STK681-352-E 데이터 시트보기 (PDF) - ON Semiconductor

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STK681-352-E

Forward/Reverse Motor Driver

ON Semiconductor 

STK681-352-E

Derating Curve of Motor Current, IO, vs. STK681-352-E Operating Board Temperature, Tc

7

DC

6 PWM(VCC=24V)

5

IO - Tc

4

3

2

1

0

0 10 20 30 40 50 60 70 80 90 100 110

Operating Substrate Temperature, Tc- C

(The maximum PWM frequency is 50kHz.)

The PWM frequencies in the above graph indicate the ENABLE signal.

The same PWM IO derating curves as those shown above will be obtained when the internal PWM frequency of the

STK681-352-E is used.

Increasing the VCC supply voltage narrows the IO derating curve range, so IO should be set in reference to the above

graph.

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.

The Tc temperature should be checked in the center of the metal surface of the product package.

STK681-352-E Allowable Brake Current Range (Low side: F3, F4=ON)

IOB - t

13

12

11

Tc=25°C

10

9

8

70°C

80°C

7

90°C

6

105°C

5

1.0 2 3 5 7 10 2 3 5 7 100 2 3 5 7 1000

Conduction time, t - ms

No.A1929-3/14

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