ACPL-K34T-560E 查看數據表（PDF） - Avago Technologies
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ACPL-K34T-560E
Avago Technologies
ACPL-K34T-560E Datasheet PDF : 15 Pages
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Bypass and Reservoir Capacitors
Supply bypass capacitors are necessary at the input buffer and ACPL-K34T output supply pin. A ceramic capacitor with
the value of 0.1 µF is recommended at the input buffer to provide high frequency bypass, which also helps to improve
CMR performance. At the output supply pin (VCC – VEE), it is recommended to use a 10 µF, low ESR and low ESL capacitor
as a charge reservoir to supply instant driving current to MOSFET at VOUT during switching.
ISOLATION
VDD1
0.1 µF
VCC
ISOLATION
VDD1
0.1 µF
VCC
VDD1
Rin1 AN
VDD1
Rin1 AN
VOUT
V OUT
CA
Ro
Rin2
10 µF
VEE
CA
Ro
Rin2
10 µF
V EE
VDD1 = 5 V ± 10%
ACPL-K34T
Ratio Rin1 : (Rin2+Ro) = 1.5:1
Recommended Ro+Rin1+Rin2 = 350 Ω
Figure 17. Recommended non-inverting drive circuit
VDD1 = 5 V ± 10%
Ratio Rin1 : (Rin2+Ro) = 1.5:1
Recommended Ro+Rin1+Rin2 = 350 Ω
ACPL-K34T
Figure 18. Recommended inverting drive circuit
VDD1
0.1 µF
AN
ISOLATION
Rin CA
VCC
VOUT
10 µF
VEE
VDD1
0.1 µF
AN
ISOLATION
Rin CA
ACPL-K34T
Figure 19(a)
Figure 19(b)
Figure 19(a) and Figure 19(b). Not recommended – Open drain/open collector drive circuit
ACPL-K34T
VCC
VOUT
10 µF
VEE
VDD1
0.1 µF
Rin1 AN
M1
ISOLATION
Rin2 CA
VCC
VOUT
10 µF
VEE
VDD1
0.1 µF
Rin1 AN
Q1
ISOLATION
Rin2 CA
ACPL-K34T
VDD1 = 5 V ± 10%
Ratio Rin1 : Rin2 = 1.5:1
Recommended Rin1+Rin2 = 350 Ω
ACPL-K34T
VDD1 = 5 V ± 10%
Ratio Rin1 : Rin2 = 1.5:1
Recommended Rin1+Rin2 = 350 Ω
Figure 20(a)
Figure 20(b)
Figure 20(a) and Figure 20(b). Alternative LED drive circuits to replace Figure 19(a) and 19(b)
VCC
VOUT
10 µF
VEE
11
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