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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SERIES:
PQB3-D
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DESCRIPTION:
DC-DC CONVERTER
date
08/12/2015
│
page
2 of 6
MODEL
(CONTINUED)
PQB3-D48-D5-D
PQB3-D48-D12-D
PQB3-D48-D15-D
Notes:
input
voltage
typ
(Vdc)
range
(Vdc)
output
voltage
(Vdc)
min
(mA)
output
current
max
(mA)
output
power
max
(W)
ripple
and noise
2
typ
(mVp-p)
efficiency
typ
(%)
48
48
48
36~75
36~75
36~75
±5
±12
±15
±15
±6
±5
±300
±125
±100
3
3
3
80
80
80
82
84
85
1. UL approved
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.
PART NUMBER KEY
PQB3 - DXX -
XXX
- D
Base Number
Input Voltage
Output
S = single
D = dual
Output Voltage
Packaging Style
DIP
INPUT
parameter
operating input voltage
conditions/description
5 Vdc input models
12 Vdc input models
24 Vdc input models
48 Vdc input models
5 Vdc input models
12 Vdc input models
24 Vdc input models
48 Vdc input models
for maximum of 1 second
5 Vdc input models
12 Vdc input models
24 Vdc input models
48 Vdc input models
pi filter
-0.7
-0.7
-0.7
-0.7
min
4.5
9
18
36
typ
5
12
24
48
max
9
18
36
75
4.5
9
18
36
12
25
50
100
units
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
start-up voltage
surge voltage
filter
OUTPUT
parameter
line regulation
load regulation
voltage accuracy
no-load voltage accuracy
voltage balance
3
switching frequency
transient recovery time
transient response deviation
temperature coeffecient
Notes:
conditions/description
full load, input voltage from low to high
5% to 100% load
min
typ
±0.2
±0.2
±1
±1.5
max
±0.5
±0.5
±3
±5
±1
2
±5
±0.03
units
%
%
%
%
%
kHz
ms
%
%/°C
dual output, balanced loads
100% load, nominal input voltage, PFM mode
25% load step change
25% load step change
100% load
±0.5
200
0.5
±2
±0.02
3. For dual output models, unbalanced loads should not exceed ±5%. If ±5% is exceeded, it may not meet all specifications.
PROTECTIONS
parameter
short circuit protection
4
Notes:
4. The supply voltage must be discontinued at the end of the short circuit duration
conditions/description
min
typ
max
1
units
s
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SERIES:
PQB3-D
│
DESCRIPTION:
DC-DC CONVERTER
date
08/12/2015
│
page
3 of 6
SAFETY AND COMPLIANCE
parameter
isolation voltage
isolation resistance
safety approvals
1
conducted emissions
radiated emissions
ESD
radiated immunity
EFT/burst
surge
conducted immunity
voltage dips & interruptions
MTBF
RoHS
Notes:
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 A; class B (external circuit required, see Figure 1-b)
CISPR22/EN55022, class A; class B (external circuit required, see Figure 1-b)
IEC/EN61000-4-2, class B, contact ± 4kV/air ± 8kV
IEC/EN61000-4-3, class A, 10V/m
IEC/EN61000-4-4, class B, ± 2kV (external circuit required, see Figure 1-a)
IEC/EN61000-4-5, class B, ± 2kV (external circuit required, see Figure 1-a)
IEC/EN61000-4-6, class A, 3 Vr.m.s
IEC/EN61000-4-29, class B, 0%-70%
as per MIL-HDBK-217F @ 25°C
2011/65/EU
1,000,000
hours
1. See specific model noted on page 1
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
min
typ
max
300
260
units
°C
°C
MECHANICAL
parameter
dimensions
case material
weight
conditions/description
31.60 x 20.30 x 10.20 (1.244 x 0.799 x 0.402 inch)
plastic (UL94-V0)
14
g
min
typ
max
units
mm
MECHANICAL DRAWING
units: mm[inch]
tolerance: ±0.50[±0.020]
pin section tolerance: ±0.10[±0.004]
PIN CONNECTIONS
PIN
2, 3
9
10,15
11
14
16
22, 23
NC: No Connection
Front View
Single Output
GND
NC
NC
NC
+Vo
0V
Vin
Dual Output
GND
0V
NC
-Vo
+Vo
0V
Vin
Bottom View
PCB Layout
Top View
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SERIES:
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DESCRIPTION:
DC-DC CONVERTER
date
08/12/2015
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page
4 of 6
DERATING CURVES
Wave Soldering Profile
Peak Temp. 260°C Max.
250
Wave Soldering Time
4 Sec. Max.
Temperature Derating Curve
100
80
60
40
20
200
Temperature (°C)
10 Sec. Max.
150
Load (%)
Safe operating area
100
50
0
-40
-20
0
20
40
60
85
105
120
Ambient Temperature (°C)
Time (sec.)
EMC RECOMMENDED CIRCUIT
FUSE
LDM1
Vin
+
Vin
+Vo
C3
LOAD
Figure 1
GND
MOV
C0
C1
C2
DCDC
GND
-Vo
(0V)
(a)
(b)
CY 1
Recommended external circuit components
Vin (Vdc)
FUSE
MOV
Table 1
C0
C1
LDM1
C2
C3
CY1
--
1000μF/16V
4.7μF/50V
12μH
4.7μF/50V
10μF
1nF/2kV
5
12
S14K25
1000μF/25V
4.7μF/50V
12μH
4.7μF/50V
10μF
1nF/2kV
24
S14K35
330μF/50V
4.7μF/50V
12μH
4.7μF/50V
10μF
1nF/2kV
48
S14K60
330μF/100V
4.7μF/100V
12μH
4.7μF/100V
10μF
1nF/2kV
choose according to practical input current
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CUI Inc
│
SERIES:
PQB3-D
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DESCRIPTION:
DC-DC CONVERTER
date
08/12/2015
│
page
5 of 6
APPLICATION NOTES
1.
Output load requirement
To ensure this module can operate efficiently and reliably, the minimum output load may not be less than 5% 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.
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 2 & Table 2). 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 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 3).
Figure 2
2.
Si ngle
Vin
Cin
D ual
+Vo
Vin
Cin
DC
DC
Cout
+Vo
0V
-Vo
Cout
DC
DC
GND
0V
GND
Cout
Table 2
Vin
(Vdc)
5
12
24
48
Cin
(µF)
100
100
10~47
10~47
Cout
(µF)
10
10
10
10
Single
Vout
(Vdc)
3.3
5
12
15
24
Note:
Table 3
Max. Capacitive
Load
(μF)
4700
4700
2700
2200
1800
1. For each output.
Dual
Vout
(Vdc)
--
5
9
12
15
Max. Capacitive
Load
1
(μF)
--
2200
2000
1800
1000
3.
Input Current
When it is used in an unregulated condition, make sure that the input fluctuations and ripple voltage do not exceed the module
standard. Refer to Figure 3 and Table 4 for the startup current of this dc-dc module.
Figure 3
Input Current(A)
Table 4
Vin
(Vdc)
5
12
Ip
(mA)
1400
620
310
150
Ip
Input Voltage
Range
24
48
Input Voltage (V)
Note:
1. Minimum load shouldn't be less than 5%, otherwise ripple may increase dramatically. Operation under minimum load will not damage the converter, however, they may
not meet all specifications listed.
2. Maximum capacitive load is tested at input voltage range and full load.
3. All specifications are measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified.
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