Texas Instruments TPIC43T02DAR

Overview

TPIC43T02DAR from Texas Instruments is a monolithic three-phase brushless DC motor RPM controller IC with integrated PLL-based speed regulation, EEPROM-programmable DSP filter coefficients, and gate drive outputs for six external N-channel FETs in half-H configuration. It supports 8–28 V supply, ±5% RPM lock detection, differential Hall position sensing, and variable reluctance speed sensor interface. Used in precision fan, pump, and spindle control systems requiring standalone closed-loop speed stability without host processor.

For engineers reviewing the TPIC43T02DAR datasheet, TPIC43T02DAR pinout, TPIC43T02DAR application, or TPIC43T02DAR equivalent, key selection considerations include synchronous rectification disable (vs. TPIC43T01), high-side current limit threshold (0.5 V), charge-pump-driven high-side gate drive (VCP = VCC + 14–17 V), and EEPROM-configurable PLL timebase via crystal divide-by settings.

Technical Context

The TPIC43T02DAR implements a digital signal processing loop with user-adjustable integrator gain and digital filter coefficients stored in on-chip EEPROM, enabling optimization of closed-loop transient response and stability for diverse motor/load dynamics. Its PLL architecture compares FGSOUT frequency against an EEPROM-adjustable FG reference derived from a 5–10 MHz crystal oscillator with four programmable divide-by values and real-time FSEL-controlled halving.

It integrates dual analog front-ends: one for differential Hall-effect position inputs (±7 mV thresholds, 1.5–3.5 V common-mode range) and another for variable reluctance FG signal conditioning (100× gain, 2 kHz bandwidth, 3 mV sensitivity). Gate drive logic delivers synchronized PWM to UGA/UGB/UGC and LGA/LGB/LGC with 1–3.2 µs dead time, while synchronous rectification is disabled by default per EEPROM bit 0.3 - distinguishing it functionally from TPIC43T01.

Key Specifications

Pinout & Package

TPIC43T02DAR is housed in a 38-pin DA package (small-outline surface-mount), with thermal pad exposed on underside for enhanced power dissipation in motor control environments.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar three-phase BLDC motor controller applications.

Compared with TPIC43T01DAR, TPIC43T02DAR offers lower gate drive complexity due to disabled synchronous rectification, while compared with DRV10983ZRTVT, it delivers greater flexibility through EEPROM-tuned loop compensation, crystal-referenced PLL accuracy, and support for higher current discrete FETs.

Availability

TPIC43T02DAR is available at Aetrix Electronics and suitable for industrial blowers, automotive HVAC fans, medical infusion pumps, and server cooling systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TPIC43T02DAR 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, embedded processing, and motor control solutions, with decades of expertise in precision power management and motion control ICs.

The TPIC43T02DAR belongs to TI's dedicated brushless DC motor controller product line, designed specifically for standalone, high-accuracy RPM regulation in industrial, automotive, and medical equipment where reliability and configurability outweigh integration density.

FAQ

What is the key functional difference between TPIC43T02DAR and TPIC43T01DAR?

The primary functional difference is synchronous rectification: TPIC43T02DAR has it disabled by default (EEPROM address 0, bit 3 = L), while TPIC43T01DAR enables it (bit 3 = H). This affects low-side FET turn-on timing during PWM off-cycles - TPIC43T02DAR uses body-diode conduction, simplifying timing but increasing conduction loss. All other registers, pinout, and core control functions are identical in TPIC43T02DAR.

Does TPIC43T02DAR require an external crystal oscillator?

Yes, TPIC43T02DAR requires an external 5–10 MHz crystal connected between OSC1 and OSC2 pins to establish its PLL reference frequency. The device supports EEPROM-programmable divide-by values (3072–16384) and real-time halving via the FSEL pin, allowing flexible RPM setpoint scaling. An external signal generator (1–10 MHz) may substitute for the crystal on OSC1 if needed.

How does TPIC43T02DAR handle motor stall conditions?

TPIC43T02DAR detects stall via its lock timer: when FGSOUT falls outside the ±5% RPM lock window for longer than TCLT × 1023 (set by RT and CLT), it asserts latched shutdown. Recovery requires cycling the S/S pin (high→low) or power cycling. Additionally, high-side overcurrent (SENSE > 1.0 V) and VDD UVLO (<3.1 V) trigger independent latched shutdowns - all monitored by TPIC43T02DAR's integrated supervisory logic.

Can TPIC43T02DAR drive both Hall-effect and variable reluctance sensors simultaneously?

Yes, TPIC43T02DAR integrates two independent analog front-ends: three differential Hall inputs (IN1±/IN2±/IN3±) for rotor position decoding and a dedicated FG amplifier (FGIN±/FGOUT/FGSOUT) for variable reluctance speed sensing. Both operate concurrently - Hall signals determine commutation sequence, while FG feedback closes the RPM control loop. No external multiplexing or signal conditioning is required for either sensor type in TPIC43T02DAR.

What is the purpose of the VPP pin on TPIC43T02DAR?

The VPP pin on TPIC43T02DAR is the 12–15 V programming voltage input used to write configuration data (PLL gain, filter coefficients, coast mode, sync rect enable) into the on-chip EEPROM. Programming requires a JEDEC-compatible file generated by TI's Windows-based software and executed via a third-party device programmer. VPP must be applied for 2–5 ms pulses with controlled rise/fall times; it is not used during normal operation of TPIC43T02DAR.