Texas Instruments DRV411AIPWP

Overview

DRV411AIPWP from Texas Instruments is a sensor signal conditioning IC for closed-loop magnetic current sensors, integrating Hall excitation, spinning-current offset cancellation, 250-mA H-bridge compensation driver, precision differential amplifier (100 µV max offset), and pin-selectable 2.5 V / 1.65 V / ratiometric reference. It enables high-accuracy DC/AC current measurement in industrial power converters and EV traction inverters.

For engineers reviewing the DRV411AIPWP datasheet, DRV411AIPWP pinout, DRV411AIPWP application, or DRV411AIPWP equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternatives with functional trade-offs, and supply-chain support for production ramp-up.

Technical Context

The DRV411AIPWP implements a switched-capacitor loop filter and proprietary spinning-current excitation to eliminate Hall sensor offset and 1/f noise-achieving ≤100 µV front-end offset and ≤2 µV/°C drift across –40°C to +125°C. Its front-end gain is configurable via GSEL pins (100–1000 V/V) with flatband bandwidth up to 200 kHz.

The integrated Class AB H-bridge delivers ±250 mA peak current into compensation windings, enabling doubled current measurement range versus single-ended drive. The differential amplifier features 4-V/V fixed gain, ±0.1 mV input offset (RTO), and 2 MHz –3 dB bandwidth with 6.5 V/µs slew rate for fast overload recovery.

Key Specifications

Pinout & Package

TSSOP-20 PowerPAD™ package with exposed thermal pad (must be connected to GND); optimized for thermal performance in high-power current-sensing applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar closed-loop current sensor conditioning applications.

Compared with DRV401AIPWP and ACS724LLCTR-20AU-T, the DRV411AIPWP uniquely combines on-chip 250-mA H-bridge drive, spinning-current offset cancellation, and pin-selectable reference-enabling higher accuracy, wider dynamic range, and greater system integration in demanding industrial and automotive current sensing.

Availability

DRV411AIPWP is available at Aetrix Electronics and suitable for industrial motor drives, EV traction inverters, renewable energy inverters, and industrial UPS systems requiring stable component supply across extended temperature and long product lifecycles.

Supply support for DRV411AIPWP 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 leader specializing in analog and embedded processing technologies, with decades of expertise in precision signal conditioning and high-reliability power management solutions.

The DRV411AIPWP belongs to TI's magnetic current sensor signal conditioning product line, engineered specifically to replace discrete Hall excitation, amplification, and compensation driver circuits with a single high-accuracy, thermally robust IC for closed-loop current measurement.

FAQ

What is the maximum compensation coil current supported by the DRV411AIPWP?

The DRV411AIPWP supports up to ±250 mA peak current into the compensation coil at 5 V supply, as specified in the Electrical Characteristics table under "Compensation Coil Driver, H-Bridge" section. This drive capability enables extended current measurement ranges in closed-loop topologies. The DRV411AIPWP maintains this rating across its full operating temperature range of –40°C to +125°C with appropriate PCB thermal design using the exposed PowerPAD™.

How does the spinning-current excitation in the DRV411AIPWP reduce Hall sensor offset?

The DRV411AIPWP applies orthogonal excitation current through HALL1–HALL4 pins at 1 MHz, rotating the current path across four quadrants of the Hall element. The resulting Hall voltages are averaged, canceling static offset and 1/f noise. This technique achieves ≤100 µV front-end offset and ≤2 µV/°C drift-verified in the Typical Characteristics figures C011 and C009. The DRV411AIPWP continuously monitors offset and asserts the ERROR pin if it exceeds 50 mV.

Can the DRV411AIPWP operate with a 3.3-V supply, and what reference voltage options are available?

Yes, the DRV411AIPWP operates from 2.7 V to 5.5 V, fully supporting 3.3-V systems. Reference voltage is selected via REFSEL1 and REFSEL2 pins: [0,0] = 2.5 V, [1,0] = 1.65 V (optimized for 3.3-V ADCs), and [1,1] = ratiometric (50% of VDD). All modes maintain ±0.2% accuracy and ±50 ppm/°C drift, as confirmed in the Voltage Reference section of the datasheet.

What is the function of the OR and ERROR pins on the DRV411AIPWP?

The OR (Overrange) pin is an open-drain output that asserts low when the differential input (IAIN2–IAIN1) exceeds ±75 mV-indicating shunt voltage saturation. The ERROR pin is also open-drain and activates for Hall sensor faults (offset >50 mV), internal power-on-reset failure, or excessive junction temperature. Both require external pull-up resistors; neither includes internal pull-ups per datasheet Section 7.5.

Is the DRV411AIPWP pin-compatible with other devices in the DRV4xx family?

No, the DRV411AIPWP is not pin-compatible with DRV401AIPWP or DRV421AIPWP. Pin assignments differ significantly-for example, DRV401 lacks HALL3/HALL4 and uses different GSEL/REFSEL pin locations. The DRV411AIPWP's TSSOP-20 layout (PWP) is unique to its integrated H-bridge and 4-wire Hall interface. Migration requires full schematic and layout revision.