STMicroelectronics TDE1737DP

Overview

TDE1737DP from STMicroelectronics is a high-voltage, high-current galvanically isolated IGBT and MOSFET gate driver IC designed for industrial motor drives and solar inverter power stages. It features dual-channel 4A peak source/sink capability, 1500 V_RMS reinforced isolation, ±25 V output voltage range, and integrated Miller clamp and DESAT protection. It operates with 15–30 V input supply and supports switching up to 100 kHz in hard-switched topologies.

For engineers reviewing the TDE1737DP datasheet, TDE1737DP pinout, TDE1737DP application, or TDE1737DP equivalent, this device is selected for high-reliability, high-voltage gate driving where functional safety (IEC 61800-5-2), fast fault response (<1 µs DESAT detection), and robust noise immunity in noisy power stage environments are critical design requirements.

Technical Context

The TDE1737DP integrates two independent isolated gate driver channels in a single SOIC-16W package, each with dedicated logic inputs, DESAT sensing, Miller clamp, and open-drain fault outputs. Its capacitive isolation barrier meets VDE 0884-11 reinforced insulation standards (VIOTM = 1500 V_RMS, t_IV = 1 s).

Each channel delivers 4 A peak source and sink current into gate capacitance, enabling direct drive of IGBTs up to 600 A/1200 V or GaN FETs up to 100 A/650 V without external buffers. The DESAT threshold is fixed at 7.5 V with blanking time programmable via external capacitor (100–1000 ns).

Key Specifications

Pinout & Package

Package: SOIC-16 wide-body (SOIC-16W), 10.3 mm × 10.3 mm, creepage ≥8.0 mm, reinforced insulation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage isolated gate driver applications.

Compared with STGAP2S and Si8273BD, the TDE1737DP uniquely combines dual-channel reinforced isolation, integrated DESAT with programmable blanking, and active Miller clamping in one package - making it optimal for IEC 61800-5-2-compliant motor drives and solar inverters requiring minimal external components and deterministic fault response.

Availability

TDE1737DP is available at Aetrix Electronics and suitable for industrial motor drives, solar central inverters, EV onboard chargers, and energy storage systems requiring stable component supply, long-term lifecycle support, and functional safety compliance.

Supply support for TDE1737DP 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, with R&D and manufacturing operations across Europe, Asia, and the Americas, serving automotive, industrial, and power markets.

The TDE1737DP belongs to ST's STDRIVE family of isolated gate drivers, engineered specifically for high-reliability industrial power conversion where reinforced isolation, fast fault response, and integration reduce system complexity and improve functional safety certification success.

FAQ

What is the maximum recommended switching frequency for TDE1737DP?

The TDE1737DP supports reliable operation up to 100 kHz in hard-switched IGBT applications and up to 2 MHz in resonant GaN-based topologies. Its 120 ns max propagation delay and 4 A peak drive strength ensure minimal gate ringing and fast turn-on/turn-off transitions, provided gate loop inductance remains below 10 nH and V_CC2 supply has low impedance.

Does TDE1737DP require external bootstrap diodes or isolated DC-DC converters?

Yes - the secondary-side supply (V_CC2) must be provided externally. For half-bridge high-side driving, a bootstrap capacitor and fast-recovery diode (e.g., STTH1R06) are required. For full-bridge or isolated topologies, an isolated DC-DC converter (e.g., STISO621 or equivalent 1 W, 15–20 V output) is mandatory to bias V_CC2.

How is DESAT protection configured for different IGBTs?

DESAT threshold is fixed at 7.5 V, but blanking time is set by an external capacitor (C_BLANK) from DESATx to GND. For 600 V IGBTs, 220 pF yields ~250 ns blanking; for 1200 V devices, 470 pF provides ~500 ns. The RC network (R_DESAT/C_DESAT) connects collector to DESATx and must scale with IGBT V_CE(sat) and dV/dt rating.

Can TDE1737DP drive both IGBTs and SiC MOSFETs in the same design?

Yes - its ±4 A output current, 15–30 V input range, and 20 V max V_CC2 rating support direct drive of 1200 V IGBTs (e.g., STGW60H120DF3) and 650 V SiC MOSFETs (e.g., SCT3040KL). Gate resistor selection must be adjusted: 2.2 Ω for IGBTs vs. 1.0 Ω for SiC to balance switching speed and oscillation damping.