SMFL SERIES
65 WATT
90
16 VIN
85
80
75
70
65
60
0
10
20 30 40 50 60 70
40 VIN
28 VIN
DC/DC C
ONVERTERS
0.
20.
Typical Performance Curves: 25°C Tc , 28 VDC Vin, 100% load, free run, unless otherwise specified.
Attenuation (dB)
Efficiency (%)
100mV/div.
20V/div.
Vout
40.
60.
80.
Vin
100.
0.1
1
10
100
Output Power (Watts)
Frequency (kHz)
SMFL2828S Efficiency
SMFL Series Audio Rejection
50
µs/div
16 to 40 V
SMFL2805S Step Line Response
F
IGURE
7
F
IGURE
8
F
IGURE
9
100% to 50%
20V/div.
Vin
20V/div.
100mV/div.
1ms/div
No Load
Vin
+Vout
100mV/div.
1V/div.
50% to 100%
Vout
–Vout
1ms/div
SMFL2805S Step Load Response
SMFL2805S Turn On Response
50
µs/div
16 to 40 V
SMFL2815D Step Line Response
F
IGURE
10
F
IGURE
11
8
F
IGURE
12
20V/div.
50% to 100%
–Pout = 32.5W
–Vout Voltage Change (%)
6
4
2
0
–2
–4
–6
–8
30
40
50
60
70
SMFL2805D
SMFL2812D
SMFL2815D
VIN
+Vout
200mV/div.
100% to 50%
5V/div.
–Vout
1ms/div
SMFL2815D Step Load Response
1ms/div
No Load
SMFL2815D Turn On Response
Output Load (%)
+Pout 80 to 20 %, –Pout 20 to 80%
Cross Regulation
F
IGURE
13
16
SMFL2815S & 15D
F
IGURE
14
F
IGURE
15
Input Voltage (Volts)
15
14
13
SMFL2805S & 5D
12
SMFL2812S & 12D
11
10
20
30
40
50
60 65
Output Power (Watts)
Low Line Dropout
F
IGURE
16
6
INTERPOINT [ INTERPOINT CORPORATION COMPANY ]
