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)
・Adjustable output voltage from 0 to
100%
・Control voltage 0 to +6V
・Built-in over current protection circuit
・Output capacity 1.5W
・ON/OFF Control
・Adjustable voltage by variable resistor or
external voltage
・Use of pentahedron metal shield case
・PCB mount type
・High reliability and long life
・Supports 24V input with an external DC-DC converter
■ Model/Standard
Input V
(Vdc)
Output V
(Vdc) *1
Output I
(mA)
Load Resistance
(KΩ) min
Input I
(A) typ
Ripple Noise
(mVp-p) typ
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
0-1.0
0-0.7
0-0.7
666.7
666.7
1500
1500
2857
2857
0.28
0.28
0.28
0.28
0.28
0.28
5
5
7
7
10
10
Models
OHV Series
OHV12-1.0K1500P
OHV12-1.0K1500N
OHV12-1.5K1000P
OHV12-1.5K1000N
OHV12-2.0K700P
OHV12-2.0K700N
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
70ppm/°C typ. (for temperature regulation of -10°C to +50°C)
Over current protection
Drooping characteristic, built-in automatic return circuit, activated at 105% or more
Output voltage setting accuracy
±2% or less (when controlling a 6.0V external voltage)
Output voltage control
Either with 0V to +6V external voltage or a 5KΩ external variable resistor
ON/OFF control
Between 2pin and 5pin, OFF when opened and ON when short-circuited
Operating temp range
-10°C to +50°C (no temperature derating needed
Storage temp range
-25°C to +85°C
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
+Vin
7
Vout (+ or -)
+Vin
12V
2
5
Output voltage control circuit
Over current protection circuit
Reference voltage generator
6
Vref
ON/OFF
SW1
Load
12V
Com (Vout)
-Vin
Short=ON
7
Control IC
+
CASE
Open=OFF
Vout (+ or -)
High-voltage
rectifier
Load
C1
SW1
High-voltage
oscillation
transformer
DC-AC
converter
1
+
Vcont
4
-Vin
C1=47μF
6
3
2
(OPEN)
+
case
Output voltage control
(0V to 6V applied)
(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.
SW1
Open=OFF
Short=ON
Com(Vout)
Voltage detection circuit
ON/OFF
Control
ON/OFF
5
Vref
4
Vcont
3
External voltage (0 to 6V)
or
VR (5kΩ)
+
1
BHV20120208