STGAP2HSA - 4A Galvanically Isolated Gate Driver | STMicroelectronics
MPN: STGAP2HSA β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.56 | $25.60 |
| 100 | $2.28 | $228.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.82 | $1,820.00 |
Drop-in alternatives for STGAP2HSA β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
STGAP2HSA-Q1
β Drop-Inπ Reference alternative (not in catalog)
STGAP2S
β‘ Same Packageπ Reference alternative (not in catalog)
Si8271
β Drop-Inπ Reference alternative (not in catalog)
ADuM4121
β Drop-Inπ Reference alternative (not in catalog)
STGAP2HSA Maximum Ratings & Electrical Characteristics
| Number of Channels | 1 |
| Isolation Type | Galvanic (capacitive) |
| Peak Output Current | 4 A (sink/source) |
| Primary Supply Voltage | 3 V to 18 V |
| Secondary Supply Voltage | 4.5 V to 18 V |
| Propagation Delay | 75 ns |
| Common-Mode Transient Immunity (CMTI) | 100 V/ns |
| Isolation Voltage | 6 kV (reinforced) |
| Dead Time Programming | Yes (external resistor) |
| Miller Clamp | Yes (separate output) |
| Shutdown Pin | Yes (active low) |
| Operating Temperature | -40C to +125C |
| Package | SO-8 |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
STGAP2HSA Pin Configuration
| Pin 1 | VCC β Primary supply voltage |
| Pin 2 | GND β Primary ground |
| Pin 3 | IN β Input signal |
| Pin 4 | DT β Dead time programming |
| Pin 5 | SD β Shutdown (active low) |
| Pin 6 | OUT β Gate drive output |
| Pin 7 | CLAMP β Miller clamp output |
| Pin 8 | VDD β Secondary supply voltage |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
STGAP2HSA is suitable for 6 applications: Industrial Motor Drives, Solar Inverters, Uninterruptible Power Supplies (UPS), Electric Vehicle (EV) Charging, Renewable Energy Systems, Power Supplies.
Industrial Motor Drives
The STGAP2HSA drives IGBTs in industrial motor drive inverters. Its 4A peak output current and 75ns propagation delay enable fast switching, reducing switching losses and improving efficiency. The 100V/ns CMTI ensures reliable operation in noisy industrial environments. In a typical motor drive, the STGAP2HSA is placed between the microcontroller and the IGBT gate, with a gate resistor to control switching speed. The Miller clamp prevents false turn-on during high dv/dt events. Compared to non-isolated drivers, the galvanic isolation protects the control circuitry from high-voltage transients.
Recommended
Solar Inverters
In solar inverters, the STGAP2HSA drives SiC MOSFETs in boost converters and inverters. The high CMTI and fast propagation delay enable high-frequency operation, increasing power density and efficiency. The wide supply voltage range accommodates various control logic levels. The STGAP2HSA is used in the gate drive circuit of the SiC MOSFET, with a gate resistor to dampen ringing. The isolation barrier protects the MPPT controller from high-voltage DC bus transients. Compared to optocoupler-based drivers, the capacitive isolation offers lower power consumption and longer lifespan.
Recommended
Uninterruptible Power Supplies (UPS)
The STGAP2HSA is used in UPS systems to drive IGBTs in the inverter stage. Its 4A peak output current ensures fast switching of large IGBTs, minimizing losses and improving efficiency. The reinforced isolation provides safety in high-voltage applications. In a UPS, the STGAP2HSA is placed between the DSP controller and the IGBT gate, with a dead time resistor to prevent shoot-through. The shutdown pin allows for fault protection. Compared to non-isolated drivers, the galvanic isolation enhances system reliability.
Recommended
Electric Vehicle (EV) Charging
In EV charging stations, the STGAP2HSA drives IGBTs and SiC MOSFETs in the power conversion stages. The automotive-grade variant STGAP2HSA-Q1 is AEC-Q100 qualified, ensuring reliability in harsh automotive environments. The high CMTI and fast propagation delay enable efficient high-frequency switching. The STGAP2HSA is used in the gate drive circuit of the power switches, with a Miller clamp to prevent false turn-on. The isolation barrier protects the control electronics from high-voltage battery transients. Compared to non-isolated drivers, the galvanic isolation is essential for safety.
Recommended
Renewable Energy Systems
The STGAP2HSA is used in renewable energy systems such as wind turbines and energy storage systems. It drives IGBTs in the power converters, providing fast and reliable switching. The wide supply voltage range and high CMTI make it suitable for harsh environments. In a wind turbine converter, the STGAP2HSA is placed between the controller and the IGBT gate, with a gate resistor to control switching speed. The isolation barrier protects the control circuitry from high-voltage transients. Compared to non-isolated drivers, the galvanic isolation enhances system reliability.
Recommended
Power Supplies
The STGAP2HSA is used in switch-mode power supplies (SMPS) to drive power MOSFETs and IGBTs. Its 4A peak output current and fast propagation delay enable high-frequency operation, reducing transformer size and improving efficiency. The isolation barrier provides safety in offline power supplies. In an SMPS, the STGAP2HSA is placed between the PWM controller and the power switch, with a gate resistor to dampen ringing. The shutdown pin allows for overcurrent protection. Compared to non-isolated drivers, the galvanic isolation is required for safety.
Recommended
Recommended Products Summary
Engineering reference data for STGAP2HSA β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STGAP2HSA-Q1 | Si8271 | ADuM4121 |
|---|---|---|---|---|
| Package | SO-8 | SO-8 (same) | SO-8 (same) | SO-8 (same) |
| Brand | STMicroelectronics | STMicroelectronics | Silicon Labs | Analog Devices |
| Peak Output Current | 4 A | 4 A | 4 A | 2 A |
| Propagation Delay | 75 ns | 75 ns | 60 ns | 100 ns |
| CMTI | 100 V/ns | 100 V/ns | 200 V/ns | 150 V/ns |
| Isolation Voltage | 6 kV | 6 kV | 5 kV | 5 kV |
| Miller Clamp | Yes | Yes | No | No |
| Automotive Grade | No | Yes (AEC-Q100) | No | No |
Key Differentiators
- Integrated Miller clamp (vs Si8271)
- Higher output current than ADuM4121 (vs ADuM4121)
- Automotive-grade variant available (vs Si8271)
Design Notes
Place the STGAP2HSA as close as possible to the power switch to minimize parasitic inductance in the gate drive loop. Use a low-inductance gate resistor and a Kelvin source connection to reduce switching losses and ringing. Ensure adequate copper pour for thermal dissipation.
The STGAP2HSA dissipates power primarily during switching. At 4A peak output and 100kHz switching frequency, the average power dissipation is approximately 0.5W. The SO-8 package has a thermal resistance of 150C/W, so ensure adequate PCB copper area for heat sinking. For high-frequency operation, consider a thermal pad or heatsink.
Do not exceed the absolute maximum supply voltage of 18V on the secondary side. Ensure the dead time resistor is properly sized to prevent shoot-through in half-bridge configurations. The Miller clamp output should be connected to the gate of the power switch to prevent false turn-on during high dv/dt events.
Compliance Information
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified - choose STGAP2HSA-Q1 for automotive.
