200W motors run with lowers losses, with ST IPMs

March 16, 2016 // By Graham Prophet
Intelligent power modules enable low-power electric motors to dissipate less power with intelligent power modules (IPMs) in STMicroelectronics’ SLLIMM-nano 2nd series, adding higher power levels and new package options that are especially suited to increasing the efficiency and reducing cost.

The SLLIMM-nano (small low-loss intelligent moulded module) devices suit compressors, pumps, and fans in domestic appliances such as refrigerators and washing machines, and any low-power motors working up to 20 kHz in hard-switching circuits in an application power range up to 200W.

 

SLLIMM-nano devices integrate three half-bridge high-voltage gate drivers, six IGBTs, and six fast and ultra-soft freewheeling recovery diodes, as well low-voltage input logic that allow the devices to implement the complete interface between a low-power microcontroller and a mains-powered three-phase electric motor. The design of the embedded IGBTs (a planar technology for the 3A and a dedicated TFS (trench-gate field stop) technology for the 5A version) and the freewheeling diodes are tailored to offer the best trade-off between switching and conduction losses for low-power BLDC (Brushless DC) motor applications, resulting in high efficiency and low electromagnetic interference.

 

Features include;

3A-5A current rating at 25°C, with 600V breakdown voltage;

Lower VCE(sat) 1.65V even at 5A, due to the TFS technology;

Low EMI

Mounted slot package options allowing easier and lower-cost heatsink assembly;

Integrated bootstrap diode for lower BOM and simplified PCB layout;

150°C maximum operating junction temperature;

Integrated op amp and comparator that can be used for protection circuits;

Separate open emitter outputs to simplify PCB routing for both single and three shunt solutions;

NTC (Negative Temperature Coefficient) for temperature monitoring;

Smart shutdown function;

In-line and zig-zag lead options, with/without stand-off, for maximum layout flexibility;

1500 Vrms minimum isolation.

 

The first members the SLLIMM-nano 2nd series in N2DIP-26L packages are priced from $7.5 (1000).

 

ST; www.st.com