BA6438 Ver la hoja de datos (PDF) - ROHM Semiconductor

Número de pieza

componentes Descripción

Lista de partido

BA6438

3-phase motor driver

ROHM Semiconductor 

Motor driver ICs

!Electrical characteristic curves

0.7

VCC=5V, VM=12V, RATC=0.5Ω

0.6

(H1+ , H2+ , H3+ ) = (LMH)

0.5

0.4

0.3

0.2

0.1

0

0

1.0

2.0

3.0

4.0

5.0

TORQUE CONTROL : EC (V)

Fig.9 Output current vs. torque

control voltage (Ι)

160

VCC=5V

140

VM=12V

RATC=0.5Ω

120

(H1+ , H2+, H3+)

100

= (LMH)

80 (H1+ , H2+, H3+)

= (LLH)

60

40

20

0

−800 −600 −400 −200 0

200 400

TORQUE CONTROL : EC (mV)

Fig.10 Output current vs. torque

control voltage (ΙΙ)

BA6438S

30

VCC=5V,VM=12V,RATC=0.5Ω

(H1+ , H2+ , H3+) = (LMH)

25

20

15

10

5

0

−120 −80 −40 ECR +40 +80

(2.5V)

TORQUE CONTROL : EC (mV)

Fig.11 Output current vs. torque

control voltage (ΙΙΙ)

1.8

1.6

1.4

1.2

1.0

HIGH level output voltage

(1, 3, 23pin)

0.8

0.6

0.4

0.2

0

0

200 400 600 800 1000

OUTPUT CURRENT : IOH (mA)

Fig.12 Output high level voltage

vs. output current

1.8

1.6

LOW level output voltage

1.4

(1, 3, 23pin)

1.2

1.0

0.8

0.6

0.4

ATC(2pin)

Pin voltage

0.2

(RATC = 0.5Ω)

0

0

400

800

1200

OUTPUT CURRENT : IOL (mA)

Fig.13 Output low level voltage

vs. output current

70

VCC=5V, VM=12V, RATC=0.5Ω

EC=OV, ECR=2.5V

60

50

40

30

20

10

0

0

0.2

0.4

0.6

TORQUE LIMIT VOLTAGE : TL(V)

Fig.14 TL-CS offset vs. torque

limit voltage

VCC=5V

1M

500k

300k

200k

100k

50k

50 100 200 300 500 1000

OSC PIN CAPACITANCE(PF)

Fig.15 Capacitance of the capacitor

connected to the OSC pin vs.

oscillation frequency

5

4

Ec=2.3V 2V 1.0V 0.5V

3

1.5V

2

1

0

0 0.5 1.0 1.5 2.0 2.5 3.0

VM -VOH (V)

Fig.16 High-side saturation detection

output voltage (pin 14) vs.

output voltage

6

VCC=5V

5

4

3

2

1

0

10 20 30 40 50 60

SINK CURRENT(13pin) (mA)

Fig.17 Switching regulator sink

current vs. output voltage

Share Link: