■

Standard usage instructions

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Setting/Adjusting the SHV series

The SHV series output voltage can be adjusted using an

external voltage or external adjustable resistor.

The SHV series does not require any external parts, however

when the impedance is high, for example: the distance

between the power supply and converter is long, the input line

is thin, or the input side has a filter then connecting a capacitor

C1 to the input side is recommended.

Place the capacitor as close as possible near to the

converter pin side, to lower the lead inductance.

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ON/OFF control

By opening and closing between the ON/OFF pin and Vin Com pin

the output voltage can be externally turned on and off.

Between the ON/OFF pin (5) and -Vin pin (2)

　　　　

1) Open will turn the output ON

　　　　

2) Short(0 to 1.0V､1mA max) will turn the output OFF

The ON/OFF pin is internally pulled up to 5V, so be careful

of the voltage from the switching element (photo couplers,

transistors, etc) of the ON/OFF pin.

Keep open when not using the ON/OFF control.

The chattering to the ON/OFF pin will affect the output voltage,

so choose one without any chattering. When the output is turned

off by ON/OFF control, the residual output voltage should be

within 0.5%. (at Input/Output rating)

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Over current protection

The SHV series installed the over current protection to

protect from the over load and load short. When the

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The above characteristics (Output voltage -VR resistor value

product status is in over load or load short mode, the

characteristic) graph is an indication of the resistance value

output voltage will be decreased, and once the problem

R1 and R2. Please check the output voltage bt the adjustable

has been removed, the voltage will increase again.

resistor etc. and adjust at the actual using.

●

Do not impress voltage higher than 4V+5% on the Vcont.

●

Use an adjustable resistor appliance with good temp

characteristics.

●

When the resistance value is 5.0KΩ(R1=0Ω, R2=5KΩ),

the max.voltage 4.0V will impress to Vcont pin. Therefore,

the margin of error for the resistance value will largely

affect the max output voltage, so use the resistance

value as 5.0KΩ±5%.

3

BHV20080822

100%

80%

60%

40%

20％

0%

Output voltage-VR resistance value

VR resistor value

R1　5KΩ

R2　0KΩ

0KΩ

5KΩ

Characteristic

ON/OFF

(5)

(2)

Non-isolated type

ON/OFF

(5)

(2)

Isolated type

-Vin

-Vin

12V

SW1

Load

6

3

+

C1

C2

5

+

C1=47μF

C2=4700pF

Output voltage control

（

Impress 0V to 4V）

4

ORG

（

OPEN）

1

2

7

+

Vin

-Vin

Vout (+ or -）

Vout (Com)

Vref

Vcont

ON/OFF

SW1

Open=ON

Short=OFF

RED

RED

BLK

BLK

BLU

YEL

0 to 2000V

0 to 1500V

0 to 1000V

0 to 500V

SHV

100

80

60

40

20

0

0 Output current (lo)

100％

100% Output

50% Output

(%)

SHV series

Over current

protection

characteristic

Load

12V

6

1

2

3

+

C1

C2

4

7

+

Output voltage

control

(0V to 4V)

SHV

+Vin

Vcont

Vref

R1

R2

-Vin

Vout (+ or -）

Vout (Com)

Output voltage-Output control voltage

0V

100%

80%

60%

40%

20%

0%

4V

3V

2V

1V

Output control voltage

Characteristic