Ultra small size adjustable output type high voltage power supply
2W to 2.6W high voltage DC-DC converter
0V-470V½1000V½1500V½2000V VHV Series
The VHV series is the first high voltage product supply in the industry to use the latest SMT (surface mount technology)
making the size 1/5 to 1/6 from the normal product, with an adjustable output voltage type mid-high voltage DC-DC converter.
Output voltage can be controled using an external voltage or external adjustable resistor. The VHV series has adopted a 5 side
metallic shield, with farther low ripple and low noise.
■
Features
½PCB
mounting type
½Adopted
a 5 sided metallic shield case
½Output
capacity 2W to 2.6W
½Remote
ON/OFF control
½Over
current protection
½High
reliability, long life
½Worlds
smallest size device
½Low
ripple noise of 30mVp-p
½Low
price
½Adjustable
voltage using an external voltage
½UL
certified product (UL File No. E305960)
■
Model name/Rating
■
Specifications
Note1: The output voltage can be controlled by impressing the Vcont voltage. Using an adjustable resistor or an external voltage,voltage should
be impressed on the Vcont pin in order to control the output voltage. When Vcont voltage=0V the output voltage(residual output voltage)
should be less than 0.5% of the max output voltage (at Input/Output rating).
■
Test circuit
■
Block diagram
+Vin
1
+
12V
-Vin
2
SW1
Open=ON
Short=OFF
ON/OFF
Control part
DC-AC
switch circuit
High voltage
oscillating
transistor
C o n tro l I
C
output voltage control
over current protection
standard voltage part
High voltage
recitification
part
Vout (+ or -)
7
Load
6
Vout (com)
Case
voltage detection
circuit
SW1
Warning 1: The input-output ground line and case are internally connected.
Warning 2: Vref is 4V (When external VR=5KΩ)
Warning 3: The ON/OFF can be controlled with a transistor.
ON/OFF 5
Vref
External voltage (0 to 4V)
4
Vcont 3
+
or
VR (5KΩ)
Kaga Electronics/Volgen DC/DC Converters
www.volgen.com
BHV20110111
■
Model/Dimensions/Pin configuration (M-11 case)
19.25
2.0
5.0
C
L
Weight : 65g typ.
Units : mm
Tolerance unless otherwise specified ±0.5
pin-NO.
1
2
3
4
5
6
7
pin name
+Vin
-Vin
Vcont
Vref
ON/OFF
Vout (com)
Vout (+ or -)
1)Pins
Material : Phosphorous bronze
Treatment：Ni base Au coating
2)Case
Material : Brass
Treatment : Nickel coating
■
Standard usage instructions
■
ON/OFF control
By opening and closing the ON/OFF pin and -Vin pin
the external voltage can be 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 1.0V½1mAmax) will turn the output OFF
The ON/OFF pin is internally pulled up to the +Vin, so be careful
of the voltage from the switching element of the ON/OFF pin
(photo couplers, transistors, etc)
Keep the (5) open when not using the ON/OFF control.
The VHV series does not require any external parts,
however when the impedance is high, for example:
the distance between the power supply and converter
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.
ON/OFF
ON/OFF
(5)
(2)
-Vin
(5)
(2)
-Vin
Non-isolation type
Isolation type
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%.
Kaga Electronics/Volgen High Voltage DC-DC Converters
2
BHV20080717
25.0±0.7
19.75
Microcontroller MCU
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