2. Ripple and noise are measured at 20 MHz BW by “parallel cable” method with 1
μF
ceramic and 10
μF
electrolytic capacitors on the output.
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DC-DC CONVERTER
date
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PART NUMBER KEY
PDS1 - SXX - SXX -S
Base Number
Input Voltage
Output Voltage
Packaging Style
SIP
INPUT
parameter
conditions/description
3.3 Vdc input models
5 Vdc input models
12 Vdc input models
15 Vdc input models
24 Vdc input models
for maximum of 1 second
3.3 Vdc input models
5 Vdc input models
12 Vdc input models
15 Vdc input models
24 Vdc input models
capacitance
fi
lter
min
2.97
4.5
10.8
13.5
21.6
-0.7
-0.7
-0.7
-0.7
-0.7
typ
3.3
5
12
15
24
max
3.63
5.5
13.2
16.5
26.4
5
9
18
21
30
units
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
operating input voltage
surge voltage
fi
lter
OUTPUT
parameter
line regulation
conditions/description
for Vin change of 1%
3.3 Vdc output models
all other models
measured from 10% load to full load
3.3 Vdc output models
5 Vdc output models
9 Vdc output models
12 Vdc output models
15 Vdc output models
24 Vdc output models
see tolerance envelope curve
100% load, nominal input voltage
100% load
100
300
±0.03
kHz
%/°C
18
12
8
7
6
5
min
typ
max
±1.5
±1.2
units
%
%
%
%
%
%
%
%
load regulation
voltage accuracy
switching frequency
temperature coefficient
PROTECTIONS
parameter
short circuit protection
conditions/description
automatic recovery
min
typ
max
units
SAFETY AND COMPLIANCE
parameter
isolation voltage
isolation resistance
safety approvals
1
conducted emissions
radiated emissions
ESD
MTBF
RoHS
Note:
conditions/description
input to output for 1 minute at 1 mA max.
input to output at 500 Vdc
UL 60950-1
min
1,500
1,000
typ
max
units
Vdc
MΩ
CISPR22/EN55022, class B (external circuit required, see Figure 1)
CISPR22/EN55022, class B (external circuit required, see Figure 1)
IEC/EN61000-4-2, class B, contact ±8kV
as per MIL-HDBK-217F @ 25°C
2011/65/EU
3,500,000
hours
1. See specific models noted on page 1
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ENVIRONMENTAL
parameter
operating temperature
storage temperature
storage humidity
temperature rise
non-condensing
at full load, Ta = 25°C
25
conditions/description
see derating curve
min
-40
-55
typ
max
105
125
95
units
°C
°C
%
°C
SOLDERABILITY
parameter
hand soldering
wave soldering
conditions/description
1.5 mm from case for 10 seconds
see wave soldering profile
Peak Temp. 260°C Max.
250
Wave Soldering Time
4 Sec. Max.
min
typ
max
300
260
units
°C
°C
200
Temperature (°C)
10 Sec. Max.
150
100
50
0
Time (sec.)
MECHANICAL
parameter
dimensions
case material
weight
conditions/description
11.60 x 6.00 x 10.10 (0.457 x 0.236 x 0.398 inch)
plastic (UL94-V0)
1.2
g
min
typ
max
units
mm
MECHANICAL DRAWING
units: mm[inch]
tolerance: ±0.25[±0.010]
pin section tolerance: ±0.10[±0.004]
PIN CONNECTIONS
PIN
1
2
3
4
Function
GND
Vin
0V
+Vo
Front View
Bottom View
PCB Layout
Top View
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DERATING CURVES
Tolerance Envelope Curve
10
Temperature Derating Curve
Output Voltage Accuracy (%)
7.5
5
2.5
0
-2.5
-5
-7.5
-10
10
20
30
40
50
60
70
80
90
100
-7.5
100
Rated Output Voltage
-2.5
Load (%)
Typica
l
Load
Line
2.5
80
60
Safe operating area
40
20
Output Current Percentage (%)
(Nominal Input Voltage)
-40
-20
0
20
40
60
85
105
120
Ambient Temperature (°C)
EMC RECOMMENDED CIRCUIT
Figure 1
L DM
Vin
Vin
+Vo
Table 1
Recommended external circuit components
Vin
(Vdc)
L O AD
0V
C0
4.7μF/50V
4.7μF/50V
4.7μF/50V
4.7μF/50V
4.7μF/50V
LDM
6.8μH
6.8μH
6.8μH
6.8μH
6.8μH
C0
G ND
EU T
G ND
3.3
5
12
15
24
TEST CONFIGURATION
Figure 2
Table 2
External components
Oscilloscope
Lin
Cin
Current
Probe
Lin
Cin
4.7μH
220μF, ESR < 1.0Ω
at 100 kHz
DC DC
Load
Note: Input reflected-ripple current is measured with an inductor Lin and Capacitor Cin to simulate source impedance.
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APPLICATION NOTES
1.
Output load requirement
To ensure this module can operate efficiently and reliably, the minimum output load may not be less than 10% of the full load during
operation. If the actual output power is low, connect a resistor at the output end in parallel to increase the load.
Overload Protection
Under normal operating conditions, the output circuit of this product has no protection against overload. The simplest method to add
this is to add a circuit breaker to the circuit.
Recommended circuit
This series has been tested according to the following recommended testing circuit before leaving the factory. This series should be
tested under load (see Figure 3 & Table 3). If you want to further decrease the input/output ripple, you can increase the capacitance
accordingly or choose capacitors with low ESR. However, the capacitance of the output
fi
lter capacitor must be appropriate. If the
capacitance is too high, a startup problem might arise. For every channel of the output, to ensure safe and reliable operation, the
maximum capacitance must be less than the maximum capacitive load (see Table 4).
Figure 3
2.
3.
Vin
Cin
+Vo
DC DC
Cout
GND
Table 3
Vin
(Vdc)
3.3
5
12
15
24
--
Note:
0V
Table 4
Cout
(μF)
10
10
4.7
2.2
1
0.47
Vout
(Vdc)
3.3
5
9
12
15
24
Max. Capacitive Load
(μF)
220
220
220
220
220
220
Cin
(μF)
4.7
4.7
2.2
1
1
--
Vo
(Vdc)
3.3
5
9
12
15
24
It’s not recommended to connect any
external capacitors in applications with
less than 0.5 watt output.
Note:
1.
2.
3.
4.
Operation under minimum load will not damage the converter; however, they may not meet all specifications listed.
Max. capacitive load tested at input voltage range and full load.
It is recommended to use either ceramic capacitors or electrolytic capacitors on the input and the output. Using tantalum capacitors may increase the risk of failure.
All specifications measured at: Ta=25°C, humidity<75%, nominal input voltage and rated output load, unless otherwise specified.
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