Beta Dyne, Inc. · 110 Elm St, Unit 12 · Bridgewater, MA 02324 · Phone 508-697-1993 · Fax 508-697-2045 · www.beta-dyne.com
beta
dyne
10W HIGH-VOLTAGE
DC/DC CONVERTER
Output Ranges, 5V to 240Vdc
10W HIGH-VOLTAGE DC/DC CONVERTER DCDC10_DS_REV09.PDF SHEET 1 OF 6
PWM
RECTIFIER
&
FILTER
ERROR
OPAM
3
2
1
P TRANSFORMER 4
5
6
7
8
AUX
+
MAIN
-
+
-
V ADJ
OUT
+V
ON/OFF
IN
IN
-V
1
2
310S120/48
MADE IN USA
8
7
6
5
4
beta
dyne
R
US
C
Functional Description Applications This family of 10W DC/DC converters is specifically designed
for telecommunications applications including xDSL remote
power feed. These modules accept wide input voltage ranges
with nominal inputs of 24, 48 and 120Vdc. Outputs can be single
or dual and can be set as two independent adjustable outputs
from 5Vdc to 120Vdc. Additional features include total input to
output isolation, short circuit and thermal protection, soft start,
adjustable outputs, hot pluggability and efficiency up to 84%.
Key Features
• Efficiency up to 84%
• Input to output isolation
• Soft start
• Hot pluggable
• Short circuit and thermal protection
• Adjustable outputs
• 50µA off-state current
• Wide input voltage range (2:1)
(4:1) available upon request
Telecom
DSL Systems
Remote Feed Systems
Battery Power Systems
Typical Block Diagram
Beta Dyne, Inc. · 110 Elm St, Unit 12 · Bridgewater, MA 02324 · Phone 508-697-1993 · Fax 508-697-2045 · www.beta-dyne.com
10W HIGH-VOLTAGE DC/DC CONVERTER DCDC10_DS_REV09.PDF SHEET 2 OF 6
INPUTS
Input Voltage Range (2:1) See Model Selection Guide
(Contact factory for other input ranges)
Input Filter RC, See Note 2
Reflected Ripple Current See Model Selection Guide
Reverse Voltage Protection Parallel Diode 5 A
On/Off Reference to -VIN
Voltage Open 10 V
Unit On Open
Unit Off Short to -VIN
Off State Current Pin 2 short to Pin 3 50 120 µA
Turn On Delay Including soft start 7 10 15 mS
Startup Input Voltage 11 16 V
PARAMETER CONDITIONS / NOTES MIN TYP MAX UNITS
Electrical Specifications
ABSOLUTE MAXIMUM RA TINGS
OUTPUTS
PARAMETER CONDITIONS / NOTES MIN TYP MAX UNITS
Voltage and Current Ratings See Model Selection Guide
Output Voltage Accuracy ±1 %
Voltage Balance (Dual Outputs) Equally loaded outputs ±1 %
Ripple & Noise (20MHz BW) ±1 %
Line Regulation ±1 %
Load Regulation ±1 %
Temperature Coefficient @ FL ±0.02 %/°C
Short Circuit Protection Continuous, Current Limit
Short Circuit Restart Automatic
Transient Response (to within 1% of VOUT) 50% FL to 100% FL to 50% FL 50 µS
For Dual Independent Output Balance, With balanced loads 5 %
Load or Line Regulation
Efficiency See Model Selection Guide
Isolation Voltage (1 min) 500 1000 Vdc
Isolation Resistance 109 Ω
Isolation Capacitance 300 pF
Switching Frequency 108 125 130 kHz
PARAMETER CONDITIONS / NOTES MIN TYP MAX UNITS
GENERAL SPECIFICATIONS
Operating Temperature Range (Ambient) (for -55°C to 85°C, please contact factory) -40 +75 °C
Storage Temperature Range -60 +105 °C
Derating None required
Humidity Up to 95%, Non-condensing
Cooling Free-air convection
MTBF per MIL-HNBK-217F (Ground benign, +25°) 1.1×106hours
PARAMETER CONDITIONS / NOTES MIN TYP MAX UNITS
ENVIRONMENT AL SPECIFICA TIONS
Size 1×2×0.395in. (25.4×50.8×10.03mm)
Weight 1.04oz. (30g)
Case Material Blue coated metal
Shielding Six-sided continuous
Case Connection 24VIN models to -Input; 48VIN, 120VIN models to +Input
PARAMETER CONDITIONS / NOTES MIN TYP MAX UNITS
PHYSICAL CHARACTERISTICS
Input Voltage 175% of Nominal Input Line
Output Short Circuit Duration Continuous
Internal Power Dissipation 3.4 W
PARAMETER CONDITIONS / NOTES MIN TYP MAX UNITS
Unless otherwise specified, all parameters are given under typical +25°C
with nominal input voltage and under full output load conditions.
Beta Dyne, Inc. · 110 Elm St, Unit 12 · Bridgewater, MA 02324 · Phone 508-697-1993 · Fax 508-697-2045 · www.beta-dyne.com
10W HIGH-VOLTAGE DC/DC CONVERTER DCDC10_DS_REV09.PDF SHEET 3 OF 6
Voltage (Vdc) Current (mA) Reflected Voltage Current Efficiency
Nominal Range No-load Full-load** Ripple (mAPP) (Vdc) (mA) Full load (%)
5S2.5/24 24 18-36 10 280 80 2.5 2000 74
5S3.3/24 24 18-36 10 280 80 3.3 1500 74
5S5/24 24 18-36 10 275 80 5 1000 74
5S12/24 24 18-36 10 280 80 12 420 74
5S15/24 24 18-36 10 280 80 15 330 74
5S120/24 24 18-36 10 270 80 120 42 78
10S2.5/48 48 36-72 5 278 90 2.5 4000 78
10S3.3/48 48 36-72 5 278 90 3.3 3030 78
10S5/48 48 36-72 5 260 90 5 2000 80
10S12/48 48 36-72 5 278 90 12 840 78
10S15/48 48 36-72 5 270 90 15 660 78
10S120/48 48 36-72 5 245 90 120 84 84
10S2.5/120 120 75-140 5 108 100 2.5 4000 77
10S3.3/120 120 75-140 5 108 100 3.3 3030 77
10S5/120 120 75-140 5 108 100 5 2000 77
10S12/120 120 75-141 5 106 100 12 840 78
10S15/120 120 75-142 5 106 100 15 660 78
5D5/24 * 24 18-36 10 275 80 ± 5 ± 500 74
5D12/24 * 24 18-36 10 280 80 ± 12 ± 210 72
5D15/24 * 24 18-36 10 280 80 ± 15 ± 165 74
5D120/24 * 24 18-36 10 280 80 ± 120 ± 21 78
10D5/48 * 48 36-72 5 260 80 ± 5 ± 1000 80
10D12/48 * 48 36-72 5 278 90 ± 12 ± 420 75
10D15/48 * 48 36-72 5 270 90 ± 15 ± 165 87
10D120/48 48 36-72 10 245 90 ± 120 ± 42 84
10D5/120 * 120 75-140 5 108 100 ± 5 ± 1000 77
10D12/120 * 120 75-140 5 108 100 ± 12 ± 420 78
10D15/120 * 120 75-140 5 106 100 ± 15 ± 165 78
MODEL NUMBER INPUT OUTPUT
Model Selection Guide
ORDERING GUIDE
* NOTE: For dual independent outputs, insert an I after the last digit.
Independent Outputs
Input Power
Output Voltage
# of Outputs
Power
_ _ S _ _ _ / _ _ - I
The maximum input current at any given input range measured at minimum input voltage is given as 1.6*INOMINAL. Nominal input current is the
typical value measured at the input of the converter under full-load room temperature and nominal input voltage (24, 48 and 120Vdc).
** NOTE 1
Beta Dyne, Inc. · 110 Elm St, Unit 12 · Bridgewater, MA 02324 · Phone 508-697-1993 · Fax 508-697-2045 · www.beta-dyne.com
10W HIGH-VOLTAGE DC/DC CONVERTER DCDC10_DS_REV09.PDF SHEET 4 OF 6
5V
+
-
48V
50K
2.4K
R1
R2
V ADJ
-V
-V +V
ON/OFF -V
+V +V
1
2
3
(BOTTOM VIEW)
IN
IN
4
5
6
7
8
AUX OUT
MAIN OUT
OUT
10D120/48I
DUAL INDEPENDENT OUTPUTS
RL
RL
+
-
+
-
120V AUX OUTPUT
120V MAIN OUTPUT
ON
5VOFF
0
+
-
24V
V ADJ
-
-V GND
ON/OFF GND
+V +
1
2
3
(BOTTOM VIEW)
IN
IN
4
5
6
7
8
OUT
5D120/24
DUAL
50K
R2
5V
2.4K
R1 RL
RL
-
120V
GND
120V
+
ON
5VOFF
0
V ADJ
-V
-V +V
ON/OFF -V
+V +V
1
2
3
BOTTOM VIEW
IN
IN
4
5
6
7
8
AUX OUT
MAIN OUT
OUT
10S120/48
SINGLE
5V
+
-
48V
50K
RL
+
-
V = 120V
OUT
2.4K
R1
R2
ON
5VOFF
0
BOTTOM VIE W
0.10 [2.54]
1.80 [45.72]
2.00 [50.80]
0.40
[10.16]
0.60
[15.24]
0.80
[20.32]
1.00
[25.40]
0.10
[2.54]
0.50
[12.70]
0.70
[17.78]
0.90
[22.86]
0.30
[7.62]
3
2
1
4
5
6
7
8
Ø0.040 [1.02] (8PL)
0.395 [10.03] MAX
0.10 [2.54] MIN
CASE
HEADER
FIGURE 3. Dual independent output connection diagram
FIGURE 2. Dual connection diagram
FIGURE 1. Single connection diagram
PIN ASSIGNMENT
1 -V Input
2 On/Off
3 +V Input
DIMENSIONS
in inches [mm]
Pin Function
4+V
OUT (Connect Pin 4 to 6) +VOUT +VOUT AUX
5-V
OUT (Connect Pin 5 to 7) GND (Connect Pin 5 to 6) GND Aux
6+V
OUT (Connect Pin 4 to 6) GND (Connect Pin 5 to 6) +VOUT MAIN
7-V
OUT (Connect Pin 5 to 7) -VOUT GND Main
8 VOUT ADJ VOUT ADJ VOUT ADJ
Single Output
(see Figure 1) Dual Independent Output
(see Figure 3)
Dual Output
(see Figure 2)
Beta Dyne, Inc. · 110 Elm St, Unit 12 · Bridgewater, MA 02324 · Phone 508-697-1993 · Fax 508-697-2045 · www.beta-dyne.com
10W HIGH-VOLTAGE DC/DC CONVERTER DCDC10_DS_REV09.PDF SHEET 5 OF 6
The RC input filter utilizes the RON of the series MOSFET transistor which is part of the hot pluggable circuit. The benefits of this RC
filters are the reduction of inrush current by approximately 27dB and reflected ripple attenuation by 8dB. The penalty for the hot
pluggability and the RC filter is 1% to 2% reduction of the converter ’s efficiency. See Figures 4 and 5.
FIGURE 4A. (CH2) 10W reflected ripple with hot pluggable circuit, VIN 36V
CH2 50mV 2.5µS
FIGURE 4B. (CH2) 10W reflected ripple without hot pluggable circuit
90mA peak-to-peak
CH1 100V 2.5µS
CH2 50mV 2.5µS
220mA peak-to-peak
NOTE 2
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Beta Dyne, Inc. · 110 Elm St, Unit 12 · Bridgewater, MA 02324 · Phone 508-697-1993 · Fax 508-697-2045 · www.beta-dyne.com
10W HIGH-VOLTAGE DC/DC CONVERTER DCDC10_DS_REV09.PDF SHEET 6 OF 6
FIGURE 5A. (CH1) Inrush current without hot pluggable circuit ON
VIN 48V, Current spike duration 5µS
FIGURE 5B. (CH1) Inrush current with hot pluggable circuit ON
16.8A
CH1 2V 500µS
CH2 10V 500µS
0.8A
VOUT
VOUT
CH1 2V 500µS
CH2 10V 500µS
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