Three-phase MOSFET motor control IC
17/06/2013 Allegro Microsystems Europe Ltd
- Designed for commercial and industrial applications, the A4915 can support load currents in excess of 150 AThe new A4915 from Allegro MicroSystems Europe is a 3-phase MOSFET motor control IC that is designed for pulse-width-modulated (PWM) current control of 3-phase brushless DC motors.
The A4915 is capable of high-current gate drive for six all N-channel power MOSFETs. An internal charge pump ensures gate drive down to 7 V supply and provides limited gate drive down to 5 V. A bootstrap capacitor is used to generate a supply voltage greater than the source voltage of the high-side MOSFET: a requirement for N-channel MOSFETs.
Internal synchronous rectification control circuitry with centre aligned PWM is provided to improve power dissipation in the external MOSFETs during PWM operation. Internal circuit protection includes latched thermal shutdown, dead-time protection and undervoltage lockout. Special power-up sequencing is not required.
The A4915 is targeted at both the industrial and consumer markets for end applications including power tools, lawn and garden equipment, pumps, and household appliances.
The A4915 is supplied in a 28-pin TSSOP with an exposed thermal pad (suffix LP) and a 28-contact 5 × 5 mm QFN with an exposed thermal pad (suffix ET). These packages are lead (Pd) free, with 100% matt tin leadframe plating.
Please click here to download a copy of the data sheet.
For further information please contact:
Allegro MicroSystems Europe Ltd
Melita House
124 Bridge Road
Chertsey
Surrey
KT16 8LH
Tel: +33 (0) 4 50512359
Fax: +33 (0) 4 505 12083
allegroeurope@allegromicro.com
http://www.allegromicro.com
Print this articleShare article:
Process and Control Today are not responsible for the content of submitted or externally produced articles and images. Click here to email us about any errors or omissions contained within this article.