Signal conditioning modules
TFWxxxN Series
2019.01.21-A/2 Page 1 of 4
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Active high precision output signal conditioning module
RoHS
FEATURES
Two-port isolation (signal input to signal output)
High linearity of 0.1% Full Scale
Isolation test voltage 2kVAC (60s)
Low ripple & noise ≤30mVpp (20MHz)
Compact DIP18 size measures 26 x 9.5 x 12.5mm
ESD protection to IEC/EN61000-4-2, Contact ±4kV
with performance Criteria B
EN60950 approval
The TFWxxxN series signal conditioning modules (also called isolated transmitter), are transforming the incoming digital PWM signal on the
input directly into representative isolated analog voltage and current signals at the output. The adopted electromagnetic isolation
technology has a much higher accuracy and a lower temperature drift in comparison with photo/opto-coupler isolators. This module has a
two-port isolation (input and output). The series with external functions for zeros and full adjustment via potentiometers (Offset/Gain) offers a
convenient way for design and adjustment to our customers.
Selection Guide
Certification
Model
Input Signal(%)
Output Signal
Isolated Power Output
(VDC)
CE
TFW260N
0-100
0-20mA
None
TFW560N
0-100
0-10V
None
TFW660N
0-100
0-5V
None
Input Specifications
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Power Input
Input Voltage
Typ.-5%
Typ.
Typ.+5%
V
Input Power
--
--
1.0
W
Power Supply Protection
None
Signal Input
Frequency
Operating temperature range from
-40℃~ +85℃, ViH-ViL=3.3V
100
--
1000
Hz
Duty Cycle
Operating temperature range from
-40℃~ +85℃, ViH-ViL=3.3V
0
--
100%
--
Edge Time
500Hz；Ta=25℃；
--
--
100
nS
PWM Amplitude
ViH-ViL
3
--
5
V
Output Specifications
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Signal Output
Output Signal
See selection guide
Load Capacity
Current output
--
--
500
Ω
Voltage output
2
--
--
kΩ
Ripple & Noise
20MHz bandwidth
--
30
--
mVpp
Transmission Specifications
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Signal Precision
Ta=25℃
-0.1%FS
--
+0.1%FS
--
Temperature Coefficient
Operating temperature range from
-40℃~ +85℃
--
50
100
PPM/℃
Response Time
--
500
1000
ms
Signal conditioning modules
TFWxxxN Series
2019.01.21-A/2 Page 2 of 4
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
General Specifications
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Electric Isolation
Isolated between signal input/power supply and signal
output.
Isolation Test
Electric strength test for 1 minute with
a leakage current <1mA, humidity
<70%
2
--
--
kVAC
Insulation Resistance
At 500VDC
100
--
--
MΩ
Operating Temperature
-40
--
+85
℃
Transportation and Storag Temperature
-40
--
+85
℃
Safety Standard
EN60950
Safety Certification
EN60950
Safety Class
CLASS III
Application Environment
The presence of dust, severe vibration, shock and
corrosive gas may cause damage to the product
Electromagnetic Compatibility (EMC)
Immunity
ESD
IEC/EN61000-4-2
Contact ±4kV
perf. Criteria B
EFT
IEC/EN61000-4-4
Signal output port ±1kV
(see Fig. 3 for recommended circuit)
perf. Criteria B
Surge
IEC/EN61000-4-5
Signal output port ±1kV (line to ground)
(see Fig. 3 for recommended circuit)
perf. Criteria B
Application Precautions
1. Carefully read and follow the instructions before use; contact our technical support if you have any question;
2. Do not use the product in hazardous areas;
3. Use only DC power supply source for this product. 220VAC power supply is prohibited;
4. It is strictly forbidden to disassemble the product privately in order to avoid product failure or malfunction;
After-sales service
1. Factory inspection and quality control are strictly enforced before shipping any product; please contact your local representative or
our technical support if you experience any abnormal operation or possible failure of the module;
2. The products have a 3-year warranty period, from the date of shipment. The product will be repaired or exchanged free of charge
within the warranty period for any quality problem that occurs under normal use.
Applied circuit
Please refer to Isolated Transmitter application notes.
Design Reference
1. Typical application
1) Schematic diagram
Fig. 1
Mechanical Specifications
Case Material
Black plastic, flame-retardant heat- resistant
Package
DIP18
Weight
5.5g(Typ.)
Cooling Method
Free air convection
Signal conditioning modules
TFWxxxN Series
2019.01.21-A/2 Page 3 of 4
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
2) Typical application circuit
Fig. 2 Schematic diagram of TFW_N application
Functional Description
In figure 2, Sin is a digital control signal provided by the MCU control circuit. The TFW-N module realizes the conversion of this input into an
isolated output signal at the Sout terminals. The Pin terminals are the input ports for the module’s power supply.
How it Works
The MCU circuit’s output is a PWM signal feeding into Sin terminals. The PWM signal is subsequently converted by the TFW-N module into
an analog signal that is isolated from the input and ready for the back end load RL. The whole process results in a converted and isolated
analog outputs signal of the MCU’s digital signal input. The power supply to the TFW_N module is provided by the MCU control circuit.
2. EMC compliance recommended circuit
Fig. 3
Component
Recommended part, value
D1
SMBJ15A
3.For additional information please find the application notes on www.mornsun-power.com
Signal conditioning modules
TFWxxxN Series
2019.01.21-A/2 Page 4 of 4
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
Dimensions and Recommended Layout
Notes:
1. For additional information on Product Packaging please refer to www.mornsun-power.com. The Packaging bag number: 58240002;
2. Unless otherwise specified, parameters in this datasheet were measured under the conditions of Ta=25℃, humidity<75%RH with nominal
input voltage and rated output load;
3. All index testing methods in this datasheet are based on company corporate standards;
4. The above are the performance indicators of the product models listed in this datasheet. Some indicators of non-standard models will
exceed the above requirements. For details, please contact our technical staff;
5. We can provide product customization service;
6. Products are related to laws and regulations: see "Features" and "EMC";
7. Our products shall be classified according to ISO14001 and related environmental laws and regulations, and shall be handled by
qualified units.
MORNSUN Guangzhou Science & Technology Co., Ltd.
Address: No. 5, Kehui St. 1, Kehui Development Center, Science Ave., Guangzhou Science City, Luogang District, Guangzhou, P. R. China
Tel: 86-20-38601850-8801 Fax: 86-20-38601272 E-mail: info@mornsun.cn