SID1182K
SCALE-iDriver single-channel with 8A peak output for IGBTs and SiC MOSFETs up to 1200V
Product Overview
Description
The SID1182K is a single-channel isolated gate driver featuring Power Integrations' FluxLink technology for reliable isolation.
This driver provides ±8A peak output current, making it suitable for driving IGBTs and SiC MOSFETs up to 1200V.
The device includes integrated protection features such as DESAT detection, soft shutdown, and undervoltage lockout for safe operation.
Product Series
SID
Primary Application
Motor drives
Key Features
- FluxLink reinforced isolation
- ±8A peak output current
- DESAT detection and soft shutdown
- Undervoltage lockout
- High CMTI >100kV/μs
- Low propagation delay
Specifications
| Output Current | ±8A peak |
|---|---|
| Isolation Voltage | 5kV RMS |
| CMTI | >100kV/μs |
| Switching Frequency | Up to 150kHz |
| Supply Voltage | 15-30V |
| Package | SO-16 |
Applications
Motor drives
Motor drive and control systems
Solar inverters
Renewable energy systems
EV chargers
Battery and charging management
Industrial power supplies
Industrial automation and control
FAE Expert Insights
"The SID1182K is my preferred choice for isolated gate drive applications. The FluxLink technology provides excellent isolation performance with >100kV/μs CMTI, which is critical for fast-switching SiC MOSFET applications. What impresses me most is the integrated protection features - DESAT detection and soft shutdown protect the power device during fault conditions. The ±8A drive capability is sufficient for most IGBT and SiC modules up to 100A. For high-frequency applications, the low propagation delay and excellent matching enable precise switching control. I recommend this driver for any application requiring reliable isolated gate drive."
Excellent isolation and protection features for reliable gate drive
— Alex Wang, BeiLuo
Frequently Asked Questions
What is FluxLink technology in SCALE-iDriver?
FluxLink is Power Integrations' proprietary magnetic isolation technology used in SCALE-iDriver: 1) Magnetic coupling - uses transformer for signal isolation instead of optocouplers, 2) High CMTI - achieves >100kV/μs common-mode transient immunity, 3) Reinforced isolation - meets 5kV RMS isolation requirements, 4) Long lifetime - no degradation like optocouplers, 5) Fast switching - low propagation delay for high-frequency applications. FluxLink provides superior performance and reliability compared to traditional optocoupler-based isolation, especially in high dv/dt environments common with SiC MOSFETs.
Choose SCALE-iDriver with FluxLink for applications requiring high CMTI and long-term reliability.
How does DESAT protection work?
DESAT (Desaturation) protection in SCALE-iDriver detects IGBT short-circuit conditions: 1) Monitoring - driver monitors VCE voltage during on-state, 2) Threshold - if VCE exceeds threshold (typically 7-9V), desaturation is detected, 3) Soft shutdown - gate voltage is slowly reduced to prevent voltage spikes, 4) Fault reporting - fault pin indicates protection event, 5) Reset - driver resets after fault condition clears. The soft shutdown is critical to prevent overvoltage damage from parasitic inductance during fast current interruption. External DESAT diode connects collector to driver DESAT pin.
Always use DESAT protection for IGBT applications. Configure threshold and timing based on your specific device and application.
What is CMTI and why is it important?
CMTI (Common-Mode Transient Immunity) measures a gate driver's ability to reject fast common-mode voltage transients: 1) Definition - maximum dv/dt the driver can withstand without output glitch, 2) Importance - high dv/dt in SiC MOSFET applications can cause false triggering, 3) SCALE-iDriver advantage - >100kV/μs CMTI with FluxLink technology, 4) Comparison - optocoupler drivers typically have 15-50kV/μs CMTI, 5) Application - critical for fast-switching SiC MOSFETs with dv/dt >50kV/μs. High CMTI ensures reliable operation in high-frequency, fast-switching applications.
Select gate driver with CMTI >50kV/μs for SiC MOSFET applications, >100kV/μs for best performance.
How do I power the high-side gate driver?
Powering high-side SCALE-iDriver requires isolated power supply: 1) Isolated DC-DC converter - provides isolated 15-20V supply for gate drive, 2) Bootstrap supply - can be used for low-duty cycle applications, 3) Charge pump - alternative for some applications, 4) Power requirements - calculate based on gate charge, switching frequency, and quiescent current, 5) Regulation - supply should be well-regulated for consistent drive strength. For three-phase inverters, three isolated supplies are needed. Power Integrations offers isolated DC-DC converters suitable for gate drive applications.
Use isolated DC-DC converter for reliable high-side power. Calculate power requirements based on switching frequency and gate charge.
Can SCALE-iDriver drive SiC MOSFETs?
SCALE-iDriver is well-suited for driving SiC MOSFETs: 1) Voltage rating - 15-20V gate drive suitable for SiC devices, 2) CMTI - >100kV/μs handles high dv/dt of SiC switching, 3) Drive strength - ±8A to ±12A handles high gate charge of large SiC modules, 4) Isolation - reinforced isolation for high-voltage applications, 5) Protection - UVLO prevents operation at insufficient gate voltage. For SiC MOSFETs, use negative gate voltage (-3V to -5V) for turn-off to prevent false triggering. Consider active Miller clamp for high dv/dt applications.
SCALE-iDriver is excellent for SiC MOSFET applications. Use appropriate negative gate voltage and consider Miller clamp for high dv/dt.