OHV12-1.0K1500P [BELLNIX]

Ultracompact, Adjustable Output High-Voltage Power Supply 1.5Watt Medium-High Voltage DC-DC Converter;


型号：	OHV12-1.0K1500P
厂家：	Bellnix
描述：	Ultracompact, Adjustable Output High-Voltage Power Supply 1.5Watt Medium-High Voltage DC-DC Converter
文件：	总5页 (文件大小：290K)
中文：	中文翻译
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Ultracompact, Adjustable Output High-Voltage Power Supply

1.5Watt Medium-High Voltage DC-DC Converter

1000V, 1500V, 2000V OHV Series

The OHV series is our new line of medium-high voltage DC-DC converters featuring an ultracompact size with the footprint reduced

by about 60% as compared to conventional models.

With a pentahedron metal shield case, ripple noise has been reduced to as low as 10mVp-p. Output voltage can be adjusted by

external voltage or external variable resistor. The built-in short circuit and overcurrent protection provide high reliability and a long

life.

■ Features

･Ultralow ripple noise 10mVp-p

･World's smallest size (about a 60%

reduction from comparable

conventional models)

･ON/OFF Control

･Adjustable voltage by variable resistor or

external voltage

･Adjustable output voltage from 0 to

100%

･Use of pentahedron metal shield case

･PCB mount type

･Control voltage 0 to +6V

･Built-in over current protection circuit ･High reliability and long life

･Output capacity 1.5W

･Supports 24V input with an external DC-DC converter

■ Model/Standard

Models

OHV Series

Load Resistance

(KΩ) min

Input I

(A) typ

Input V

(Vdc)

Output V

(Vdc) *1

Output I

(mA)

Ripple Noise

(mVp-p) typ

OHV12-1.0K1500P

OHV12-1.0K1500N

OHV12-1.5K1000P

OHV12-1.5K1000N

OHV12-2.0K700P

OHV12-2.0K700N

0.28

11.0-13.0

0 to +1000

0 to -1000

0 to +1500

0 to -1500

0 to +2000

0 to -2000

0-1.5

0-1.0

666.7

1500

2857

0-1.0

0-0.7

Note 1: See P5 on how to use with a 24V input voltage.

■ Specifications

Line regulation

0.01% typ. (for a line regulation of 11.0 to 13.0V)

Load regulation

0.02% typ. (for a load current regulation of 0 to 100%)

Temperature regulation

Over current protection

Output voltage setting accuracy

70ppm/°C typ. (for temperature regulation of -10°C to +50°C)

Drooping characteristic, built-in automatic return circuit, activated at 105% or more

±2% or less (when controlling a 6.0V external voltage)

Output voltage control

ON/OFF control

Either with 0V to +6V external voltage or a 5KΩ external variable resistor

Between 2pin and 5pin, OFF when opened and ON when short-circuited

-10°C to +50°C (no temperature derating needed

-25°C to +85°C

Operating temp range

Storage temp range

Operating humidity range

20% to 95% RH (no condensation)

Isolation between input and

output

Non-isolated type (2pin through 6pin are connected inside)

MTBF expectation

Min. 390,000 to 400,000H (calculated from Bellnix MTBF calculation table)

Note 2 Output voltage is controlled by applying Vcont voltage. Apply voltage to the Vcont terminal by either variable resistor or external voltage to control output voltage.

Note 2 When Vcont voltage is zero, output voltage (output residual voltage) will be within 0.5% of maximum output voltage (input/output rating).

Note 3 Details are subject to change for improvement, etc., without prior notice.

■ Test circuit

■ Block diagram

OHV

+Vin

Vout (+ or -）

+Vin

Vout (+ or -）

High-voltage

oscillation

transformer

DC-AC

converter

High-voltage

rectifier

12V

Load

Control IC

CASE

-Vin

Load

12V

Output voltage control circuit

Over current protection circuit

Reference voltage generator

Com (Vout)

Vref

SW1

ON/OFF

Vcont

-Vin

C1=47μF

Open=OFF

Short=ON

SW1

Com(Vout)

(OPEN)

Voltage detection circuit

case

ON/OFF

Output voltage control

(0V to 6V applied)

Control

SW1

Open=OFF

Short=ON

(1) The input-output ground lines and the case are connected

(1) internally.

(2) Vref is 6V (when external VR is 5KΩ)

(3) ON/OFF can be controlled by a transistor.

Vcont

External voltage (0 to 6V)

ON/OFF

Vref

VR （5kΩ）

BHV20120208

■ Shape, dimensions and terminal composition

44.0±0.5

16.0

Pin-NO.

Pin name

+Vin

-Vin

Vcont

Vref

ON/OFF

Com (Vout)

Vout (+ or -)

Weight: TBD

Unit: mm

2.0

0.5

Unspecified dimensional tolerance ±0.5

Lot indication

1) Terminal

7-0.64□L=4.2 min

Material: Phosphor bronze

Treatment: Ni base Au plating

2) Case

35.5

ꢀMaterial: Brass

ꢀTreatment: Nickel plating

5.08 7.62

±0.3 ±0.3

7.62

±0.3

2×CASE PIN

2.54±0.1

2.54×4=10.16

■ Standard method of use

■ ON/OFF Control

Output voltage can be turned ON/OFF by closing/opening between the

ON/OFF terminal and -Vin terminal.

OHV

+Vin

Vout (+ or -）

ꢀꢀꢀꢀBetween ON/OFF terminal (5) and -Vin terminal (2)

ꢀꢀꢀꢀ(1) Output OFF when opened

Load

12V

ꢀꢀꢀꢀ(2) Output ON when short-circuited (0 - 0.4V, 1mA max.)

CASE

-Vin

As the ON/OFF terminal is pulled up to +Vin inside the power supply,

pay attention to the voltage of elements (photocoupler, transistor, etc.)

to switch the ON/OFF terminal.

Com (Vout)

Vref

SW1

ON/OFF

Vcont

C1=47μF

Open=OFF

Short=ON

SW1

(OPEN)

Short-circuit when ON/OFF is not controlled.

Output voltage control

(0V to 6V applied)

ON/OFF

(5)

ON/OFF

(5)

The OHV series does not basically require

additional parts, but add capacitor C1 to the input

terminal if input impedance is high due to a long

distance between the power supply and converter,

the input line is thin, a filter is inserted on the input

side, etc. When fitting a capacitor, try to add on

the converter terminal side so as to reduce lead

inductance.

(2)

-Vin

(2)

-Vin

Non-isolated type

Isolated type

Ensure that there is no chattering to the ON/OFF terminal which affects

output voltage. Output residual voltage is 0.5% or less when output is

OFF under ON/OFF control (at the rated input-output).

BHV20120208

Bellnix High Voltage DC-DC Converters

■ 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

Description of Vref terminal

(reference voltage output)

■

■ Recommended soldering conditions

This terminal is used for controlling output voltage

with a variable resistor. Vref outputs a reference

voltage of 6V. A 5KΩ external resistor is used in

Observe the following conditions for soldering each part.

(i) Soldering iron

340 - 360°C

230 - 260°C

5 seconds

(ii) Dip solder bath

10 seconds

this case.

Since resistance value (tolerance) of an external

resistor affects the Vref terminal voltage preset

value and determines output voltage, ensure that

the resistor has high accuracy of 5KΩ±5%. The

type of the variable resistor (5KΩ) does not matter,

but those of a good temperature coefficient are

recommended.

■ To reduce output noise further

The OHV series basically does not require any additional parts,

but to reduce output noise further, add Capacitor C2 as shown

below.

OHV

Vref voltage: 6±0.3V

Vout (+ or -)

+Vin

Reference voltage

generating circuit

OHV series

12V

Load

Vout (com)

CASE

-Vin

Com (Vout)

Vref

Vcont

Vref

SW1

ON/OFF

Vcont

C1=47μF

Open=OFF

Short=ON

SW1

C2=0.047 to 0.1μF

(OPEN)

External variable resistor (5.0KΩ)

Output voltage control

(0V to 6V applied)

■ Temperature derating

To reduce output noise even further, position C2 near the Load

with the shortest input-output wiring while paying attention to

creepage and spatial distances .

Can be activated in this area but without

performance warranty.

100

Point!

(i)

Add a capacitor of a good high frequency

characteristic to the input side.

(ii) Design a pattern for the ground (common) line to be

thick and short so as to reduce common impedance.

(iii) Ensure that a capacitor to add to the output side shall

have a sufficient withstand voltage and shall be

attached to the terminal end. Try to make the lead

wires of the capacitor the shortest possible in this case

as well. In addition, with a load requiring a

certain response speed, pay attention to the time

-20 -10

+10 +20 +30 +40 +50

Ambient temperature (°C)

■ Protection against reverse connection

Reverse connection of input voltage may result in the breakage of a

converter. If there is any possibility for a reverse connection, add a

diode and a fuse to the input terminal as shown below.

Fuse

+Vin

-Vin

OHV

12V

BHV20120208

Bellnix High Voltage DC-DC Converters

How to use for a 24V input voltage

By connecting a 24V-input 12V-output DC-DC converter to the

front of the OHV series, the OHV series can be used for a 24V

input voltage.

External DC-DC converter

Circuit diagram of 12V input

24V

12V

Vin

Vout

+Vin

Vout (+ or -）

DC/DC

OHV

GND

CASE

-Vin

Com (Vout)

Vref

ON/OFF

Vcont

SW1

(OPEN)

Output voltage control

ꢀꢀꢀ ꢀꢀExamples of DC-DC converters

Model

Vout [V]

Iout [mA]

Isolation

Vin [V]

R-7812-0.5

Non-isolated type

15 to 32

7 to 36

500

600

BSS-05S0R6A

BSS-12S2R5A

BSA24-12S1R0

REC6-2412SRW/R/A

RPP20-2412S

3.3 to 24

15 to 36 9.5 to 15

2500

1000

500

Non-isolated type

Isolated type

ꢀ

18 to 36

9 to 12

1666

500

BTC24-12S50

BTD24-12S100

1000

When selecting a front DC-DC converter, the following shall

ꢀ

be borne in mind.

Select a DC-DC converter compatible to the OHV series

in its input power.

●

Pay attention to the temperature derating in selecting a

DC-DC converter.

For C1 and C2, use capacitors recommended in the data

sheet of the DC-DC converter concerned.

●

Always check the data sheet of a DC-DC converter before

use.

●

Warranty

The warranty term of the product is one year after

shipment. Should the product become defective

within the warranty period due to our design or

workmanship, the product will be repaired free of

charge or replaced. However, this warranty does not

cover products which have been subjected to

unauthorized inner modifications, etc.

The scope of our warranty is limited to that of the

said product.

Contact

If you have any further technical questions for this

product, please contact us.

E-mail: info@bellnix.com

URL: http://www.bellnix.com

BHV20120208

OHV12-1.0K1500P [BELLNIX]

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