Diodes AM4963/AM4963R Uživatelský manuál stáhnout pdf (Strana 13)

Data Sheet

Single Phase Full Wave Direct PWM Motor Driver AM4963/AM4963R

Sep. 2011 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

0 20406080100

100

=12V

=30

=38

Output Duty Cycle (%)

Input Duty Cycle (%)

5678910

=TSM2A103F39H1RZ

Low Corner Temperature (

R8 (kΩ)

40 60 80 100 120 140 160 180 200 220 240

Input duty cycle=100%

=30

High Corner Temperature (

R9 (kΩ)

28 30 32 34 36 38 40

100

Input duty cycle=20%

Input duty cycle=50%

Input duty cycle=70%

Input duty cycle=100%

Output Duty Cycle (%)

(

Typical Application (Note 4, Continued)

Note 4: Some typical performance curves of applications based on circuits above (Figure 10, 11) are shown as

below (R1 to R6 open, R8=8kΩ, R9=150kΩ).

Figure 12. Output Duty Cycle vs. Input Duty Cycle Figure 13. Output Duty Cycle vs. T

Figure 14. Low Corner Temperature vs. R8 Figure 15. High Corner Temperature vs. R9 (Note 5)

Note 5:

1) Low corner temperature (T

) is set by thermal resistor R

and R8; R

=R8 when at temperature T

2) High corner temperature (T

) can be expressed as: T

≈T

+5*R9/100k.

3) First, set T

, then T

1 2 ... 8 9 10 11 12 13 14 15 16

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