FEATURES
• 50 WATTS MAXIMUM OUTPUT POWER
• SINGLE OUTPUT UP TO 15A
• COMPACT 2.40 X 2.28 X 0.50 INCH PACKAGE
• HIGH EFFICIENCY UP TO 91%
• INPUT RANGE FROM 18VDC TO 36VDC AND 36VDC TO 75VDC
• FIXED SWITCHING FREQUENCY(300KHz)
• HALT TESTED
• INDUSTRY STANDARD FOOTPRINT
• ADJUSTABLE OUTPUT VOLTAGE
• NO MINIMUM LOAD
• UNDER-VOLTAGE LOCKOUT
• INPUT TO OUTPUT ISOLATION (BASIC INSULATION)
• CE MARK MEETS 2006/95/EC, 93/68/EEC AND 2004/108/EC
• UL60950-1, EN60950-1 AND IEC60950-1 LICENSED
• ISO9001 CERTIFIED MANUFACTURING FACILITIES
• COMPLIANT TO RoHS EU DIRECTIVE 2002/95/EC
APPLICATIONS
Wireless Network
OPTIONS
Telecom/Datacom
Negative & Positive logic Remote on/off, Pin length
Industry Control System
Distributed Power Architectures
Semiconductor Equipment
DESCRIPTION
HEC50-S single output DC/DC converters provide up to 50 watts of output power
in an industry standard half-brick package and footprint. These units are
specifically designed to meet the power needs of low-voltage silicon. All models
feature a wide input range, trimmable output voltage and a 15A current rating.
T E C H N I C A L S P E C I F I C AT I O N All specifications are typical at nominal input, full load and 25ºC otherwise noted
OUTPUT SPECIFICATIONS
Output power
INPUT SPECIFICATIONS
24V nominal input
48V nominal input
18 – 36VDC
36 – 75VDC
L-C type
50VDC
100VDC
25mS, typ.
25mS, typ.
50mAp-p
20mAp-p
17VDC
50 Watts, max.
± 1.5%
Input voltage range
Input filter
Voltage accuracy
Minimum load
Full load and nominal Vin
0%
24V input
48V input
Power up
Voltage adjustability (Note 5)
+ 10% , -20% Input surge voltage 100mS max
Line regulation
Load regulation
LL to HL at Full Load
No load to Full load
See table
See table
Nominal Vin and
constant resistive load Remote ON/OFF
Start up time
24V input
48V input
24V input
48V input
24V input
48V input
Remote sense (Note 5)
10% of Vout
Input reflected ripple current
Start-up voltage
Ripple and noise (Note 6) 20MHz bandwidth
Temperature coefficient
Transient response recovery time 25% load step change
Over voltage protection threshold (Hiccup)
Over current protection threshold
Short circuit protection
100mVp-p
±0.02% / ºC, max.
200μS
34VDC
15VDC
32VDC
Shutdown voltage
115% ~ 130% of Vout
110% ~ 140% of Iout Rated
Hiccup, automatics recovery
Remote ON/OFF (Note 7)
(Negative logic)
ON=Short or 0V < Vr < 1.2V, IIN=1mA max.
OFF=Open or 3V < Vr < 15V, IIN=50μA max.
ON=Open or 3V < Vr < 15V, IIN=50μA max.
OFF=Short or 0V < Vr < 1.2V, IIN=1mA max.
GENERAL SPECIFICATIONS
Efficiency
(Positive logic)
See table
1600 VDC, min.
1000 VDC, min.
1000 VDC, min.
Input to Output
Input current of remote control pin
Remote off state input current
Nominal Vin
Nominal Vin
-0.5mA ~ 0.5mA
20mA
Isolation voltage
Input to Case
Output to Case
7
ENVIRONMENTAL SPECIFICATIONS
Isolation resistance
10 ohms, min.
-40ºC to +100ºC
(with derating)
Isolation capacitance
Switching frequency
Approvals and standard
Case material
2500 pF, max.
300 KHz, typ.
Operating base-plate temperature range (Note 8)
Over temperature protection
Humidity max, Non-condensing
Storage temperature range
Thermal shock
110ºC
95%
IEC60950-1, UL60950-1, EN60950-1
Open with Aluminum base-plate
50g (1.76oz)
-55ºC to +125ºC
MIL-STD-810F
MIL-STD-810F
Weight
BELLCORE TR-NWT-000332
MIL-HDBK-217F
3.000 x 106 hrs
2.560 x 105 hrs
MTBF (Note 1)
Vibration
EMC CHARACTERISTICS
EMI (Note 9)
EN55022
Class A
Radiated immunity
EN61000-4-3
10 V/m Perf. Criteria A
± 2KV
± 1KV
Fast transient (Note 10) EN61000-4-4
Perf. Criteria B
Perf. Criteria B
Surge (Note 10)
EN61000-4-5
EN61000-4-6
Conducted immunity
10 Vr.m.s Perf. Criteria A
Page 1 of 3 Issued Date：2008/05/21
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