This driver technology can cope with 1200V Apps

Driver ICs that have output currents from 2.5 to 8A have been developed by power electronics company, Power Integrations. The company says this is the highest output current performance available without using an external booster. These galvanically isolated single-channel SCALE-iDriver ICs drive IGBTs and MOSFETs and bring the company’s FluxLink magneto-inductive bi-directional communications technology to 1200V driver applications. FluxLink is a communication technology that lets feedback information cross isolation barriers without employing any magnetic materials. It also provides a high communication bandwidth which enables rapid load-transient response.

Operational advantages

One of the operational advantages of FluxLink is it does not suffer from typical optocoupler degradation mechanisms. It is embedded into the package and by eliminating bulky optocouplers it saves space and increases power density. It complies with UL and TUV global isolation standards and the demanding CQC 5,000 metre Chinese standard. FluxLink technology also eliminates unreliable optoelectronics and associated compensation circuitry that boosts operational stability. The new gate drivers have system safety and protection features found in medium and high-voltage applications and the eSOP package features 9.5mm of creepage and a comparative tracking index of 600.

Cutting component count

SCALE-iDriver single-channel gate driver ICs can reduce component count for inverters up to 110 kW and with the addition of a simple, low-cost booster stage Power Integrations says it is now quicker to develop efficient, space-saving and reliable inverter designs rated up to 400 kW (15 A). The new devices meet the IEC 60664-1 and IEC 61800-5-1 standards, and operate from -40°C to +125°C and at frequencies of up to 250 kHz. They also feature the Advanced Soft Shut Down (ASSD) mechanism that protects the power semiconductor switch in the event of a short circuit. ASSD is automatically triggered by monitoring de-saturation levels and requires no extra components. The company says SCALE-iDriver ICs suit applications in industrial drives, power supplies and UPS, photovoltaic inverters of all sizes, industrial HVAC, EV charging and traction equipment including commercial EVs