CN100A11024/CO2 [TDK]
DC/DC CONVERTER 24V 101W;
| 型号： | CN100A11024/CO2 |
| 厂家： | 
TDK ELECTRONICS |
| 描述： | DC/DC CONVERTER 24V 101W |
| 文件： | 总16页 (文件大小：812K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TDK-Lambda
CN-A110 Series
Instruction Manual
CN-A110 SERIES
Instruction Manual
BEFORE USING THE POWER SUPPLY UNIT
Be sure to read this instruction manual thoroughly before using this product. Pay attention to all cautions and warnings before using this product. Incorrect
usage could lead to an electrical shock, damage to the unit or a fire hazard.
DANGER
· Never use this product in locations where flammable gas or ignitable substances are present.
WARNING
· Do not touch this product or its internal components while it is in operation, or within 5 seconds of shut down. There may be high voltage or high temperature
present and you may receive an electric shock or burn.
· When the product is operating, keep your hands and face away from it as you may be injured by flying debris in the event of a fault.
· Do not make unauthorized changes to this product, otherwise you may receive an electric shock and void your warranty.
· Do not use this product in the event of the emission of smoke or abnormal smell and sound etc. It might lead to fire and/or electric shock. In such cases, please
contact us. Do not attempt repair by yourself, as it is dangerous for the user.
· Do not operate these products in the presence of condensation. It might lead to fire and/or electric shock.
·
Do not drop or insert anything into the product. It might lead to a failure, fire and/or electric shock.
CAUTION
· This power supply is designed for use within an end product such that it is accessible to SERVICE ENGINEERS only.
· Confirm connections to input/output terminals and signal terminals are correct as indicated in the instruction manual before switching on.
· Input voltage, Output current, Output power, ambient temperature and ambient humidity should be kept within specifications, otherwise the product will be
damaged.
· Do not operate and store this product in an environment where condensation might occur. In such case, waterproof treatment is necessary.
· Do not use this product in environment with a strong electromagnetic field, corrosive gas or conductive substances.
· For applications which require very high reliability (Nuclear related equipment, traffic control equipment, etc.), it is necessary to provide a fail safe
mechanism in the end equipment.
· The information in this document is subject to change without prior notice. Please refer to the latest version of the data sheet, etc., for the most up-to date
specifications of the product.
· No part of this document may be copied or reproduced in any form without prior written consent of TDK-Lambda.
· Do not inject abnormal voltages into the output or signal of this product. The injection of reverse voltage or over voltage exceeding nominal output voltage
into the output or signal terminals might cause damage to internal components.
· Operation of this product under over-current or short circuit conditions can result in damage. Failures of the product under these conditions have been
assessed and are considered to be safe within the meaning of IEC/EN/UL/CSA 60950-1.
· This product contains a printed circuit board utilizing surface mounted devices. PCB stress such as bending, twisting etc could cause damage. Therefore,
please handle with care.
· In order to maintain SELV output, the baseplate must be protectively earthed in the end application. Where the baseplate is not earthed, the output must be
considered hazardous and must not be made user accessible"
· The output of this product may, under fault conditions, exceed SELV voltage limits. Therefore the output must be earthed in the end equipment to maintain
SELV. If the output is not earthed, they must be considered hazardous and must not be made user accessible.
· These products have been assessed for use with non-isolated mains derived DC where the mains source is up to 115VAC. For mains derived DC above this
source voltage, there must be isolation equivalent to reinforced insulation at the rated mains source voltage.
· The application circuits and their parameters are for reference only. Be sure to verify effectiveness of these circuits and their parameters before finalizing the
circuit design.
·
Use an HBC external fuse to each module to ensure safe operation and compliance with the Safety Standards to which it is approved.
Note : CE MARKING
CE Marking, when applied to a product covered by this handbook, indicates compliance with the low voltage directive.
C256-04-11G
TDK-Lambda
CN-A110 Series
Instruction Manual
Table of Contents
■Block Diagram
■Sequence Time Chart
■Terminal Explanation
■Explanations on Specifications
1.
Input Voltage Range
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
Output Voltage Adjustment Range (TRM terminal)
Maximum Output Ripple and Noise
Maximum Line Regulation
Maximum Load Regulation
Baseplate Temperature vs. Output Voltage Drift
Over Current Protection (OCP)
Over Voltage Protection (OVP)
Over Temperature Protection (OTP)
Remote Sensing (+S, -S terminal)
ON/OFF Control (CNT terminal)
Parallel Operation (PC terminal)
Series Operation
Operating Ambient Temperature
Operating Ambient Humidity
Storage Ambient Temperature
Storage Ambient Humidity
Cooling Method
Withstand Voltage
Insulation Resistance
Vibration
Shock
■Installation
1.
2.
3.
4.
5.
Mounting Method
Heatsink Installation Method
Regarding Vibration
Recommended Soldering Condition
Recommended Cleaning Condition
■Before concluding power module damage
- 1 -
TDK-Lambda
CN-A110 Series
Instruction Manual
■Block Diagram
+Vin
+V
-V
-Vin
※：5V Model only
ON/OFF
※：5V Model only
CNT
TRM
+S
-S
PC
※：CN200A110-12,15,24 Model only
: 400kHz
● Switching frequency (fixed) :
: 300kHz CN200A110-5 Model only
:
■Sequence Time Chart
- 2 -
TDK-Lambda
CN-A110 Series
Instruction Manual
■Terminal Explanation
-V
-S
-Vin
CNT
+Vin
TRM
+S
Name Plate
+V
(a) CN30,50,100A
[Input Side Terminals]
[Output Side Terminals]
-Vin : -Input Terminal
-V
-S
: -Output Terminal
: -Remote Sensing Terminal
CNT : ON/OFF Control Terminal
+Vin : +Input Terminal
TRM : Output Voltage Trimming Terminal
+S
: +Remote Sensing Terminal
: +Output Terminal
+V
-Vin
-V
PC/NC
-S
TRM
+S
Name Plate
CNT
+Vin
+V
(b) CN200A
[Input Side Terminals]
[Output Side Terminals]
-Vin : -Input Terminal
-V
-S
: -Output Terminal
PC/NC :Output Current Balance Terminal
(PC Terminal : 12,15,24V Models)
No Connection Terminal
: -Remote Sensing Terminal
TRM : Output Voltage Trimming Terminal
+S : +Remote Sensing Terminal
+V : +Output Terminal
(NC Terminal : 5V Model)
CNT : ON/OFF Control Terminal
+Vin : +Input Terminal
Baseplate can be connected to FG (frame ground) M3 threaded holes.
Connect +Vin, -Vin, +V, -V with consideration of contacting resistance.
- 3 -
TDK-Lambda
CN-A110 Series
Instruction Manual
■Explanations on Specifications
Also, use fast-blow type or nomal-blow type for every module.
Furthermore, fuse must be connected to the +Vin side if –Vin
side is used as ground, or fuse must be connected to –Vin side
if +Vin side is used as a ground.
1. Input Voltage Range
Input voltage range for CN-A110 Series is indicated below.
Input Voltage Range : 60 - 160VDC
Input Fuse Recommended Current Rating:
CN100A110 : DC400V and above , 5A
CN30,50A110 : DC400V and above , 4A
CN200A110 : DC400V and above , 10A
Basically，ripple voltage (Vrpl) which results from rectification
and filtering of commercial AC line is included within the input
voltage as shown in Fig. 1-1. Ripple voltage must be limited within
the voltage described below.
C1 :
Allowable Input Ripple Voltage : 10Vp-p
To prevent the effect of input line inductance to the power
module, connect electrolytic capacitor between +Vin and –Vin
terminals.
Furthermore, use electrolytic capacitor with small ESR value.
Especially take note that during line turn off at low ambient
temperature, power module output will not normally shut down.
When this value is exceeded, the output ripple voltage
becomes large.
Note that sudden input voltage change may cause variation of
output voltage transitionally.
Also, input voltage waveform peak value must not exceed
above input voltage range.
CN30,50,100A
Recommended Capacitor Value : 47μF and above
(Voltage Rating 200V and above)
CN200A
Recommended Capacitor Value : 100μF and above
(Voltage Rating 200V and above)
Notes
Vrpl
below
10V
1.
Use low impedance electrolytic capacitor with excellent
temperature characteristics.
CN30,50,100A
(Nippon Chemi-con KMQ, KXJ Series or equivalent)
CN200A
Time
(Nippon Chemi-con KXJ Series or equivalent)
Fig.1-1 Input Ripple Voltage
2.
When using at –20 ℃ ambient temperature,
connect capacitors as below to reduce equivalent
series resistance.
Basic Connection
Fuse
CN30,50,100A
Use two capacitors (100μF,100V) in series.
CN200A
+Vin
+
-
+V
+S
TRM
-S
C2 C3
CNT
C1
Load
PC/NC*
CN-A110
Use two series capacitors (120μF,100V) in two parallel.
-V
-Vin
(Nippon Chemi-con LXV Series or Nichicon PM Series or
equivalent)
*
PC/NC terminal: Only CN200A
Baseplate
Fig.1-2 Basic Connection
3.
When input line inductance becomes excessively high
due to insertion of choke coil, operation of the power
module could become unstable. For this case, increase C1
value more than the value indicated above.
Input Fuse
This power module has no built-in fuse. Use external fuse to
acquire various Safety Standards and to improve safety.
- 4 -
TDK-Lambda
CN-A110 Series
Instruction Manual
4.
Take note of the maximum allowable ripple current of
the electrolytic capacitor used.
Especially, for sudden load current changes, verify
actual ripple current and make sure that maximum
allowable ripple current is not exceeded.
Reverse Input Connection
Reverse input polarity would cause module damage. For cases
where reverse connections are possible, connect a protective diode
and fuse. Use protective diode with higher voltage rating than the
input voltage, and with higher surge current rating than the fuse.
C2 : 2.2μF
Fuse
To reduce spike noise voltage at the output, connect 2.2μF
ceramic capacitor between +V and –V at 50mm distance from
the output terminals.
Also, take note that output spike noise voltage could vary
according to PCB wiring design.
+Vin
Protective
C1
Diode
-Vin
C3：
For stable operation, connect a electrolytic capacitor
between +V and –V at 50mm distance from the output
terminals.
Fig.1-3 Protection for Reversed Connection of Input
Take note that output ripple could be affected by electrolytic
capacitor, equivalent impedance and inductance characteristics
of wiring.
For cases of abrupt changes in load current or input voltage,
increasing capacitance value of the external capacitors could
reduce the voltage fluctuation.
2. Output Voltage Adjustment Range
(TRM terminal)
Output voltage could be adjusted within the range described
below by external resister and variable resistor or applying
external voltage.
However, take note that OVP or LVP(5V Model only) might
trigger when output voltage adjustment exceeds the ranges
indicated below.
CN30,50,100A
10V , 1000μF
25V , 470μF
25V , 470μF
50V , 220μF
CN200A
5V
10V , 2200μF
25V , 1000μF
25V , 1000μF
50V , 470μF
Output Voltage Adjustment Range
12V
15V
24V
5V :
–10% - +20% of Nominal Output Voltage
Table1-1 C3 Recommended Values of External
Output Capacitor
12V,15V,24V:
–10% - +10% of Nominal Output Voltage
Maximum capacitance (electrolytic capacitor) that can be
connected between +V and –V, is shown below.
When increasing the output voltage, reduce the output current
accordingly so as not to exceed the maximum output power.
Take note that the output current when output voltage is
decreased is maximum output current of specification.
Remote sensing is possible even when output voltage is
varied. For details on remote sensing function, please refer to
“10.Remote Sensing”.
Maximum capacitance of output capacitor
ALL MODELS : 10,000μF
Notes
1.
2.
3.
Use low impedance electrolytic capacitor with excellent
temperature characteristics.
(Nippon Chemi-con LXZ, LXY Series or equivalent)
Use more than two recommended capacitor above in
parallel when ambient temperature becomes lower than
–20℃ to reduce ESR.
Take note of the allowable ripple current of the
capacitor to be used. Especially, when load adding
capacitors for abrupt current changes, be sure to verify
that ripple current does not exceed allowable ripple
current before use.
- 5 -
TDK-Lambda
CN-A110 Series
Instruction Manual
Output Voltage Adjustment by External Resistor or
by Variable Resistor
(1) In case of adjusting output voltage lower
(1-1) Allowable maximum output current = maximum output
current of specification.
(2) In case of adjusting output voltage higher
(2-1) Allowable maximum output current = maximum output
power ÷ output voltage. (reduce maximum output
current specification .)
(1-2) Connect an external resistor Radj(down) between the
TRM terminal and –S terminal.
(2-2) Connect an external resistor Radj(up) between TRM
terminal and +S terminal.
+V
+S
＋
Load
-
+V
+S
+
CN-A110
TRM
TRM
Load
-
Radj(up)
CN-A110
Radj(down)
-S
-S
-V
-V
Fig.2-1 Connection for Output Voltage Trim Down
Fig.2-3 Connection for Output Voltage Trim Up
(1-3) Equation of external resistor and output voltage
(2-3) Equation of external resistor and output voltage
æ
ö
100(%)
æ
ö
Vo(100(%)+ D(%)) 100(%)
ç
ç
÷
Radj(down) =
- 2 [kW]
ç
ç
÷
Radj(up) =
-
- 2 [kW]
÷
ø
÷
ø
D(%)
1.225´D(%)
D(%)
è
è
Radj(down)
Δ(%)
: External adjustment resistor
Vo
: Nominal output voltage
Radj(up) : External adjustment resistor
Δ (%)
: Output voltage change rate against
nominal output voltage
: Output voltage change rate against
nominal output voltage
ex) When setting 5V Model to 4.5V output,
Δ(%) should be set at 10%.
Below graph is relation Δ(%) and value of external
resistor.
ex) When setting 5V Model to 5.5V output,
Δ(%) should be set at 10%.
Below graph is relation Δ(%) and value of external
resistor.
1000
10000
100
10
1000
24V
15V
12V
100
5V
1
10
6
0
2
4
8
10
10
20
0
5
15
Change rate against nominal Output Voltage[%]
Change rate against nominal Output Voltage[%]
Fig.2-2 Δ(%) vs. Radj(down)
Fig.2-4 Δ(%) vs. Radj(up)
- 6 -
TDK-Lambda
CN-A110 Series
Instruction Manual
(3) To adjust output voltage for whole range
Resister values, as well as, connecting methods for external
resistor (R1) and external variable resistor(VR) are described
below.
3. Maximum Output Ripple and Noise
Measured value according to the specified methods based on
JEITA-9141 (Clause 7.12 and clause 7.13) which is described
in the following.
Connect according to fig.3-1 and measure. Connect
capacitors (C2 : ceramic capacitor , C3 : electrolytic capacitor)
at 50mm distance from the output terminals. Measure at
ceramic capacitor (C2) terminals as shown in fig. 3-1 using
coaxial cable with JEITA attachment. Use oscilloscope with
100MHz frequency bandwidth or equivalent.
5V 12V 15V 24V
R1 5.6k 5.6k 5.6k 5.6k
VR
2k
5k
5k
10k
unit:[Ω]
External resistor
：±5% Tolerance
External variable resistor：±20% Tolerance
+V
+S
+
As short as
possible
with end resistance below 1%
Load
C2
C3
CN - A110
Table 2-1 Values of External Resistor and Variable Resistor
Vo : –10% - +20%(5V)
-S
-V
-
100MHz
Bandwidth
Vo : –10% - +10%(12V,15V,24V)
50mm
1.5m 50Ω
Coaxial cable
Oscilloscope
R
C
VR
JEITA Attachment
R:50Ω
C:4700pF
+S
Fig.3-1 Measurement of Maximum
+V
+
Output Ripple and Noise
C2
R1
C3
Load
-
Take note that output ripple voltage and output spike noise
may vary depending on PCB wiring design.
Generally, increasing capacitance value of external capacitor
can reduce output ripple voltage and output spike noise.
CN -A110
-V
-S
TRM
4. Maximum Line Regulation
Maximum value of output voltage change when input voltage
is gradually varied (steady state) within specified input voltage
range.
Fig.2-5 Example of Connecting External Resistor
For applications other than the above, refer to the TRM
circuit as shown in fig.2-6 and determine external circuit and
components values.
5. Maximum Load Regulation
Maximum value of output voltage change when output
current is gradually varied (steady state) within specified
output current range.
OP amp at Voltage monitor
When using at dynamic load mode, audible noise could be
heard from the power module and output voltage fluctuation
might increase. A thorough pre-evaluation must be performed
before using this power module.
+S
TRM
1kΩ
1kΩ
1.225V
Reference
Voltage
1kΩ
6. Baseplate Temperature vs. Output
Voltage Drift
Output voltage drift is defined as the rate of voltage change when
only baseplate temperature is changed during operation.
-S
Fig.2-6 Internal TRM Circuit (For the Reference)
- 7 -
TDK-Lambda
CN-A110 Series
Instruction Manual
7. Over Current Protection (OCP)
10. Remote Sensing (+S, –S terminal)
This power module has built-in OCP function.
Remote sensing terminal is provided to compensate for
voltage drop across the wirings from the power module output
terminal to the load input terminal.
When output current is overload conditions, output voltage
lowers. Output will recover when short circuit or overload
conditions are released. OCP setting value is fixed and
therefore, can not be externally adjusted.
Take note that power module might be damaged continuing
output short circuit or over load conditions depending on
thermal conditions.
When remote sensing function is not used (local sensing),
short +S terminal to +V terminal and, -S terminal to –V
terminal.
When using remote sensing function, output power of power
module should be within maximum output power. Also, use
within maximum output adjustable voltage at output terminal.
When wire is long, Power Supply operation might be
unstable due to noise. Moreover, please do enough prior
evaluation for remote sensing function by using shielded wire,
twist pair, or parallel pattern.
For 5V Model Only
Take note, when output voltage drops down below lower side
of adjustment range by output short circuit or over load
conditions, output might be shut down. Output can be
recovered by manual reset of the CNT terminal or by turning
input line off and then turning it on again.
Stabilize the output voltage at load
+S
+V
+
5V Model
OCP(shut down) release input voltage value
: 45VDC and below
CN -A110 C2
C3
Load
-
-V
-S
8. Over Voltage Protection (OVP)
This power module has built-in OVP function.
OVP set point is relative to the rated output voltage value.
When output voltage exceed OVP set point, output voltage
shut down. OVP setting value is fixed and therefore, can not be
externally adjusted.
When OVP is triggered, output can be recovered by manual
reset of the CNT terminal or by turning input line off and then
turning it on again.
Fig.10-1 Remote Sensing is used
Stabilize the output voltage at output
+V
+S
+
CN-A110
C2
C3
Load
-
-S
OVPreset input voltage value : 45VDC and below
-V
Verifying OVP function shall be done by increasing output
voltage with external resistor. For verifying OVP function,
avoid applying external voltage to output terminal because this
will cause power module damage.
Fig.10-2 Remote Sensing is not used (Local Sensing)
11. ON/OFF Control (CNT terminal)
Without turning the input supply on and off, the output can
be enabled and disabled using this function. This function
also can be used for output sequence of plural power
modules.
ON/OFF control circuit is on the primary side (the input
side). For secondary control, isolation can be achieved
through the use of an opto-coupler or relay.
9. Over Temperature Protection (OTP)
This power module has built-in OTP function. This function
operates and shuts down the output when ambient temperature
or internal temperature of power module abnormally rises.
OTP operates at 105℃ to 120℃ baseplate temperature.
OTP can be released when baseplate temperature drops down
approximately to within 80℃ to 95℃. However, take note
that OTP will operate again unless the cause of abnormal heat
of the power module is eliminated.
CNT Terminal Level to -Vin Terminal
H Level ( 4V≦H≦35V ) or Open
L Level ( 0V≦L≦0.8V ) or Short
Output Status
OFF
ON
Table11-1 CNT Terminal Level
- 8 -
TDK-Lambda
CN-A110 Series
Instruction Manual
Notes
1. When ON/OFF control function is not used, CNT
(a) Parallel connection to enhance the output and to
improve the reliability
terminal should be shorted to –Vin terminal.
2. When using long wiring, for prevention of noise, attach a
capacitor between CNT terminal and –Vin terminal.
3. At L level, maximum source current from CNT terminal
to –Vin terminal is 0.5mA.
Fuse
+Vin
CNT
+Vo
+S
+
TRM
-S
CN200A110
Load
PC/NC
-Vin
-Vo
-
Fuse
4. The maximum CNT terminal voltage is 35V.
+Vin
CNT
+Vo
+S
TRM
-S
CN200A110
(1) Output ON/OFF control
PC/NC
-Vin
-Vo
Fuse
+Vin
Fig.12-1 PC terminal Connection
CNT
Transistor, Relay
or Equivalent
(b) Parallel connection for programmed output voltage.
-Vin
Fuse
+Vin
CNT
+Vo
+S
+
Fig.11-1 CNT Connection (1)
TRM
-S
CN200A110
Load
PC/NC
-Vin
-Vo
-
(2) Secondary (output side) control
Fuse
Fuse
+Vin
CNT
+Vo
+S
+Vin
TRM
-S
CN200A110
PC/NC
-Vin
CNT
-Vo
Secondary
(output side )
Fig.12-2 Programmed Output Voltage
-Vin
Fig.11-2 CNT Connection (2)
(c) Parallel connection for variable output voltage
(by External Variable Resistor)
12. Parallel Operation (PC terminal)
This terminal is available for CN200A110-12, 15 and 24
Models only. Do not use CN200A110-5, CN30A110,
CN50A110 and CN100A110 in parallel operation.
Also, CN200A110 Series is not possible for N+1 parallel
redundant operation.
By connecting the PC terminal of each power module, output
current can be equally drawn from each power module. A
maximum of 3 units of the same model can be connected.
Take care that the maximum power of each module should
not be exceeded.
Fuse
+Vin
CNT
+Vo
+S
+
TRM
-S
CN200A110
Load
PC/NC
-Vin
-Vo
-
Fuse
+Vin
CNT
+Vo
+S
TRM
-S
CN200A110
PC/NC
-Vin
-Vo
Fig.12-3 Variable Output Voltage
(by External Variable Resistor)
Also note that using OR diodes during parallel operation
could cause power module malfunction.
(d) Parallel connection for variable output voltage
(by Applied External Voltage)
Notes
Fuse
+Vin
CNT
+Vo
+S
+
1. Output voltage accuracy of each module should be set
within ±1% when using in parallel operation.
2. Maximum output current of each module should be
derated at 90% or less.
3. Use the same type, length and diameter of wire for each
module when using in parallel operation.
TRM
-S
CN200A110
Load
PC/NC
-Vin
-Vo
-
Fuse
+Vin
CNT
+Vo
+S
TRM
-S
CN200A110
PC/NC
-Vin
-Vo
Fig.12-4 Variable Output Voltage
(by Applied External Voltage)
- 9 -
TDK-Lambda
CN-A110 Series
Instruction Manual
13. Series Operation
Series operation is possible for CN-A110 series. Connections
shown fig. 13-1 and fig. 13-2 are possible.
Measurement Point of Baseplate Temperature
+V
+S
+
(a) CN30,50,100A
-S
-V
Load
+V
+S
-S
-V
-
Measurement Point of Baseplate Temperature
Fig.13-1 Series Operation due to High Output Voltage
(b) CN200A
Fig.14-1 Measurement Point of Baseplate Temperature
+V
+S
+
100
80
60
40
20
0
Load
-
-S
-V
+V
+S
+
Load
-
-40
-20
0
20
40
60
80
100
-S
Baseplate Tenperature [℃]
-V
Fig.14-2 Derating Curve
Fig.13-2 Series Operation due to ±Output
To further improve reliability, it is recommended to use this
module with baseplate temperature derating.
14. Operating Ambient Temperature
There is no restriction on mounting direction but there should
be enough consideration for airflow so that heat does not
accumulate around the power module vicinity.
Determine external components configuration and mounting
direction on PCB such that air could flow through the heatsink
at forced cooling and conventional cooling.
By maintaining actual baseplate temperature below 100℃,
operation is possible. For details on thermal design, refer to
Application Notes “Thermal Design”.
15. Operating Ambient Humidity
Take note that moisture could lead to power module
abnormal operation or damage.
16. Storage Ambient Temperature
Please note that sudden temperature changes can cause
condensation buildup, and other harmful affects to each
terminal solder.
17. Storage Ambient Humidity
Note :
Take enough care when storing the power module because
rust which causes poor solderability would form in each
terminal when stored in high temperature, high humidity
environment.
Maximum baseplate temperature is 100℃. For worst case
operating condition, verify baseplate temperature at
measurement point indicated in fig. 14-1.
- 10 -
TDK-Lambda
CN-A110 Series
Instruction Manual
18. Cooling Method
*
Fig.19-1 to Fig.19-3 PC/NC terminal available only for
CN200A Model.
Operating temperature range is specified by the baseplate
temperature. Therefore, several methods of heat dissipation are
possible.
Withstand Voltage Testing with Attached External
Application
The above Withstand Voltage Testing specification applies only
to power module as stand–alone unit. Please take note of the
following points when Withstand Voltage Testing is performed
with attached external application.
For applications that require capacitor connections between input
– FG and output – FG as shown in Fig. 19-4, set capacitor ratio of
input – FG capacitor (C4, C5) and output – FG capacitor (C6, C7)
as shown below, in order to satisfy 3kVAC Withstand Voltage
Testing for input – output.
For details on thermal design, refer to Application Notes “Thermal
Design”.
19. Withstand Voltage
This power module is designed to have a withstand voltage of
3kVAC between input and output, 2kVAC between input and
baseplate and 500VAC between output and baseplate for 1 minute.
When conducting withstand voltage test during incoming
inspection, set the current limit value of the withstand voltage
testing equipment to 10mA.
Furthermore, avoid throw in or shut off of the testing
equipment when applying or when shutting down the test
voltage. Instead, gradually increase or decrease the applied
voltage. Take note especially not to use the timer of the test
equipment because when the timer switches the applied
voltage off, impulse voltage which has several times the
magnitude of the applied voltage is generated causing damage
to the power module.
・CN30,50,100A
Capacitor ratio of Input – FG (C4, C5)
and Output – FG (C6, C7)
C4, C5 : C6, C7 = 1 : 1.3 – 1.5
Fuse
Connect the terminals as shown in the diagram below.
+Vin
+V
+S
+
C1
CNT
-Vin
C4
C5
Withstand
Voltage Tester
C6
C7
+Vin
CNT
+V
+S
Load
-
TRM
-S
C2
C3
CN-A110
-V
TRM
-S
PC/NC＊
FG
-Vin
Baseplate
-V
Baseplate
(a) CN30,50,100A
3kVAC
1 minute
Fig.19-1 Withstand Voltage Test for Input – Output
・CN200A
Capacitor ratio of Input – FG (C4, C5)
and Output – FG (C6, C7)
Withstand
Voltage Tester
+Vin
CNT
+V
+S
C4, C5 : C6, C7 = 1 : 1.0 – 2.0
PC/NC＊
TRM
-S
-Vin
-V
Baseplate
Fuse
2kVAC 1 minute
Fig.19-2 Withstand Voltage Test for Input – Baseplate
+Vin
+V
+
+S
C1
CNT
C4
C5
C6
C7
Load
-
TRM
-S
CN200A110
C2
C3
PC/NC
-Vin
-V
+Vin
+V
+S
FG
Baseplate
CNT
TRM
-S
PC/NC＊
-Vin
(b) CN200A
Fig.19-4 Example of connecting external application
-V
Baseplate
Withstand
Voltage Tester
500VAC 1 minute
Fig.19-3 Withstand Voltage Test for Output – Baseplate
- 11 -
TDK-Lambda
CN-A110 Series
Instruction Manual
20. Isolation Resistance
Use DC insulation tester (MAX 500V) between output and
baseplate. Insulation resistance value is 100MΩ and above at
500VDC applied voltage. Make sure that during testing, the
isolation testers do not produce a high pulse when the applied
voltage is varied.
Ensure that the tester is fully discharged after the test.
+Vin
+V
+S
CNT
PC/NC＊
TRM
-S
-Vin
-V
Baseplate
Over 100MΩat
500VDC
Over 100MΩ at 500VDC
Fig.20-1 Isolation Test
*
Fig.20-1 PC/NC terminal available only
for CN200A Model.
21. Vibration
Vibration of power module is defined in case of mounting
on printed circuit board.
For details, refer to “Mounting Method”.
22. Shock
Withstand shock value is defined to be the value at TDK -Lambda
shipment and packaging conditions.
- 12 -
TDK-Lambda
CN-A110 Series
Instruction Manual
■Installation
(1) Method to Fix
1. Mounting Method
To fix a power module onto printed circuit board, use M3 screws
and mount it to the M3 threaded holes of the power module.
Recommended torque is 0.54N∙m.
By the following instruction shown in Fig.1-1, mount power
module onto printed circuit board.
M3 Screw
Spring Washer
(2) Mounting Holes
Plain Washer
Mounting holes of the power module are connected to baseplate.
Connect baseplate to FG (Frame Ground) by using this mounting
holes.
Heatsink
(3) Mounting Holes on Printed Circuit Board
Refer to the following sizes when determining diameter of hole
and land diameter of printed circuit board.
Silicone Grease
M3 Threaded
Mounting Hole
Input / Signal terminals (φ1.0 mm )
Power Module
Hole diameter
Land diameter
Output terminals
CN30,50,100A
Hole diameter
Land diameter
CN200A
: φ1.5 mm
: φ2.5 mm
Printed Circuit Board
(φ1.5 mm )
Plain Washer
: φ2.0 mm
: φ3.5 mm
(φ2.0 mm )
Spring Washer
M3 Screw
Hole diameter
Land diameter
: φ2.5 mm
: φ5.0 mm
(a) CN30,50,100A
Mounting Holes (FG)
Hole diameter
: φ3.5 mm
: φ7.0 mm
Land diameter
M3 Screw
Spring Washer
For position of the holes, see outline drawing of the power
module.
Plain Washer
Heatsink
(4) Recommended Material of PCB
Recommended materials of the printed circuit board is double
sided glass epoxy with through holes.
(thickness t:1.6mm , copper 35μm).
Silicone Grease
M3 Threaded
Mounting Hole
Power Module
(5) Input / Output Pattern Width
Printed Circuit Board
Large current flows through input and output pattern. If pattern
width is too narrow, heat on pattern will increase because of
voltage drop of pattern. Relationship between allowable current
and pattern width varies depending on materials of printed circuit
board, thickness of conductor. It is definitely necessary to confirm
on manufacturers of printed circuit board for designing pattern.
Plain Washer
Spring Washer
M3 Screw
(b) CN200A
Fig.1-1 Mounting Method
- 13 -
TDK-Lambda
CN-A110 Series
Instruction Manual
2. Heatsink Installation Method
(1) Method of Fixing Heatsink
To fix the heatsink onto power module, use M3 screws and
mount it to the M3 threaded holes (2 places or 4 places
depending on the package size) at the baseplate side.
Recommended torque is 0.54 N∙m.
Use silicone grease or thermal conductive sheet in between
heatsink and baseplate to minimize the contact thermal
resistance and to enhance the heat conductivity.
Also use the no-warped heatsink and make sure good
contact between baseplate and heatsink.
(2) Mounting Hole of Heatsink
Recommended mounting hole is as follows.
φ3.5 Non-threaded hole
3. Regarding Vibration
The vibration specification of the module is determined
assuming that only the power module is mounted on printed
circuit board. To prevent excessive force to the module and the
printed circuit board, fix the heatsink to the chassis as well as
to the module when a large size of heatsink is used.
4. Recommended Soldering Conditon
Recommended soldering conditions are as follows.
(1) Soldering dip
Dip condition
: 260ºC within 10 seconds
Pre-heat condition : 110ºC for 30 - 40 seconds
(2) Soldering iron
350ºC within 3 seconds
※Soldering time changes according to heat capacity of
soldering iron, pattern on printed circuit board, etc. Please
confirm actual performance.
5. Recommended Cleaning Condition
Recommended cleaning condition after soldering is as
follows.
(1) Cleaning solvent
IPA (isopropyl alcohol )
(2) Cleaning Procedure
Use brush and dry the solvent completely.
- 14 -
TDK-Lambda
CN-A110 Series
Instruction Manual
■Before concluding power module damage
Verify following items before concluding power module
damage.
1) No output voltage
・Is specified input voltage applied?
・Are the ON/OFF control terminal (CNT), remote sensing
terminal (+S, –S), output voltage trimming terminal (TRM)
correctly connected?
・For cases where output voltage adjustment is used, is the
resistor or variable resistor setting, connections correctly done?
・Are there no abnormalities in the output load used?
・Is the baseplate temperature within the specified temperature
range?
2) Output voltage is high
・Are the remote sensing terminals (+S, –S) correctly
connected?
・Is the measurement done at the sensing points?
・For cases where output voltage adjustment is used, is the
resistor or volume setting, connections correctly done?
3) Output voltage is low
・Is specified input voltage applied?
・Are the remote sensing terminals (+S, –S) correctly
connected?
・Is the measurement done at the sensing points?
・For cases where output voltage adjustment is used, is the
resistor or variable resistor setting, connections correctly done?
・Are there no abnormalities in the output load used?
4) Load regulation and line regulation is large
・Is specified input voltage applied?
・Are the input terminals and the output terminals firmly
connected?
・Is the measurement done at the sensing points?
・Is the input or output wire too thin?
5) Output ripple voltage is large
・Is the measuring method used the same or equivalent with
the specified method in the Application Notes?
・Is the input ripple voltage value within the specified value?
- 15 -
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