Si828x Isolated Gate Drivers

The Silicon Labs Si828x family is ideal for driving IGBTs used in a wide variety of inverter and motor control applications. The Si828x devices are isolated, high current gate drivers with integrated system safety and feedback functions.   Our isolation 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. Based on our proprietary silicon isolation technology, the drivers support up to 5.0 kVRMS and withstand voltage per UL1577.  The input to the device is a complementary digital input and can be utilized in several configurations.

The input side of the isolation has several control and feedback digital signals. The controller to the device receives information about the driver side power state and fault state and recovers the device from fault through an active-low reset pin.

On the output side, the Si828x provides separate pull-up and pull-down pins for the gate. A dedicated DSAT pin detects the desaturation condition and immediately shuts down the driver in a controlled manner. A Miller clamp is also integrated to facilitate a strong turn-off of the power switch. 

Orderable options in the Si828x family make many additional useful features available. The Si8281/82/83/84 adds an integrated, isolated dc-dc controller. The controller provides a simple method for providing the isolated power rail necessary for the isolated driver and significantly simplifies layout. The Si8286 is packaged in a configuration common to many optocoupler-based IGBT drivers.

Features

  • 4 A IGBT driver
  • 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
  • Power ready pin
  • Complementary driver control input
  • Integrated dc-dc converter
    • Fully-integrated, secondary sensing, feedback controlled converter with dithering for low EMI
    • dc-dc converter efficiency of 83%
    • dc-dc shutdown, programmable frequency control and soft start
  • Compact packages: 16-pin, 20-pin, and 24-pin Wide-Body SOIC
  • Industrial temperature range: -40 to 125 °C


Si828x Product Matrix

Devices
Part Number Data Sheet Evaluation Kit Isolation Rating (Output-Output Vdc) Overlap Protection and Dead Time Control AEC-Q100 Package Type Temperature Range (°C) Driver Supply Min (V) Driver Supply Max (V) Input Supply (V) Peak Output Current (A) Input Type Max Propagation Delay (ns) UVLO Voltage (V) Isolation Rating Input-Output (kV rms) 10 kV Surge
Si8281-KIT 5000 No Yes WB SOIC20 -40 125 9.5 30 2.5 5.5 4 PWM 65 9 5 Yes
Si8281-KIT 5000 No Yes WB SOIC20 -40 125 9.5 30 2.5 5.5 4 PWM 65 12 5 Yes
Si8281-KIT 5000 No Yes WB SOIC20 -40 125 9.5 30 2.5 5.5 4 PWM 65 9 5 Yes
Si8281-KIT 5000 No Yes WB SOIC20 -40 125 9.5 30 2.5 5.5 4 PWM 65 12 5 Yes
Si8284-KIT 5000 No Yes WB SOIC24 -40 125 9.5 30 2.5 5.5 4 PWM 65 9 5 Yes
Si8284-KIT 5000 No Yes WB SOIC24 -40 125 9.5 30 2.5 5.5 4 PWM 65 12 5 Yes
Si8284-KIT 5000 No Yes WB SOIC24 -40 125 9.5 30 2.5 5.5 4 PWM 65 9 5 Yes
Si8284-KIT 5000 No Yes WB SOIC24 -40 125 9.5 30 2.5 5.5 4 PWM 65 12 5 Yes
Si8285-86-KIT 5000 No Yes WB SOIC16 -40 125 9.5 30 2.5 5.5 4 PWM 65 9 5 Yes
Si8285-86-KIT 5000 No Yes WB SOIC16 -40 125 9.5 30 2.5 5.5 4 PWM 65 12 5 Yes
Si8285-86-KIT 5000 No Yes WB SOIC16 -40 125 9.5 30 2.5 5.5 4 PWM 65 9 5 Yes
Si8285-86-KIT 5000 No Yes WB SOIC16 -40 125 9.5 30 2.5 5.5 4 PWM 65 12 5 Yes
Contact Sales Contact Sales
Close
Loading Results