Power

Pre-driver ICs reduce vibration & noise

12th February 2015
Siobhan O'Gorman
0

Designed for use in high-current cooling fan applications such as PC servers and home appliances, the TC78B006 series of single-phase BLDC motor pre-driver ICs has been introduced by Toshiba Electronics Europe. By utilising a digital-control-type sine wave drive, the devices reduce vibration and noise. 

The ICs feature integrated pre-drive circuitry, which allows them to drive external p-Channel and n-Channel MOSFETs and minimises the number of external components needed to drive motors.

Power consumption is reduced by a power saving standby function which cuts power supply to the Hall element, a magnetic sensor used to detect rotor position and rotation speed.

The TC78B006 series consists of eight models. The TC78B006FNG, TC78B006AFNG, TC78B006FTG and TC78B006AFTG ICs feature PWM duty input control, while the TC78B006BFNG, TC78B006CFNG, TC78B006BFTG and TC78B006CFTG offer analogue voltage input control.

Rotation speed direction output is featured on the FNG, BFNG, FTG and BFTG ICs, while the AFNG, CFNG, AFTG and CFTG offer lock detection output. Operating across a voltage range of 3.5-30V, the ICs feature a quick start function, thermal shutdown, lock protection and auto-restart.

The FNG, AFNG, BFNG and CFNG devices are offered in a 16pin SSOP measuring 5.5×6.4×1.6mm, while the FTG, AFTG, BFTG and CFTG ICs are available in a 16pin QFN, which measures 3×3×0.7mm.

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