FEATURES
• 75 WATTS MAXIMUM OUTPUT POWER
• SINGLE : OUTPUT CURRENT UP TO 20A
DUAL : TOTAL OUTPUT CURRENT UP TO 15A;
UP TO 100% LOAD IMBALANCE
• COMPACT 2.40 X 2.28 X 0.50 INCH PACKAGE
• HIGH EFFICIENCY UP TO 90%
• INPUT RANGE FROM 36VDC TO 75VDC
• FIXED SWITCHING FREQENCY (300KHz)
• HALT TESTED
• INDUSTRY STANDARD FOOTPRINT
• ADJUSTABLE OUTPUT VOLTAGE,
INDEPENDENTLY REGULATED OUTPUTS
• INPUT TO OUTPUT ISOLATION (BASIC INSULATION)
• CE MARK MEETS 2006/95/EC, 93/68/EEC AND 2004/108/EC
• SINGLE: UL60950-1, EN60950-1 AND IEC60950-1 LICENSED
• DUAL:DESIGN MEET UL60950-1, EN60950-1 AND IEC60950-1 LICENSED
• ISO9001 CERTIFIED MANUFACTURING FACILITIES
• COMPLIANT TO RoHS EU DIRECTIVE 2002/95/EC
APPLICATIONS
Wireless Network
Telecom/Datacom
OPTIONS
Remote on/off, Pin length
DESCRIPTION
HEC75-SERIES DC/DC converters provide up to 75 watts of output power in an
industry standard half-brick package and footprint. All models feature a wide input
range, trimmable output voltage and a 20A current rating (15A for dual output).
Industry Control System
Distributed Power Architectures
Semiconductor Equipment
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
INPUT SPECIFICATIONS
Output power
75 Watts, max. Input voltage range
36 – 75VDC
Voltage accuracy
Minimum load
Full load and nominal Vin
± 1.5% Input filter
L-C type
100VDC
0% Input surge voltage 100mS max
Single (Note 5)
Dual
+ 10% , -20%
+ 10% , -10%
Nominal Vin and
constant resistive load
Power up
Remote ON/OFF
25mS, typ.
25mS, typ.
Voltage adjustability
Start up time
Line regulation
Load regulation
Remote sense
LL to HL at FL
See table Input reflected-ripple current
See table Start-up voltage
20mAp-p
34VDC
32VDC
No Load to Full Load
Single (Note 5)
10% of Vout Shutdown voltage
Remote ON/OFF (Note 8)
(Negative logic)
Ripple and noise 20MHz bandwidth (Note 6)
Temperature coefficient
100mVp-p
±0.02% / ºC, max.
200μS
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.
Transient response recovery time 25% load step change
Over voltage protection threshold
(Non-latching Hiccup)
Maximum total output current I 1 + I 2 Dual
Over current protection threshold
Short circuit protection
(Positive logic)
115% ~ 130% of Vout
Input current of remote control pin
Remote off state input current
Nominal Vin
Nominal Vin
-0.5mA ~ 0.5mA
20mA
15A
110% ~ 140% of Iout Rated
Hiccup, automatics recovery
ENVIRONMENTAL SPECIFICATIONS
-40ºC to 100ºC
(with derating)
Operating base-plate temperature range (Note 9)
GENERAL SPECIFICATIONS
Efficiency
Over temperature protection
Humidity max, Non-condensing
Storage temperature range
Thermal shock
110ºC
95%
See table
Input to Output
1600 VDC, min.
1000 VDC, min.
1000 VDC, min.
Isolation voltage
Input to Case
-55ºC to 125ºC
MIL-STD-810F
MIL-STD-810F
Output to Case
7
Isolation resistance
10 ohms, min.
Isolation capacitance
Switching frequency
Approvals and standard (Note 7)
Case material
2500 pF, max.
300 KHz, typ.
Vibration
EMC CHARACTERISTICS
IEC60950-1, UL60950-1, EN60950-1
Open with Aluminum base-plate
EMI (Note 10)
EN55022
Class A
Radiated immunity
EN61000-4-3
EN61000-4-4
EN61000-4-5
EN61000-4-6
10 V/m Perf. Criteria A
Single
Dual
63g (2.22oz)
70g (2.47oz)
Weight
± 2KV
± 1KV
Fast transient (Note 11)
1.300 x 105 hrs Surge (Note 11)
Perf. Criteria B
Perf. Criteria B
BELLCORE TR-NWT-000332 Single 2.000 x 106 hrs
Dual
MTBF (Note 1)
MIL-HDBK-217F
Single 2.170 x 105 hrs
Dual
1.080 x 105 hrs
Conducted immunity
10 Vr.m.s Perf. Criteria A
Page 1 of 4 Issued Date：2008/05/21
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