highpowerZONE Products for the week of September 17, 2007

Fairchild Semiconductor Says…

FSBB30CH60B: Power Modules Maximize Space, Efficiency, and Reliability
For Home Appliances and Industrial Motors Up to 3 kW

Fairchild Semiconductor introduced ten new highly efficient, integrated Motion-SPM power modules for home appliances and industrial motors up to 3kW. Integrating fully tested three HVICs, one LVIC, six NPT IGBTs, six FRDs and three bootstrap diodes into a compact 44mm X 26.8mm Mini-DIP package, these Motion-SPM modules offer superior inverter-based control for energy-efficient 3-phase motors. Replacing as many as 22 discrete components, these products are instrumental in reducing board space, decreasing manufacturing costs and speeding time-to-market, and increasing system reliability.

“Fairchild continues to innovate its product offering by providing leading SPM® power modules solutions. We have integrated three bootstrap diodes with bootstrap resistor characteristics into currently available SPM modules to make a simpler and smaller board design possible, eliminating an additional six external components. These modules feature NPT IGBTs that provide optimal trade-offs between conduction losses and switching losses and high guaranteed junction temperature to improve system efficiency and reliability.” said Taehoon Kim, vice president of Fairchild’s Functional Power Solutions. “Fairchild’s Motion-SPM power modules are ideal solutions for energy and cost-restricted motor applications.”

EN-Genius Says…

The Motion-SPM modules from Fairchild have gotten better and better with every iteration, and this new release shows no exception.

For me, the notion of having just one ground in a 3-kW system, for example, (optocoupler free) is worth its price already! The modules are in Fairchild's mini-DIP packaging (if you can think of 44 mm x 26.8 mm as "mini') with the lower power modules fully molded and a direct-bonded copper (DBS) substrate provided for the higher powers. The modules replace 22 discrete components -- and an almighty headache in providing a discrete solution.

The inverter low side consists of three IGBTs, freewheeling diodes for each, and a single controller IC providing gate drive and protection functions. The high side of the inverter also has three IGBTs (with freewheeling diodes) plus individual drive ICs. The power side has four dc-link terminals and three output terminals.

Taking the highest power (3 kW) part, the FSBB30CH60B, as our example the maximum ratings for the supply are 450 V with 30 A on each IGBT collector current and a maximum collector dissipation of 100 W.

The control section can have a supply up to 20 V and the input signal voltage can be between -0.3 V and +17 V. The backstrap diodes are rated at 0.5 A forward current steady state.

These parts have very fast switching times with the slowest number being 800 ns. The dead time is about 1.5 µs.

These are modules that are so specilaized that as an OEM you have to truly have to buy into them, and expect that the vendor is going to treat you with long-term respect and support. Fairchild has shown that this is what they are willing, and happy, to do. This latest iteration will comfort their existing customers that this is an ongoing development and wil persuade new potentials that it is safe to get into the water. Applications will range from three-phase motor applications to washing machines.

The new family of Motion-SPM power modules are in production, all rated for motors of 100 Vac to 253 Vac for loads from 300 W to 3 kW (3 A to 30 A). Maximum dc ratings are 600 V with the change between molded and DBC versions occuring at the 15 A level (where both packages are offered). Pricing for 100-piece lots start at $11.80 for 3 A and go up to $28.40 for 30 A.

Data Sheet FSBB30CH60B