参数资料
型号: HCPL-5150-300
英文描述: 0.5 Amp Output Current IGBT Gate Drive Optocoupler
中文描述: 0.5安培输出电流IGBT栅极驱动光电耦合器
文件页数: 5/16页
文件大小: 193K
代理商: HCPL-5150-300
13
Figure 27. Energy Dissipated in the HCPL-5150
for Each IGBT Switching Cycle
LED Drive Circuit Considerations for
Ultra High CMR Performance.
Without a detector shield, the
dominant cause of optocoupler
CMR failure is capacitive
coupling from the input side of
the optocoupler, through the
package, to the detector IC as
shown in Figure 28.
The HCPL- 5150 improves CMR
performance by using a detector
IC with an optically transparent
Faraday shield, which diverts
the capacitively coupled current
away from the sensitive IC
circuitry. However, this shield
does not eliminate the
capacitive coupling between the
LED and optocoupler pins 5- 8
as shown in Figure 29. This
capacitive coupling causes
perturbations in the LED
current during common mode
transients and becomes the
major source of CMR failures
for a shielded optocoupler. The
main design objective of a high
CMR LED drive circuit becomes
keeping the LED in the proper
state (on or off) during common
mode transients. For example,
the recommended application
circuit, (Figure 25) can achieve
10 kV/
s CMR while minimizing
component complexity.
Techniques to keep the LED in
the proper state are discussed
in the next two sections.
Figure 28. Optocoupler Input to Output Capaci-
tance Model for Unshielded Optocouplers
Figure 29. Optocoupler Input to Output Capaci-
tance Model for Shielded Optocouplers
Figure 26. Typical Application Circuit with Negative IGBT Gate Drive
+ HVDC
3-PHASE
AC
- HVDC
0.1 F
V CC = 15 V
1
3
+
2
4
8
6
7
5
Rg
Q1
Q2
V EE = -5 V
+
270
+5 V
CONTROL
INPUT
74XXX
OPEN
COLLECTOR
_
PE Parameter Description
IF
LED Current
VF
LED On Voltage
Duty Cycle
Maximum LED
Duty Cycle
PO Parameter Description
ICC
Supply Current
VCC
Positive Supply
Voltage
VEE
Negative Supply
Voltage
ESW (Rg, Qg)
Energy Dissipation in
the HCPL-5150 for
each IGBT Switching
Cycle (See Figure 27)
f
Switching Frequency
Esw
-
ENERGY
PER
SWITCHING
CYCLE
-
J
0
Rg - GATE RESISTANCE -
100
3
20
7
40
2
60
80
6
Qg = 100 nC
Qg = 250 nC
Qg = 500 nC
5
4
1
VCC = 19 V
VEE = -9 V
1
3
2
4
8
6
7
5
CLEDP
CLEDN
1
3
2
4
8
6
7
5
CLEDP
CLEDN
SHIELD
CLEDO1
CLEDO2
相关PDF资料
PDF描述
HCPL-5151 0.5 Amp Output Current IGBT Gate Drive Optocoupler
HCPL-523K#300 2 CHANNEL LOGIC OUTPUT OPTOCOUPLER, 5 Mbps
HCPL-7721#500 1 CHANNEL LOGIC OUTPUT OPTOCOUPLER, 25 Mbps
HCPL0661R2 2 CHANNEL LOGIC OUTPUT OPTOCOUPLER, 10 Mbps
HD10181F 10K SERIES, 4-BIT ARITHMETIC LOGIC UNIT, CQFP24
相关代理商/技术参数
参数描述
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HCPL-5151#100 制造商:Avago Technologies 功能描述:OPTOCOUPL LOGIC-OUT PUSH-PULL DC-IN 1CH 8PDIP SMD - Bulk
HCPL-5151#200 制造商:Avago Technologies 功能描述:OPTOCOUPL LOGIC-OUT PUSH-PULL DC-IN 1CH 8PDIP - Bulk
HCPL-5151#300 制造商:Avago Technologies 功能描述:OPTOCOUPL LOGIC-OUT PUSH-PULL DC-IN 1CH 8PDIP SMD - Bulk
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