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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DESCRIPTION:
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 filter
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
filter
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 curves
100% load, nominal input voltage
100% load
100
±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
1
Notes:
conditions/description
3 & 24 Vdc input models; PDS1-S5-S24-S
all other models: continuous, automatic recovery
min
typ
max
1
units
s
1. The supply voltage must be discontinued at the end of the short circuit duration
SAFETY AND COMPLIANCE
parameter
isolation voltage
isolation resistance
safety approvals
2
conducted/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
CISPR32/EN55032, class B (external circuit required, see Figure 1)
IEC/EN61000-4-2, class B, contact ±8kV
as per MIL-HDBK-217F at 25°C
2011/65/EU
3,500,000
hours
2. 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
MECHANICAL
parameter
dimensions
case material
weight
conditions/description
plastic (UL94-V0)
Time (sec.)
min
typ
max
units
mm
11.60 x 6.00 x 10.16 (0.457 x 0.236 x 0.4 inch)
1.3
g
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
1
2
3
4
1
2
3
4
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DERATING CURVES
Output Voltage Accuracy (%)
Output Voltage Accuracy (%)
10
5
0
-5
-10
-15
Tolerance Envelope Curve
(3.3 Vdc output only)
15
10
5
0
-5
-10
Tolerance Envelope Curve
(all other models)
Typ
i
cal
Max
Loa
dL
ine
Rated Output Voltage
1.0
Typic
al
Max
Load
Line
Min
Rated Output Voltage
-2.5
-7.5
2.5
Min
-7.5
-15
10
Output Current Percentage (%)
(Nominal Input Voltage)
20
40
60
80
100
10
20
40
60
80
100
Temperature Derating Curve
Output Current Percentage (%)
(Nominal Input Voltage)
100
80
60
40
20
Load (%)
Safe operating area
-40
-20
0
20
40
60
85
105
120
Ambient Temperature (°C)
EMC RECOMMENDED CIRCUIT
Figure 1
Table 1
Recommended external circuit components
LDM
Vin
C1
GND
Vin
+Vo
C2
LOAD
Vin
(Vdc)
3.3
5
12
15
24
C1
4.7μF/50V
4.7μF/50V
4.7μF/50V
4.7μF/50V
4.7μF/50V
C2
10μF
4.7μF
2.2μF
1μF
0.47μF
LDM
6.8μH
6.8μH
6.8μH
6.8μH
6.8μH
DC/DC
GND
0V
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:
1. 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
If you want to further decrease the input/output ripple, you can increase the capacitance accordingly or choose capacitors with low
ESR(see Figure 3 & Table 3). However, the capacitance of the output filter 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
GND
Table 3
Vin
(Vdc)
3.3
5
12
15
24
--
Cin
(µF)
4.7
4.7
2.2
2.2
1
--
Vout
(Vdc)
3.3
5
9
12
15
24
Cout
(µF)
10
10
4.7
2.2
1
0.47
DC
DC
Cout
0V
Table 4
Vout
(Vdc)
3.3
5
12
15
24
Max. Capacitive Load
(μF)
220
220
220
220
220
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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