OHV12-1.0K1500N [BELLNIX]
Ultracompact, Adjustable Output High-Voltage Power Supply 1.5Watt Medium-High Voltage DC-DC Converter;型号: | OHV12-1.0K1500N |
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 | 下载: | 下载PDF数据表文档文件 |
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
0.28
0.28
0.28
0.28
0.28
11.0-13.0
11.0-13.0
11.0-13.0
11.0-13.0
11.0-13.0
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
0-1.5
0-1.0
666.7
666.7
1500
1500
2857
2857
5
5
7
7
10
10
0-1.0
0-0.7
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
1
7
+Vin
Vout (+ or -)
+Vin
Vout (+ or -)
High-voltage
oscillation
transformer
DC-AC
converter
High-voltage
rectifier
1
+
7
12V
C1
Load
+
Control IC
CASE
-Vin
Load
12V
Output voltage control circuit
Over current protection circuit
Reference voltage generator
Com (Vout)
6
2
Vref
4
SW1
ON/OFF
5
Vcont
3
-Vin
2
C1=47μF
6
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
5
Vref
4
3
+
or
VR (5kΩ)
1
BHV20120208
■ Shape, dimensions and terminal composition
44.0±0.5
16.0
Pin-NO.
Pin name
+Vin
1
2
3
4
5
6
7
-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
1
7
+Vin
Vout (+ or -)
ꢀꢀꢀꢀBetween ON/OFF terminal (5) and -Vin terminal (2)
ꢀꢀꢀꢀ(1) Output OFF when opened
+
Load
12V
C1
ꢀꢀꢀꢀ(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
6
2
SW1
ON/OFF
5
Vcont
C1=47μF
Open=OFF
Short=ON
SW1
4
3
(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).
2
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
1
7
Vout (+ or -)
Com (Vout)
+Vin
+
12V
SW1
Load
C1
10
0
CASE
-Vin
100% output
80
6
2
Vref
ON/OFF
5
Vcont
3
C1=47μF
Open=OFF
Short=ON
60
SW1
4
(OPEN)
50% output
40
+
Output voltage control
(0V to 6V applied)
20
0
0
Output current (lo)
100%
OHV series over current protection
circuit characteristic
Output voltage – VR resistance characteristic
100%
80%
60%
40%
20%
0%
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
17.75
Output voltage – output control voltage characteristic
100%
80%
60%
40%
20%
0%
1.5V
3V
6V
0V
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.
3
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
1
7
Vout (+ or -)
+Vin
Reference voltage
generating circuit
+
OHV series
12V
C1
Load
C2
Vout (com)
6
CASE
-Vin
Com (Vout)
6
2
Vref
Vcont
4
3
Vref
SW1
ON/OFF
5
Vcont
3
C1=47μF
Open=OFF
Short=ON
SW1
4
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
80
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
60
40
20
0
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
0
+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
4
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
C1
C2
C3
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
Non-isolated type
Non-isolated type
15 to 32
7 to 36
12
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
Isolated type
Isolated type
Isolated type
ꢀ
18 to 36
18 to 36
18 to 36
18 to 36
18 to 36
9 to 12
12
12
1666
500
BTC24-12S50
12
BTD24-12S100
12
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
5
BHV20120208
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