SLA7032M datasheet(6/8 Pages) SANKEN

部品番号	SLA7032M

部品情報	2-Phase Stepper Motor Unipolar Driver ICs

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メーカー	SANKEN [Sanken electric]

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33

SLA7032M/SLA7033M

2-Phase Stepper Motor Unipolar Driver IC (2-Phase/1-2 Phase Excitation)

50

40

30

20

10

0

100

500

1K

5K

Response frequency (pps)

Without heatsink

Natural cooling

Motor : 23PM-C705

Motor current IO=1.5A

Ta=25

°C

VCC=24V, VS=24V

2-phase excitation

TC( 4 pin)

30

25

20

15

10

5

0

200

500

1K

Motor : PH265-01B

Motor current IO=0.8A

Ta=25

°C

VCC=24V, VS=24V

2-phase excitation

Response frequency (pps)

Without heatsink

Natural cooling

TC ( 4 pin)

SLA7032M

SLA7033M

Thermal characteristics

Fig. 7 Temperature rise

Fig. 6 Heat dissipation per phase PH vs. Output current IO

Output current IO (A)

Motor : 23LM-C004

Holding mode

0

0.2

0.4

0.6

0.8

1.0

1.2

1.0

0.8

0.6

0.4

0.2

0

VCC

=44V

36V

24V

15V

∆T

j

1

02

3

4

5

∆T

C

Natural cooling

Without heatsink

150

100

50

0

Total Power (W)

Motor : 23PM-C503

Holding mode

4.0

3.0

2.0

1.0

0

1.0

2.0

3.0

Output current IO (A)

SLA7032M

SLA7033M

sThermal Design

An outline of the method for calculated heat dissipation is shown below.

(1) Obtain the value of PH that corresponds to the motor coil current IO from Fig. 6 "Heat dissipation per phase PH vs. Output current IO."

(2) The power dissipation Pdiss is obtained using the following formula.

2-phase excitation: Pdiss

≅ 2PH+0.015×VS (W)

1-2 phase excitation: Pdiss

≅

PH+0.015

×VS (W)

(3) Obtain the temperature rise that corresponds to the computed value of Pdiss from Fig. 7 "Temperature rise."

3

2

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