DC/DC C
ONVERTERS
SMHF SERIES
SINGLE AND DUAL
15 WATT
Typical Performance Curves: 25°C Tc , 28 VDC Vin, 100% load, free run, unless otherwise specified.
20V/div.
100% to 10%
100mV/div.
200mV/div.
20V/div.
POUT= 12W
VIN
+VOUT
10% to 100%
1V/div.
VOUT
VIN
200µs/div
10% 100%
2 ms/div
1 ms/div
16V TO 40V
SMHF2805S STEP LOAD RESPONSE
SMHF2805S TURN-ON INTO FULL LOAD
SMHF2815D STEP LINE RESPONSE
F
IGURE
12
F
IGURE
13
F
IGURE
14
100% to 50%
PO= 7.5 W
PO= 7.5 W
–VOUT
100% to 20%
100mV/div.
100mV/div.
5V/div.
+VOUT
20% to 100%
20V/div.
50µs/div
20% 100%
SMHF+2815D VOUT STEP LOAD RESPONSE
50% to 100%
VIN
50µs/div
50% 100%
SMHF2815D +V
STEP LOAD RESPONSE
2 ms/div
SMHF2815D TURN-ON INTO FULL LOAD
F
IGURE
15
F
IGURE
16
F
IGURE
17
10
–V
OUT
VOLTAGE CHANGE (%)
10
8
6
2805D
2812D
COND A
16
SMHF2805S&D
–V
OUT
VOLTAGE CHANGE (%)
5
2812D
2815D
0
INPUT VOLTAGE (Volts)
4
2
0
–2
–4
–6
–8
10
20
15
2815D
COND B
2812D
2805D
30
40
50
14
–5
2805D
13
SMHF2812S&D
SMHF2815S&D
–10
0
20
40
60
80
100
–10
12
10
11
12
13
14
15
POSITIVE OUTPUT LOAD (% OF TOTAL LOAD)
–V
OUT
WITH SHIFT IN LOAD BALANCE
CROSS REGULATION
OUTPUT LOAD (%)
COND. A: 50% LOAD +V; 50% to 10% –V
COND. B: 50% LOAD –V; 50% to 10% +V
OUTPUT POWER (Watts)
50 mV DROP
LOW LINE DROPOUT VS. LOAD
SMHF2805D/SMHF2812D/SMHF2815D
CROSS REGULATION
F
IGURE
18
F
IGURE
19
F
IGURE
20
39
INTERPOINT [ INTERPOINT CORPORATION COMPANY ]
