Fig 3. SINGLE AND DUAL MIXED-DECAY MODES

Fig 4. LS8292 DRIVING TWO-PHASE BIPOLAR MOTOR

Time

Icoil

Tdcyu

Tdcyd

Slow

Decay

Dual or Single

Mixed Decay

Dual Mixed

Decay

Slow

Decay

Slow

Decay

Step up

Step down

Tpwm

uC

M0

M1

DCYM

RESET/

STEP/

FWD

EN/

INH1/

INH2/

PHA

PHB

PHC

PHD

Rb

Cb

Rd

Cd

TBLNK

TDCYD

+5V

+5V

5MHz

10MΩ

Cm

Cm

XTLO

XTLI

LS8292

1

2

3

4

5

6

7

9

10

16

17

INH1/

INH2/

A

B

C

D

Rs

Rs

DGND

AGND

SENSE1

SENSE2

11

13

15

14

SNS1 SNS2

1

15

L298

+5V

VDD

24

23

22

21

20

19

18

9

VSS

+Vm

Vs

4

8

GND

NOTE. Cm is chosen according to following relation:

Cm = 2(Cl – Cp) – 10pF, where Cl = Crystal load capacitance and Cp = parasitic capacitance

6

11

5

7

10

12

O1

O2

O3

O4

2

3

13

14

8292-061413-6

Vref

Vr

12