STMicroelectronics STGIK50CH65T

Overview

STGIK50CH65T from STMicroelectronics is a high-power intelligent power module (IPM) integrating a 650 V, 50 A three-phase inverter bridge with embedded gate drivers, short-circuit protection, built-in bootstrap diodes, and 100 kΩ NTC thermistor for temperature monitoring. It uses trench-gate field-stop IGBTs and soft-recovery diodes in a fully isolated SDIPHP-30L package, designed for HVAC compressors, servo motor drives, and industrial pump inverters.

For engineers reviewing the STGIK50CH65T datasheet, STGIK50CH65T pinout, STGIK50CH65T application, or STGIK50CH65T equivalent, key selection criteria include its 2500 Vrms isolation rating, TTL/CMOS-compatible 3.3 V/5 V inputs with hysteresis, fault output with configurable hold time via CFO capacitor, and separate open-emitter outputs enabling precise phase-leg current sensing.

Technical Context

The STGIK50CH65T implements a fully integrated 3-phase inverter architecture with independent high-side and low-side driver ICs per phase, each featuring undervoltage lockout (UVLO) on VCCHx (9.2–11.3 V operating range) and VCCL (11.2–13.3 V), plus dedicated bootstrap diodes rated for 650 V reverse voltage. Its protection system includes comparator-based short-circuit detection via CIN pin (0.46–0.54 V trip threshold) and shutdown/fault bidirectional FO pin with programmable delay (0.012–440 ms) controlled by external CFO capacitance.

Thermal management is enabled by an integrated NTC thermistor (R₂₅ = 100 kΩ, B_25/85 = 4395 K) and low thermal resistance junction-to-case (1 °C/W per IGBT), supporting continuous operation up to T_C = 125 °C and T_J = 175 °C. The module requires external RC filtering on all logic inputs (HIN/LIN) and CIN/FO pins per ST's layout guidelines to ensure noise immunity and prevent false triggering.

Key Specifications

Pinout & Package

STGIK50CH65T uses the SDIPHP-30L package: a 30-pin, fully isolated, double-sided heat sink-mountable molded module with 46.0 mm × 31.0 mm footprint and 4.25 mm height. The package provides galvanic isolation between power terminals (P, U, V, W, NU, NV, NW) and control pins (HIN/LIN, FO, CIN, etc.), rated for 2500 V_rms withstand voltage.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 3-phase inverter applications.

Compared with FSB50450 and IM828-L6Y, STGIK50CH65T uniquely combines 2500 V_rms isolation, integrated 100 kΩ NTC, and dual-voltage (3.3/5 V) logic compatibility - making it the only option qualified for UL-recognized HVAC OEMs requiring both safety certification and closed-loop thermal management.

Availability

STGIK50CH65T is available at Aetrix Electronics and suitable for HVAC compressors, servo motor drives, and industrial pump inverters requiring stable component supply, long-term lifecycle assurance, and full traceability for ISO 9001-certified production.

Supply support for STGIK50CH65T 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 devices, sensors, and analog ICs for automotive, industrial, and consumer markets.

The SLLIMM™ high-power IPM product line targets compact, high-efficiency AC motor drives - specifically engineered to replace discrete IGBT+driver designs in variable-frequency drives while meeting UL, IEC, and AEC-Q100 requirements.

FAQ

What is the maximum allowable DC bus voltage for continuous operation?

The STGIK50CH65T supports continuous operation at 400 V DC bus voltage (VPN = 400 V), as specified in Table 12's Recommended Operating Conditions. Its absolute maximum rating is 500 V (surge to 550 V), but sustained operation above 400 V risks accelerated IGBT degradation and reduced short-circuit withstand capability. Thermal derating is required above 100 °C case temperature per Figure 13.

How should the CFO capacitor be selected for motor overload protection?

Select CFO based on required fault hold time: 0.01 µF yields 2.0–4.4 ms (per Table 9), appropriate for motor overload detection where mechanical inertia delays thermal rise. For fast short-circuit events (<10 µs), use 0 µF (direct connection) to minimize FO response latency. Always place CFO adjacent to CIN pin with shortest possible trace per Figure 6 layout guidance.

Can the NTC thermistor be used for IGBT junction temperature estimation?

Yes - the integrated 100 kΩ NTC (R₂₅, B_25/85 = 4395 K) is thermally coupled to the IGBT die. Using two-point calibration (e.g., at 25 °C and 100 °C), junction temperature can be estimated within ±2 °C accuracy. ST Application Note AN5063 provides linearization equations and compensation methods for MCU firmware implementation.

What layout practices prevent false triggering of the CIN overcurrent protection?

To prevent false CIN triggering, route the CIN trace away from high-dV/dt nodes (U/V/W outputs), use a dedicated 1 nF decoupling capacitor close to the MCU ADC input, and implement the RC filter (RCF × CCF = 1 µs) adjacent to the CIN pin as specified in Section 6.1. Avoid routing CIN parallel to LIN/HIN traces, and maintain ≥3 mm clearance from power planes per ST's layout checklist.