ISODrivers with System Safety Features

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Product Information

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The Si8286 is isolated, high current gate drivers with integrated system safety and feedback function. The device is ideal for driving power MOSFETs and IGBTs used in a wide variety of inverter and motor control applications. The Si8286 isolated gate driver utilizes Silicon Labs' proprietary silicon isolation technology, supporting up to 5.0 kVrms withstand voltage per UL1577. This technology enables higher-performance, reduced variation with temperature and age, tighter part-to-part matching, and superior common-mode rejection compared to other isolated gate driver technologies.

The input to the device is a complementary digital input that can be utilized in several configurations. The input side of the isolation also has several control and feedback digital signals. The controller to the device receives information about the driver side power state (Si8285) and fault state of the device and recovers the device from fault through an active-low reset pin.

On the output side, the Si8285 provides separate pull-up and pull-down pins for the gate. The Si8286 has a single pin for both functions. A dedicated DSAT pin detects the desaturation condition and immediately shuts down the driver in a controlled manner. The Si8285 device also integrates a Miller clamp to facilitate a strong turn-off of the power switch.

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.

Industrial Applications:
• IGBT/ MOSFET gate drives
• Industrial and renewable energy inverters
• AC, Brushless, and DC motor controls and drives
• Variable speed motor control in consumer white goods
• Isolated switch mode and UPS power supplies

Automotive Applications:
• Hybrid electric and electric vehicles
• Traction inverters
• Electric motor controllers
• Inductive chargers

Safety Regulatory Approvals (Pending):
• UL 1577 recognized
• Up to 5000 VRMS for 1 minute
• CSA component notice 5A approval
• IEC 60950-1 (reinforced insulation)
• VDE certification conformity
• VDE0884 Part 10 (basic insulation)
• CQC certification approval
• GB4943.1 (reinforced insulation)

Symmetry Electronics is an authorized Silicon Labs distributor.


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Enables use with IGBTs rated for 1200 V VCE, 300 A IC
System Safety Features
DESAT detection
FAULT feedback
Undervoltage Lock Out (UVLO)
Soft shutdown on fault condition
Silicon Labs high-performance isolation technology
Industry leading noise immunity
High speed, low latency and skew
Best reliability available
30 V driver-side supply voltage
Integrated Miller clamp (Si8285 only)
Power ready pin (Si8285 only)
Complementary driver control input
Si8286 pin-out compatible with HCPL-316J
Compact package: 16-pin wide-body SOIC
Industrial temperature range: 40 to 125C
Automotive-grade OPNs available
AIAG compliant PPAP documentation support
IMDS and CAMDS listing support
AEC-Q100 Qualified


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