®
H Series Data Sheet
70 Watt AC-DC Converters
Features
• Universal operating input voltage range 85 to 255 VAC
• RoHS lead-solder exemption compliant
• Class I equipment
• 1, 2, or 3 isolated outputs up to 64 V
• Input over- and undervoltage lockout
• Outputs: SELV, no load, overload, short-circuit proof,
rectangular current limiting characteristic
• Adjustable output voltages with remote on/off
• Immunity according to IEC/EN 61000-4-2, -3, -4, -5, -6
• Emissions according to EN 55011/55022
• PCBs protected by lacquer
• Battery charger models available
111
4.37"
3U
39
1.54"
8 TE
168
6.6"
Safety according to IEC/EN 60950-1
Description
The H Series of AC-DC converters represents a flexible range
of power supplies for use in advanced industrial electronic
systems. Features include high efficiency, reliability, and low
output voltage noise.
The converter inputs are protected against surges and
transients occuring at the source lines. An input over- and
undervoltage lockout circuit disables the outputs, if the input
voltage is outside the specified range. An inrush current
limitation prevents circuit breakers and fuses from tripping at
switch-on.
All outputs are open- and short-circuit proof, and are protected
against overvoltages by means of built-in suppressor diodes.
The outputs can be inhibited by a logic signal applied to the
connector (pin 2). If the inhibit function is not used, pin 2 should
be connected to pin 23 to enable the outputs.
LED indicators display the status of the converter and allow
visual monitoring of the system at any time.
Full input to output, input to case, output to case, and output to
output isolation is provided. The converters are designed and
built according to the international safety standard
IEC/EN 60950-1 and have been approved by the safety
agencies TÜV and UL.
The case design allows operation at nominal load up to 50 °C
in a free-air ambient temperature. If forced cooling is provided,
the ambient temperature may exceed 50 °C but the case
temperature should remain below 80 °C under all conditions.
A temperature sensor generates an inhibit signal, which
disables the outputs, when the case temperature
T
C
exceeds
the limit. The outputs automatically recover, when the
temperature drops below the limit.
Two options are available to adapt the converters to individual
applications (D, V).
The converters may either be plugged into 19" rack system
according to IEC 60927-3 or be mounted onto a chassis or a
plate.
Table of Contents
Page
Page
Immunity to Environmental Conditions ...............................
Mechanical Data .................................................................
Safety and Installation Instructions .....................................
Description of Options ........................................................
Accessories .........................................................................
EC Declaration of Conformity .............................................
12
13
14
15
20
21
Description ............................................................................ 1
Model Selection .................................................................... 2
Functional Description .......................................................... 3
Electrical Input Data .............................................................. 4
Electrical Output Data ........................................................... 5
Auxiliary Functions ................................................................ 9
Electromagnetic Compatibility (EMC) ................................. 11
BCD20019 Rev AA
Page 1 of 21
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®
H Series Data Sheet
70 Watt AC-DC Converters
Model Selection
Non-standard input/output configurations or special custom
adaptions are available on request. Table 1 provides an
overview of the basic input and output configurations. More
Table 1a: Standard models
Output 1
V
o nom
I
o nom
[VDC] [A]
5.1
12
15
24
48
12
15
5.1
5.1
11
6
4.5
3
1.5
2
1.7
5
5
Output 2
V
o nom
I
o nom
[VDC] [A]
-
-
-
-
-
12
15
12
15
-
-
-
-
-
2
1.7
0.7
0.6
Output 3
V
nom
I
o nom
[VDC] [A]
-
-
-
-
-
-
-
12
15
-
-
-
-
-
-
-
0.7
0.6
than 1000 different types have been manufactured with
different input /output configurations and customized
specialities. Please consult Power-One for additional
information.
Operating input voltage range and efficiency
1
V
i min
–
V
i max
85
–
255 VAC, 47
–
63 Hz
LH1001-2R
LH1301-2R
LH1501-2R
LH1601-2R
LH1901-2R
LH2320-2
LH2540-2
LH3020-2
LH3040-2
η
min
[%]
74
81
83
83
83
81
81
78
78
Options
2
D1 – D8, V2, V3
D1 – D8
D1 – D8
D1 – D8
D1 – D8
D1 – D8
D1 – D8
D1 – D8, V2, V3
D1 – D8, V2, V3
Table 1b: Battey charger models
Output
V
Bat
[VDC]
12
24
36
48
60
1
2
3
Operating input voltage range and efficiency
1
I
o nom
[A]
5.0
2.5
1.67
1.25
1.0
V
i min
–
V
i max
85
–
255 VAC, 47
–
63 Hz
LH1781-2R
LH1782-2R
LH1783-2R
LH1784-2R
LH1785-2R
η
min
[%]
81.5
81.5
83.5
83.5
83.5
Options
2
V
o safe 3
[VDC]
12.84
25.68
38.52
51.36
64.2
V
o max
[VDC]
14.15 – 14.6
28.3 – 29.15
42.45 – 43.72
56.6 – 58.3
70.75 – 72.87
D1 – D8
Min. efficiency at
V
i nom
and
I
o nom
. Typical values are approx. 2% better.
Ask Power-One for availability!
Setting voltage with open R-input (battery chargers)
BCD20019 Rev AA
Page 2 of 21
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®
H Series Data Sheet
70 Watt AC-DC Converters
Part Number Description
L H 1 5 01 -2 R D3
Operating input range
V
i
:
85 – 255 VAC, 47 – 63 Hz ................... L
Series ................................................................................... H
Number of outputs ........................................................ 1, 2, 3
Output 1,
V
o1 nom
:
5.1 V
12 V
15 V
24 V
other voltages
48 V
............ 0, 1, 2
.................... 3
................ 4, 5
.................... 6
................ 7, 8
.................... 9
Single-output models (different specs.) .............. 01 – 99
Outputs 2, 3:
V
o2 nom
,
V
o3 nom
:
5.1 V .................................................................... 01 – 19
12 V ..................................................................... 20 – 39
15 V ..................................................................... 40 – 59
24 V ..................................................................... 60 – 69
other voltages for multiple-output models ........... 70 – 99
Ambient temperature range
T
A
:
–10 to 50 °C .................. -2
customer-specific .................. -0
Auxiliary functions and options:
Output voltage control input (single-output models) .... R
Save data signal (D1 – D8, to be specified) ................ D
1
ACFAIL signal (V2, V3, to be specified) ....................... V
1
1
Option D excludes option V and vice versa
Example:
LH1501-2D3: AC-DC converter,operating input voltage range 85 – 255 VAC, providing one output with 15 V /
4.5 A, equipped with an output voltage adjust input (R), and undervoltage monitor D3.
Functional Description
The input voltage is fed via an input fuse, an input filter, and an
inrush current limiter to the input capacitor. This capacitor
sources a single-transistor forward converter. Each output is
powered by a separate secondary winding of the main
transformer. The resultant voltages are rectified and their
ripples smoothed by a power choke and an output capacitor.
The main control circuit senses the main output voltage
V
o1
and generates, with respect to the maximum admissible output
currents, the control signal for the primary switching transistor.
This signal is transferred to the primary side by a coupling
transformer.
The auxiliary output voltages
V
o2
and
V
o3
are tracking. Each
auxiliary output's current is sensed using a current
transformer. If one of the outputs is driven into current limit, the
other outputs will reduce their output voltages as well, because
all output currents are controlled by the same main control
circuit.
BCD20019 Rev AA
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®
H Series Data Sheet
70 Watt AC-DC Converters
03084a
2
5
i
D, V
R
G
Main control circuit
4
4
14
17
20
23
C
Y
N
29
2
Forward converter
approx. 70 kHz
Input filter
1
3
Current
limitation
output 2
14
17
L
32
Current
limitation
output 3
8
11
26
C
Y
1
Fig. 1
Block diagram of a triple-output model.
2
3
4
Input fuse
Transient suppressor
Inrush current limiter (NTC)
Adjust input for single-output models with feature R.
Electrical Input Data
General conditions:
–
T
A
= 25 °C, unless
T
C
is specified.
– Connector pins 2 and 23 interconnected, R input not connected; with option P:
V
o
=
V
o nom
Table 2: Input data
Input
Characteristics
V
i
I
i
P
i 0
Operating input voltage
Input current
No-load input power:
Single-output model
Double-output model
Triple-output model
Idle input power
Rise time
Time to half-value
Input resistance
Input capacitance
Input voltage limits
without any damage
V
i nom
Nominal input voltage
Conditions
I
o
= 0 –
I
o nom
T
C min
–
T
C max
V
i nom
,
I
o
=
I
o nom 2
V
i nom
I
o1,2,3
= 0
min
85
230
0.44
1
7
7
2.5
9
9
2.5
42
4
300
1600
800
8000
4
140
0
270
284
µF
VAC
mΩ
3
4
5
LM
typ
max
255
Unit
VAC
1
A
W
P
i inh
t
inr r
t
inr h
R
i
C
i
V
i abs
inhibit mode
V
i
=
V
i max
R
S
= 0
Ω
3
T
C
= 25 °C
T
C
= 25 °C
I
inr p 5
Peak inrush current
A
µs
1
2
R
NTC
NTC resistance
Frequency 47 – 63 Hz
With multiple-output models, the same
condition for each output applies.
R
S
= source resistance.
Value for initial switch-on cycle.
I
inr p
=
V
i
/ (R
s
+
R
i
+
R
NTC
); see
Inrush
Current.
BCD20019 Rev AA
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®
H Series Data Sheet
70 Watt AC-DC Converters
order to prevent the connectors and switching devices from
damage. Subsequent switch-on cycles within a short interval
will cause an increase of the peak inrush current due to the
warming-up of the NTC resistor.
The inrush current at switch-on can be calculated as follows:
–
I
inr p
=
√
2 •
V
i rms
/
(R
s
+
R
i
+
R
NTC
)
Input Fuse
A slow-blow fuse (Schurter SPT 2.5 A, 250 V, size 5 × 20 mm)
mounted inside of the converter protects against severe
defects. The fuse is not accessible by the user.
The fuse and a VDR form together with the input filter an
effective protection against high input transients.
Input Under-/Overvoltage Lockout
If the input voltage is below approx. 60 VAC or exceeds
approx. 280 VAC, an internally generated inhibit signal
disables the output(s). When checking this function the
absolute maximum input voltage rating
V
i abs
must be carefully
considered (see table
Input data).
Note:
When
V
i
is between
V
i min
and the undervoltage lockout
level, the output voltage may be below the value defined in table
Output data.
04001a
R
s
V
i rms
I
inr p
R
i
R
NTC
C
i
Inrush Current
The converters incorporate an NTC resistor in the input line,
which at initial switch-on cycle limits the peak inrush current, in
Fig. 2
Equivalent circuit diagram for input impedance
Electrical Output Data
General conditions
–
T
A
= 25 °C, unless
T
C
is specified.
– Connector pins 2 and 23 interconnected, R input not connected.
Table 3a: Output data of single-output models
Output
Characteristics
V
o
V
o p
I
o nom
I
o L
v
o
Output voltage
Output overvoltage
protection
1
Output current
Output current
limit
Output
voltage
noise
V
i min
–
V
i max
T
C min
–
T
C max
0
11.44
30
60
50
120
±50
V
o nom
Conditions
V
i nom
,
I
o nom
5.0
7.5
11
0
6.24
60
40
100
80
±100
5.1 V
5.20 11.76
21
6
0
4.68
50
40
80
80
±100
12 V
15 V
12.24 14.70
25
4.5
0
3.12
50
40
80
80
±150
15.30 23.52
41
3
0
1.56
50 100
-
±150
mV
mV
pp
24 V
min typ max
24.48 47.04
85
1.5
A
48 V
min typ max
48.96
V
Unit
min typ max min typ max min typ max
Switch. freq.
V
i nom
,
I
o nom
IEC/EN 61204
Total
BW = 20 MHz
V
i min
–
V
i nom
V
i nom
–
V
i max
I
o nom
V
i nom
,
I
o nom
– 0
∆V
o V
Static line regulation
∆V
o I
v
o d
t
d
α
Vo
Static load regulation
50
±220
100
±0.02
±1.0
±400
80
±0.02
±2.4
150
±200
80
±0.02
±3.0
150
±200
80
±0.02
±4.8
150
±150
120
150
Dynamic Voltage
V
i nom
load
deviation
I
o nom
↔
1
/
3
I
o nom
regulation
2
Recovery IEC/EN 61204
time
Temperature
coefficient
∆V
o
/∆T
C
V
i min
–
V
i max
0 –
I
o nom
µs
%/K
mV/K
±0.02
±9.6
1
2
By suppressor diode
See fig. 5
Dynamic load regulation.
BCD20019 Rev AA
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