HEHB-60A-48V-2.5V
48V
in
60A
out
2.5V
out
High Efficiency, Isolated
Half Brick DC-DC Converter
Feat
t
ure
s
Fea ure
s
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Very high efficiency: 91% at 30A load, 88% at
full rated load current
Wide input voltage range (35 to 75Vdc)
Total weight: 80 grams (2.77 oz.) Open-Frame Version
Low profile, industry standard footprint and pinout:
2.3" x 2.4" x 0.44" (58.4mm x 61.0mm x 11.2mm)
Back Bias protection
Monolithic start-up, with pre-biased output
Parallel for increased power:
External Clock Synchronization (Option)
Current Share, Primary (Option)
Soft Start
Remote ON/OFF
Output voltage trim – Industry standard trim equation
Remote sense
Fixed Switching Frequency
(Output ripple frequency @ 420 KHz)
Under voltage lockout (UVLO), Input – auto recover
Over voltage protection – auto recover
Over current protection – auto recover
Over temperature protection – auto recover
Operating temperature range: -40°C to +100°C
Input to Output Isolation at 2000Vdc, 10MΩ
Pending- UL/
C
UL, CSA/CSA
US
, TUV and KEMA
ISO 9001 Certified manufacturing processes
Product
t
Hi
i
ghl
l
i
i
ght
t
s
Produc H gh gh s
•
•
HEHB Family of dc-dc converters is
Magnetek’s solution for next generation,
cutting-edge board applications.
Synchronous rectification uses MOSFET
instead of Schottky diodes providing
extreme reduction in heat generation,
boosting efficiency, eliminating the need for
a heat sink and increased reliability.
Low profile (0.44”), open frame construction
allows smaller card pitch and improves
system ventilation.
Fixed switching frequency provides
predictable EMI characteristics.
•
•
P/N 7A0115WLXXX
Prel
l
i
i
mi
i
nary
Pre m nary
DS HEHB 60A 48V 2.5V 7A01 Rev.01-07-03.doc– page
1
–
Magnetek PEG web site, www.magnetekpower.com
Mechani
i
cal
l
Dr
r
awi
i
ngs
Mechan ca D aw ngs
HEHB–60A–48V–2.5V
- All dimensions are in inches (mm)
Tolerances: x.xx in. +/-0.2 in. (0.5mm)
PINOUT Description
Pin
1
2
A
3
4
5
6
7
8
9
Name
Vin (-)
(No Pin)
(No Pin)
ON/OFF
Vin (+)
Vout (+)
Sense (+)
TRIM
Sense (-)
Vout (-)
Function
Negative terminal for the input bus
Optional Current Share, -F Only
Optional Clock Sync, -F Only
Remote Enable/Disable terminal, input signal TTL
Positive terminal for the input bus
Positive terminal for output voltage
Positive remote sense
Output voltage TRIM
Negative remote sense
Return terminal for output voltage
P/N 7A0115WLXXX
Prel
l
i
i
mi
i
nary
Pre m nary
DS HEHB 60A 48V 2.5V 7A01 Rev.01-07-03.doc– page
2
–
Magnetek PEG web site, www.magnetekpower.com
Speci
i
f
f
i
i
cat
t
i
i
ons
Spec ca ons
HEHB–60A–48V–2.5V
(Typical values are at nominal input line, full load, airflow 300 LFM, 25°C ambient temperature unless otherwise specified)
Input Characteristics
Operating Input Voltage Range
Input Surge Voltage
Input Under-Voltage Lockout
Turn-On Voltage Threshold
Turn-Off Voltage Threshold
Lockout Hysteresis Voltage
Maximum Input Current (I
INmax
)
No-load Input Current
Off Converter Input Current
Inrush Current Transient Rating
Input Reflected-Ripple Current
RMS; see figures 7 & 8
Notes & Conditions
Note 1
T< 100msec
Min
35
Typ
48
Max
75
100
34.5
33.8
TBA
V
IN
=35V; Full Load at
nominal output voltage
60
9
0.03
2
5
4.9
70
10
Units
V
V
V
V
V
A
mA
mA
As
mA
2
Output Characteristics
Output Voltage Set Point
Output Voltage Regulation
Over Load
Over Line
Over Temperature
Total Output Voltage Range
Output Voltage Ripple and Noise
Peak to Peak
RMS
Operating Output Current Range
Output DC Current Limit Inception
(hiccup mode: 20msec ON, 210msec
OFF)
Admissible Output Capacitance
Notes & Conditions
50 % Load
Min
2.48
Typ
2.5
±5
±4
± 10
Max
2.52
±8
±6
± 20
2.56
Units
V
mV
mV
mV
V
mV
mV
A
A
µF
over sample, line,
load, temperature
and life
20 MHz bandwidth
Full load
see figures 6 & 9
See figures 5 & 10
Full load, resistive
2.44
25
6
-
0
66
50
10
60
72
50,000
Dynamic Characteristics
Output Voltage during Load Current
Transient
Step Change in I
OUT
(0.1A/µs)
Step Change in I
OUT
(1A/µs)
Settling Time to 1% of Vout nom
Turn On Transient
Turn On Time
Output Voltage Overshoot
Notes & Conditions
30µF load cap.
see figures 3 & 4
50% to 75% to 50%
Iout max; figure 3
50% to 75% to 50%
Iout max; figure 4
See figures 1, 2
Full load; Figs. 1 & 2
10,000
µF
load
capacitance, Iout= 0A
Min
Typ
Max
Units
40
130
200
150
0
200
mV
mV
µs
ms
%
Efficiency
100% Load
75% Load
50% Load
Notes & Conditions
Vin = 50V
Min
Typ
88
90
91
Max
Units
%
%
%
NOTE 1 :
Absolute max. continuous input voltage = 80V (operating) ; 100V (surge).
P/N 7A0115WLXXX
Prel
l
i
i
mi
i
nary
Pre m nary
DS HEHB 60A 48V 2.5V 7A01 Rev.01-07-03.doc– page
3
–
Magnetek PEG web site, www.magnetekpower.com
HEHB–60A–48V–2.5V
Isolation Characteristics
Notes & Conditions
Min
Typ
Max
Units
Isolation Voltage input to output
Basic isolation
2000
V
DC
Isolation Voltage Input to plate
Isolation Capacitance
Isolation Resistance
Basic isolation
2000
3300
10
V
DC
pF
MΩ
General Characteristics
Operating Range Temperature
Storage Temperature
Relative Humidity
Calculated MTBF
Notes & Conditions
With appropriate power
derating; see figures 13-
16
Maximum Rating
Non condensing
Bellcore Issue 4
RDF93 HRD Issue 5
Min
-40
-50
5
Typ
Max
+100
+120
95
Units
°C
°C
%
TBA
Feature Characteristics
Switching frequency
ON/OFF Control
Off-State Voltage
On-State Voltage
Output Voltage Trim Range
Output Over-Voltage Protection
Over-Temperature shutdown
Min.
Typ.
420
Max
Units
kHz
V
V
%
%
°C
1.5
0
-20
115
PCB Hot spot
120
125
5
1.2
+10
130
Safety and Regulatory (PENDING)
TUV and KEMA certified for basic insulation compliance to EN06950 requirements
UL and CSA 22.2 No. 950-95(US and Canada) certified with basic insulation for compliance to UL60950.
Note : An external input fuse must always be used for compliance to listed safety requirements.
CE compliant per 72/23/EEC (Low voltage directive) and 93/68/EEC to facilitate CE Mark at system level.
Material flammability rating, UL94V-0
NEBS compliant
P/N 7A0115WLXXX
Prel
l
i
i
mi
i
nary
Pre m nary
DS HEHB 60A 48V 2.5V 7A01 Rev.01-07-03.doc– page
4
–
Magnetek PEG web site, www.magnetekpower.com
Perf
f
ormance Curves
Per ormance Curves
HEHB–60A–48V–2.5V
Figure 1.
Vout,
Turn-on transient at full rated current (resistive load)
(Vin=48V) (5 ms/div, 0.5V/div)
Figure 2.
Vout,
Turn-on transient at NO load
(Vin=48V) (5 ms/div, 0.5V/div)
Figure 3.
Output voltage response to dynamic change in load
current: 75% I
o
to 50%I
o
, where:
di / dt = 5 A /
µs
Load capacitance: 15µF, 30 mΩ ESR tantalum
1µF ceramic capacitor
Figure 4.
Output voltage response to dynamic change in load current:
75% I
o
to 50%I
o
, where:
di / dt = 1 A /
µs
Load capacitance: 15µF, 30 mΩ ESR tantalum
1µF ceramic capacitor
P/N 7A0115WLXXX
Prel
l
i
i
mi
i
nary
Pre m nary
DS HEHB 60A 48V 2.5V 7A01 Rev.01-07-03.doc– page
5
–
Magnetek PEG web site, www.magnetekpower.com
Microchip MCU
