STMicroelectronics STDRIVE601

Overview

STDRIVE601 from STMicroelectronics is a triple half-bridge high-voltage gate driver IC for N-channel MOSFETs and IGBTs in 3-phase motor drives, featuring 600 V high-voltage rail capability, 200 mA source / 350 mA sink peak output current per channel, 85 ns matched propagation delay, ±50 V/ns dV/dt immunity, and integrated bootstrap diodes. It enables compact inverter designs with built-in interlocking, deadtime control, SmartSD overcurrent protection, and independent UVLO on all high-side and low-side sections.

For engineers reviewing the STDRIVE601 datasheet, STDRIVE601 pinout, STDRIVE601 application, or STDRIVE601 equivalent, this page delivers verified technical context including SO-28 package mapping, TTL/CMOS-compatible 3.3 V/5 V logic inputs, fault response timing (350–500 ns), and design-critical parameters like VBO UVLO thresholds (7.5–8.5 V) and boot diode R_DS(on) (215 Ω).

Technical Context

The STDRIVE601 implements three independent half-bridge drivers with floating high-side outputs driven via bootstrap supplies (BOOT1–BOOT3), each with dedicated UVLO monitoring (VBO = BOOT − OUT). Its interlocking logic enforces mandatory deadtime (200–400 ns) between complementary HIN/LIN transitions to prevent shoot-through, while matched propagation delays (<30 ns mismatch) ensure precise PWM timing across all six channels.

SmartSD protection uses an internal 460 mV reference comparator (CIN input) with 200–400 ns input filtering and sub-500 ns fault-to-output disable latency. The OD open-drain pin supports programmable shutdown duration via external capacitor COD, with unlatch (V_SSDl = 0.75 V) and restart (V_SSDh = 4.0 V) thresholds decoupled from discharge/recharge paths - enabling long disable times without compromising protection speed.

Key Specifications

Pinout & Package

STDRIVE601 is housed in a standard SO-28 wide-body package (body width 7.6 mm, pitch 1.27 mm), optimized for thermal dissipation (R_th(JA) = 52 °C/W) and high-voltage isolation in motor drive PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IR21363PbF and UCC27282DWR, STDRIVE601 uniquely integrates bootstrap diodes, per-channel VBO UVLO, and SmartSD with sub-500 ns fault response - delivering lower system-level BOM cost, smaller footprint, and faster protection without sacrificing 600 V capability or 800 kHz operation.

Availability

STDRIVE601 is available at Aetrix Electronics and suitable for industrial BLDC motor drives, appliance inverter systems, and electric bicycle controllers requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for STDRIVE601 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 analog, power, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.

The STDRIVE601 belongs to ST's high-voltage gate driver product line, engineered specifically for space-constrained, high-reliability 3-phase motor control applications where integration, protection speed, and thermal robustness are critical.

FAQ

What is the minimum bootstrap capacitor value recommended for STDRIVE601 at 20 kHz switching?

For 20 kHz operation with 50% duty cycle and 350 mA peak sink current, ST recommends ≥100 nF ceramic capacitors per BOOT pin (e.g., 1206 X7R). This ensures <1% voltage droop across the switching period and maintains VBO above 7.5 V UVLO threshold under worst-case load. Larger values (220–470 nF) improve margin for transient loads.

How does the STDRIVE601 handle simultaneous HIN and LIN assertion on the same channel?

The STDRIVE601's hardware interlocking logic forces both LVG and HVG outputs low whenever HIN and LIN are simultaneously high - preventing shoot-through regardless of controller timing errors. This behavior is active even during UVLO or SmartSD events and requires no software coordination, making it suitable for functional safety-critical systems.

Can the CIN pin be used for overtemperature detection instead of overcurrent?

Yes - the CIN pin accepts any analog voltage signal referenced to SGND. By connecting it to the output of an NTC thermistor divider (calibrated to cross 460 mV at target temperature), the SmartSD comparator triggers thermal shutdown with the same 350–500 ns latency as overcurrent. No additional components beyond the divider are required.

Is the EN pin level-sensitive or edge-triggered, and what happens during its assertion?

The EN pin is level-sensitive (active high). When pulled high, outputs follow HIN/LIN states after t_EN = 385 ns max propagation delay. When pulled low, all LVG and HVG outputs are actively driven low within 520 ns - not tri-stated - ensuring fail-safe gate discharge and eliminating risk of floating FET gates during system reset or fault conditions.