參數(shù)資料
型號(hào)： HCPL-788J
元件分類： 運(yùn)動(dòng)控制電子
英文描述： Isolation Amplifier with Short Circuit and Overload Detection(具有短路和過(guò)載保護(hù)功能的隔離放大器)
中文描述： 隔離放大器短路和過(guò)載檢測(cè)（具有短路和過(guò)載保護(hù)功能的隔離放大器）
文件頁(yè)數(shù)： 13/20頁(yè)
文件大?。?/td> 277K
代理商： HCPL-788J
13
Analog Interfacing
Power Supplies and Bypassing
The recommended supply con-
nections are shown in Figure 26.
A floating power supply (which in
many applications could be the
same supply that is used to drive
the high-side power transistor) is
regulated to 5 V using a simple
zener diode (D1); the value of
resistor R4 should be chosen to
supply sufficient current from
Figure 25. Recommended Applications Circuit.
Figure 26. Recommended Supply and Sense Resistor Connections.
the existing floating supply. The
voltage from the current sensing
resistor (Rsense) is applied to the
input of the HCPL-788J through
an RC anti-aliasing filter (R2 and
C2). Although the application
circuit is relatively simple, a
few recommendations should
be followed to ensure optimal
performance.
The power supply for the
HCPL-788J is most often obtained
from the same supply used to
power the power transistor gate
drive circuit. If a dedicated
supply is required, in many cases
it is possible to add an additional
winding on an existing trans-
former. Otherwise, some sort of
simple isolated supply can be
used, such as a line powered
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
GND
2
V
DD2
FAULT
ABSVAL
V
OUT
V
REF
V
DD2
GND
2
V
IN+
V
IN-
C
H
C
L
V
DD1
V
LED1+
V
DD1
GND
1
R
SHUNT
0.02
ISOLATED +5 V
R3 4.7 k
R2
39
.01 μF
C3
0.1 μF
C1
0.1 μF
HCPL-788J
INPUT
CURRENT
+5 V
A/D
V
REF
GND
μC
TO OTHER
PHASE OUTPUTS
+
R1
C2
C6
0.1 μF
C4
C8
C7
C5
C5 = C7 = C8 = 470 pF
C4 = 0.1 μF
16
15
14
13
12
11
10
9
5
1
2
8
7
3
4
6
GND
2
V
DD2
FAULT
ABSVAL
V
OUT
V
REF
V
DD2
GND
2
V
DD1
V
IN+
V
IN-
GND
1
V
DD1
C
H
C
L
V
LED+
R2
39
+
R4
C1
0.1 μF
C2
0.01 μF
FLOATING
POWER
SUPPLY
HV+
+
–
+
R1
R
SENSE
HV-
MOTOR
D1
5.1 V
GATE DRIVE
CIRCUIT
HCPL-788J
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HCPL-788J#500 功能描述:隔離放大器 4.5 - 5.5 SV RoHS:否 制造商:Texas Instruments 輸入補(bǔ)償電壓:1.5 mV 共模抑制比（最小值）:95 dB 帶寬:60 KHz 工作電源電壓:3.3 V 電源電流:8 mA 工作溫度范圍:- 40 C to + 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOP-8 封裝:Tube
HCPL-788J/EVAL 制造商:Avago Technologies 功能描述:
HCPL-788J-000E 功能描述:隔離放大器 4.5 - 5.5 SV RoHS:否 制造商:Texas Instruments 輸入補(bǔ)償電壓:1.5 mV 共模抑制比（最小值）:95 dB 帶寬:60 KHz 工作電源電壓:3.3 V 電源電流:8 mA 工作溫度范圍:- 40 C to + 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOP-8 封裝:Tube
HCPL-788J-500E 功能描述:隔離放大器 4.5 - 5.5 SV RoHS:否 制造商:Texas Instruments 輸入補(bǔ)償電壓:1.5 mV 共模抑制比（最小值）:95 dB 帶寬:60 KHz 工作電源電壓:3.3 V 電源電流:8 mA 工作溫度范圍:- 40 C to + 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOP-8 封裝:Tube
HCPL-800J 功能描述:緩沖器和線路驅(qū)動(dòng)器 PLC Powerline DAA IC RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel
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