FMTR SERIES
30 WATT
8
+VIN
OUTPUT
COMMON
SENSE
RETURN
SENSE
INPUT
COMMON
POSITIVE
OUTPUT
DC/DC C
ONVERTERS
TRIM AND REMOTE SENSE (AVAILABLE ON SINGLE OUTPUT MODELS ONLY)
FMTR SINGLE OUTPUT CONVERTER
8
1
9
12
1
RT
11
7
RL
SENSE
INPUT
COMMON
POSITIVE
OUTPUT
+VIN
OUTPUT
COMMON
SENSE
RETURN
10
2
9
12
2
RL
10
FMTR SINGLE OUTPUT CONVERTER
7
11
EXTERNAL TRIM CONNECTION
1 Make connections at converter.
REMOTE SENSE CONNECTION
2 Make connections at load.
F
IGURE
2: T
RIM
C
ONNECTION1, 2, 3
Trim Formulas
Vout = desired output voltage; Rt = trim resistor
3.3V: Rt = 1300 * Vout – 4304
1.2475
5V: Rt = 1300 * Vout – 6512
1.2475
12V: Rt = 1300 * Vout – 15631
1.2475
15V: Rt = 1300 * Vout – 19498
1.2475
F
IGURE
3: R
EMOTE
S
ENSE2, 3
Notes for Remote Sense and Trim
1. When trimming output voltage and/or remote sensing, the total
output voltage increase must be less than 0.6 volts at the converters
pins to maintain specified performance.
2. If neither voltage trim nor remote sense will be used, connect pin 9
to pin 10 and pin 11 to pin 12 or the output voltage will increase by
1.2 volts
3. CAUTION: The converter will be permanently damaged if the posi-
tive remote sense (pin 12) is shorted to ground. Damage may also
result if the output common or positive output is disconnected from
the load with the remote sense leads connected to the load.
PIN OUT
Angled corner indicates pin one.
Pin
1
2
3
4
5
6
7
8
9
10
11
12
Single Output
Sync
Inhibit/Sync Rtn
Filter Out Rtn
Filter Out
Inhibit
No connection
Input Common
28 V Input
Sense Rtn
Output Common
Positive Output
Positive Sense
Dual Output
Sync
Inhibit/Sync Rtn
Filter Out Rtn
Filter Out
Inhibit
No connection
Input Common
28V Input
No connection
Negative Output
Output Common
Positive Output
1
2
3
4
5
6
12
11
TOP VIEW
FMTR
(Pin side, marked side)
10
9
8
7
See page 7 for dimensions.
F
IGURE
4: P
IN
O
UT
4
CRANE [ Crane Aerospace & Electronics. ]
