The E523.50 IC is a compact and robust high-voltage BLDC (brush-less DC) motor driver for industrial and automotive applications.
A DC/DC buck converter efficiently provides a 11V/100mA supply for the gate drivers and other loads. An internal 3.3V regulator can supply a small microcontroller up to 20mA. An optional external transistor can be used for larger load currents.
The IC contains 3 half-bridge gate drivers (3 high-side and 3 low-side gate drivers). They are controlled by a high-voltage enable input, a digital RUN pin and 6 digital control inputs. The device is configurable for 6 direct control inputs, or 3 enable inputs and the 3 PWM inputs. In the latter case, dead time can be adjusted with an external resistor. Two error outputs indicate overcurrent, undervoltage and overtemperature conditions.
Internal temperature monitoring and a thermally efficient exposed pad QFN package allow the IC to operate close to its maximum junction temperature of +150°C.
Supply voltage range from 12V to 72V, operational down to 7V
DC/DC converter for 11V/100mA
3.3V/20mA supply for micro-controller, optional external NPN transistor for higher load current possible
200mA gate drivers including protection features
Configurable for 6 individual PWM inputs or Drive3 Mode (3EN + 3 PWM)
Programmable dead time
High-voltage enable input
Fast 500ns current sense amplifier
Integrated Back EMF Interface
Undervoltage, overcurrent and overtemperature protection