PT3324A [ETC]
DC to DC Converter ; 直流到直流转换器\n
| 型号： | PT3324A |
| 厂家： | 
ETC |
| 描述： | DC to DC Converter
|
| 文件： | 总9页 (文件大小：184K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PT3320 Series
30-W 48-V Input
Isolated DC/DC Converter
SLTS018B
(Revised 4/9/2002)
Features
• Input Voltage Range:
36V to 75V
• 1500 VDC Isolation
• On/Off Control
• Vo Adjust
• Differential Remote Sense
• Current Limit
• Undervoltage Lockout
• UL1950 Recognized
• Flexible SIP Package
• CSA 22.2 950 Certified
• EN60950 Approved
• VDE Licensed
• 4.9 x106 Hrs MTBF
• Meets FCC Class A
Radiated Limits
• Short-Circuit Protection
• Over-Temperature Shutdown
Description
Ordering Information
Pin-Out Information
The PT3320 series is a single-output
isolated DC/DC converter, housed in a
19-pin aluminum SIP package. These
modules are UL, CSA, and VDE ap-
proved for telecom applications, and
rated at 30 watts or 8 A. Standard output
voltages range from 1.8 V to 15 V, each
adjustable by up to 10% of nominal.
Operating features include a remote
on/off control, an under-voltage-lockout
(UVLO), and a differential remote sense.
The PT3320 series also incorporates
many protection features. These include
output current limit, short-circuit pro-
tection, and over-temperature shutdown.
A 330µF of output capacitance is
required for proper operation.
PT 3321r = 3.3V/8A (26.4W)
PT 3322r = 5.0V/6A
PT 3323r = 12.0V/2.5A
Pin Function
1
2
3
4
5
6
7
8
9
Do Not Use
Remote On/Off †
Do Not Use
PT 3324r = 15.0V/2A
PT 3325r = 2.0V/8A (16W)
PT 3326r = 2.5V/8A (20W)
PT 3327r = 1.8V/8A (14.4W)
PT 3328r = 5.2V/6A
-V
in
-V
-V
in
in
+V
in
+V
in
+V
in
10 -V
o
11 -V
PT Series Suffix
o
o
(PT1234x)
12 -V
Case/Pin
Configuration
O rder
Suffix
Package
Code *
13 -Remote Sense
14 +V
o
Vertical
Horizontal
SMD
N
A
C
(EHG)
(EHH)
(EHJ)
15 +V
o
16 +V
o
17 +V
o
o
* Previously known as package styles 840 &
850.
18
V Adjust †
19 +Remote Sense
(Reference the applicable package code draw-
ing for the dimensions and PC board layout)
†For more information,
see application notes.
Standard Application
VO Adjust
+VIN
+REMOTE SENSE
18
19
+VO
7, 8,
9
14-17
PT3320
L
O
A
D
2
4-6
13
10-12
+
+
CIN
COUT
Q1
R1
Inhibit
–VO
C1
–VIN
–REMOTE SENSE
C
= Optional 100µF/100V electrolytic
= Required 330µF electrolytic (See Notes)
= N-Channel MOSFET
in
C
out
Q1
R1/C1 = Optional (see application notes)
For technical support and more information, see inside back cover or visit www.ti.com
PT3320 Series
30-W 48-V Input
Isolated DC/DC Converter
Specifications (Unless otherwise stated, Ta =25°C, Vin =48V, Cout =330µF, and Io =Iomax)
PT3320 SERIES
Typ
Characteristic
Symbol
Conditions
Min
Max
Units
(1)
(1)
(1)
(1)
Output Current
Io
Over Vin range
Vo = 15V
Vo = 12V
Vo =5.0V
Vo ≤3.3V
0.1
—
—
—
—
2.0
2.5
6.0
8.0
0.1
A
0.25
0.25
Input Voltage Range
Set Point Voltage Tolerance
Vin
Vo tol
Over Io Range
36.0
—
—
—
—
—
—
—
—
—
48.0
1
33
0.5
0.2
7
0.4
13
2
75.0
1.5
50
—
1.0
33
1.0
33
—
V
Vo≥5.0V
Vo≤3.3V
%Vo
mV
%Vo
%Vo
mV
%Vo
mV
%Vo
mV
Temperature Variation
Line Regulation
Regtemp
Regline
–40° ≤Ta ≤ +85°C
Over Vin range
Vo≥5.0V
Vo≤3.3V
Vo ≥5.0V
Vo≤3.3V
Vo≥5.0V
Vo≤3.3V
Vo = 15V
Vo = 12V
Vo =5.0V
Vo =3.3V
Vo =1.8V
Load Regulation
Regload
∆Votot
η
Over Io range
Total Output Voltage Variation
Efficiency
Includes set-point, line, load,
–40° ≤Ta ≤ +85°C
67
—
—
—
—
—
—
85
87
84
80
69
—
—
—
—
—
Vo Ripple (pk-pk)
Vr
20MHz bandwidth
Vo ≥5.0V
Vo ≤3.3V
—
—
—
—
—
—
400
600
—
—
1.0
50
100
3.0
100
2xIomax
500
750
34
33
2.0
75
200
5.0
150
—
600
900
—
—
%Vo
mVpp
µs
%Vo
mV
A
Transient Response
ttr
0.1A/µs load step, 50% to 100% Iomax
Vo over/undershoot
Vo ≥5.0V
Vo ≤3.3V
∆Vtr
Short Circuit Current
Switching Frequency
Isc
ƒs
Over Vin range
Vo>10V
kHz
V
Vo <10V
Under-Voltage Lockout
UVLO
V
in increasing
Vin decreasing
Remote On/Off Input (pin 2)
Input High Voltage
Input Low Voltage
Input Low Current
Referenced to –Vin (pins 4–6)
(2)
VIH
VIL
IIL
2.5
—
—
–6
8
0.66
330
330
15
V
–0.2
+0.8
–10
16
–3
—
—
260
260
µA
mA
µF
Standby Input Current
Internal Input Capacitance
External Output Capacitance
Iin standby
Cin
Cout
pins 2 & 4 connected
Between +Vo and –Vo
—
(3)
(3)
Vo ≥9V
Vo ≤5V
600
1,000
µF
Isolation Voltage
Capacitance
Resistance
Input-output/input-case
Input-output
1500
—
—
—
—
—
Vdc
pF
1200
—
Input-output
10
MΩ
(4)
(5)
Operating Temperature Range
Maximum Case Temperature
Storage Temperature Range
Reliability
T
Over Vin range
-40
—
-40
—
—
—
+85
100
°C
°C
°C
a
T
c
T
+125
s
MTBF
Per Bellcore TR-332
50% stress, Ta =40°C, ground benign
6
4.9
—
—
10 Hrs
Mechanical Shock
—
Per Mil-Std-883D, method 2002.3,
1mS, half-sine, mounted to a fixture
—
500
—
G’s
Mechanical Vibration
—
Per Mil-Std-883D, method 2007.2,
20-2000Hz, soldered in board
—
—
—
10
43
—
—
G’s
Weight
Flammability
—
—
grams
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 module will operate when input power is appl ied. 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 0°C, the required external output capacitor must have temperature stable characteristics. E.g. Tantalumor 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
Typical Characteristics
PT3320 Series
30-W 48-V Input
Isolated DC/DC Converter
PT3321, 3.3 VDC (See Note A)
PT3322, 5.0 VDC (See Note A)
PT3323, 12.0 VDC (See Note A)
Efficiency vs Output Current
Efficiency vs Output Current
Efficiency vs Output Current
90
80
70
60
50
90
80
70
60
50
40
90
80
70
60
50
VIN
VIN
VIN
36.0V
48.0V
60.0V
75.0V
48.0V
36.0V
60.0V
75.0V
48.0V
60.0V
36.0V
75.0V
0
2
4
6
8
0
1
2
3
4
5
6
0
0.5
1
1.5
2
2.5
Iout (A)
Iout (A)
Iout (A)
Ripple vs Output Current
Ripple vs Output Current
Ripple vs Output Current
50
40
30
20
10
0
60
50
40
30
20
10
0
200
160
120
80
VIN
VIN
VIN
75.0V
60.0V
48.0V
36.0V
75.0V
60.0V
48.0V
36.0V
75.0V
60.0V
48.0V
36.0V
40
0
0
2
4
6
8
0
1
2
3
4
5
6
0
0.5
1
1.5
2
2.5
Iout (A)
Iout (A)
Iout (A)
Power Dissipation vs Output Current
Power Dissipation vs Output Current
Power Dissipation vs Output Current
8
6
4
2
0
8
6
4
2
0
8
6
4
2
0
VIN
VIN
VIN
75.0V
60.0V
36.0V
48.0V
75.0V
75.0V
36.0V
60.0V
48.0V
60.0V
48.0V
36.0V
0
2
4
6
8
0
0.5
1
1.5
2
2.5
0
1
2
3
4
5
6
Iout (A)
Iout (A)
Iout (A)
Safe Operating Area, Vin =48V (See Note B)
Safe Operating Area, Vin =48V (See Note B)
Safe Operating Area, Vin =48V (See Note B)
90
80
70
60
50
40
30
20
90
80
70
60
50
40
30
20
90
80
70
60
50
40
30
20
Airflow
Airflow
Airflow
Nat conv
60LFM
120LFM
200LFM
200LFM
120LFM
60LFM
200LFM
120LFM
60LFM
Nat conv
Nat conv
0
2
4
6
8
0.0
0.5
1.0
1.5
2.0
2.5
0
1
2
3
4
5
6
Iout (A)
Iout (A)
Iout (A)
Note A: All data listed in the above graphs has been developed from actual products tested at 25°C. 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 temperature.
For technical support and more information, see inside back cover or visit www.ti.com
Application Notes
PT3320/3340/4560/4580 Series
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 Vo (min)
and Vo (max).
3. If the remote sense pins are not being used, the resistors
(R1) and R2 can be connected to +Vout or -Vout
respectively.
4. The adjusted output voltage, Va effectively sets the voltage
across pins 13 and 19 ( Remote Sense). When using the
remote sense pins, Vout (measured directly across pins 10–
12, and 14–17) can be significantly higher than Va, and may
exceed Vo (max). If Va is adjusted upward of Vo(max), the
the minimum input voltage is increased by the same
percentage as Vout exceeds Vo(max).
Adjust Up: An increase in the output voltage is obtained
by adding a resistor, R2 between Vo adjust (pin 18), and
-Remote Sense (pin 13). See note 4.
The values of (R1) [adjust down], and R2 [adjust up], can
also be calculated using the following formulas.
Adjust Down: Add a resistor (R1), between Vo adjust (pin
18), and +Remote Sense (pin 19).
Ko (Va – Vr)
Vr (Vo – Va)
(R1)
=
– Rs
kΩ
Refer to Figure 1 and Tables 2 & 3 for both the placement and
value of the required resistor, (R1) or R2.
Ko
(Va – Vo)
R2
=
– Rs
kΩ
Notes:
1. Use only a single 1% resistor in either the (R1) or R2
location. Place the resistor as close to the ISR as possible.
Where
Vo = Original output voltage
Va = Adjusted output voltage
2. Never connect capacitors to Vo adjust. Any capacitance
added to the Vo adjust control pin will affect the stability of
the ISR.
Vr = Reference voltage (Table 1)
Ko = Multiplier constant (Table 1)
Rs = Series resistance (Table 1)
Table 1
DC/DC CONVERTER ADJUSTMENT RANGE AND FORMULA PARAMETERS
Series Pt #
AL Case:
24V Bus
48V Bus
CU Case:
PT3341
PT3321
PT3342
PT3322
PT3343
PT3323
PT3344
PT3324
PT3327
PT4567
PT3325
PT4565
PT3326
PT4566
24V Bus
48V Bus
PT4585
PT4581
PT4561
PT4582
PT4562
PT4583
PT4563
PT4584
PT4564
PT4571
Vo(nom)
Vo(min)
Vo(max)
Vr
1.8V
1.62V
2.5V
1.225V
69.58
80.6
1.8V
2.0V
1.8V
2.2V
1.225V
62.47
150.0
2.5V
3.3V
5.0V
4.5V
5.5V
1.225V
68.71
121.0
9.0V
7.0V
10.0V
2.5V
133.25
110
12.0V
10.8V
13.2V
2.5V
135.9
90.9
15.0V
13.5V
16.5V
2.5V
137.5
80.6
1.62V
1.98V
1.225V
69.58
80.6
2.25V
2.75V
1.225V
42.33
121.0
2.95V
3.65V
1.225V
68.89
150.0
Ko (V·kΩ)
Rs (kΩ)
Figure 1
2
19
Remote
On/Off
Sns(+)
7, 8,
9
14 - 17
+Vin
+Vout
+V in
30W Isolated
+Vout
-Vin
4, 5,
-Vout
10
Sns(-)
13
Vo(adj)
18
6
- 12
(R1)
Adj Down
L
O
A
D
Cin
100
100V
(Optional)
+
+
µ
F
Cout
330µF
R2
Adj
Up
-Vin
-Vout
For technical support and more information, see inside back cover or visit www.ti.com
Application Notes continued
PT3320/3340/4560/4580 Series
Table 2
DC/DC CONVERTER ADJUSTMENT RESISTOR VALUES
Series Pt #
AL Case
24V Bus
PT3341
PT3321
48V Bus
CU Case
PT3327
PT3325
PT3326
24V Bus
48V Bus
Current
Vo(nom)
Va(req’d)
1.65
1.7
PT4585
PT4581
PT4561
8Adc
PT4567
8Adc
1.8V
PT4565
8Adc
2.0V
PT4566
8Adc
2.5V
8Adc
1.8V
3.3V
(80.3)kΩ
(189.0)kΩ
(516.0)kΩ
(80.3)kΩ
(189.0)kΩ
(516.0)kΩ
1.75
1.8
1.85
1.9
1.95
2.0
2.05
2.1
2.15
2.2
1.31MΩ
615.0kΩ
383.0kΩ
267.0kΩ
198.0kΩ
151.0kΩ
118.0kΩ
93.3kΩ
1.31MΩ
615.0kΩ
383.0kΩ
(62.5)kΩ
(194.0)kΩ
(589.0)kΩ
1.1MΩ
475.0kΩ
266.0kΩ
162.0kΩ
2.25
2.3
2.35
2.4
2.45
2.5
74.0kΩ
58.6kΩ
45.9kΩ
35.4kΩ
26.4kΩ
18.8kΩ
(20.7)kΩ
(64.7.0)kΩ
(138.0)kΩ
(285.0)kΩ
(726.0)kΩ
2.55
2.6
2.65
2.7
2.75
2.95
3.0
726.0kΩ
302.0kΩ
161.0kΩ
90.6kΩ
48.3kΩ
(127.0)kΩ
(183.0)kΩ
(261.0)kΩ
(377.0)kΩ
(572.0)kΩ
(961.0)kΩ
(2.13)MΩ
3.05
3.1
3.15
3.2
3.25
3.3
3.35
3.4
3.45
3.5
3.55
3.6
1.23MΩ
539.0kΩ
309.0kΩ
194.0kΩ
126.0kΩ
79.6kΩ
3.65
46.8kΩ
R1 = (Blue)
R2 = Black
For technical support and more information, see inside back cover or visit www.ti.com
Application Notes
PT3320/3340/4560/4580 Series
Table 3
DC/DC CONVERTER ADJUSTMENT RESISTOR VALUES
Series Pt #
AL Case
24V Bus
48V Bus
PT3342
PT3322
PT3343
PT3323
PT3344
PT3324
CU Case
24V Bus
48V Bus
Current
Vo(nom)
Va(req’d)
4.5
PT4582
PT4562
6Adc
PT4583
PT4563
2.5Adc
12.0V
PT4584
PT4564
2.0Adc
15.0V
PT4571
3.3Adc
9.0V
5.0V
Va(req’d)
7.0
7.2
7.4
7.6
7.8
8.0
8.2
8.4
(246.0)kΩ
(293.0)kΩ
(352.0)kΩ
(428.0)kΩ
(529.0)kΩ
(670.0)kΩ
(882.0)kΩ
(1.23)MΩ
(1.94)MΩ
(9.9)kΩ
(29.2)kΩ
(53.2)kΩ
(84.2)kΩ
(125.0)kΩ
(183.0)kΩ
(270.0)kΩ
(414.0)kΩ
(703.0)kΩ
(1.57)MΩ
4.55
4.6
4.65
4.7
4.75
4.8
4.85
4.9
8.6
8.8
9.0
4.95
5.0
5.05
5.1
5.15
5.2
5.25
5.3
5.35
5.4
9.2
9.4
9.6
9.8
10.0
•
10.8
11.0
11.2
11.4
11.6
11.8
12.0
12.2
12.4
12.6
12.8
13.0
13.2
•
556.0kΩ
223.0kΩ
112.0kΩ
56.6kΩ
23.3kΩ
566.0kΩ
337.0kΩ
223.0kΩ
154.0kΩ
108.0kΩ
75.3kΩ
50.8kΩ
31.7kΩ
16.4kΩ
(285.0)kΩ
(371.0)kΩ
(500.0)kΩ
(715.0)kΩ
(1.15)MΩ
5.45
5.5
588.0kΩ
249.0kΩ
136.0kΩ
78.9kΩ
45.0kΩ
22.3kΩ
13.5
13.6
13.8
14.0
14.2
14.4
14.6
14.8
15.0
15.2
15.4
15.6
15.8
16.0
16.5
(323.0)kΩ
(355.0)kΩ
(437.0)kΩ
(522.0)kΩ
(724.0)kΩ
(1010.0)kΩ
(1.58)MΩ
607.0kΩ
263.0kΩ
149.0kΩ
91.3kΩ
56.9kΩ
11.1kΩ
R1 = (Blue)
R2 = Black
For technical support and more information, see inside back cover or visit www.ti.com
Application Notes
PT3320/3340/4560/4580 Series
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).
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, Q1 is a low-threshold MOSFET. The
components R1 and C1 are added to improve noise
susceptibility.
The Remote On/Off function is provided by pin 2. If
pin 2 is left open-circuit, the converter provides a regu-
1
lated output whenever a valid source voltage is applied
Figure 1
between +Vin (pins 7-9), and –Vin (pins 4-6). Applying
a low voltage 2, with respect to –Vin (pin 2), disables the
regulator output 3. Table 1 details the control requirements
for this input. Figure 1 shows how a discrete MOSFET
(Q1) may be referenced to the negative input voltage rail
to control the Remote On/Off pin.
2
1 9
Remote
On/Off
Sns(+)
7, 8,
9
14 - 17
+Vin
+Vout
+Vin
30W Isolated
+Vo
-Vin
-Vout
10
Sns(-)
1 3
Vo(adj)
1 8
4, 5,
6
- 12
+
+
Cin
Cout
Q1
BSS138
Table 1 Remote On/Off Control Requirements 2
C1
0.01µF
Parameter
min
max
-Vin
–Vo
5
4
Enable (VIH
Disable (VIL
)
)
2.5V
15V (or open circuit)
0.8V
–0.3V
R1
,
10k
R1 & C1 -See Note 7
OFF/ ON
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.
Turn-On Time: When the Remote On/Off input is left
open-circuit, the output of the converter is automatically
1
enabled when a valid input voltage 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 Q1
is turned off. The turn off of Q1 correlates with the fall
of the Q1 Vgs waveform. The waveforms were measured
with a 48Vdc input voltage, and 5-A resistive load.
Table 2 UVLO Thresholds
Series
UVLO Threshold
Vin Range
PT3320/4560
PT3340/4580
34 2.0V
16.5 1.5V
36 – 75V
18 – 60V
2. The Remote On/Off control pin uses –Vin (pins 4-6) as its
ground reference. All voltages specified are with respect to
–Vin.
3. When the converter output is disabled the current drawn
from the input supply is typically reduced to 8mA (16mA
maximum).
Figure 2
4. The internal circuitry comprises of a high impedance (3µA
-10µA) current source. The open-circuit voltage is less
than 10V.
Vo (2V/Div)
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 VIH(min)
(see Table 1). Do not use a pull-up resistor to the +Vin
input, or drive the pin above VIH(max).
Iin (0.5A/Div)
Q1Vgs (10V/Div)
HORIZ SCALE: 2ms/Div
For technical support and more information, see inside back cover or visit www.ti.com
Application Notes
PT3320/3340 Series
VDE Approved Installation Instructions (Installationsanleitung)
Nennspannnug (Rated Voltage):
Nennaufnahme (Rated Input):
Nennleistung (Rated Power):
PT3320 36 to 72 Vdc, Transient to 75Vdc
PT3340 18 to 60 Vdc
PT3320 1.5 Adc
PT3340 3.0 Adc
30 Watts Maximum
Ausgangsspannung (Sec. Voltage): PT3320 Series
PT3321, 3.3 Vdc, 8.0 Adc
PT3322, 5.0 Vdc, 6.0 Adc
PT3340 Series
PT3341, 3.3 Vdc, 8.0 Adc
PT3342, 5.0 Vdc, 6.0 Adc
Ausgangsstrom (Sec. Current):
oder (or)
Ausgangsleistung (Sec. Power):
PT3323, 12.0 Vdc, 2.5 Adc PT3343,12.0 Vdc, 2.5 Adc
PT3324, 15.0 Vdc, 2.0 Adc PT3344,15.0 Vdc, 2.0 Adc
PT3325, 2.0 Vdc, 8.0 Adc
PT3326, 2.5 Vdc, 8.0 Adc
PT3327, 1.8 Vdc, 8.0 Adc
PT3328, 5.2 Vdc, 6.0 Adc
PT3329, 6.0 Vdc, 5.0 Adc
PT3330, 8.0 Vdc, 3.75 Adc
PT3331, 9.0 Vdc, 3.3 Adc
Angabe der Umgebungstemperatur
(Information on ambient temperature): +85°C Ambient or 100°C Case Maximum
Besondere Hinweise (Special Instructions):
Es ist vorzusehen, daß die Spannungsversorgung in einer Endanwendung über 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,
Ort / Place:
Datum / Date:
VDE Prüf- und Zertifizierungsinstitut
Abteilung / Department TD
(Stempel u/ Stamp
and signature of the manufacturer)
(Jürgen Bärwinkel)
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