STMicroelectronics STDRIVE101TR

Overview

STDRIVE101TR from STMicroelectronics is a triple half-bridge gate driver IC for N-channel MOSFETs in three-phase BLDC motor control, featuring 600 mA sink/source per channel, 40 ns propagation delay, integrated 12 V/50 mA LDO, and VDS monitoring with programmable threshold. It operates from 5.5 V to 75 V supply and supports two input modes (ENx/INx with adjustable deadtime or INHx/INLx with interlocking) for e-bike and power tool motor drives.

For engineers reviewing the STDRIVE101TR datasheet, STDRIVE101TR pinout, STDRIVE101TR application, or STDRIVE101TR equivalent, this device delivers matched timing, bootstrap diode integration, UVLO on both high- and low-side sections, thermal shutdown, and standby mode - critical for reliable motor phase switching in compact industrial and consumer motion systems.

Technical Context

The STDRIVE101TR implements three independent half-bridge drivers with matched propagation delay (≤20 ns inter-channel, ≤20 ns HS/LS), each supporting 600 mA sink/source at 12 V gate drive. Its dual-input strategy-selected via DT/MODE pin-enables either ENx/INx mode (externally set deadtime via resistor) or INHx/INLx mode (hardware interlock), eliminating cross-conduction without external logic.

It integrates a 12 V LDO (11.4–12.75 V output, 50 mA max) fed from VS, powering both gate drivers and external circuitry, while embedded VDS monitors per channel compare OUTx-to-VS voltage against SCREF-set thresholds (0.1–2.8 V range) to detect overcurrent or short-circuit conditions before MOSFET failure.

Key Specifications

Pinout & Package

STDRIVE101TR is housed in a VFQFPN 4×4 mm, 24-lead package with exposed thermal pad (EPAD/GND). The layout supports high-density motor control PCBs with symmetric routing for matched trace lengths across all three half-bridges.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar triple half-bridge gate driver applications.

Compared with DRV8305PWP and MP6532DJ-LF-P, STDRIVE101TR uniquely combines 75 V operation, integrated bootstrap diodes, programmable VDS monitoring, and sub-20 µA standby - making it optimal for battery-powered, space-constrained, and safety-aware BLDC applications where BOM reduction and analog fault response are prioritized.

Availability

STDRIVE101TR is available at Aetrix Electronics and suitable for e-bikes, power tools, and industrial automation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging in tape-and-reel format.

Supply support for STDRIVE101TR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, and analog/mixed-signal devices for automotive, industrial, and consumer markets.

The STDRIVE series targets high-efficiency, compact motor control systems - specifically engineered to replace discrete gate driver + LDO + protection circuits with single-chip solutions for BLDC and PMSM inverters.

FAQ

What input logic levels does STDRIVE101TR support?

STDRIVE101TR accepts 3.3 V TTL/CMOS logic inputs with 0.8 V VIH and 2 V VIH thresholds, and is 5 V tolerant on all digital pins. Inputs remain undamaged even when biased while VS is unpowered, floating, or shorted to ground - enabling robust interfacing with diverse MCUs and isolated gate drivers.

How does the VDS monitoring function protect external MOSFETs?

VDS monitoring compares the voltage between OUTx and VS against a user-defined threshold set by SCREF (0.2–2.5 V). When VDS exceeds the threshold - indicating overcurrent or short-circuit - the internal comparator triggers nFAULT within 200 ns, disabling all gate drivers to halt power stage conduction before MOSFET thermal damage occurs.

Can STDRIVE101TR operate at 100% duty cycle on high-side outputs?

No - due to bootstrap architecture, continuous high-side conduction discharges the bootstrap capacitor. STDRIVE101TR requires periodic low-side conduction to recharge BOOTx via the internal diode. For true 100% duty cycle, an external high-side supply or charge pump is necessary; the device supports limited burst-mode operation only.

What is the role of the DT/MODE pin, and how is it configured?

DT/MODE selects input strategy: pulled low (to GND) enables INHx/INLx mode with hardware interlock; left open or pulled high enables ENx/INx mode with resistor-programmable deadtime (RDT = 50–250 kΩ sets 480–3200 ns). This pin eliminates firmware configuration overhead and ensures deterministic timing behavior at startup.