STK681-310

No. A0761-3/10

Derating Curve of Motor Current, IO, vs. STK681-310 Operating Board Temperature, Tc

The range of DC operating current lies within the above derating curve in the VCC1 allowable operating range.

The above motor current IO is valid within the chopping operating range of VCC1=28V or lower.

The above operating substrate temperature, Tc, is measured immediately when the motor is started.

Since Tc fluctuates due to the ambient temperature, Ta, the motor current value, and continuous or intermittent

operations of the motor current, always confirm this values using an actual set.

STK681-310 Allowable Brake Current Range

1.0

0.5

0

080

20

40

60

100

70

10

30

50

90

110

ITF02531

2.5

3.0

4.0

4.5

3.5

2.0

1.5

IO - Tc

Operating Substrate Temperature, Tc-

°C

2

1

0

5

9

6

7

8

4

3

1.0

7

5

3

2

10

7

5

3

2

100

7

5

3

2

1000

ITF02532

Tc=25

°C

70

°C

80

°C

90

°C

105

°C

IOB - t

Conduction Time, t - ms