PDUKE SDC20-48S05, SDC20-48S12, SDC20-48S15, SDC20-48S2P0, SDC20-48S3P3 Datasheet
A
• 20 WATTS MAXIMUM OUTPUT PO WER
• 2:1 WIDE INPUT VOLTAGE RANGE
• INTERNATION AL SAFE TY STANDARD APPROVAL
• SIX-SIDED CONTINUOUS SHIELD
• HIGH EFFICIENCY UP TO 88%
• SMD TYPE 1.95” X 1.19” X 0.38” PACKAGE
• FIXED SWITCHING FREQUENCY
• PATENT
UL E193009
TUV R50011065
CB JPTUV-003967
CE MARK
The SDC20 series offer 20 watts of output power from a 1.95 x 1.19 x 0.38 inch
SMD type package. The SDC20 series with 2:1 wide input voltage of 36-75VDC
and features 1600VDC of isolation, short-circuit and over-voltage protection, as
well as six sided shielding. All models are particularly suited to telecommunications,
industrial, mobile telecom and test equipment applications.
TECHNICAL SPECIFICATION All specifications are typical at nominal input, full load and 25ºC otherwise noted
OUTPUT SPECIFICATIONS
Output power 20 Watts max
Voltage accuracy Full load and nominal Vin ± 1%
Voltage adjustability
Minimum load
Line regulation LL to HL at Full Load
Load regulation 10% to 100% FL
Ripple and noise
Temperature coefficient
Transient response recovery time 25% load step change 300uS
Over voltage
Zener diode clamp
Over load protection % of FL at nominal input 150% max
Short circuit protection Hiccup, a utomatics re co very
20MHz bandwidth
(Measured with 104pF/50V MLCC)
0.02% / ºC, max
2.0V output
3.3V output
5V output
12V output
15V output
± 10%
0%
± 0.2%
± 0.5%
See table
3.9V
3.9V
6.2V
15V
18V
INPUT SPECIFICATIONS
Input voltage range 48V nominal input 36 – 75VDC
Input voltage lockout
Input filter(Note 1) L-C type
Input voltage variation dv/dt
Input surge voltage
100mS max
Input reflected ripple (Note 2) Nominal Vin and full load 25mAp-p
Start up time Nominal Vin and constant resistor load 25mS
Remote ON/OFF (Note 3)
Remote off input current
DC-DC ON
DC-DC OFF
(Complies with ETS300 132 part 4.4)
48V input 100VDC
DC-DC ON
DC-DC OFF
Nominal Vin
Open or 3.5V < Vr < 12V
Short or 0V < Vr < 1.2V
36VDC
33VDC
5V/ms,max
2.5mA
GENERAL SPECIFICATIONS
Efficiency See table
Isolation voltage 1600VDC, min
Isolation resistance
Isolation capacitance 500pF, max
Switching frequency 300KHz, typ
pprovals and standard IEC60950, UL1950, EN60950
Potting material Epoxy (UL94-V0)
Dimensions
Weight 32.5g (1.15oz)
MTBF (Note 4) 1.632 x 106 hrs
1.95 X 1.19 X 0.38 Inch
(49.5 X 30.2 X 9.7 mm)
109ohms, min
ENVIRONMENTAL SPECIFICATIONS
Operating temperature range -40ºC ~ +85ºC (with derating)
Maximum ca se temperature +100ºC
Storage temperature range -55ºC ~ +105ºC
Thermal impedance Nature convection 14ºC/Watt
Thermal shock MIL-STD-810D
Vibration 10~55Hz, 2G, 30minutes along X,Y and Z
Relative humidity 5% to 95% RH
EMC CHARACTERISTICS
Conducted emissions EN55022 Level A
Radiated emissions EN55022 Level A
ESD EN61000-4-2 Perf. Criteria2
Radiated immunity EN61000-4-3 Perf. Criteria2
Fast transient EN61000-4-4 Perf. Criteria2
Surge EN61000-4-5 Perf. Criteria2
Conducted immunity EN61000-4-6 Perf. Criteria2
(7)
(8)
p
Model
Number
SDC20-48S2P0 36 – 75 VDC 2.0 VDC 4000mA 50mV 214mA 82 17000uF
SDC20-48S3P3 36 – 75 VDC 3.3 VDC 4000mA 50mV 344mA 84 10300uF
SDC20-48S05 36 – 75 VDC 5.0 VDC 4000mA 75mV 496mA 88 6800uF
SDC20-48S12 36 – 75 VDC 12.0 VDC 1670mA 75mV 497mA 88 1200uF
SDC20-48S15 36 – 75 VDC 15.0 VDC 1330mA 75mV 503mA 87 750uF
Note
1. An external filter capacitor is required for normal operation. The capacitor should be capable of handing 1A ripple current for 48V models. Power
mate suggest: Nippon chemi-con KMF series, 220F/100V, ESR 90m.
2. Simulated source impedance of 12uH. 12uH inductor on series with +Vin.
3. The ON/OFF control pin voltage is referenced to negative input.
4. BELLCORE TR-NWT-000332. Case I: 50% Stress, Temperature at 40ºC. (Ground fixed and controlled environment)
5. Test condition: nominal input and full load.
6. Maximum value at nominal input voltage and full load.
7. Typical value at nominal input voltage and full load.
8. Test by minimum Vin and constant resistor load.
Input
Range
1.95(49.5)
Output
Voltage
Output
Current
RIPPLE &
NOISE
(5)
Input
Current
(6)
0.01(0.25)
Eff
(%)
Capacitor
Load max
12 7
0.382
TOP VIEW
1.19(30.2)
1
6
(9.7)
0.068(1.75)
1.88(47.8)
1. All dimensions in Inches (mm)
2. Pin Pitch tolerance 0.014(0.35)
0.06(1.52)
0.07(1.8)
DIA 0.05(1.27)
X 2
PIN
1
2
3
4
5
6
0.47
(12.1)
BOTTOM VIEW
0.12(3.2)
0.32(8.2)
0.52(13.3)
1.32(33.6)
1.52(38.7)
1.72(43.8)
DIP PIN CONNECTION
DEFINE
+ OUTPUT
- OUTPUT
NC
TRIM
NC
NC
PIN
12
11
10
9
8
7
0.10(2.54)
DEFINE
+ INPUT
- INPUT
NC
SYNC
ON-OFF CTRL
NC
1.39(35.3)
12
0.787(20.0) 0.55(14.0)
1
SDC20-48S05 Derating Curve
100
75
50
25
OUTPUT POWER (%)
0
Nature convection
AMBIENT TEM PE RATURE (ºC)
0.13(3.3)
0.80(20.3)
1.20(30.5)
1.60(40.6)
1.81(46.0)
50 60 70 80 90
0.11(2.8)
1.45(36.8)
0.063(1.6) Dip Hole
Required for guide
2
100 -40 -25 0 -10
lace.
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