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參數(shù)資料
| 型號(hào)： | MOCZ500 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 繼電器，輸入/輸出模塊 |
| 英文描述： | OPTOISOLATOR ZERO CROSS TRIAC OUTPUT |
| 中文描述： | TRIGGER OUTPUT SOLID STATE RELAY, 7500 V ISOLATION-MAX |
| 文件頁數(shù)： | 4/8頁 |
| 文件大?。?/td> | 222K |
| 代理商： | MOCZ500 |
4
Motorola Optoelectronics Device Data
TYPICAL ELECTRICAL CHARACTERISTICS
(continued)
300
250
200
150
100
50
100
80
60
40
20
0
–20
–40
TA, AMBIENT TEMPERATURE (
°
C)
Figure 7. Holding Current versus
Ambient Temperature
,
μ
I
A
V
11.5
11
10.5
10
9.5
9
–40
100
80
60
40
20
0
–20
TA, AMBIENT TEMPERATURE (
°
C)
Figure 8. Inhibit Voltage versus
Ambient Temperature
APPLICATION CONSIDERATIONS
Input Drive Circuit
The MOCZ500 SSR is guaranteed to trigger with an input
current of 10 mA at 25
°
C. This trigger current increases with
lower ambient temperatures as shown on Figure 3 Forward
Trigger Current (IFT) versus Ambient Temperature.
When the input drive circuit is capable to supply the
MOCZ500 input LED trigger current, only a current limiting
resistor in series with the LED is required. TTL, DTL and
microcontrollers with enhanced current capability output
ports are able to meet this requirement.
Most CMOS logic circuits and Microcontroller output
ports are not rated to sink or source currents required to
trigger the MOCZ500. In this case a drive circuit is required
as shown in Figure 10 or a TTL buffer interface circuit as
shown in Figure 9.
Figure 9. Input Drive Circuit
R1 for VCC (low) 4.5 V, IFT = 10 mA, VF LED = 1.2 V, VOL = 0.5 V
R1 = (4.5 V – 1.2 V – 0.5 V): 10 mA = 280
Choose 270
R1
VCC
TTI/DTL
Snubber Circuit
Snubberless operation of resistive loads is possible, but
snubbers are recommended for all applications. A typical ap-
plication is shown in Figure 11. The snubber attenuates the
high kickback voltages and commutating dv/dt generated by
inductive loads during the turn off of the SSR. It also protects
the SSR from line transients generated elsewhere within the
equipment (for example inductive loads switched by me-
chanical contacts such as relays manual on/off switches etc.)
or outside the equipment such as air conditioners, electrical
heaters and motors.
Figure 10. Noninverting Discrete NPN Buffer
and Level Shifter
R1
VCC
R2
Vin
Q1
MOCZ500
R1
VCC
R2
Q1
MOCZ500
μ
P
LOAD
Rs
Cs
AC LINE
Buffer Circuit
R1 = (VCC – VFLED – Vsat Q1): IF MOCZ500
R2 = 10 k
Q1 = General Purpose Trans. NPN
Typical Snubber circuit:
For inductive and resistive loads Rs = 45
Cs = 0.01
μ
F
Figure 11. Typical Application with an
μ
P Output Buffer
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