Unique control signals used by SKYPERS 42 LJ drive unit for more efficiency / signal precision is +/- 1,5ns jitter

To increase the efficiency of inverters up to 400kW, circuit topologies are developed that are optimized for specific applications.  However, interleaved, multilevel and parallel circuits that improve IGBT efficiency also place higher requirements on signal performance. The new drive unit SKYPER 42 LJ by SEMIKRON combines the benefits of digital signal consistency while maintaining full functionality.  

The SKYPER 42 LJ is a dual-channel IGBT driver unit for 600V, 1,200V and 1,700V IGBT modules. It reliably controls IGBT modules up to 1,000 Amperes with an output current of 80 mA with a maximum switching frequency of 100 kHz. The highly integrated SEMIKRON ASICs and an optimum power supply concept guarantee extreme signal precision with a maximum jitter of just +/- 1.5ns across the entire temperature range. In combination with the low tolerances of the SEMIKRON ASICs the SKYPER 42 LJ achieves runtime differences below 20 nanoseconds. Due to the adjustable short impulse suppression and stabilized gate voltages empower an uncompromising parallel IGBT control.    

Despite its high performance, the SKYPER 42 LJ offers maximum security. SoftOff and overvoltage recognition securely switch off any current. The separate transfer of switching and error signals allows for rapid error feedback, even in 3-level applications. Thanks to the adjustable error management, both the integrated protection circuit and the paramount controller are able to quickly respond to system errors. The isolated information transfer uses square wave signals, which makes at significantly more robust than traditional inductive transfer. This way, the driver unit safely switches interfering voltages up to 4kV on the signal wires. The SKYPER 42 LJ can run external circuits for excess temperature or excess voltage without a separate power supply, so the error signal can be transmitted to the control unit separately.    

With its MTBF Rate (Mean Time Between Failures pursuant to SN29500) of six million hours under full load, the driver unit will safely outlive any industrial lifecycle.    


SEMIKRON is a global manufacturer of power semiconductors, primarily in the medium power range (approx. 2kW to 10MW). Applications include speed-controlled industrial drive units, automation technology, welding equipment and elevators. Other applications include uninterrupted power supply (UPS), renewable energies (wind, solar) as well as electric and hybrid vehicles (commercial cars, conveyances, sports cars, passenger cars). The family enterprise has its headquarters in Nuremberg, Germany. It was founded in 1951, and employs more than 3,000 people worldwide. An international network of 37 companies and production plants in Brazil, China, France, India, Italy, Korea, Slovakia, South Africa and the USA ensures rapid and comprehensive services for local customers. With the foundation of its subsidiary, SindoPower, in 2009, SEMIKRON also extended its distribution channels. SindoPower, an e-commerce company, sells power electronic products online, and offers competent technical consulting to small and medium businesses.