STMicroelectronics FlexSPIN: SPI configurable stepper and DC multi motor driver evaluation board EVAL6460 EVAL6460 Fiche De Données

Codes de produits

EVAL6460

L6460’s main features

L6460

14/139

Doc ID 17713 Rev 1

L6460’s main features

L6460 includes the following circuits:

●

Four widely configurable full bridges:

–

Bridges 1 and 2:

–

Diagonal R

DSon

: 0.6

Ω typ.

–

Max operative current = 2.5 A.

–

Bridges 3 and 4:

–

Diagonal R

DSon

: 0.85

Ω typ.

–

Max operative current = 1.5 A.

●

Possible configurations for each bridge are the following:

–

Bridge 1:

–

DC motor driver.

–

Super DC (bridge 1 and 2 paralleled form superbridge1).

–

2 independent half bridges.

–

1 super half bridge (bridge 1 side A and bridge 1 side B paralleled form

superhalfbridge1).

–

2 independent switches (high or low side).

–

1 super switch (high or low side).

–

Bridge 2 has the same configurations of bridge 1.

–

Bridge 3 has the same configurations of bridge 1 (bridge 3 and 4 paralleled form
superbridge2) plus the following:

–

½ stepper motor driver.

–

2 buck regulators (V

AUX1_SW

, V

AUX2_SW

–

1 Super buck regulator (V

AUX1//2_SW

–

Bridge 4 has the same configurations of bridge 1 plus the following:

–

½ stepper motor driver.

–

1 super buck regulator (V

AUX3_SW

–

Battery charger.

●

One buck type switching regulator (V

SWmain

) with:

–

Output regulated voltage range: 1-5 Volts.

–

Output load current: 3.0 A.

–

Internal output power DMOS.

–

Internal soft start sequence.

–

Internal PWM generation.

–

Switching frequency: ~250

kHz.

–

Pulse skipping strategy control.

●

One switching regulator controller (V

SWDRV

) with:

–

Output regulated voltage range: 1-30 Volts.

–

Selectable current limitation.

–

Internal PWM generation.

–

Pulse skipping strategy control.

●

One linear regulator (V

LINmain

) that can be used to generate low current/low ripple