F0505T-1W_10 Datasheet, PDF (2/3 Pages) Crystek Corporation – 1W, FIXED INPUT, ISOLATED & UNREGULATED DUAL/SINGLE OUTPUT DC-DC CONVERTER

ISOLATION SPECIFICATIONS
Item
Test Conditions
Isolation voltage
Tested for 1 minute and 1mA max
Isolation resistance
Test at 500VDC
Min.
3000
1000
Typ. Max. Units
VDC
MΩ
OUTPUT SPECIFICATIONS
Item
Test Conditions
Min. Typ. Max. Units
Output power
Line regulation
0.1
For Vin change of ±1%(3.3V output)
For Vin change of ±1%(Others output)
1
W
±1.5
±1.2
10% to 100% load (3.3V output)
15 20
Load regulation
10% to 100% load (5V output)
10% to 100% load (9V output)
10% to 100% load (12V output)
12.8 15
%
8.3 10
6.8 10
10% to 100% load (15V output)
6.3 10
10% to 100% load (24V output)
6.0 10
Output voltage accuracy
Temperature drift
100% full load
See tolerance envelope
gra_±p0h.03 _%/°C
Output ripple &Noise*
20MHz
Bandwidth
E_T-1W series
F_T-1W series
50 75
mVp-p
75 100
Switching frequency
24V input
Full load, nominal input
Others
500
kHz
100
*Test ripple and noise by “parallel cable” method. See detailed operation instructions at Testing of Power
Converter section, application notes.
RECOMMENDED REFLOW SOLDERING PROFILE
2 50
26 0^oC
10 S ec Max
2 00
2 2 0^o C
1 50
90 Sec Max
1 00
( >2 2 0^oC )
50
0
Time (sec.)
Remark: The curve applies only to the hot air reflow soldering
APPLICATION NOTE
TYPICAL CHARACTERISTICS
Operating Temp.(^oC)
RECOMMENDED CIRCUIT
Dual Output
L
Vin
Cin
GND
DC DC
L
+Vo
Cout
0V
L ^Cout
-Vo
Single Output
L
Vin
L
+Vo
Cin
GND
DC DC
Cout
0V
(Figure 1)
1) Requirement on output load
To ensure this module can operate efficiently and reliably, During operation, the minimum
output load could not be less than 10% of the full load. If the actual output power is very
small, please connect a resistor with proper resistance at the output end in parallel to
increase the load, or use our company’s products with a lower rated output power
(E _T-W2/F_T-W2 Series).
2) Recommended testing circuit
If you want to further decrease the input/output ripple, an “LC” filtering network may be
connected to the input and output ends of the DC/DC converter, see (Figure 1).
It should also be noted that the inductance and the frequency of the “LC” filtering network
should be staggered with the DC/DC frequency to avoid mutual interference. However, the
capacitance of the output filter capacitor must be proper. If the capacitance is too big, a
startup problem might arise. For every channel of output, provided the safe and reliable
operation is ensured, the greatest capacitance of its filter capacitor sees (Table 1).
3) Output Voltage Regulation and Over-voltage Protection Circuit
The simplest device for output voltage regulation, over-voltage and over-current
protection is a linear voltage regulator with overheat protection that is connected to the input
or output end in series (Figure2).
4) Overload Protection
Under normal operating conditions, the output circuit of these products has no protection
against overload. The simplest method is to connect a self-recovery fuse in series at the
input end or add a circuit breaker to the circuit.
Dual O u tput
Vi n
R EG
REG
DC DC
GN D
REG
S ingle O utput
Vi n
R EG
REG
DC DC
GN D
(Figure2)
+Vout
0V
- Vo ut
+Vout
0V
EXTERNAL CAPACITOR TABLE (Table 1)
Vin Cin Single Cout Dual Cout
(VDC) (µF) Vout (µF) Vout (µF)
(VDC)
(VDC)
3.3/5 4.7 5
10 ±3.3/5 4.7
12 2.2 9
4.7 ±9 2.2
24
1
12
2.2 ±12
1
-
-
15
1
±15
1
24 0.47 ±24 0.47
It’s not recommended to connect any external
capacitor in the application field with less than 0.5 watt
output.
5) No parallel connection or plug and play
The copyright and authority for the interpretation of the products are reserved by Mornsun
Specifications subject to change without notice.
E_T-1W&F_T-1W B/0-2010 Page 2 of 3