Fairchild Semiconductor launches SPM® Products for driving two-phase switched reluctance motors

Citation

(2008), "Fairchild Semiconductor launches SPM® Products for driving two-phase switched reluctance motors", Microelectronics International, Vol. 25 No. 3. https://doi.org/10.1108/mi.2008.21825cad.004

Fairchild Semiconductor launches SPM® Products for driving two-phase switched reluctance motors

Fairchild Semiconductor launches SPM^® Products for driving two-phase switched reluctance motors

Article Type: New products From: Microelectronics International, Volume 25, Issue 3

Fairchild Semiconductor introduces another industry innovation in SPM technology with the industry’s first SRM-SPM power modules for driving two-phase switched reluctance motors (SRM) in small motor applications such as vacuum cleaners.

SRM are an attractive alternative to AC drives due to their high efficiency. The small motor industry is migrating from single- to two-phase SRM motors due to their ability to startup under difficult load conditions and the lower components that these motors require. Each SRM-SPM module, FCAS20DN60BB and FCAS30DN60BB, integrates two HVICs, one LVIC, four NPT IGBTs, four fast recovery diodes (FRDs), two bootstrap diodes, a thermistor and various protection functions in a single package. By integrating 14 fully tested power components in a compact 45 × 28 mm SIP package, these products offer 40 per cent space savings. This space conservation allows vacuum cleaner designers to incorporate the controller into the SRM assembly, and also improves design productivity and manufacturability. System reliability is further enhanced by incorporating protection features such as under-voltage (UV) lock-out and short-circuit (SC) protection into this thermally efficient package.

“Fairchild continues to provide cutting-edge, efficient solutions that innovate today’s electronics. These SPM power modules for two-phase SRM are an example of how Fairchild provides solutions that deliver excellent performance, while minimizing design and manufacturing time”, said Taehoon Kim, Vice President of Fairchild’s Functional Power Solutions.

The SRM-SPM products offer the following key features:

1. 1.

   Low-loss, efficient IGBTs and FRDs meet low-electromagnetic interference requirements.

2. 2.

   Built-in HVICs offer a single-grounded power supply, which simplifies designs.

3. 3.

   Built-in bootstrap diodes reduce external component count and simplify circuit layout.

4. 4.

   Built-in HVIC/LVIC offers high-noise immunity and protection functions:

5. 5.

   High-side. Control circuit UV protection (without fault signal output).

6. 6.

   Low-side. UV and SC protection through external shunt resistor (with fault signal output).

7. 7.

   SIP package provides extremely low-thermal resistance and space savings.

8. 8.

   About 1,500 V_RMS/min isolation voltage rating and very low-leakage current improve safety.

Fairchild Semiconductor offers a full line of highly integrated smart power modules that provide efficient motor control for a wide range of energy-restricted applications. For further information, please visit the web site: www.fairchildsemi.com