• 1.5V, 1.8V, 2.5V, 3.3V, 5V, 12V, 15VDC OUTPUT
• OUTPUT CURRENT UP TO 6A
• 20 WATTS MAXIMUM OUTPUT POWER
• 2:1 WIDE INPUT VOLTAGE RANGE
• SAFETY APPROVAL PENDING
• SIX-SIDED CONTINUOUS SHIELD
• HIGH EFFICIENCY UP TO 89%
• STANDARD 2” x 1” x 0.4” PACKAGE
• FIXED SWITCHING FREQUENCY
UL E193009
TUV R50018446
CB JPTUV-005032
CE MARK
TECHNICAL SPECIFICATION All specifications are typical at nominal input, full load and 25ºC otherwise noted
The FED20 series offer 20 watts of output power from a 2 x 1 x 0.4 inch package .
The FED20 series with 2:1 wide input voltage of 18-36 and 36-75VDC and features
1600VDC of isolation, short-circuit and over-voltage protec ti on, as well as six sided
shielding. A safety approvals to EN60950 and UL1950. All models are particularly
suited to telecommunications, industrial, mobile telecom and test equipment
applications.
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 protection
Zener diode clamp
Over load protection % of FL at nominal input 150% typ
Short circuit protection Hiccup, automatics recovery
20MHz bandwidth
(Measured with a 104pF/50V MLCC)
1.5V output
1.8V output
2.5V output
3.3V output
5V output
12V output
15V output
0.02% / ºC, max
± 10%
± 0.2%
± 0.5%
75mVp-p
3.9V
3.9V
3.9V
3.9V
6.2V
INPUT SPECIFICATIONS
Input voltage range
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 20mAp-p
Start up time Nominal Vin and constant resistor load 10mS typ
Remote ON/OFF (Note 3)
Remote off input current
24V nominal input
48V nominal input
(Complies with ETS300 132 part 4.4)
24V input
48V input
DC-DC ON
DC-DC OFF
Nominal Vin
Open or 3.5V < Vr < 12V
Short or 0V < Vr < 1.2V
18 – 36VDC
36 – 75VDC
5V/ms,max
50VDC
100VDC
2.5mA
GENERAL SPECIFICATIO NS
Efficiency See table
Isolation voltage 1600VDC, min
Isolation resistance
0%
Isolation capacitance 1000pF, max
Switching frequency 500KHz, typ
pprovals and standard IEC60950, UL60950, EN60950
Case material Nickel-coated coppe
Base material Non-conductive black plastic
Potting material Epox y (UL94-V0)
Dimensions
Weight 27g (0.95oz)
MTBF (Note 4) 1.791 x 106 hrs
15V
ENVIRONMENTAL SPECIFICATIONS
18V
Operating temperature range -40ºC ~ +85ºC (with derating)
Maximum case temperature 100ºC
Storage temperature range -55ºC ~ +105ºC
Thermal impedance (Note 5)
Thermal shock MIL-STD-810D
Vibration 10~55Hz, 2G, 30minutes along X,Y and Z
Relative humidity 5% to 95% RH
Nature convection
Nature convection with heat-sink
2.00 X 1.00 X 0.40 Inch
(50.8 X 25.4 X 10.2 mm)
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
109ohms, min
12ºC/Watt
10ºC/Watt
Model
Number
FED20-24S1P5 18 – 36 VDC 1.5 VDC 6000mA 500mA 79 65000uF
FED20-24S1P8 18 – 36 VDC 1.8 VDC 6000mA 577mA 82 65000uF
FED20-24S2P5 18 – 36 VDC 2.5 VDC 6000mA 781mA 84 33000uF
FED20-24S3P3 18 – 36 VDC 3.3 VDC 5000mA 838mA 86 13000uF
FED20-24S05 18 – 36 VDC 5 VDC 4000mA 992mA 88 6800uF
FED20-24S12 18 – 36 VDC 12 VDC 1670mA 1006mA 87 2200uF
FED20-24S15 18 – 36 VDC 15 VDC 1330mA 1001mA 87 755uF
FED20-48S1P5 36 – 75 VDC 1.5 VDC 6000mA 247mA 80 65000uF
FED20-48S1P8 36 – 75 VDC 1.8 VDC 6000mA 285mA 83 65000uF
FED20-48S2P5 36 – 75 VDC 2.5 VDC 6000mA 386mA 85 33000uF
FED20-48S3P3 36 – 75 VDC 3.3 VDC 5000mA 414mA 87 13000uF
FED20-48S05 36 – 75 VDC 5 VDC 4000mA 490mA 89 6800uF
FED20-48S12 36 – 75 VDC 12 VDC 1670mA 497mA 88 2200uF
FED20-48S15 36 – 75 VDC 15 VDC 1330mA 500mA 87 755uF
Input
Range
Output
Voltage
Output
Current
Input
Current
(6)
(%)
Eff
Note
1. An external filter capacitor is required for normal operation. The capacitor should be
capable of handing 1A ripple current for 48V/24V 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 function. There are positive logic (standard) and negative logic
(option). The pin voltage is referenced to negative input
To order negative logic ON/OFF control add the suffix-N (Ex: FED20-24S05-N)
4. BELLCORE TR-NWT-000332. Case I: 50% Stress, Te mperature at 40ºC. (Ground fixed
and controlled environment).
5. Heat sink is optional and P/N: 7G-0020A.
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.
FED20-48S1P5
Deratin
100
75
Nature Convection
50
25
OUTPUT POWER (%)
0
AMBIENT TEM PERATUR E (º C )
FED20-48S1P5 (Note 5)
Deratin
100
75
Nature Convection
50
25
OUTPUT POWER (%)
0
AMBIENT TEM PERATUR E (ºC)
Curve without Heat-Sin
50 60 70 80 90
Curve with Heat-Sink
50 60 70 80 90
100 -40 -25 0 -10
100 -40 -25 0 -10
FED20-48S1P5
Efficiency VS Input voltage
82
81
80
79
78
77
76
75
EFFICIENCY (%)
74
73
72
INPUT VOLTAGE (V)
FED20-48S1P5
Efficiency VS Output load
81
80
79
78
77
76
74
72
EFFICIENCY (%)
70
65
60
OUTPUT LOAD (A)
50 55 60 65 70
3 4 5
2.00(50.8)
7536 4540
6 1 2
1.00(25.4)
0.50
(12.7)
0.40
0.40
(10.2)
(10.2)
3 4 5
1 2
1. All dimensions in Inches (mm)
2. Pin Pitch tolerance 0.014(0.35)
6
0.10(2.5)
0.20(5.1)
0.80(20.3) 0.60(15.2)
PIN CONNECTION
PIN DEFINE
1 + INPUT
2 - INPUT
3 + OUTP UT
4 TRIM
5 - OUTPUT
6 CTRL
EXTERN AL OUTPUT TRIMMING
Output can be externally trimmed by
using the method shown below.
TRIM UP
5
4
TRIM DOWN
4
RU
3
Capacitor
Load max
0.40
(10.2)
DIA. 0.04(1.0)
0.22(5.6)
RD