HLS30 Series – 30A Half-Brick DC/DC Converter
48V Input
5.0V, 3.3V, 2.5V Output
Data Sheet
Features
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•
•
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•
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Low profile (-11mm) single board design
1500VDC input to output isolation meets
basic insulation
High efficiency - to 92% at full load
Start-up into high capacitive load
Low conducted and radiated EMI
Output overcurrent protection
Output overvoltage protection
Overtemperature protection
Remote sense
Set point accuracy
±
1%
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
certified, TUV IEC950
Applications
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Distributed power architectures
Telecommunications equipment
LAN/WAN applications
Data processing applications
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Description
The new HLS30 series of high-density, single-output DC/DC converters, convert standard telecom and
datacom voltages into isolated low voltage outputs. High efficiencies and a patent-pending board design
create superior thermal transfer that enhances product reliability and eliminates the need for a heatsink.
Selection Chart
Model
Input
voltage
VDC
36-75
36-75
36-75
Input
current,
max
ADC
4.8
3.3
2.5
Output
voltage
VDC
5.0
3.3
2.5
Output rated
current I
rated
ADC
30
30
30
Output
Ripple/Noise,
mV p-p
100
75
50
Typical
Efficiency
@ I
rated
%
91
89
88
HLS30ZG
HLS30ZE
HLS30ZD
This product is intended for integration into end-use equipment. All the required procedures for CE marking of end-use equipment
should be followed
.
Rev. 10/01
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HLS30 Series – 30A Half-Brick DC/DC Converter
48V Input
5.0V, 3.3V, 2.5V Output
Absolute Maximum Ratings
Data Sheet
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
Conditions/Description
Continuous
Transient, 100mS
At 100% load
Referenced to -Vin
Min
Max
75
100
100
125
50
Units
VDC
VDC
°C
°C
VDC
-40
-40
Environmental and Mechanical Specifications
All specifications apply over specified input voltage, output load and temperature range, unless otherwise
noted.
Parameter
Shock
Sinusoidal Vibration
Weight
Water Washing
MTBF
Conditions/Description
Halfsine wave, 3 axes
GR-63-Core, Section 5.A.2
Standard process
Per Bellcore TR-NWT-000332
Min
50
1
Nom
Max
Units
g
Oz/g
kHrs
1.6/46
Yes
1,780
Isolation Specifications
All specifications apply over specified input voltage, output load and temperature range, unless otherwise
noted.
Parameter
Insulation Safety Rating
Isolation Voltage
Isolation Resistance
Isolation Capacitance
Conditions/Description
Min
1500
10
1100
Nom
Basic
Max
Units
VDC
MOhm
pF
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
Turn-On Time
Input Reflected Ripple Current
Inrush Transient
Conditions/Description
Continuous
Ramping Up
Ramping Down
To Output Regulation Band
100% Resistive Load
Full Load, 12uH source
inductance
Vin=Vin.max
Min
36
Nom
48
33
32
5
Max
75
Units
VDC
VDC
VDC
mS
mA p-p
A
2
s
80
0.1
Rev. 10/01
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HLS30 Series – 30A Half-Brick DC/DC Converter
48V Input
5.0V, 3.3V, 2.5V Output
Output Specifications
Data Sheet
All specifications apply over specified input voltage, output load and temperature range, unless otherwise
noted.
Parameter
Output Voltage Setpoint Accuracy
Output Current*
Line Regulation
Load Regulation
Total output voltage regulation
Remote Sense Headroom
Dynamic Regulation
Peak Deviation
Settling Time
Admissible Load Capacitance
Output Current Limit Threshold**
Switching Frequency
Overvoltage Protection,
Non Latching
Trim Range
Conditions/Description
Vin=Vin.nom, Full Load
Vin.min to Vin.max, Iout.max
Vin=Vnom, Iout.min to
Iout.max
Over all input voltage, load,
and temperature conditions
50-75% load step change
to 1% error band
Iout.max, Nom Vin
Vout≤0.97Vout.nom
Over all input voltage and
load conditions
Iout.max, Vin=Vnom
8
150
30,000
110
270
120
90
140
110
140
%Vout
µS
µF
%Iout
kHz
%Vout
%Vout
Min
-1
3
Nom
Max
1
30
0.2
0.2
2
0.5
Units
%Vout
ADC
%Vout
%Vout
%Vout
VDC
-2
* At Iout<Iout.min, the output may contain low frequency component that exceeds ripple specifications.
** Overcurrent protection is non-latching with auto recovery.
Feature Specifications
All specifications apply over specified input voltage, output load and temperature range, unless otherwise
noted.
Parameter
Shutdown (ON/OFF)
Negative Logic
- Converter ON
- Source Current
- Converter OFF
-Open Circuit Voltage
Positive Logic
- Converter ON
- Open Circuit Voltage
- Converter OFF
- Source Current
Overtemperature
Protection
Conditions/Description
On/Off signal is low – converter is ON
-1.0
ON/OFF pin is connected to -Vin
3.5
ON/OFF pin is floating
On/Off signal is low –converter is OFF
3.5
ON/OFF pin is floating
-1.0
ON/OFF pin is connected to -Vin
Average PCB Temp. – Shut down
- Recover
90
3
1.8
0.46
2
50
0.85
50
1.8
VDC
mADC
VDC
VDC
VDC
VDC
VDC
mADC
°C
Min
Nom
Max
Units
Rev. 10/01
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HLS30 Series – 30A Half-Brick DC/DC Converter
48V Input
5.0V, 3.3V, 2.5V Output
Characteristic curves
Data Sheet
Fig. 1 HLS30ZG (5V) Efficiency vs. Output Load
Fig. 4 HLS30ZG (5V) Input Characteristic
Fig. 2 HLS30ZE (3.3V) Efficiency vs. Output
Load
Fig. 5 HLS30ZE (3.3V) Input Characteristic
Fig. 3 HLS30ZD (2.5V) Efficiency vs. Output
Load
Rev. 10/01
Fig. 6 HLS030ZD (2.5V) Input Characteristic
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HLS30 Series – 30A Half-Brick DC/DC Converter
48V Input
5.0V, 3.3V, 2.5V Output
Typical Application
Figure 7 below shows the recommended
connections for the HLS30 series converter.
Data Sheet
resistor between the ON/OFF pin and the +Vin
pin.
When the ON/OFF pin is used to achieve remote
control, the user must take care to insure that the
pin reference for the control is really the -Vin pin.
The control signal must not be referenced ahead
of EMI filtering or remotely from the unit. Optically
coupling the information and locating the optical
coupler directly at the module will solve any of
these problems.
Note:
If the ON/OFF pin is not used, it can be left
floating (positive logic), or connected to the -Vin
pin (negative logic).
Fig.7 Typical application of HLS30 series
The HLS30 series converters do not require any
external components for proper operation.
However, if the distribution of the input voltage to
the converter contains significant inductance, the
capacitor C1 may be required to enhance
performance of the converter. A minimum of a
47μF electrolytic capacitor with the ESR<0.7Ω
is
recommended for the HLS30 series.
If magnitude of the inrush current needs to be
limited, see the “Inrush Current Control
Application Note” on Power-One website
www.power-one.com.
For output decoupling we recommend to use a
10μF tantalum and a 1μF ceramic capacitors
connected directly across the output pins of the
converter. Note, that the capacitors do not
substitute the filtering required by the load.
Output Voltage Trim
The trim feature allows the user to adjust the
output voltage from the nominal value. This can
be used to compensate distribution drops,
perform margining in production, or accommodate
other requirements when output voltage needs to
be adjusted from the nominal. There are two trim
options available in the HLS30 series.
Standard Negative Trim (No suffix)
The negative trim method is the Power-One
standard. The HLS30 standard trim units trim up
with a resistor from the TRIM pin to the Sense pin
and trim down with a resistor from the TRIM Fig.8
HLS30 series negative trim schematic pin to the
+Sense pin as shown in Figure 8.
Shutdown Feature Description
The ON/OFF pin in the HLS30 series converters
functions as a normal soft shutdown. It is
referenced to the –Vin pin (see Figure 7). With
positive logic, when the ON/OFF pin is pulled low,
the output is turned off and the unit goes into a
very low input power mode. With negative logic,
when the ON/OFF pin is pulled low, the unit is
turned on.
An open collector switch is recommended to
control the voltage between the ON/OFF pin and
the -Vin pin of the converter. The ON/OFF pin is
pulled up internally, so no external voltage source
is required. The user should avoid connecting a
Rev. 10/01
Fig. 8 HLS30 series negative trim schematic
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