Description
The MPQ6541 is a three-phase brushless DC (BLDC) motor driver with three integrated half-bridges. The three half-bridges consist of six N-channel power MOSFETs. The MPQ6541 also integrates six pre-drivers, two gate driver power supplies, and three current-sense amplifiers.
The MPQ6541 has enable (ENBL) and pulse-width modulation (PWM) inputs for each half-bridge; the MPQ6541A has separate high-side (HS) and low-side (LS) inputs. Otherwise, these parts are identical. References to the MPQ6541 also apply to the MPQ6541A, unless otherwise noted.
The MPQ6541 can deliver up to 12A of peak current for 1 second, or 8A of continuous current, depending on thermal and PCB conditions. The device uses an internal charge pump to generate the gate driver supply voltage for the high-side MOSFETs (HS-FETs), as well as a trickle charge circuit that maintains a sufficient gate driver voltage to operate at 100% duty cycle.
Internal safety features include thermal shutdown, under-voltage lockout (UVLO), and over-current protection (OCP). The MPQ6541 is available in a TQFN-26 (6mmx6mm) package.
4.75V to 40V Operating Supply Voltage
Three Integrated Half-Bridge Drivers
8A of Continuous Output Current (IOUT)
MOSFET On Resistance: 15mΩ per MOSFET
Pulse-Width Modulation (PWM) and Enable (ENBL) Inputs
Internal Charge Pump Supports 100% Duty Cycle Operation
Automatic Synchronous Rectification
Under-Voltage Lockout (UVLO) and Over-Voltage Protection (OVP)
Thermal Shutdown Protection
Over-Current Protection (OCP)
Integrated, Bidirectional Current-Sense Amplifiers
Available in a TQFN-26 (6mmx6mm) Package with Wettable Flanks
Available in AEC-Q100 Grade 1
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