HHS60 DC-DC Series Data Sheet
48VDC Input, 60 Amp Half-Brick Converter
Features
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Applications
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Distributed power architectures
Telecommunications equipment
LAN/WAN
Data processing
RoHS lead solder exemption compliant
Standard ½-brick footprint and pinout
100V/100ms input voltage surge
Low profile (12.7 mm)
Input-to-output isolation: 1500 VDC
Basic insulation
High efficiency - to 90% at full load
Start-up into high capacitive load
Start-up into pre-biased loads
Back-drive protection
Remote sense
Low conducted and radiated EMI
Output overcurrent & overvoltage protection
Overtemperature protection
Remote On/Off (primary referenced), positive
or negative logic
Output voltage trim adjust, positive or
negative
UL 1950 recognized, CSA 22.2 No. 950-95
certification, TUV IEC95
Description
The HHS60 Series of high-density, single-output dc-dc converters is ideal for telecom and datacom systems that
require low voltage at high current in an industry-standard, half-brick footprint. Highly efficient topology and
thermally-optimized construction allow the units to provide high output current in the system over a wide operating
temperature range while still maintaining a safe guardband for component electrical and thermal ratings. The
addition of an external heat sink increases the capacity of the unit. The HHS60 employs 100% surface-mount
components for consistency and reliability in our production process, and is available in four standard output
voltages from 1.5 to 3.3 VDC.
Model Selection
Model
Input
Voltage
VDC
36-75
36-75
36-75
36-75
Input
Current,
1
Max ADC
6.5
4.9
3.6
3.1
Output
Voltage
VDC
3.3
2.5
1.8
1.5
Output Rated
Current I
rated
ADC
60
60
60
60
Output
Ripple/Noise,
mV p-p
150
150
150
150
Typical
Efficiency @
I
rated
%
90
89
86
85
HHS60ZE
HHS60ZD
HHS60ZB
HHS60ZA
This product is intended for integration into end-use equipment. All the required procedures for CE marking of end-use equipment
should be followed.
Model numbers highlighted in yellow or shaded are not recommended for new designs.
NOTES:
1
specified @ V
IN
min.
JUN 06, 2006 revised to JUL 25, 2006
Page 1 of 12
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HHS60 DC-DC Series Data Sheet
48VDC Input, 60 Amp Half-Brick Converter
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings may cause performance degradation, adversely effect long-
term reliability, and cause permanent damage to the converter.
Parameter
Input voltage
Operating Temperature
Storage Temperature
ON/OFF Control Voltage
1
Conditions/Description
Continuous
Transient, 100 ms
Baseplate
Referenced to -Vin
Min
Max
75
100
Units
VDC
VDC
°C
°C
VDC
-40
-55
110
125
50
1
Max. T
BP
= 115 C for model: HHS60ZE.
O
Environmental, Mechanical & Reliability Specifications
All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted.
Parameter
Operating Temperature
Operating Humidity
Storage Humidity
Shock
Sinusoidal Vibration
Weight
Water Washing
MTBF (calculated)
per Bellcore TR-NWT-000332
Method I, Case 2,
Quality level 2,
Dimensions
1
O
Conditions/Description
Baseplate
Relative humidity, non-condensing
Relative humidity, non-condensing
½ Sine, 6ms, 3 axes
GR-63-CORE, Section 5.4.2
Standard process
“Parts Count” method,
Conditions: GB, T
A
=40
O
C,
(50% stress).
Min
-40
Nom
Max
110
95
95
1
Units
°C
%
%
g
Oz/g
MHrs
50
1
3.3/92
Yes
2.1
(overall)
2.28(57.9) x 2.4(61) x
0.5(12.7)
in (mm)
HHS60ZE, T
BP
= 115 C max. for extended power derating capability, Refer to Fig. 5.
Isolation Specifications
All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted.
Parameter
Insulation Safety Rating
Isolation Voltage
Conditions/Description
Input/Output
Input to Baseplate
Output to Baseplate
Input to Output
Min
1500
1500
1500
10
500
Nom
Basic
Max
Units
VDC
VDC
VDC
MΩ
pF
Isolation Resistance
Isolation Capacitance
Safety Regulatory Compliance
Safety Agency
Underwriters Laboratories
TUV Product Service
CB report
Standard Approved To:
UL60950/CSA60950-00
TUV EN60950:2000
IEC60950:1999
Marking
cULus
TUV PS Baurt mark
N/A.
JUN 06, 2006 revised to JUL 25, 2006
Page 2 of 12
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HHS60 DC-DC Series Data Sheet
48VDC Input, 60 Amp Half-Brick Converter
Input Specifications
All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted.
Parameter
Input Voltage
Turn-On Input Voltage
Turn-Off Input Voltage
Input Reflected Ripple Current
Inrush Transient
1
2
Conditions/Description
Continuous
Ramping Up
1
Ramping Down
1
Full Load, 12 µH source inductance
2
BW=20 MHz
Vin = Vin.max
Min
36
33
31
Nom
48
34
32
2.6
0.1
Max
75
35
33
50
1
Units
VDC
VDC
VDC
mA p-p
A
2
s
Refer to Fig. 9 for waveform.
Refer to Fig. 18 for test circuit. / measurement method.
Output Specifications
All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted.
Parameter
Output Voltage Set-point Accuracy:
Output Current
Line Regulation:
Load Regulation:
Output Temperature Regulation
Ripple and Noise, DC to 20MHz
1,2
Dynamic Regulation
Peak Deviation
Settling Time
Peak Deviation
Settling Time
Turn-On Time
(turn-on via application of Vin)
Turn-On Time
(turn-on via ON/OFF signal)
Rise Time
Turn-on Overshoot
Admissible Load Capacitance
Backdrive Protection
Switching Frequency
1
2
Conditions/Description
Vin = 48VDC, Full Load
I
rated
(Vin = 36 V to 75 V)
Vin = Vnom, Io,min to Io,max
(T
Baseplate
) = -40 C to +100 C)
Over line and load
Tamb= 0
O
C to 85
O
C
75-100-75% load step change,
to 1% error band
di/dt = 0.1A/μs
di/dt = 1A/μs
Time from Vin = UVLO to
regulation band
Time from ON/OFF signal to
regulation band
from 10 to 90% of Vout.nom
Over all input voltage, load, and
temperature conditions
I
rated
, Nom Vin
No damage to converter
O
O
Min
-1.2
3*
Nom
Max
1.2
60
0.2
0.2
0.03
150
40
18
250
20
250
20
15
10
5
15,000
Units
%Vout
ADC
%Vout
%Vout
%/
O
C
mV p-p
mV
RMS
75
15
13
125
15
125
15
12
1
%Vout
μs
%Vout
μs
ms
ms
ms
%Vout
μF
kHz
Yes
400
At Iout<Iout.min, the output may contain low frequency component that exceeds ripple specifications.
See Figure 12 for test setup
JUN 06, 2006 revised to JUL 25, 2006
Page 3 of 12
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HHS60 DC-DC Series Data Sheet
48VDC Input, 60 Amp Half-Brick Converter
Protections Specifications
All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted.
Parameter
Type
Threshold
Short Circuit
Overvoltage Protection
Type
Threshold
Type
Threshold
Recovery
1
2
Conditions/Description
Overcurrent Protection
1
Min
Nom
Max
Units
Non-latching – Hiccup mode, auto-recovery
64
78
30
Clamping, auto-recovery
Vin = Vin.nom, Iout=I
rated
Overtemperature Protection
Non-latching, auto-recovery
Baseplate temperature
2
Adc
A
RMS
120
140
Vdc
116
120
90
124
°C
°C
See Fig. 13
See Fig. 14
Feature Specifications
All specifications apply over specified input voltage, output load and temperature range, unless otherwise noted.
Parameter
Negative Logic (-N suffix)
Conditions/Description
Min
Nom
Max
Units
ON/OFF
ON/OFF signal is low or the pin is
connected to -Vin – converter is ON
Von/off in reference to -Vin
ON/OFF pin is connected to -Vin
Von/off in reference to -Vin
ON/OFF pin is floating
On/Off signal is low or the pin is floating
–converter is OFF
Von/off in reference to -Vin
ON/OFF pin is floating
Von/off in reference to -Vin
ON/OFF pin is connected to -Vin
Remote Sense
Remote Sense Headroom
Output Voltage Trim
1
Trim Up
Trim Down
1
1
Converter ON
Source Current
Converter OFF
Open Circuit Voltage
Positive Logic (no suffix)
-0.5
0.5
3.5
1.8
1
20
5
VDC
mADC
VDC
VDC
Converter ON
Open Circuit Voltage
Converter OFF
Source Current
3.5
-0.5
0.5
10
5
1.8
1
10
VDC
VDC
VDC
mADC
%Vout
Vdc
Vdc
Vin = Vin.nom, Iout=I
rated
Vin = Vin.nom, Iout=I
rated
10
-10
Vout can be increased up to 10% via the sense leads or up to 10% via the trim function; however total output voltage trim from all sources
should not exceed 10% of Vout.
JUN 06, 2006 revised to JUL 25, 2006
Page 4 of 12
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HHS60 DC-DC Series Data Sheet
48VDC Input, 60 Amp Half-Brick Converter
Efficiency Characteristics
95
Efficiency,%
95
90
Efficiency,%
85
80
75
70
36V
48V
75V
90
85
80
75
70
65
0
10
20
30
40
50
60
Output current, A
36V
48V
75V
65
0
10
20
30
40
Output current, A
50
60
Figure 4. HHS60ZA (1.5V) Efficiency Curves
Figure 1. HHS60ZE, (3.3V) Efficiency Curves
95
90
Efficiency, %
85
80
75
70
65
0
10
20
30
40
Output current, A
50
60
36V
48V
75V
Figure 2. HHS60ZD (2.5V) Efficiency Curves
95
Efficiency,%
90
85
80
75
70
65
0
10
20
30
40
50
60
Output current, A
Figure 3. HHS60ZB (1.8V) Efficiency Curves
36V
48V
75V
JUN 06, 2006 revised to JUL 25, 2006
Page 5 of 12
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