Small intelligent power device for BLDC motor drives

Toshiba Electronics Europe GmbH has released a small new intelligent power device (IPD) for space-constrained BLDC motor drive applications such as air conditioners, air purifiers, and pumps.

The new IPD (TPD4165K) has an increased maximum output current of 3A, compared to the 2A rating of the company's existing products, like TPD4163K or TPD4164K. This extends the range of supported equipment and allows usage in higher-power applications. The device is suitable for sine-wave drive.

As power supply voltage may fluctuate greatly in some regions where the IP could be used, the absolute maximum voltage rating (VBB) has been increased to 600V to improve long-term reliability. This represents a 20% increase over the company's previous products (TPD4123K, TPD4123AK, TPD4144K, TPD4144AK, TPD4135K, TPD4135AK).

The new device is housed in a through-hole HDIP30 package. This has a 21% smaller footprint than the DIP26 package used for many of its previous products, simplifying the design process for challenging space-constrained applications. The new device measures only 32.8mm x 13.5mm x 3.525mm. It supports three-shunt or single-shunt resistor circuit for current sensing.

The new IPD includes a range of safety features, including overcurrent, undervoltage, and thermal shutdown. Also, an external signal can be applied to the SD pin to control the output stage's behaviour. The DIAG output pin supplies the status of the safety conditions.

Designers can freely access a reference design for a sensorless BLDC motor drive circuit based upon the new TPD4165K and the company's TMPM374FWUG MCU with vector control engine capability. The reference design data can be downloaded from the 'Learn more' button.