Isolated
DC/DC Converter
VLA106-15242
Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272
1Rev. 01/10
Description:
VLA106-15242 is a DC-DC
converter. Its output power is
2.4W and the input is isolated
from the output. The over-current
protection circuit is built-in. This
device is used for on-board power
supplies in industrial control
equipment.
Features:
£ Input Voltage Range:
12.0 to 18.0V DC
£ Output: +24V, 100mA
(Output Power: 2.4W)
£ Thin Profile, Lightweight Design
£ Electrical Isolation Voltage
Between Input and Output:
2500 Vrms for 1 Minute
£ Built in Over-current Protection
Circuit
Application:
On-board power supplies such as
industrial equipment and control
equipment.
Outline Drawing and Circuit Diagram
Dimensions Inches Millimeters
A 1.3 33.0
B 0.945 24.0
C 0.71 18.0
D 1.0 25.4
E 0.22 5.5
F 0.53 13.5
G 0.18 4.5
H 0.10 2.54
J 0.18±0.06 4.5±1.5
K 0.02+0.004/-0.002 0.5+0.1/-0.05
L 0.01+0.01/-0.002 0.25+0.2/-0.05
Note: All dimensions listed are maximums except D.
111
A
D
B
J
G
HK
L
G
F
C
E
+VIN
–VIN
8
9
10
+VO1
+VO2
3.3kΩ
VZ =
8.2V
-VO
XXXX
15242
FILTER FILTER
DRIVE
CIRCUIT
CONSTANT
VOLTAGE
CIRCUIT
OVER-CURRENT
PROTECTION
OPTOCOUPLER
11
3
1
2
9
10
IO
VIN
C1
C1 : 100µF 50V (low impedance)
C2 : 47µF 50V (low impedance)
C2 +
2
+VLA106-15242 LOAD
3 A
V
V
8
11 1
Test Circuit Diagram
VLA106-15242
Isolated DC/DC Converter
Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272
Rev. 01/102
Absolute Maximum Ratings, Ta = 25°C unless otherwise specied
Characteristics Symbol VLA106-15242 Units
Input Voltage (Between Pins 8, 9, and 10, 11) VIN 18 Volts
Output Current (Between Pins 3 and 1) IO 100 mA
Operating Temperature (No Condensation)* T
opr -20 ~ 70 °C
Storage Temperature (No Condensation) Tstg -20 to 85 °C
Input-Output Isolation Voltage (AC, 1 Minute) VISO 2500 Vrms
*Please refer to derating characteristics.
Electrical and Mechanical Characteristics, Ta = 25°C, VIN = 24V unless otherwise specied
Characteristics Symbol Test Conditions Min. Typ. Max. Units
Input Voltage VIN Recommended Range 12 15 18 Volts
Output Voltage 1 VO1 Between Pins 3 and 1, IO = 0 ~ 100mA 22.8 24.0 25.2 Volts
Output Voltage 2 VO2 Between Pins 2 and 1, 7.79 8.2 8.61 Volts
Between Pins 3 and 2 : No Load
Input Regulation Reg-I Between Pins 3 and 1, — — 50 mV
I
O = 100mA, VIN = 12.0 ~ 18.0V
Load Regulation Reg-L Between Pins 3 and 1, IO = 0 ~ 100mA — — 50 mV
Ripple Voltage VP-P Between Pins 3 and 1, IO = 100mA — — 150 mV
Efficiency h Between Pins 3 and 1, IO = 100mA — 75 — %
OUTPUT CURRENT, IO, (mA)
EFFICIENCY, h, (%)
EFFICIENCY VS. OUTPUT CURRENT
CHARACTERISTICS
100
0306090 180150120
80
60
40
20
0
OUTPUT CURRENT, IO, (mA)
OUTPUT VOLTAGE, VO, (VOLTS)
OUTPUT VOLTAGE VS. OUTPUT CURRENT
CHARACTERISTICS
32
08040 6020 180120 160140100
12
16
20
24
28
8
4
0
INPUT VOLTAGE, VIN, (VOLTS)
EFFICIENCY, h, (%)
EFFICIENCY VS. INPUT VOLTAGE
CHARACTERISTICS
10 12 14 16 18 20
100
80
60
40
20
0
VIN = 15V
Ta = 25°C
VIN = 15V
Ta = 25°C
Io = 100mA
Ta = 25°C
04812162004812 16 20
32
16
20
24
28
12
8
4
0
Io = 100mA
Ta = 25°C
INPUT VOLTAGE, VIN, (VOLTS)
OUTPUT VOLTAGE, VO, (VOLTS)
OUTPUT VOLTAGE VS. INPUT VOLTAGE
CHARACTERISTICS
INPUT VOLTAGE, VIN, (VOLTS)
INPUT CURRENT, IIN, (mA)
INPUT CURRENT VS. INPUT VOLTAGE
CHARACTERISTICS
600
400
500
300
200
100
0
Io = 100mA
Ta = 25°C
AMBIENT TEMPERATURE, (°C)
OUTPUT CURRENT, IO, (mA)
DERATING
CHARACTERISTICS
140
-10 3010 11050 70 90
120
100
80
60
40
20
0