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參數(shù)資料
| 型號： | HCPL-7560-060 |
| 英文描述： | Optically Isolated Sigma-Delta Modulator |
| 中文描述： | 光隔離Σ-Δ調(diào)制器 |
| 文件頁數(shù)： | 14/18頁 |
| 文件大?。?/td> | 153K |
| 代理商： | HCPL-7560-060 |
14
Power Supplies and Bypassing
The recommended application
circuit is shown in Figure 17.
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 R1 should be chosen
to supply sufficient current
from the existing floating
supply. The voltage from the
current sensing resistor or
shunt (Rsense) is applied to
the input of the HCPL-7560
(U2) through an RC anti-
aliasing filter (R2 and C2).
And finally, the output clock
and data of the isolated
modulator are connected to
the digital interface IC.
Although the application
circuit is relatively simple, a
few recommendations should
be followed to ensure optimal
performance.
The power supply for the
isolated modulator 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
transformer. Otherwise, some
sort of simple isolated supply
can be used, such as a line
powered transformer or a
high-frequency DC-DC
converter.
An inexpensive 78L05 three-
terminal regulator can also be
used to reduce the floating
supply voltage to 5 V. To help
attenuate high-frequency
power supply noise or ripple,
a resistor or inductor can be
used in series with the input
of the regulator to form a low-
pass filter with the regulator’s
input bypass capacitor.
Figure 17. Recommended Application Circuit.
As shown in Figure 17, 0.1
μ
F
bypass capacitors (C1 and C3)
should be located as close as
possible to the input and
output power-supply pins of
the isolated modulator (U2).
The bypass capacitors are
required because of the high-
speed digital nature of the
signals inside the isolated
modulator. A 0.01
μ
F bypass
capacitor (C2) is also
recommended at the input due
to the switched-capacitor
nature of the input circuit. The
input bypass capacitor also
forms part of the anti-aliasing
filter, which is recommended
to prevent high-frequency
noise from aliasing down to
lower frequencies and
interfering with the input
signal.
+
-
MOTOR
HV-
HV+
RSENSE
FLOATING
POSITIVE
SUPPLY
GATE DRIVE
CIRCUIT
V
DD1
V
IN+
V
IN-
GND1
V
DD2
MCLK
MDAT
GND2
CDAT
MCLK1
MDAT1
MCLK2
MDAT2
GND
SCLK
SDAT
CCLK
CLAT
V
DD
CHAN
CS
THR1
OVR1
RESET
+ 5 V
HCPL-7560
TO
CONTROL
CIRCUIT
C3
0.1 μF
C1
0.1 μF
C2
0.01 μF
R2 39
R1
D1
5.1 V
HCPL-0872
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HCPL-7560-060E | Optically Isolated Sigma-Delta Modulator |
| HCPL-7560-300 | Optically Isolated Sigma-Delta Modulator |
| HCPL-7560-300E | Optically Isolated Sigma-Delta Modulator |
| HCPL-7560-500 | Optically Isolated Sigma-Delta Modulator |
| HCPL-7560-500E | Optically Isolated Sigma-Delta Modulator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HCPL-7560-060E | 功能描述:隔離放大器 Isolated Modulator RoHS:否 制造商:Texas Instruments 輸入補償電壓: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-7560-300 | 功能描述:隔離放大器 Isolated Modulator RoHS:否 制造商:Texas Instruments 輸入補償電壓: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-7560-300E | 功能描述:隔離放大器 Isolated Modulator RoHS:否 制造商:Texas Instruments 輸入補償電壓: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-7560-300E | 制造商:Avago Technologies 功能描述:OPTOCOuPLER LEADED PROCESS COMPATIBLE:YE |
| HCPL-7560-360E | 功能描述:隔離放大器 Isolated Modulator RoHS:否 制造商:Texas Instruments 輸入補償電壓: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 |
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