A4915: 3-Phase MOSFET Driver

The A4915 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 6 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, required for N-channel MOSFETs.

Internal synchronous rectification control circuitry 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 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 (Pb) free, with 100% matte-tin leadframe plating.

DATASHEETS
SAMPLE & BUY

Astrorep Inc. (Allegro and Sanken Semiconductors, Sanken Power Supplies)
141 John Street, Suite 300
Babylon, NY 11702
Phone: (631)422-2500
Fax: (631)422-2504
Web: www.astrorepinc.com
Email: donna.tweedy@astrorepinc.com

If this is not your local representative, find your local sales rep here.

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  • Features and BenefitsFeatures and Benefits
  • PackagingPackaging
  • Technical DocsTechnical Docs
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  • 5 to 50 V supply voltage
  • Latched TSD with fault output
  • Drives six N-channel high current MOSFETs
  • Internally controlled synchronous rectification
  • Speed voltage input enables internal PWM duty cycle control of full bridge
  • Center aligned PWM
  • Internal UVLO and crossover current protection
  • Hall switch inputs
  • Adjustable dead time protection
  • Low power sleep mode for battery-powered applications
Packages

Presentations

Design Support Tools

When ordering an APEK4915MET-01-T demo board, please remember to order both part numbers:

Part Numbers  
APEK4915MET-01-T Demo Board
A4915METTR-T Sample Parts


When ordering an APEK4915MLP-01-T demo board, please remember to order both part numbers:

Part Numbers  
APEK4915MLP-01-T Demo Board
A4915MLPTR-T Sample Parts

 

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Product Image Functional Block Diagram

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check
Distributor Stock
A4915METTR-T 28-lead QFN -20°C to 105°C Yes View Data Contact your
local sales rep
Check Stock
A4915MLPTR-T 28-lead TSSOP -20°C to 105°C Yes View Data Contact your
local sales rep
Check Stock
APEK4915MET-01-T DEMO BOARD -20°C to 105°C No -- Contact your
local sales rep
Check Stock
APEK4915MLP-01-T DEMO BOARD -20°C to 105°C No -- Contact your
local sales rep
Check Stock

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