Datasheet > OHV12-2.0K700P

OHV12-2.0K700P

更新时间： 2022-05-14 22:20:26

品牌	Logo	应用领域
BELLNIX		/
页数	文件大小	规格书
5页	290K
描述
Ultracompact, Adjustable Output High-Voltage Power Supply 1.5Watt Medium-High Voltage DC-DC Converter

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OHV12-2.0K700P 数据手册

■ Overcurrent protection circuit

■ Setting and adjustment of output voltage

The OHV series has a built-in over current

protection circuit against overload and load short-

circuit. The circuit reduces output voltage in case

of overload or load short-circuit and automatically

returns the output to normal when the cause is

eliminated.

The output voltage of the OHV series can be set and adjusted by

external voltage and external variable resistor.

OHV

Vout (+ or -)

Com (Vout)

+Vin

12V

SW1

Load

CASE

-Vin

100% output

Vref

ON/OFF

Vcont

C1=47μF

Open=OFF

Short=ON

SW1

(OPEN)

50% output

Output voltage control

(0V to 6V applied)

Output current (lo)

100%

OHV series over current protection

circuit characteristic

Output voltage – VR resistance characteristic

100%

80%

60%

40%

20%

The overcurrent protection circuit shows a

drooping characteristic. Ensure that the load to be

used is at least with the minimum resistance

specified for each series.

R1ꢀ5kΩ

R2ꢀ0kΩ

0kΩ

5kΩ

VR resistance

■ Recommended pattern

[Top View]

17.75

Output voltage – output control voltage characteristic

100%

80%

60%

40%

20%

1.5V

4.5V

2.54±0.1

2.54×4=10.16

5.08

±0.3

7.62

±0.3

7.62

±0.3

Output control voltage

●

In the above characteristic graph (output voltage - VR

resistance characteristic), the resistance R1 and R2

are a guideline. When setting output at a fixed voltage

with a fixed resistor, do so after determining R1 and

R2 using a variable resistor.

7-ꢀꢀ Hole dia. : φ1.2

2-ꢀꢀ Hole dia. : φ2.5

[mm]

(i)

The OHV series uses a metal case. When mounting

onto a double-sided board, wiring to this converter

should be on a soldered surface. When wiring, pay

enough attention to creepage distance because of

the high voltage of this converter.

Do not apply 6V+3% or more voltage to Vcont.

●

Use a variable resistor with a good temperature coefficient.

(ii)

When mounting onto a double-sided board, make

the land on the parts surface of the high voltage

output terminal as small as possible.

It is preset that when the resistance of the variable

resistor is 5.0KΩ, 6.0V is applied to the Vcont terminal

to obtain 100% output voltage. Since the tolerance of

the resistance value largely affects the maximum

output voltage, set the resistance value at 5.0KΩ±5%.

(iii)

Connect the case of the OHV series to -Vin or Com.

Try to reduce impedance to the ground as much as

possible.

BHV20120208

1 234 5

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