AN4243

Application information

Doc ID 024199 Rev 1

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Application information

Here below some general suggestions for applications based on the L6230 three-phase

BLDC motor driver.

frequency filtering on the power supply and reduce high frequency transients generated by

the switching.

set the delay time and disable time when an overcurrent is detected (see Section 2.10).

with a trace length as short as possible in the layout. The sense resistors should be non-

inductive resistors to minimize the dI/dt transients across the resistors.

To increase noise immunity, unused logic pins are connected either to 5 V (high logic level)

or GND (low logic level).

The power ground and signal ground have to be kept separated on PCB.

In Table 2, recommended values are reported for external components.

Table 2.

Component values for typical applications

Component

Value

Description

100

µF

Bulk capacitor

100 nF

220 nF

pump)

5.6 nF

Capacitor connected to DIAG-EN pin

10 nF

Fly capacitor connected to CP pin (charge pump)

1N4148

Charge pump diode

1N4148

Charge pump diode

100 k

Ω

Resistor connected to DIAG-EN pin