The AMT49413 is a 3-phase brushless DC (BLDC) motor controller for use with N-channel external power MOSFETs. It incorporates much of the circuitry required to design a cost effective three-phase motor drive system. The AMT49413 provides functionality over a wide input supply range. A unique charge pump regulator provides adequate (>10 V) gate drive for battery voltages down to 7 V, and allows the device to operate with a reduced gate drive at battery voltages down to 5.5 V. Torrent La Maison Du Lac. Power dissipation in the charge pump is minimized by switching from a voltage doubling mode at low supply voltage to a dropout mode at the nominal running voltage of 14 V.

A bootstrap capacitor is used to provide the above-battery supply voltage required for N-channel MOSFETs. An internal charge pump for the high-side drive allows for DC (100% duty cycle) operation. Internal fixed-frequency PWM current control circuitry can be used to regulate the maximum load current. The peak load current limit is set by the selection of an input reference voltage and external sensing resistor. The PWM frequency is set by a user-selected external RC timing network. For added flexibility, the PWM input can be used to provide speed and torque control, allowing the internal current control circuit to set the maximum current limit. Efficiency is enhanced by using synchronous rectification.

Analog Devices' MOSFET driver family provides high speed, high current MOSFET drive capability for efficient switching conversion in ac-to-dc and isolated dc-to-dc converters. The driver family utilizes an industry-standard footprint, but adds overtemperature and precision enabled protection features to enhance overall.

A full suite of protection features is provided including MOSFET crossover control with dead time, undervoltage, overvoltage, HALL logic fault, low motor current and short to ground, supply and across motor winding. The dead time can be set by a single external resistor. The AMT49413 is supplied in a 48-pin QFN with exposed thermal pad. This is a small footprint (49 mm2) power package, that is lead (Pb) free, with 100% matte-tin leadframe plating.

A MOSFET driver IC (like the ICL7667 you mentioned) translates TTL Or CMOS logical signals, to a higher voltage and higher current, with the goal of rapidly and completely switching the gate of a MOSFET. An output pin of a microcontroller is usually adequate to drive a small-signal logic level MOSFET, like a 2N7000.

However, two issues occur when driving larger MOSFETs: • Higher gate capacitance - Digital signals are meant to drive small loads (on the order of 10-100pF). This is much less than the many MOSFETs, which can be in the thousands of pF. • Higher gate voltage - A 3. Onda Mt833up Driver Windows 7 Download here. 3V or 5V signal is often not enough. Usually 8-12V is required to fully turn on the MOSFET. Finally, many MOSFET drivers are designed explicitly for the purpose of controlling a motor with an H-bridge. Yes, it's about maximizing the switching speed by dumping lots of current into the gate, so that the power MOSFET spends the least amount of time possible in the transition state, and therefore wastes less energy and doesn't get as hot. It says as much in the datasheets of the parts you listed:) The ICL7667 is a dual monolithic high-speed driver designed to convert TTL level signals into high current outputs.

Its high speed and current output enable it to drive large capacitive loads with high slew rates and low propagation delays. The ICL7667’s high current outputs minimize power losses in the power MOSFETs by rapidly charging and discharging the gate capacitance.