Overview
The TPS48111LQDGXRQ1 is an automotive-qualified, high-side N-channel MOSFET gate driver designed for switching loads up to 100 V. With a peak gate-source voltage capability of 10 V, fast turn-on/turn-off performance, and extended operating temperature support, it enables efficient and reliable driving of high-current MOSFETs in automotive, industrial, and battery-powered applications. The device provides strong protection features including reverse-battery tolerance, undervoltage lockout, and robust gate drive control, making it suitable for harsh environments and safety-critical designs.
Core Parameters
| Parameter | Specification |
|---|---|
| Operating Supply Voltage | 4.5 V to 65 V |
| Absolute Max Switching Voltage | 100 V |
| Peak Gate Drive Voltage | 10 V |
| Peak Source Current | 1.3 A |
| Peak Sink Current | 2 A |
| Reverse Battery Protection | –36 V |
| Turn-on Propagation Delay | 15 ns typical |
| Turn-off Propagation Delay | 20 ns typical |
| Operating Temperature | –40°C to +150°C |
| Package | VSON-10 (QFN 3 × 3 mm) |
Features
- 100-V capable high-side MOSFET driver, suitable for 12-V, 24-V, and 48-V automotive loads
- Fast switching with 15-ns turn-on and 20-ns turn-off for efficient power control
- Strong drive capability (1.3 A source, 2 A sink) supporting large MOSFET gates
- Reverse battery protection to –36 V, ideal for automotive power rails
- Input threshold compatible with logic-level control
- Integrated active clamp to protect against overshoot conditions
- Supports PWM control, enabling high-frequency operation
- AEC-Q100 qualified, ensuring reliability in automotive environments
- Compact 3 × 3 mm VSON package reduces PCB area while maintaining thermal performance
Typical Application Scenarios
| Application | Why TPS48111LQDGXRQ1 Fits |
|---|---|
| Automotive High-Side Switching | Reverse battery rating and 100-V capability meet automotive load-switching demands |
| 48-V Mild Hybrid Systems | Drives large MOSFETs with high current and fast switching |
| Motor & Solenoid Control | Strong gate drive and short delays suit inductive loads |
| Battery Management Systems | Handles high-voltage switching safely and efficiently |
| Industrial Power Distribution | Rugged protection and wide voltage support |
| High-Frequency Load Switching | Fast gate transitions enable high-speed PWM designs |
The TPS48111LQDGXRQ1 is a high-speed automotive-grade gate driver designed to drive external MOSFETs in high-current power distribution and protection circuits. In many automotive load-switch and eFuse designs, it is commonly paired with low-RDS(on) power MOSFETs such as SI7461DP-T1-GE3, enabling fast switching, precise current control, and robust protection performance under harsh operating conditions.
Performance Comparison
| Feature | TPS48111LQDGXRQ1 | Standard High-Side Driver | Automotive-Grade Competitor |
|---|---|---|---|
| Max Voltage | 100 V | 40–80 V | 100–150 V |
| Reverse Battery | –36 V | –10 to –20 V | –20 to –36 V |
| Drive Strength | 1.3 A / 2 A | 0.5–1 A | 1–2 A |
| Switching Speed | 15–20 ns | 50–200 ns | 20–40 ns |
| AEC-Q100 | Yes | Not always | Yes |
TPS48111LQDGXRQ1 stands out for its fast speed, high robustness, and strong protection mechanisms, making it especially suitable for demanding automotive applications.
Conclusion
The TPS48111LQDGXRQ1 is a compact, fast, and highly reliable high-side MOSFET driver designed for modern automotive and industrial systems. With its 100-V capability, fast propagation times, reverse-battery protection, and robust current drive, it enables efficient control of high-current MOSFETs in challenging environments. This device is an excellent fit for automotive switching modules, motor control units, BMS systems, and power distribution networks requiring long-term reliability.
Manufacturer Profile
The TPS48111LQDGXRQ1 is produced by Texas Instruments (TI), a global leader in high-performance analog and power-management devices. TI’s automotive-grade components are known for reliability, precision, and rigorous qualification, supporting applications from powertrains to ADAS and industrial power systems.
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