PBK-1-5 Datasheet, PDF (5/6 Pages) CUI INC – AC-DC POWER SUPPLY

CUI Inc │ SERIES: PBK-1 │ DESCRIPTION: AC-DC POWER SUPPLY
date 08/09/2013 │ page 5 of 6
TYPICAL APPLICATION CIRCUIT
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AC( L)
Figure 2
MOV
AC(N)
L2
3
+Vo _C2
L1
C3 TVS C4 RL
12
C1
+
5 ^AC-DC
+
+
7
10
1
-Vo
(1)
CY0
Note: (1) is Pi filter circuit.
Table 2
Recommended External Circuit Components
V_OUT
(Vdc)
C1¹
L2
C2¹
L1¹
C3¹
C4
CY0
FUSE¹
5 10μF/400V 1mH 150μF/35V 2.2μH 68μF/35V 0.1μF/50V 1nF/400Vac 1A/250V
9 10μF/400V 1mH 150μF/35V 2.2μH 68μF/35V 0.1μF/50V 1nF/400Vac 1A/250V
12 10μF/400V 1mH 100μF/35V 2.2μH 68μF/35V 0.1μF/50V 1nF/400Vac 1A/250V
15 10μF/400V 1mH 100μF/35V 2.2μH 68μF/35V 0.1μF/50V 1nF/400Vac 1A/250V
24 10μF/400V 1mH 100μF/35V 2.2μH 68μF/35V 0.1μF/50V 1nF/400Vac 1A/250V
Note:
1. Required components.
TVS
SMBJ7.0A
SMBJ12A
SMBJ20A
SMBJ20A
SMBJ30A
NTC
5D-9
5D-9
5D-9
5D-9
5D-9
MOV
S14K350
S14K350
S14K350
S14K350
S14K350
EMC RECOMMENDED CIRCUIT
Notes:
F USE
AC( L)
R2
CY1
CY3
Figure 3
AC(N)
MOV
R1
CY2
CX ^R3
LCM
CY4
AC(L)
12
+Vo
C1
+
5 AC-DC
7
- Vo
AC ( N )
10
L1
C2
+
C3
+
OUT PUT
PE
CY0
Table 3
Recommended External Circuit Components
MOV
S14K350
R1, R2
2Ω/3W winding resistor
R3
1MΩ/2W
CY1, CY2,
CY3, CY4
1nF/400Vac
CX
0.22μF/275Vac
LCM
10mH
FUSE
1A/250V, slow blow
Note:
Also refer to Table 2.
1. C1 and C3 are electrolytic capacitors. They are required for both AC input and DC input.
2. For AC input, C1 is used as a filter capacitor. The recommended C1 value is 10 μF/400 V.
3. For DC input, C1 is used as an EMC filter capacitor. The recommended C1 value is 10μF/400V. When the input voltage is above 370VDC, we recommend a 10μF/450V capacitor.
4. C2 and C3 are output filer capacitors, we recommend high frequency and low impedance electrolytic capacitors. For capacitance and rated ripple current of capacitors refer to
the datasheets provided by the manufacturers, voltage derating of capacitors should be 80% or above.
5. C4 is a ceramic capacitor which is used to filter high frequency noise. C2, C3 and L1 form a pi-type filter circuit. For current of L1 and L2 refer to the datasheets provided by
the manufacturers, current derating should be 80% or above. TVS is a recommended component to protect post-circuits (if converter fails). We recommend using a 5D-9
external input NTC.
6. For standard EMC requirements, please refer to figure 2. If a higher EMC is required, please refer to figure 3. Recommended parameters are shown in table 3.
7. All specifications measured at Ta=25C, humidity <75%, 115 Vac & 230 Vac input voltage, and rated output load, unless otherwise specified.
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