For technical support and more information, see inside back cover or visit www.ti.com
PT4580 Series
30-W 24/48-V Input
Isolated DC/DC Converter
Standard Application
Cin
= Optional 100F/100V electrolytic
Cout = Required 330F electrolytic (See Notes)
Q
1
= N-Channel MOSFET
R
1
/C
1
= Optional (see application notes)
P T 4 5 8 0
2
1 9
7, 8, 9
1 4 - 1 7
4 - 6
1 0 - 1 2
1 3
L
O
A
D
C
IN
+
V
O
Adjust
+ V
IN
Inhibit
+ R E M O T E S E N S E
R E M O T E S E N S E
+ V
O
V
O
V
IN
Q
1
C
OUT
+
1 8
R
1
C
1
Features
Input Voltage Range:
18V to 60V
1500 VDC Isolation
On/Off Control
V
o
Adjust
Differential Remote Sense
Current Limit
Short-Circuit Protection
Over-Temperature Shutdown
Description
The PT4580 series is a single-output
isolated DC/DC converter, housed in a
19-pin space-saving package. These mod-
ules are UL, CSA, and VDE approved
for telecom applications, and rated at
30W or 8A. The 18V to 60V input range
allows easy integration into many distrib-
uted power applications which utilize 24V
bus architectures.
Standard output voltages range from
1.8V to 15V, and are each adjustable by
up to 10%. Operating features include
a Remote On/Off control, an under-voltage
lockout (UVLO), and a differential re-
mote sense. Protection features include
an output current limit, short-circuit
protection, and over-temperature shut-
down.
A 330F output capacitor is required
for proper operation.
Ordering Information
PT4581
H = 3.3V/8A (26.4W)
PT4582
H = 5.0V/6A
PT4583
H = 12.0V/2.5A
PT4584
H = 15.0V/2A
PT4585
H = 1.8V/8A (14.4W)
Pin-Out Information
Pin Function
1
Do Not Use
2
Remote On/Off
3
Do Not Use
4
-Vin
5
-Vin
6
-Vin
7
+Vin
8
+Vin
9
+Vin
10
-Vo
11
-Vo
12
-Vo
13
-Remote Sense
14
+Vo
15
+Vo
16
+Vo
17
+Vo
18
Vo Adjust
19
+Remote Sense
For more information,
see application notes.
SLTS119A
(Revised 3/14/2002)
Undervoltage Lockout
Space-Saving Package
Solderable Copper Case
UL1950 Recognized
CSA 22.2 950 Certified
EN60950 Approved
VDE Licensed
5 x10
6
Hrs MTBF
Meets FCC Class A
Radiated Limits
PT Series Suffix
(PT1234
x
)
Case/Pin
Order
Package
Configuration
Suffix
Code *
Vertical
N
(END)
Horizontal
A
(ENA)
SMD
C
(ENC)
* Previously known as package styles 1400 &
1410.
(Reference the applicable package code draw-
ing for the dimensions and PC board layout)
For technical support and more information, see inside back cover or visit www.ti.com
PT4580 Series
30-W 24/48-V Input
Isolated DC/DC Converter
Specifications
(Unless otherwise stated, T
a
=25C, V
in
=24V, C
out
=330F, and I
o
=I
o
max)
PT4580 SERIES
Characteristic
Symbol
Conditions
Min
Typ
Max
Units
Output Current
I
o
Over V
in
range
V
o
= 15V
0.1
(1)
--
2.0
V
o
= 12V
0.1
(1)
--
2.5
A
V
o
=5.0V
0.25
(1)
--
6.0
V
o
3.3V
0.25
(1)
--
8.0
Input Voltage Range
V
in
Over I
o
Range
18.0
24.0
60.0
V
Set Point Voltage Tolerance
V
o
tol
V
o
5.0V
--
1
1.5
%V
o
V
o
3.3V
--
33
50
mV
Temperature Variation
Reg
temp
40
T
a
+85C
--
0.5
--
%V
o
Line Regulation
Reg
line
Over V
in
range
V
o
5.0V
--
0.2
1.0
%V
o
V
o
3.3V
--
7
33
mV
Load Regulation
Reg
load
Over I
o
range
Vo
5.0V
--
0.4
1.0
%V
o
V
o
3.3V
--
13
33
mV
Total Output Voltage Variation
V
o
tot
Includes set-point, line, load,
V
o
5.0V
--
2
--
%V
o
40
T
a
+85C
V
o
3.3V
--
67
--
mV
Efficiency
V
o
= 15V
--
85
--
V
o
= 12V
--
86
--
V
o
=5.0V
--
83
--
%
V
o
=3.3V
--
80
--
V
o
=1.8V
--
70
--
V
o
Ripple (pk-pk)
V
r
20MHz bandwidth
V
o
5.0V
--
1.0
2.0
%V
o
V
o
3.3V
--
50
75
mV
pp
Transient Response
t
tr
0.1A/s load step, 50% to 100% I
o
max
--
100
200
s
V
tr
V
o
over/undershoot
V
o
5.0V
--
3.0
5.0
%V
o
V
o
3.3V
--
100
150
mV
Short Circuit Current
I
sc
--
2xI
o
max
--
A
Switching Frequency
s
Over V
in
range
V
o
10V
450
500
550
kHz
V
o
<
10V
700
750
800
Under-Voltage Lockout
UVLO
V
in
increasing
--
17
--
V
V
in
decreasing
--
16
--
Remote On/Off Input (pin 2)
Referenced to V
in
(pins 46)
Input High Voltage
V
IH
2.5
--
15
(2)
V
Input Low Voltage
V
IL
0.2
--
+0.8
Input Low Current
I
IL
3
6
10
A
Standby Input Current
I
in
standby
pins 2 & 4 connected
--
8
16
mA
Internal Input Capacitance
C
in
--
0.66
--
F
External Output Capacitance
C
out
Between +V
o
and V
o
V
o
9.0V
260
330
600
(3)
F
V
o
5.0V
260
330
1,000
(3)
Isolation Voltage
Input-output/input-case
1500
--
--
Vdc
Capacitance
Input-output
--
1200
--
pF
Resistance
Input-output
10
--
--
M
Operating Temperature Range
T
a
Over V
in
range
-40
(4)
--
+85
(5)
C
Maximum Case Temperature
T
c
--
--
100
C
Storage Temperature Range
T
s
--
-40
--
+125
C
Reliability
MTBF
Per Bellcore TR-332
5.0
--
--
10
6
Hrs
50% stress, T
a
=40C, ground benign
Mechanical Shock
--
Per Mil-Std-883D, method 2002.3,
--
500
--
G's
1mS, half-sine, mounted to a fixture
Mechanical Vibration
--
Per Mil-Std-883D, method 2007.2,
--
20
--
G's
20-2000Hz, soldered to board
Weight
--
--
--
40
--
grams
Flammability
--
Materials meet UL 94V-0
Notes:
(1) The DC/DC converter will operate at no load with reduced specifications.
(2) The Remote On/Off input has an internal pull-up. If it is left open circuit the converter will operate when input power is applied. A low-leakage
(<100nA) MOSFET is recommended to control this input. The open-circuit voltage is less than 10V. See application notes for interface considerations.
(3) Output capacitor values are absolute. Allowances must be made for any additional de-coupling capacitors and the total external capacitor tolerance.
The value of external capacitance is limited due to regulator startup current requirements. Consult the factory for further details.
(4) For operation below 0C, the required external output capacitor must have temperature stable characteristics. E.g. Tantalum or Oscon types.
(5) See Safe Operating Area curves or contact the factory for the appropriate thermal derating.
For technical support and more information, see inside back cover or visit www.ti.com
Note A:
All data listed in the above graphs has been developed from actual products tested at 25C. This data is considered typical data for the DC-DC Converter.
Note B:
SOA Curves represent operating conditions at which internal components are at or below manufacturer's maximum rated operating temperatures.
PT4582, 5.0 VDC
(See Note A)
PT4583, 12.0 VDC
(See Note A)
Efficiency vs Output Current
Efficiency vs Output Current
Efficiency vs Output Current
Ripple vs Output Current
Ripple vs Output Current
Ripple vs Output Current
Power Dissipation vs Output Current
Power Dissipation vs Output Current
Power Dissipation vs Output Current
PT4581, 3.3 VDC
(See Note A)
Efficiency (%)
Ripple (mV)
PD (W
atts)
Efficiency (%)
Ripple (mV)
PD (W
atts)
Iout (A)
Iout (A)
Iout (A)
Iout (A)
Iout (A)
Iout (A)
Vin
Vin
Vin
Vin
Vin
Vin
40
50
60
70
80
90
100
0
2
4
6
8
18.0V
24.0V
36.0V
48.0V
60.0V
0
10
20
30
40
50
60
0
2
4
6
8
18.0V
24.0V
36.0V
48.0V
60.0V
0
2
4
6
8
10
0
2
4
6
8
18.0V
24.0V
36.0V
48.0V
60.0V
40
50
60
70
80
90
100
0
1
2
3
4
5
6
18.0V
24.0V
36.0V
48.0V
60.0V
0
10
20
30
40
50
60
70
0
1
2
3
4
5
6
18.0V
24.0V
36.0V
48.0V
60.0V
0
2
4
6
8
0
1
2
3
4
5
6
18.0V
24.0V
36.0V
48.0V
60.0V
Safe Operating Area (V
in
=24V)
Safe Operating Area (V
in
=24V)
Safe Operating Area (V
in
=24V)
20
30
40
50
60
70
80
90
0
1
2
3
4
5
6
7
8
Iout (A)
Ambient Temperature (C)
200LFM
120LFM
60LFM
Nat conv
Airflow
20
30
40
50
60
70
80
90
0
1
2
3
4
5
6
Iout (A)
Ambient Temperature (
C)
200LFM
120LFM
60LFM
Nat conv
Airflow
PT4580 Series
30-W 24/48-V Input
Isolated DC/DC Converter
40
50
60
70
80
90
100
0
0.5
1
1.5
2
2.5
Iout (A)
Efficiency - %
18.0V
24.0V
36.0V
48.0V
60.0V
V
IN
0
20
40
60
80
100
120
0
0.5
1
1.5
2
2.5
Iout (A)
Ripple - mV
60.0V
48.0V
36.0V
24.0V
18.0V
V
IN
0
2
4
6
8
0
0.5
1
1.5
2
2.5
Iout (A)
Pd - Watts
60.0V
48.0V
36.0V
24.0V
18.0V
V
IN
20
30
40
50
60
70
80
90
0
0.5
1
1.5
2
2.5
Iout (A)
Ambient Temperature (
C)
200LFM
120LFM
60LFM
Nat conv
Airflow
Application Notes
For technical support and more information, see inside back cover or visit www.ti.com
Adjusting the Output Voltage of Power Trends'
30W Isolated DC/DC Converter Series
The factory pre-set output voltage of Power Trends' 30W
series of isolated DC/DC converters may be adjusted
within a nominal 10% range. This is accomplished with
the addition of a single external resistor. For the input
voltage range specified in the data sheet, Table 1 gives the
allowable adjustment range for each model as V
o
(min)
and V
o
(max).
Adjust Up:
An increase in the output voltage is obtained
by adding a resistor, R
2
between V
o
adjust (pin 18), and
-Remote Sense (pin 13). See note 4.
Adjust Down:
Add a resistor
(R
1
)
, between V
o
adjust (pin
18), and +Remote Sense (pin 19).
Refer to Figure 1 and Tables 2 & 3 for both the placement and
value of the required resistor,
(R
1
)
or R
2
.
Notes:
1. Use only a single 1% resistor in either the
(R
1
)
or R
2
location. Place the resistor as close to the ISR as possible.
2. Never connect capacitors to V
o
adjust. Any capacitance
added to the V
o
adjust control pin will affect the stability of
the ISR.
Table 1
DC/DC CONVERTER ADJUSTMENT RANGE AND FORMULA PARAMETERS
Series Pt #
AL Case:
24V Bus
PT3341
PT3342
PT3343
PT3344
48V Bus
PT3327
PT3325
PT3326
PT3321
PT3322
PT3323
PT3324
CU Case:
24V Bus
PT4585
PT4581
PT4582
PT4583
PT4584
48V Bus
PT4567
PT4565
PT4566
PT4561
PT4562
PT4571
PT4563
PT4564
V
o
(nom)
1.8V
1.8V
2.0V
2.5V
3.3V
5.0V
9.0V
12.0V
15.0V
Vo(min)
1.62V
1.62V
1.8V
2.25V
2.95V
4.5V
7.0V
10.8V
13.5V
Vo(max)
2.5V
1.98V
2.2V
2.75V
3.65V
5.5V
10.0V
13.2V
16.5V
V
r
1.225V
1.225V
1.225V
1.225V
1.225V
1.225V
2.5V
2.5V
2.5V
K
o
(Vk
)
69.58
69.58
62.47
42.33
68.89
68.71
133.25
135.9
137.5
R
s
(k
)
80.6
80.6
150.0
121.0
150.0
121.0
110
90.9
80.6
Figure 1
( R 1 )
A d j D o w n
R 2
Adj
U p
C i n
1 0 0
F
1 0 0 V
(Optional)
+
C o u t
3 3 0
F
+
L
O
A
D
+ V
out
-V
out
+ V
in
-V
in
3 0 W I s o l a t e d
1 8
4, 5, 6
7, 8, 9
+Vin
+Vout
-Vin
Vo(adj)
R e m o t e
On/Off
2
Sns(+)
1 9
10 - 12
-Vout
14 - 17
Sns(-)
1 3
3. If the remote sense pins are not being used, the resistors
(R1)
and R2 can be connected to +V
out
or -V
out
respectively.
4. The adjusted output voltage, V
a
effectively sets the voltage
across pins 13 and 19 (Remote Sense). When using the
remote sense pins, V
out
(measured directly across pins 10
12, and 1417) can be significantly higher than V
a
, and may
exceed V
o
(max). If V
a
is adjusted upward of V
o
(max), the
the minimum input voltage is increased by the same
percentage as V
out
exceeds V
o
(max).
The values of
(R
1
)
[adjust down], and R
2
[adjust up], can
also be calculated using the following formulas.
(R
1
)
=
K
o
(V
a
V
r
)
R
s
k
V
r
(V
o
V
a
)
R
2
=
K
o
R
s
k
(V
a
V
o
)
Where
V
o
= Original output voltage
V
a
= Adjusted output voltage
V
r
= Reference voltage (Table 1)
K
o
= Multiplier constant (Table 1)
R
s
= Series resistance (Table 1)
PT3320/3340/4560/4580 Series
For technical support and more information, see inside back cover or visit www.ti.com
Application Notes
continued
Table 2
DC/DC CONVERTER ADJUSTMENT RESISTOR VALUES
Series Pt #
AL Case
24V Bus
PT3341
48V Bus
PT3327
PT3325
PT3326
PT3321
CU Case
24V Bus
PT4585
PT4581
48V Bus
PT4567
PT4565
PT4566
PT4561
Current
8Adc
8Adc
8Adc
8Adc
8Adc
V
o
(nom)
1.8V
1.8V
2.0V
2.5V
3.3V
V
a
(req'd)
R1 =
(Blue)
R2 = Black
1.65
(80.3)k
(80.3)k
1.7
(189.0)k
(189.0)k
1.75
(516.0)k
(516.0)k
1.8
1.85
1.31M
1.31M
(62.5)k
1.9
615.0k
615.0k
(194.0)k
1.95
383.0k
383.0k
(589.0)k
2.0
267.0k
2.05
198.0k
1.1M
2.1
151.0k
475.0k
2.15
118.0k
266.0k
2.2
93.3k
162.0k
2.25
74.0k
(20.7)k
2.3
58.6k
(64.7.0)k
2.35
45.9k
(138.0)k
2.4
35.4k
(285.0)k
2.45
26.4k
(726.0)k
2.5
18.8k
2.55
726.0k
2.6
302.0k
2.65
161.0k
2.7
90.6k
2.75
48.3k
2.95
(127.0)k
3.0
(183.0)k
3.05
(261.0)k
3.1
(377.0)k
3.15
(572.0)k
3.2
(961.0)k
3.25
(2.13)M
3.3
3.35
1.23M
3.4
539.0k
3.45
309.0k
3.5
194.0k
3.55
126.0k
3.6
79.6k
3.65
46.8k
PT3320/3340/4560/4580 Series
Application Notes
For technical support and more information, see inside back cover or visit www.ti.com
Table 3
DC/DC CONVERTER ADJUSTMENT RESISTOR VALUES
Series Pt #
AL Case
24V Bus
PT3342
PT3343
PT3344
48V Bus
PT3322
PT3323
PT3324
CU Case
24V Bus
PT4582
PT4583
PT4584
48V Bus
PT4562
PT4571
PT4563
PT4564
Current
6Adc
3.3Adc
2.5Adc
2.0Adc
V
o
(nom)
5.0V
9.0V
12.0V
15.0V
V
a
(req'd)
V
a
(req'd)
R1 =
(Blue)
R2 = Black
4.5
(246.0)k
7.0
(9.9)k
4.55
(293.0)k
7.2
(29.2)k
4.6
(352.0)k
7.4
(53.2)k
4.65
(428.0)k
7.6
(84.2)k
4.7
(529.0)k
7.8
(125.0)k
4.75
(670.0)k
8.0
(183.0)k
4.8
(882.0)k
8.2
(270.0)k
4.85
(1.23)M
8.4
(414.0)k
4.9
(1.94)M
8.6
(703.0)k
4.95
8.8
(1.57)M
5.0
9.0
5.05
9.2
556.0k
5.1
566.0k
9.4
223.0k
5.15
337.0k
9.6
112.0k
5.2
223.0k
9.8
56.6k
5.25
154.0k
10.0
23.3k
5.3
108.0k
5.35
75.3k
10.8
(285.0)k
5.4
50.8k
11.0
(371.0)k
5.45
31.7k
11.2
(500.0)k
5.5
16.4k
11.4
(715.0)k
11.6
(1.15)M
11.8
12.0
12.2
588.0k
12.4
249.0k
12.6
136.0k
12.8
78.9k
13.0
45.0k
13.2
22.3k
13.5
(323.0)k
13.6
(355.0)k
13.8
(437.0)k
14.0
(522.0)k
14.2
(724.0)k
14.4
(1010.0)k
14.6
(1.58)M
14.8
15.0
15.2
607.0k
15.4
263.0k
15.6
149.0k
15.8
91.3k
16.0
56.9k
16.5
11.1k
PT3320/3340/4560/4580 Series
For technical support and more information, see inside back cover or visit www.ti.com
Application Notes
Using Remote On/Off on Power Trends'
30W Isolated DC-DC Converter Series
Power Trends' 30W isolated series of DC/DC converters
incorporate a Remote On/Off function. This function may
be used in applications for battery conservation, power-
up/shutdown sequencing, or to co-ordinate the power-up
of the regulator for active in-rush current control. (See
TI application reports, SLTA021, and SLUA250).
The Remote On/Off function is provided by pin 2. If
pin 2 is left open-circuit, the converter provides a regu-
lated output whenever a valid source voltage
1
is applied
between +V
in
(pins 7-9), and V
in
(pins 4-6). Applying
a low voltage
2
, with respect to V
in
(pin 2), disables the
regulator output
3
. Table 1 details the control requirements
for this input. Figure 1 shows how a discrete MOSFET
(Q
1
) may be referenced to the negative input voltage rail
to control the Remote On/Off pin.
Table 1 Remote On/Off Control Requirements
2
Parameter
min
max
Enable (V
IH
)
2.5V
5
15V
(or open circuit)
4
Disable (V
IL
)
0.3V
0.8V
Notes:
1. These converters incorporate an "Under Voltage Lockout"
(UVLO) function. This function automatically holds the
converter output in the "Off" state until there is sufficient
input voltage for the converter to produce a regulated
output. Table 2 gives the applicable UVLO thresholds.
Table 2 UVLO Thresholds
Series
UVLO Threshold
V
in
Range
PT3320/4560
34 2.0V
36 75V
PT3340/4580
16.5 1.5V
18 60V
2. The Remote On/Off control pin uses V
in
(pins 4-6) as its
ground reference. All voltages specified are with respect to
V
in
.
3. When the converter output is disabled the current drawn
from the input supply is typically reduced to 8mA (16mA
maximum).
4. The internal circuitry comprises of a high impedance (3A
-10A) current source. The open-circuit voltage is less
than 10V.
5. The Remote On/Off pin is ideally controlled using devices
with an open-collector (or open-drain) output. A small
low-leakage MOSFET (<100nA) is recommended. A
pull-up resistor is not required, but may be necessary to
ensure that the Remote On/Off pin exceeds V
IH
(min)
(see Table 1).
Do not
use a pull-up resistor to the +V
in
input, or drive the pin above V
IH
(max).
Figure 1
Turn-On Time:
When the Remote On/Off input is left
open-circuit, the output of the converter is automatically
enabled when a valid input voltage
1
is applied to the
input power pins. The converter typically rises to full
regulation within 30ms of the application of power (or
after the release of the Remote On/Off pin with input
power applied). The actual turn-on time will vary with
the input voltage, output load, and the total amount of
capacitance connected to the output. Using the circuit of
Figure 1, Figure 2 shows the typical output voltage and
input current waveforms for a PT3322/PT4562 after Q
1
is turned off. The turn off of Q
1
correlates with the fall
of the Q
1
Vgs waveform. The waveforms were measured
with a 48Vdc input voltage, and 5-A resistive load.
Figure 2
PT3320/3340/4560/4580 Series
30W Isolated
1 8
4 , 5 , 6
7 , 8 , 9
+ V i n
+ V o u t
- V i n
V o ( a d j )
R e m o t e
O n / O f f
2
S n s ( + )
1 9
1 0 - 1 2
- V o u t
1 4 - 1 7
S n s ( - )
1 3
C
out
+
C
in
+
Q 1
B S S 1 3 8
+V
o
V
o
+V
in
-V
in
O F F / O N
C
1
0 . 0 1 F
R
1
, 10 k
R
1
& C
1
-See Note 7
6. Keep the on/off transition to less than 1ms. This prevents
erratic operation of the ISR, whereby the output voltage
may drift un-regulated between 0V and the rated output
voltage during power-up.
7. In Figure 1, Q
1
is a low-threshold MOSFET. The
components R
1
and C
1
are added to improve noise
susceptibility.
Vo (2V/Div)
Iin (0.5A/Div)
Q1Vgs (10V/Div)
HORIZ SCALE: 2ms/Div
Application Notes
For technical support and more information, see inside back cover or visit www.ti.com
PT3320/3340/4560/4580 Series
VDE Approved Installation Instructions (Installationsanleitung)
Nennspannnug (Rated Voltage):
PT4560 36 to 72 Vdc, Transient to 75Vdc
PT4580 18 to 60 Vdc, PT4599 19 to 31 Vdc
Nennaufnahme (Rated Input):
PT4560
1.5 Adc
PT4580, PT4599 3.0 Adc
Nennleistung (Rated Power):
30 Watts Maximum
Ausgangsspannung (Sec. Voltage): PT4560 Series
PT4580 Series
PT4561, 3.3 Vdc, 8.0 Adc
PT4581, 3.3 Vdc, 8.0 Adc
PT4562, 5.0 Vdc, 6.0 Adc
PT4582, 5.0 Vdc, 6.0 Adc
Ausgangsstrom (Sec. Current):
PT4563, 12.0 Vdc, 2.5 Adc
PT4583,12.0 Vdc, 2.5 Adc
oder (or)
PT4564, 15.0 Vdc, 2.0 Adc
PT4584,15.0 Vdc, 2.0 Adc
Ausgangsleistung (Sec. Power):
PT4565, 2.0 Vdc, 8.0 Adc
PT4585, 1.8 Vdc, 8.0 Adc
PT4566, 2.5 Vdc, 8.0 Adc
PT4599, 5.0 Vdc, 6.0 Adc
PT4567, 1.8 Vdc, 8.0 Adc
PT4568, 5.2 Vdc, 6.0 Adc
PT4569, 6.0 Vdc, 5.0 Adc
PT4570, 8.0 Vdc, 3.75 Adc
PT4571, 9.0 Vdc, 3.3 Adc
Angabe der Umgebungstemperatur
(Information on ambient temperature): +85C Ambient or 100C Case Maximum
Besondere Hinweise (Special Instructions):
Es ist vorzusehen, da die Spannungsversorgung in einer Endanwendung ber eine isolierte
Sekundaerschaltung bereit gestellt wird. Die Eingangspannung der Spannungsversorgungsmodule muss
eine verstaerkte Isolierung von der Wechselstromquelle aufweisen.
Die Spannungsversorgung muss gemaess den Gehaeuse-, Montage-, Kriech- und Luftstrecken-,
Markierungs- und Trennanforderungen der Endanwendung installiert werden. Bei Einsatz eines TNV-3-
Einganges muss die SELV-Schaltung ordnungsgemaess geerdet werden.
(The power supply is intended to be supplied by isolated secondary circuitry in an end use application.
The input power to these power supplies shall have reinforced insulation from the AC mains.
The power supply shall be installed in compliance with the enclosure, mounting, creepage, clearance,
casualty, markings, and segregation requirements of the end-use application. When the input is TNV-3,
the SELV circuitry must be reliably grounded.)
Offenbach,
VDE Prf- und Zertifizierungsinstitut
Abteilung /
Department TD
(Jrgen Brwinkel)
Ort /
Place:
Datum /
Date:
(Stempel und Unterschrift des Herstellers / Stamp
and signature of the manufacturer)
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