Texas Instruments DRV2901DDVR

Overview

DRV2901DDVR from Texas Instruments is a single-channel PWM-input piezoelectric transducer driver optimized for ultrasonic lens cleaning in optical systems. It operates from 12V to 48V PVDD, delivers up to 50W peak power, integrates 90mΩ high-side/low-side MOSFETs, and features on-chip overtemperature, undervoltage, short-circuit, and programmable overcurrent protection. It targets compact, high-reliability camera modules requiring self-contained fault management.

For engineers reviewing the DRV2901DDVR datasheet, DRV2901DDVR pinout, DRV2901DDVR application, or DRV2901DDVR equivalent, key selection criteria include its dual-supply architecture (12V GVDD/VDD + 12–48V PVDD), 44-pin HTSSOP thermal performance (RθJA = 50.7°C/W), integrated bootstrap gate drive, and programmable OC threshold via external resistor on OC_ADJ.

Technical Context

The DRV2901DDVR implements two independent half-bridge power stages (OUT_A/OUT_B) with internal 90mΩ MOSFETs, each driven by dedicated bootstrap circuits (BST_A/B) requiring 100nF ceramic capacitors to respective outputs. Its control logic accepts dual PWM inputs (PWM_A/PWM_B) and supports 20–600kHz switching frequency, enabling precise amplitude and phase control of piezo actuation waveforms.

Protection is implemented hierarchically: fast overcurrent limiting (250ns response) precedes latching overload shutdown (1.3ms timeout); overtemperature warning (OTW at 125°C) precedes thermal shutdown (OTE at 155°C); and undervoltage lockout (UVP at 8.5V on GVDD_X) triggers immediate Hi-Z output state without sequencing dependency.

Key Specifications

Pinout & Package

DRV2901DDVR is housed in a thermally enhanced 44-pin HTSSOP (DDV) package measuring 14.0mm × 8.1mm with exposed PowerPad for improved heat dissipation. The package includes dedicated power grounds (GND_A/GND_B), separate bootstrap supplies (BST_A/B), and dual PWM inputs for independent half-bridge control.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar piezoelectric transducer driver applications.

Compared with DRV2900DDVR and TPS65136RGTR, the DRV2901DDVR uniquely combines 50W capability, programmable overcurrent, dual-level thermal reporting, and robust 44-pin HTSSOP packaging-making it the only option qualified for demanding industrial camera lens cleaning where fault resilience and power scalability are critical.

Availability

DRV2901DDVR is available at Aetrix Electronics and suitable for thermal imaging, traffic monitoring, machine vision, wireless security, and drone vision systems requiring stable component supply, long-term manufacturability, and automotive-grade reliability validation.

Supply support for DRV2901DDVR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and power management technologies with over 50 years of innovation in high-reliability signal chain and power solutions.

The DRV2901DDVR belongs to TI's Ultrasonic Lens Cleaner (ULC) driver family, engineered specifically for optical system maintenance in mission-critical imaging applications where dust mitigation must occur without mechanical intervention or system interruption.

FAQ

What is the recommended PVDD decoupling for DRV2901DDVR?

Each PVDD pin (PVDD_A and PVDD_B) requires a local decoupling network consisting of a 1.0μF tantalum or ceramic capacitor in parallel with a 0.01μF ceramic capacitor, connected directly to its respective power ground (GND_A or GND_B). This configuration ensures low-impedance energy delivery during high-current PWM transitions and suppresses high-frequency switching noise. The DRV2901DDVR datasheet specifies this arrangement to maintain stability under 50W peak loads and prevent voltage droop-induced fault triggering.

How does the OC_ADJ pin configure overcurrent protection on DRV2901DDVR?

The OC_ADJ pin on DRV2901DDVR sets the overcurrent trip threshold by connecting an external resistor to AGND. Resistor values from 22kΩ to 100kΩ program thresholds from 12.2A down to 3.0A, enabling precise matching to the piezo transducer's impedance and expected current profile. For example, a 47kΩ resistor configures a 6.4A limit, balancing cleaning effectiveness against false trips during transient peaks. This adjustment directly affects the DRV2901DDVR's ability to sustain operation under variable mechanical loading conditions.

Can DRV2901DDVR operate without external bootstrap capacitors?

No, DRV2901DDVR cannot operate without external bootstrap capacitors. Each BST pin (BST_A and BST_B) requires a 100nF ceramic capacitor connected to its corresponding output pin (OUT_A or OUT_B) to sustain high-side gate drive voltage above PVDD. Without these capacitors, the high-side MOSFETs fail to turn on fully, causing excessive conduction loss, thermal stress, and potential device shutdown. The DRV2901DDVR datasheet mandates this configuration for functional half-bridge operation and is validated across the full 20–600kHz PWM range.

What is the function of the OTW pin on DRV2901DDVR?

OTW (Over-Temperature Warning) on DRV2901DDVR is an open-drain, active-low output that asserts when the device junction temperature reaches 125°C (typical), providing early thermal warning before latching shutdown occurs at 155°C. It features an internal 26kΩ pullup to VREG (3.3V), eliminating external biasing for 3.3V logic interfaces. System firmware can monitor OTW to reduce PWM duty cycle or pause cleaning cycles, thereby extending DRV2901DDVR operational uptime and avoiding hard resets. This behavior is explicitly defined in the DRV2901DDVR electrical characteristics table and protection timing diagrams.

Does DRV2901DDVR require power supply sequencing during startup?

No, DRV2901DDVR does not require power supply sequencing. Its integrated power-on reset (POR) circuit automatically holds both half-bridges in a high-impedance (Hi-Z) state until GVDD_X and VDD reach their undervoltage protection thresholds (~8.5V), regardless of PVDD ramp order. This eliminates external sequencing ICs or delay circuits. The DRV2901DDVR datasheet confirms this feature under "Power-On Reset for Protection on Power Up Without Any Power-Supply Sequencing" and validates operation across all recommended PVDD (12–52.5V), GVDD (10.8–13.2V), and VDD (10.8–13.2V) ranges.