OUTPUT SPECIFICATIONS
Output power
75 Watts max
Voltage accuracy Full load and nominal Vin
± 1.5%
Voltage adjustability
Single (Note 1)
Dual
+ 10% , -20%
+ 10% , -10%
Minimum load
0%
Line regulation LL to HL at FL
See table
Load regulation 0% to 100% FL
See table
Remote sense Single (Note 1)
10% of Vout
Ripple and noise 20MHz bandwidth (Note 2)
100mVp-p
Temperature coefficient
I
0.02% / ºC, max
Transient response recovery time
25% load step change
200uS
Over voltage protection threshold
(Non-latching Hiccup)
115% ~ 130% of Vout
Maximum total output current
I
1
+
I
2
Dual
15A
Over current protection threshold
110% ~ 140% of Iout Rated
Short circuit protection
Hiccup, automatics recovery
INPUT SPECIFICATIONS
Input voltage range
36 – 75VDC
UVLO start-up voltage
34V
typ.
UVLO shuntdown voltage
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
100VDC
Start up time
Nominal Vin and constant resistive load
25mS typ.
Input reflected-ripple current
(5Hz to 20MHz, 12uH source impedance)
20mAp-p
Remote ON/OFF(Note4)
(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, I
IN
=50
max.
GENERAL SPECIFICATIONS
Efficiency
See table
Isolation voltage
Input to Output
Input to Case
Output to Case
1600 VDC, min.
1000 VDC, min.
1000 VDC, min.
Isolation resistance
10
7
ohms, min
Isolation capacitance
2500 pF, max
Switching frequency
300 KHz, typ
Approvals and standard (Note 5)
IEC60950, UL60950, EN60950
Case material
Open with Aluminum base-plate
Weight
Single
Dual
53g (1.87oz)
57g (2.01oz)
MTBF (Note 6)
Single
Dual
2 x 10
6
hrs
1.3 x 10
6
hrs
ENVIRONMENTAL SPECIFICATIONS
Operating base-plate temperature range (Note 7)
-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 8)
EN55022 (Note 8)
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
•
SINGLE OUTPUT UP TO 20A
DUAL OUTPUTS TOTAL CURRENT UP TO 15A
UP TO 100% LOAD IMBALANCE
•
INDUSTRY STANDARD FOOTPRINT
•
ADJUSTABLE OUTPUT VOLTAGE,
INDEPENDENTLY REGULATED OUTPUTS
•
NO MINIMUM LOAD
•
HIGH EFFICIENCY UP TO 90%
•
COMPACT 2.40 X 2.28 X 0.50 INCH PACKAGE
•
HALT TESTED
HEC75-SERIES DC/DC converters provide up to 75 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 20A current rating (15A for dual output). 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
HEC75 converters are especially suited to telecom, networking and industrial
application.
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
UL E193009
TUV R50020744
CB JPTUV-5363
CE MARK
Mechanical Drawing
Single Output
Single Output
Model
Number
Input
Range
Output
Voltage
Output
Current
Line
Regulation
Load
Regulation
Input
Current
(9)
Eff
(10)
(%)
HEC75-48S1P8
36 – 75 VDC
1.8 VDC
20 A
4 mV
6 mV
0.915 A
86
HEC75-48S2P5
36 – 75 VDC
2.5 VDC
20 A
5 mV
8 mV
1.255 A
88
HEC75-48S3P3
36 – 75 VDC
3.3 VDC
20 A
7 mV
10 mV
1.618 A
90
HEC75-48S05
36 – 75 VDC
5.0 VDC
15 A
10 mV
15 mV
1.838 A
90
HEC75-48S15
36 – 75 VDC
15 VDC
5 A
30 mV
45 mV
1.860 A
90
Dual Output
Output Voltage
Output Current
Model Number
Input Range
V1 V2
I
1
I
2
Line
Regulation
Load
Regulation
Eff
(10)
(%)
HEC75-48D3305
36 – 75 VDC
5 VDC
3.3 VDC
15 A
15 A
7/10 mV
10/15 mV
88
HEC75-48D3325
36 – 75 VDC
3.3 VDC
2.5 VDC
15 A
15 A
7/5 mV
10/8 mV
81
HEC75-48D0518
36 – 75 VDC
5 VDC
1.8 VDC
15 A
15 A
10/4 mV
15/6 mV
85
HEC75-48D3318
36 – 75 VDC
3.3 VDC
1.8 VDC
15 A
15 A
7/4 mV
10/6 mV
81
Note
1. Maximum output deviation is 10% inclusive of remote sense. If remote sense is not being used, the +V sense should be connected to its corresponding
+OUTPUT and likewise the- sense should be connected to its corresponding –OUTPUT.
2. Measured with a 1uF M/C and a 10uF M/C(for dual outputs) or 1uF M/C and a 10uF T/C(for single outputs).
3. 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, 220 F/100V, ESR 90m .
4. The negative / positive logic and length are optional ( see table ). The pin voltage is referenced to negative input.
5. Dual output safety approvals pending.
6. BELLCORE TR-NWT-000332. Case I: 50% Stress, Temperature at Tc=40ºC. (Ground fixed and controlled environment)
7. Heat sink is optional and P/N: 7G-0021, 7G-0022, 7G-0023,
7G-0024
.
8. The HEC75 meets level A and level B conducted emissions only with external components connected before the input pin to the converter.
9. Maximum value at nominal input voltage and full load.
10. Single
Typical value at nominal input voltage and full load.
Dual
The efficiency test condition: Nominal input voltage and both outputs current are 7.5A.
11. BASEPLATE GROUNDING
Base-plate should be grounded at one of the four screw bolts prior to operation.
12. The converter is provided by basic insulation.
( Note 11 )
Dual Output
PRODUCT OPTIONS TABLE
Option Suffix
Negative remote ON/OFF logic, 0.20” pin length (standard)
-
Negative remote ON/OFF logic, 0.145” pin length
-L
Negative remote ON/OFF logic, 0.11” pin length
-K
Positive remote ON/OFF logic, 0.20” pin length
-P
Positive remote ON/OFF logic, 0.145” pin length
-S
Positive remote ON/OFF logic, 0.11” pin length
-M
PRODUCT OPTIONS TABLE
Option Suffix
Positive remote ON/OFF logic, 0.20” pin length (standard)
-
Positive remote ON/OFF logic, 0.145” pin length
-L
Positive remote ON/OFF logic, 0.11” pin length
-K
Negative remote ON/OFF logic, 0.20” pin length
-N
Negative remote ON/OFF logic, 0.145” pin length
-S
Negative remote ON/OFF logic, 0.11” pin length
-M
PIN CONNECTION
PIN
Define
1
- INPUT
2
CASE
3
CTRL
4
+ INPUT
5
- OUTPUT
6
- SENSE
Diameter
0.04 Inches
0.04 Inches
0.04 Inches
0.04 Inches
0.08 Inches
0.04 Inches
7
TRIM
0.04 Inches
8
+ SENSE
0.04 Inches
9
+ OUTPUT
0.08 Inches
Output can be externally trimmed by
using the method shown below.
EXTERNAL OUTPUT TRIMMING
7
8
TRIM UP
R
U
6
7
TRIM DOWN
R
D
Output can be externally trimmed by
using the method shown below.
( ) for V2 output trim
EXTERNAL OUTPUT TRIMMING
10(7)
8(5)
TRIM DOWN
R
D
9(6)
10(7)
TRIM UP
R
U
PIN CONNECTION
PIN
Define
1
- INPUT
2
CASE
3
CTRL
4
+ INPUT
5
+ V2
6
-V2 (COM)
Diameter
0.04 Inches
0.04 Inches
0.04 Inches
0.04 Inches
0.04 Inches
0.04 Inches
7
V2 TRIM
0.04 Inches
8
+V1
0.04 Inches
9
+V1 (COM)
0.04 Inches
10
V1 TRIM
0.04 Inches
( Note 11 )
Example
HEC75-48S3P3-P
Example
HEC75-48D3305-N