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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.
INSTALLATION WARNING
・ When installing, ensure that work is done in accordance with the instruction manual. When installation is improper,
there is risk of electric shock and fire.
・ Installation shall be done by Service personnel with necessary and appropriate technical training and experience.
There is a risk of electric shock and fire.
・ Do not cover the product with cloth or paper etc. Do not place anything flammable around. This might cause damage,
electric shock or fire.
WARNING ON USE
・ Do not touch this product or its internal components while circuit in operation, or shortly after shutdown. You may
receive a burn.
・ While this product is operating, keep your hands and face away from it as you may be injured by an unexpected situation.
・ There are cases where high voltage charge remains inside the product. Therefore, do not touch even if they are not in
operation as you might get injured due to high voltage and high temperature. You might also get electric shock or burn.
・ Do not make unauthorized changes to this product nor remove the cover as you might get an electric shock or might
damage the product. We will not be held responsible after the product has been modified, changed or dis­assembled.
・ Do not use this product under unusual condition such as emission of smoke or abnormal smell and sound etc. Please stop
using it immediately and shut off the product.
It might lead to fire and electric shock. In such cases, please contact us. Do not attempt repair by yourself, as it is
dangerous for the user.
・ Do not operate and store these products in environments where condensation occurs due to moisture and humidity.
It might lead fire and electric shock.
・ Do not drop or apply shock to this product. It might cause failure. Do not operate these products mechanical stress is
applied.
CAUTION ON MOUNTING
・ Confirm connections to input/output 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.
・ Input line, please use the wires as short and thick as possible.
・ Do not use this product in special environment with strong electromagnetic field, corrosive gas or conductive substances
and direct sunlight, or places where product is exposed to water or rain.
・ Please shut down the input when connecting input and output of the product.
・ When installing in environment where conductive foreign, dust and liquid may be present,
please consider penetration of above foreign material in the power supply by installing filter, to prevent trouble or
malfunction.
CHVM3 Series
Instruction Manual
<Page>
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TDK­Lambda
CHVM3 Series
INSTRUCTION MANUAL
QC001­04­03A

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Summary of Contents for TDK-Lambda CHVM3 Series

  • Page 1 TDK­Lambda CHVM3 Series INSTRUCTION MANUAL CHVM3 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.
  • Page 2: Caution On Use

    TDK­Lambda CHVM3 Series INSTRUCTION MANUAL CAUTION ON USE • Product individual notes are shown in the instruction manual. If there is any difference with common notes individual notes shall have priority. • Before using this product, be sure to read the catalog and instruction manual. There is risk of electric shock or damage to the product or fire due to improper use.
  • Page 3 TDK­Lambda CHVM3 Series INSTRUCTION MANUAL LONG­TERM STORAGE METHOD AND LONG­TERM STORAGE PERIOD • Please keep the product in carton box. • Please do not apply excessive vibration, shock or mechanical stress applied directly to the product. • Please keep away from direct sunlight.
  • Page 4 TDK­Lambda CHVM3 Series INSTRUCTION MANUAL The CHVM series is an adjustable output voltage type mid­high voltage DC­DC converter. Output voltage can be controlled using an external voltage or external adjustable resistor. The CHVM series has adopted a 5 sided metallic shield, with lower ripple and lower noise.
  • Page 5: Test Circuit

    TDK­Lambda CHVM3 Series INSTRUCTION MANUAL ■ Test circuit CHVM +Vin Vout (+ or -) Load -Vin Vout (Com) Vref Vcont C1 =47μ F C2=4700 pF (OPEN) Output voltage control (Apply 0V to 4V) Warning 1: The ground line (2pin, 5pin) between the input/output, and the case are internally connected.
  • Page 6 TDK­Lambda CHVM3 Series INSTRUCTION MANUAL ■ Shape, dimensions and terminal composition CHVM2R7‐12‐0180PW MADE IN JAPAN Input : +10.8‐+13.2V 350mA Output : 0‐+180V 0‐15mA +Vin ‐Vin Vcont Vref Vout(Com) Vout(+ or ‐) (4.44) 2.54 3=7.62 × ( Bottom view ) 1)Pins Pin­No.
  • Page 7 TDK­Lambda CHVM3 Series INSTRUCTION MANUAL ■ Over current protection The CHVM series has a over load and load short protection installed, which is the over current protection. When the product status is in over load or load short mode, the output voltage will decrease, and once the problem has been removed, the voltage will increase again.
  • Page 8 TDK­Lambda CHVM3 Series INSTRUCTION MANUAL ■ Setting and adjustment of output voltage The CHVM series output voltage can be adjusted by using an external voltage or external adjustable resistor. CHVM Vout (+ or -) +Vin Load -Vin Vout (Com) C1=47 μ F...
  • Page 9 TDK­Lambda CHVM3 Series INSTRUCTION MANUAL ■ Vref pin (standard voltage output) When controlling the output voltage with an adjustable resistor, this pin is used. Vref has a standard output voltage of 4V. In this case, the external adjustable resistor is 5KΩ. Since the resistance value from the external adjustable resistor will decide the output voltage with the effect of the specified value, use a resistance value with an accuracy of 5KΩ±5%.
  • Page 10 TDK­Lambda CHVM3 Series INSTRUCTION MANUAL ■ To reduce output noise further The CHVM series does need any external parts, however to lower the output noise farther, connect a capacitor C2 like the figure below. CHVM +Vin Vout (+ or -)