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DRV2911-Q1
Automotive, single-channel PWM-input piezoelectric transducer driver for ultrasonic cleaning
Data sheet
DRV2911-Q1
- AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C ≤ TA ≤ 125°C
- Wettable flank package
- 2-Channel half bridge driver
- PWM-inputs for each half bridge control
- Overcurrent protection
- Supports up to 200kHz PWM frequency
- 5V to 35V operating voltage (40V abs max)
- High output current capability: 8A Peak
- Low MOSFET on-state resistance
- 95mΩ (typ.) RDS(ON) (HS + LS) at TA = 25°C
- Low power sleep mode
- 2.5µA (max.) at VPVDD = 13.5V, TA = 25°C
- Supports 1.8V, 3.3V, and 5V logic inputs
- Built-in 3.3V, 30mA LDO regulator
- Integrated protection features
- Supply undervoltage lockout (UVLO)
- Charge pump undervoltage (CPUV)
- Overcurrent protection (OCP)
- Thermal warning and shutdown (OTW/OTSD)
- Fault condition indication pin (FAULTZ)
DRV2911-Q1 integrates two H-bridges for driving piezo-based Lens Cover Systems, LCS, up to 40V absolute maximum capability while maintaining a very low RDS(ON) to reduce switching losses. DRV2911-Q1 integrates a power management LDO (3.3V / 30mA) and buck converter (5.0V to 5.7V, ≤200mA) that can be used to power external circuits like the Ultrasonic Lens Cleaning (ULC) controller, ULC1001.
Each output driver channel consists of N-channel power MOSFETs configured in a half-bridge configuration. Two independent PWM inputs drive each half-bridge. The DRV2911-Q1 includes a 30mA, 3.3V LDO regulator.
Several protection features including supply undervoltage lockout (UVLO), charge pump undervoltage (CPUV), overcurrent protection (OCP), over-temperature warning (OTW), and over-temperature shutdown (OTSD) are integrated into DRV2911-Q1 to protect the device and system against fault events. Fault conditions are indicated by the FAULTZ pin. The fault pin can also be tied to the controller device, like ULC1001-Q1, where a fault can be recognized over I2C.
Technical documentation
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View all 1 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | DRV2911-Q1 Full-Bridge PWM Input Piezo Driver for Ultrasonic Lens Cleaning datasheet | PDF | HTML | 25 Jun 2024 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
ULC1001-DRV2911EVM — ULC1001 and DRV2911 evaluation module
The ULC1001-DRV2911EVM is an ultrasonic lens cleaning (ULC) evaluation module (EVM) showcasing the automotive grade two-chip solution of the ULC1001 DSP controller and the DRV2911 piezo driver. The pair work together to provide self-cleaning functionality with features like temperature detection, (...)
Evaluation board
ULC-HPB-DEMO — 2-MP camera with integrated ultrasonic lens cleaning and mini spray bottle
The ULC-HPB-DEMO is a collaboration between Texas Instruments and HPB Optoelectronics to create an all-in-one evaluation system for ultrasonic lens cleaning (ULC). The construction of the demonstration kit is completed by HPB Optoelectronics. Also known as the Executive Demo, this demo is simple (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN (RGF) | 40 | Ultra Librarian |
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