The Si8239x combines two isolated drivers with either an independent input control or a single input into a single package for high power applications. All drivers operate with a 2.5 V input VDD and a maximum drive supply voltage of 24 V.
The Si8239x isolators are ideal for driving power MOSFETs and IGBTs used in a wide variety of switched power and motor control applications. These drivers utilize Silicon Laboratories' proprietary silicon isolation technology, supporting up to 5 kVRMS withstand voltage. This technology enables high CMTI (100 kV/us), lower prop delays and skew, reduced variation with temperature and age and tighter part-to-part matching.
It also offers some unique features such as an output UVLO fault detection and feedback, and automatic shutdown for both drivers, an EN (active high) pin, a safe delayed start-up time of 1 ms, fail-safe drivers with default low in case of VDDI power-down, and dead time programmability. The Si8239x family offers longer service life and dramatically higher reliability compared to opto-coupled gate drivers.
Automotive Grade is available for certain part numbers. These products are built using automotive-specific flows at all steps in the manufacturing process to ensure the robustness and low defectivity required for automotive applications
Features
- Two completely isolated drivers in one package. Up to 5 kVRMS input-to-output isolation. Up to 1500 VDC peak driver-to-driver differential voltage
- Enhanced output UVLO safety. Status feedback to controller. Both outputs drive low on UVLO
- EN pin for enhanced safety
- Extended VDDI: 2.5 V – 5.5 V
- PWM and dual driver versions
- 4.0 A peak output
- High electromagnetic immunity
- Extended start-up time (1ms) for safe initialization sequence
- 30 ns propagation delay
- Transient immunity: 100 kV/us
- Programmable dead time. 10–200 ns. 40–600 ns
- Deglitch option for filtering noise
- Wide operating range -40 C to 125 C
- RoHS-compliant packages: SOIC-14/16 wide body. SOIC-16 narrow body
- AEC-Q100 qualification
- Automotive-grade OPNs available. AIAG compliant PPAP documentation support. IMDS and CAMDS listing support
Applications
- Power delivery systems
- Motor control systems
- Isolated dc-dc power supplies
- Lighting control systems
- Solar and industrial inverters
- On-board chargers
- Battery management systems
- Charging stations
- Traction inverters
- Hybrid Electric Vehicles
- Battery Electric Vehicles
