Keywords: isolation gate, drive

Core branch of science and technology (Silicon Labs) recently launched IS Odriver product series of new Si828x isolation gate drive series products, designed to protect the power inverter and motor drive applications sensitive insulated gate bipolar transistor (IGBT) IS designed.

Si828x ISOdriver series product provides industrial isolation level (5 KVRMS) and the best features of integration: including matching DC - DC converter, the fastest to saturation detection, good timing characteristics and excellent noise and transient suppression ability.

Si828x series products for industrial motor drives, solar inverter, high voltage power supply converter, continuous electricity supply systems and heating, ventilation and air conditioning (HVAC) compressor control provides the ideal solution. Many of these applications, the system time expected more than 25 years and working conditions, and the isolator could become the first appeared in the system point of failure and life limit element.

Traditional based on light coupling isolator working temperature range, noise disturbance and the limitations of product life, and Si828x isolation gate drive adopts Silicon Labs complete CMOS isolation technique, can work in the industrial temperature range, support for the service life of the product in 100 and meet stringent UL, VDE, CQC and CSA standards.

Si828x series products in the single components of cost-effective integrated the advanced reliable isolation, gate drive technology and rapid current monitoring capability, this design will be able to protect the expensive IGBT switch. High power inverter and power converter system usually USES IGBT as the switch element, and the current status, will destroy the IGBT, damage system main functions, product safety and reduce the reliability of threatening. To realize switch characteristic of IGBT is to use a special monitoring feature of isolated gate drive Si828x components.

Typical Si828x feature is 4 amp gate drive and used to monitor IGBT over-current desaturation detection. Si828x driver closes the switch in a controllable state, at the same time update the controller to protect IGBT and fault state system. Other integration features include separation output, to prevent the parasitic gate conduction Miller rein (Miller clamp), and will feedback to the controller drives the power condition and fault.

Si828x series products include integrated isolation type DC - DC converter driver version, it can help developers to simplify the design layout, reduce the amount of external components and circuit board area, and reduce the complexity of the building and managing multiple power supply area. A single power supply bus can be routed to the whole system without complex spatial layout considerations. Localization drive power supply can reduce the inductance and minimize noise and eliminate voltage transients trigger conditions.

Si828x ISOdriver series product features

Industrial-grade isolation level: high transient suppression capability, high reliability, 5 KVRMS

Isolation gate drive market characteristics of the most complete integration

Matching type integrated DC - DC converter simplified circuit board layout and drive power supply design

The fastest to saturation detection: up to 10 times faster than competitive products

The fastest, most accurate timing characteristics, low transmission delay (less than 55 ns) -- optimal light coupling solution up to 10 times, and is superior to the competition level CMOS solution 2 times

Keep long service life under the condition of high voltage (1000 v 100) under the condition of

Silicon Labs provides three assessment suite to assist developers assessment Si828x ISOdriver performance and key features:

Si8285_86 - KIT Si828x isolation basic functions of the drive

Si8281 - KIT with DC - DC converter isolation drive

Si8284 - KIT which can use the higher power supply voltage of a fully functional DC - DC converter isolation drive

Si828x isolated gate drive is now mass production and can provide the sample evaluation, support a variety of small wide-body SOIC package.