The DRIVINV2_BT Low Voltage Inverter Gate Driver Circuit Board (Part Number: 790075P191 - Original Italian Name: SCHEDA DRIVINV2_BT) designed and manufactured by premier Italian power electronics specialist SECOM s.r.l. is a second-generation gate firing and protection sub-assembly engineered for low-voltage (BT - Bassa Tensione, covering standard 400V to 690V grids) industrial inverter systems.

PRODUCT OVERVIEW & SPECIFICATIONS (790075P191):
- Part Number: 790075P191
- Factory Designation: SCHEDA DRIVINV2_BT (Driver Inverter V2 - Bassa Tensione).
- Manufacturer: SECOM s.r.l. (Italy)
- System Platform: Engineered specifically for SECOM low-voltage industrial variable frequency drive (VFD) converters operating on 400V to 690V AC supplies.
- High-Speed Gate Firing: Accurately converts low-voltage PWM timing signals from the central DSP processor into high-peak gate drive currents, facilitating sharp transitions and optimal switching speeds while minimizing on-state and switching power losses.
- High Galvanic Isolation: Incorporates high-integrity pulse transformers and industrial optocouplers to provide dielectric isolation between low-voltage digital controls and the low-voltage power semiconductor stage.

KEY ADVANTAGES:
- Integrated Desaturation Protection (Desat): Continuously monitors the on-state collector-emitter voltage across IGBT modules; in the event of an overcurrent or short-circuit condition, it executes an immediate Soft Turn-Off (STO) routine within microseconds to eliminate destructive turn-off voltage spikes.
- Under-Voltage Lockout (UVLO): Protects semiconductor gates by inhibiting switching pulses when the auxiliary driving voltage drops below safe threshold levels.
- Industrial Environmental Protection: Multilayer circuit board construction finished with ruggedized conformal coating, ensuring robust performance against humidity, airborne contaminants, and conductive metallic dust.

• Manufacturer: SECOM s.r.l.
• Origin: Italy
• Part Number: 790075P191
• Technical Name: SCHEDA DRIVINV2_BT
• Device Category: Low Voltage Inverter Gate Driver Circuit Board
• Target Inverter Voltage: SECOM Low-Voltage industrial inverters (BT - Bassa Tensione, 400V – 690V range)
• Galvanic Test Isolation Voltage: ≥ 3.0 kV AC / 4.0 kV AC
• Auxiliary Supply Voltage: 15V DC / 24V DC (supplied from auxiliary power supply boards like 790075P098)
• Channel Architecture: Multi-channel gate driving for inverter phase legs
• Integrated Protective Safeguards:
  - Short-circuit / Desaturation detection (Desat)
  - Secondary power supply Under-Voltage Lockout (UVLO)
  - Controlled Soft Turn-Off (STO) circuit
  - Galvanically isolated fault reporting output
• Conformal Coating: Tropicalized industrial conformal coating against humidity and dust
• Operating Ambient Temperature: -10°C to +65°C
• Storage Temperature Range: -40°C to +85°C
• Safety Compliance: Built in conformance with EN / IEC 61800-5-1 power converter standards
• Typical Applications: Low-voltage rolling mill motor drives, cement clinker mill inverters, heavy industrial pump and fan converters, marine harbor crane drives, and high-power industrial power converter cubicles.