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ACPL-C87A PDF 데이터시트 ( Data , Function )

부품번호 ACPL-C87A 기능
기능 Precision Optically Isolated Voltage Sensor
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ACPL-C87A 데이터시트, 핀배열, 회로
ACPL-C87B, ACPL-C87A, ACPL-C870
Precision Optically Isolated Voltage Sensor
Data Sheet
Lead (Pb) Free
RoHS 6 fully
compliant
RoHS 6 fully compliant options available;
-xxxE denotes a lead-free product
Description
The ACPL-C87B/C87A/C870 voltage sensors are optical
isolation amplifiers designed specifically for voltage
sensing. Its 2 V input range and high 1 Ginput impe-
dance, makes it well suited for isolated voltage sensing
requirements in electronic power converters applications
including motor drives and renewable energy systems.
In a typical voltage sensing implementation, a resistive
voltage divider is used to scale the DC-link voltage to suit
the input range of the voltage sensor. A differential output
voltage that is proportional to the input voltage is created
on the other side of the optical isolation barrier.
For general applications, the ACPL-C87A (±1% gain
tolerance) and the ACPL-C870 (±3% gain tolerance)
are recommended. For high precision requirements,
the ACPL-C87B (±0.5% gain tolerance) can be used. The
ACPL-C87B/C87A/C870 family operates from a single 5 V
supply and provides excellent linearity. An active-high
shutdown pin is available which reduces the IDD1 current
to only 15 A, making them suitable for battery-powered
and other power-sensitive applications.
The high common-mode transient immunity (15 kV/s)
of the ACPL-C87B/C87A/C870 provides the precision and
stability needed to accurately monitor DC-link voltage in
high noise environments. Combined with superior optical
coupling technology, the ACPL-C87B/C87A/C870 imple-
ments sigma-delta (-) modulation, chopper stabilized
amplifiers, and differential outputs to provide unequaled
isolation-mode noise rejection, low offset, high gain
accuracy and stability. This performance is delivered in a
compact, auto-insertable Stretched SO-8 (SSO-8) package
that meets worldwide regulatory safety standards.
Features
 Advanced Sigma-Delta (-) Modulation Technology
 Unity Gain 1V/V, ±0.5% High Gain Accuracy (ACPL-C87B)
 1 GInput Impedence
 0 to 2 V Nominal Input Range
 -35 ppm/°C Low Gain Drift
 21V /°C Offset Voltage Drift
 0.1% Non-Linearity Max
 Active-High Shutdown Pin
 100 kHz Wide Bandwidth
 3 V to 5.5 V Wide Supply Range for Output Side
 -40° C to +105° C Operating Temperature Range
 15 kV/s Common-Mode Transient Immunity
 Compact, Auto-Insertable Stretched SO-8 Package
 Safety and Regulatory Approvals (pending):
– IEC/EN/DIN EN 60747-5-5: 1230 Vpeak working
insulation voltage
– UL 1577: 5000 Vrms/1 min double protection rating
– CSA: Component Acceptance Notice #5
Applications
 Isolated Voltage Sensing in AC and Servo Motor Drives
 Isolated DC-Bus Voltage Sensing in Solar Inverters,
Wind Turbine Inverters
 Isolated Sensor Interfaces
 Signal Isolation in Data Acquisition Systems
 General Purpose Voltage Isolation
CAUTION: It is advised that normal static precautions be taken in handling and assembly
of this component to prevent damage and/or degradation which may be induced by ESD.




ACPL-C87A pdf, 반도체, 판매, 대치품
Table 3. Insulation and Safety Related Specifications
Parameter
Symbol Value
Minimum External Air Gap
(External Clearance)
L(101)
8.0
Minimum External
Tracking (External Creepage)
Minimum Internal Plastic Gap
(Internal Clearance)
L(102)
8.0
0.5
Tracking Resistance
(Comparative Tracking Index)
Isolation Group
CTI
> 175
IIIa
Unit
mm
mm
mm
V
Conditions
Measured from input terminals to output terminals,
shortest distance through air
Measured from input terminals to output terminals,
shortest distance path along body
Through insulation distance, conductor to conductor,
usually the direct distance between the photoemitter
and photodetector inside the optocoupler cavity
DIN IEC 112/VDE 0303 Part 1
Material Group (DIN VDE 0110, 1/89, Table 1)
Table 4. IEC/EN/DIN EN 60747-5-5 Insulation Characteristics [1]
Description
Symbol
Value
Units
Installation classification per DIN VDE 0110/1.89, Table 1
for rated mains voltage ≤ 150 Vrms
for rated mains voltage ≤ 300 Vrms
for rated mains voltage ≤ 450 V rms
for rated mains voltage ≤ 600 Vrms
for rated mains voltage ≤ 1000 Vrms
I-IV
I-IV
I-IV
I-IV
I-III
Climatic Classification
55/105/21
Pollution Degree (DIN VDE 0110/1.89)
2
Maximum Working Insulation Voltage (Pending Qualification)
VIORM
1230
Vpeak
Input to Output Test Voltage, Method b
VIORM x 1.875 = VPR, 100% Production Test with tm = 1 sec, Partial Discharge < 5 pC
VPR
2306
Vpeak
Input to Output Test Voltage, Method a
VIORM x 1.6 = VPR, Type and Sample Test, tm = 10 sec, Partial Discharge < 5 pC
VPR
1968
Vpeak
Highest Allowable Overvoltage (Transient Overvoltage, tini = 60 sec)
VIOTM
8000
Vpeak
Safety-limiting values (Maximum values allowed in the event of a failure)
Case Temperature
Input Current [2]
Output Power [2]
TS
IS,INPUT
PS,OUTPUT
175
230
600
°C
mA
mW
Insulation Resistance at TS, VIO = 500 V
RS
≥ 109
Notes:
1. Insulation characteristics are guaranteed only within the safety maximum ratings, which must be ensured by protective circuits within the
application.
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ACPL-C87A 전자부품, 판매, 대치품
Table 7. Electrical Specifications (continued)
Unless otherwise noted, TA = -40° C to +105° C, VDD1 = 4.5 V to 5.5 V, VDD2 = 3.3 V to 5.5 V, VIN = 0 – 2 V, and VSD = 0 V.
Parameter
Symbol Min.
Typ.[1]
Max. Unit Test Conditions/Notes
Fig.
AC CHARACTERISTICS
Vout Noise
Nout
0.013
mVrms Vin = 0 V;
12
Output low-pass filtered
to 180 KHz. Note 3.
Small-Signal Bandwidth (-3 dB)
f–3 dB
70
100
kHz Guaranteed by design
Input to Output
Propagation Delay
50%-10%
50%-50%
tPD10
tPD50
2.2
3.0 s
Step input.
3.7
5.5 s
Step input.
18
18
50%-90% tPD90
5.3
6.5 s
Step input.
18
Output Rise/Fall Time (10%-90%)
Shutdown Delay
tR/F
tSD
2.7
4.0 s
Step input (tPD90 - tPD10)
25
40 s
Vin = 2 V
17
Enable Delay
Common Mode Transient Immunity
tON
CMTI
10
150 200 s
15 kV/s VCM = 1 kV, TA = 25° C
Power Supply Rejection
PSR
-78 dB 1 Vpp 1 kHz sine wave
ripple on VDD1,
differential output
POWER SUPPLIES
Input Side Supply Current
IDD1
10.5
15 mA
VSD = 0 V
15 A VSD = 5 V
IDD2 6.5 12 mA 5 V supply
6.1 11 mA 3.3 V supply
Notes:
1. All Typical values are under Typical Operating Conditions at TA = 25° C, VDD1 = 5 V, VDD2 = 5 V.
2. Gain is defined as the slope of the best-fit line of differential output voltage (VOUT+ – VOUT-) versus input voltage over the nominal range, with offset
error adjusted.
3. Noise is measured at the output of the differential to single ended post amplifier.
4. When is VSD = 5 V or when shutdown is enabled, Vout+ is close to 0V and Vout- is at close to 2.46 V. This is similar to when VDD1 is not supplied.
Table 8. Package Characteristics
Parameter
Symbol Min Typ Max Units Test Conditions
Note
Input-Output Momentary
Withstand Voltage
Resistance (Input-Output)
VISO 5000
RI-O > 1012
Vrms
RH < 50%, t = 1 min.,
TA = 25° C
VI-O = 500 VDC
1, 2
3
Capacitance (Input-Output)
CI-O
0.5
pF f = 1 MHz
3
Notes:
1. In accordance with UL 1577, each optocoupler is proof tested by applying an insulation test voltage ≥ 6000 Vrms for 1 second (leakage detection
current limit, II-O ≤ 5 mA). This test is performed before the 100% production test for partial discharge (method b) shown in IEC/EN/DIN EN 60747-
5-5 Insulation Characteristic Table.
2. The Input-Output Momentary Withstand Voltage is a dielectric voltage rating that should not be interpreted as an input-output continuous
voltage rating. For the continuous voltage rating, refer to the IEC/EN/DIN EN 60747-5-5 insulation characteristics table and your equipment level
safety specification.
3. This is a two-terminal measurement: pins 1–4 are shorted together and pins 5–8 are shorted together.
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