Switching frequency 300 KHz, typ
Approvals and standard (Note 5) IEC60950, UL60950, EN60950
Case material Open with Aluminum base-plate
Weight 50g (1.76 oz)
MTBF
Bellcore TR-NWT-000332, Tc=40, Io=80% , m a x .
3 x 10
6
hrs
ENVIRO NMENTAL SPECIFICATIONS
Operating base-plate temperature range (Note 6) -40ºC to +100ºC
Over temperature protection 110ºC
Humidity max, Non-condensing 95%
Storage temperature range -55ºC to +125ºC
Thermal shock MIL-STD-810D
Vibration 10~55Hz, 2G, 3minutes period, 30minutes along X,Y and Z
EMC CHARACTERISTICS
Conducted emissions
EN55022 (Note 7)
EN55022 (Note 7)
Level A
Level B
Radiated emissions
EN55022 Level A
ESD
Radiated immunity
Fast transient
Surge
Conducted immunity
EN61000-4-2
EN61000-4-3
EN61000-4-4
EN61000-4-5
EN61000-4-6
Perf. Criteria2
Perf. Criteria2
Perf. Criteria2
Perf. Criteria2
Perf. Criteria2
OUTPUT SPECIFICATIONS
Output power 50 Watts max
Voltage accuracy Full load and nominal Vin ± 1.5%
Voltage adjustability (Note 1) + 10% , -20%
Minimum load
0%
Line regulation LL to HL at FL
See table
Load regulation 0% to 100% FL
See table
Remote sense (Note 1) 10% of Vout
Ripple and noise(Note 2)
20MHz bandwidth
100mVp-p
Temperature coefficient
0.02% / ºC, max
Transient response
recovery time
25% load step change 200uS
Over voltage protection threshold (Hiccup)
115% ~ 130% of Vout
Over current protection threshold 110% ~ 140% of Iout Rated
Short circuit protection Hiccup, automatics recovery
INPUT SPECIFICATIONS
Input voltage range
24V input
48V input
18 – 36VDC
36 – 75VDC
UVLO start-up voltage
24V input
48V input
17V typ.
34V typ.
UVLO shuntdown voltage
24V input
48V input
15V typ.
32V typ.
Input filter (Note 3)
L-C type
Input voltage variation
dv/dt
5V/ms,max
(Complies with ETS300 132 part 4.4)
Input surge voltage 100mS max
24V input
48V input
50VDC
100VDC
Start up time
Nominal Vin and constant
resistive load
25mS typ.
Input reflected-ripple current
(5Hz to 20 MHz, 12uH source impedance)
24V input
48V input
50mAp-p
20mAp-p
Remote ON/OFF(Note 4)
(Positive logic)
(Negative logic)
ON=Open or 3.5V < Vr < 15V, I
IN
=50 max.
OFF=Short or 0V < Vr < 1.2V, I
IN
=1m max.
ON=Short or 0V < Vr < 1.2V, I
IN
=1m max.
OFF=Open or 3.5V < Vr < 15V, IIN=50 max.
• SINGLE OUTPUT UP TO 15A
• INDUSTRY STANDARD FOOTPRINT
• ADJUSTABLE OUTPUT VOLTAGE
• NO MINIMUM LOAD
• UNDER-VOLTAGE LOCKOUT
• HIGH EFFICIENCY UP TO 91%
• COMPACT 2.40 X 2.28 X 0.50 INCH PACKAGE
• FIXED SWITCHING FREQUENCY
• HALT TESTED
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. Remote sense and
remote on/off facilities are included as standard, and the converters are
comprehensively protected against over-current, over-voltage and over-temperature
conditions. The HEC50 converters are especially suited to telecom, networking and
industrial application.
TECHNICAL SPECIFICATION All specifications are typical at nominal input, full load and 25ºC otherwise noted
UL E193009
TUV R50020744
CB JPTUV-5363
CE MARK