC27211A-Q1 packages?
The body size is 4.9mm × 3.9mm.
- Is the UCC27211A-Q1 AEC-Q100 qualified?
Yes, it is AEC-Q100 qualified for automotive applications.
