PAF600F280-28 TDK Corporation, PAF600F280-28 Datasheet - Page 27

• Manufacturer Part Number: PAF600F280-28
• Description: 28V@21.5A
• Manufacturer: TDK Corporation

・All specifications are subject to change without notice.
PAF
Note）1. Use low impedance electrolytic capacitor with
2. For 12V, 28V models, use capacitors indicated
3. Take note of the allowable ripple current of the
C4 ：
When switches or connectors are used between input
source and PAF500, 600, 700F48 Series input terminals,
impulse surge voltage is generated due to input throw-
in by switch on/off or due to inserting/removing of power
module from the active line. For this case, connect an ad-
ditional electrolytic capacitor C4 as shown in fig.1-3 and
fig.1-4.
Also, in-rush current flows at line throw-in. Therefore, be
sure to verify capability of switch or fuse to withstand I
line throw-in.
D1 ：
Only for 3.3V and 5V models, for stable output operation
at momentary input voltage line-drop, connect small VF
value schottky barrier diode D1.
Reverse input connections
Reverse input polarity would cause module damage. For
cases where reverse connections are possible, connect a
protective diode or fuse. Use protective diode with higher
voltage rating than the input voltage, and with higher surge
current rating than the fuse.
Recommended Capacitance Value: 100μF and above
Recommended reverse voltage rating: 30V and above
Recommended current rating: 100mA and above
500F48, 600F48, 700F48
Fig.1-4 Input Filter when Plural Power
excellent temperature characteristics.
(Nippon Chemicon LXY Series or equivalent)
above in parallel when ambient temperature be-
comes lower than –20℃ to reduce ESR.
Quantity for capacitors are as follows.
capacitor to be used. Especially, when load
adding capacitors for abrupt current changes,
be sure to verify that ripple current does not ex-
ceed allowable ripple current before use.
Fig.1-3 Input Filter with Input Switch
(Voltage Rating 100V and above)
Swich
Switch
PAF500F48: 2pcs
PAF600F48: 3pcs
PAF700F48: 4pcs
C4
＋
＋
C4
Fuse
Fuse
Fuse
＋
C1
＋
C1
C1
＋
＋Vin
＋Vin
−Vin
−Vin
＋Vin
−Vin
2
t at
● Recommended input filer as EMI counter-measure
Recommended Values:
C1:
C5:
C6,C7: PAF500F48 - 0.1 μF
C6,C7: PAF600, 700F48 - 0.15μF (Ceramic Capacitor)
L1:
Note） 1. For the power module output, connect output capaci-
2 Output Voltage Adjustment Range
Output voltage could be adjusted within the range de-
scribed below by external resistor or variable resistor, or
by applying external voltage. However, take note that OVP
might trigger when output voltage adjustment exceeds the
ranges indicated below.
Furthermore, when increasing the output voltage reduce
the output current so as not to exceed the maximum output
power.
Also, take note that when output voltage is increased, in-
put voltage range is limited as shown in fig. 2-1.
With the external circuit below, remote sensing is possible
even when output voltage is varied. For details on remote
sensing function, please refer to ” 9. Remote Sensing”
Fig.1-6 Recommended input filer as EMI countermeasure
3.3V, 5V:
12V, 28V
(conforms to VCCI Class 1, FCC class A)
Fig.1-5 Protection for Reversed Connection of Input
PAF500･600F48: -40% to +10% of Nominal Output Voltage
PAF700F48:
2. VCCI Class 1, FCC Class A limits can be satisfied
１mH (Common mode choke coil)
470μF (Electrolytic Capacitor)
2.2μF (Ceramic Capacitor)
with the above recommended filter at Densei-Lambda
measuring conditions. However, there are cases where
above limits might not be satisfied due to input and
output wiring method, as well as, peripheral circuits.
When selecting input filter, be sure to verify actual
EMI characteristics (CE and RE) before finalizing the
filter. Refer to PAF500F48-＊ or PAF600F48-＊ or
PAF700F48-＊ Evaluation Data for details.
tors described in the basic circuit connection.
Output Voltage Adjustment Range
Fuse
Fuse
C5
-40% to +20% of Nominal Output Voltage
-40% to +15% of Nominal Output Voltage
＋Vin
−Vin
L1
C6
＋
C1
C7
＋V
−V
＋Vin
−Vin
Baseplate
Load
B-119
PAF