DC/DC C
ONVERTERS
W
ARNING
: E
XTERNAL
C
APACITORS
R
EQUIRED
TRIPLE OUTPUT MODELS
PARAMETER
OUTPUT VOLTAGE
CONDITIONS
16 TO 32 V
IN
BALANCED LOAD
OUTPUT CURRENT
OUTPUT POWER
2
OUTPUT RIPPLE
3
MAIN
AUX
MAIN
AUX
Tc = –55°C TO +85°C
BW DC TO 1 MHz
MAIN
± AUX
LINE REGULATION
16 TO 32 V
IN
NO LOAD TO FULL
MAIN
± AUX
MAIN
± AUX
INPUT VOLTAGE
Tc = –55°C TO +85°C
TRANSIENT 50 ms
NO LOAD
INPUT CURRENT
FULL LOAD
INHIBITED
EFFICIENCY
MSR28512T
MIN
4.9
±11.5
10.0
1
—
—
—
—
—
—
—
—
16
—
—
—
—
65
TYP
5.0
±12.0
—
—
—
50
50
5
3
15
15
28
—
10
—
—
70
MAX
5.1
±12.5
400
±50.0
3.2
100
100
10
6
30
30
32
40
20
176
5
—
MIN
4.9
±14.5
10.0
1
—
—
—
—
—
—
—
—
16
—
—
—
—
65
MSR28515T
TYP
5.0
MAX
5.1
MSR SERIES
4 WATT
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
UNITS
VDC
±15.0 ±15.5
—
—
—
50
50
5
3
15
15
28
—
10
—
—
70
400
±40.0
3.2
100
100
10
7.5
30
30
32
40
20
176
5
—
%
mA
VDC
V
mV
mV
W
mV p-p
mA
LOAD REGULATION
Notes
1. External capacitors required (see Table 2 for specifications).
2. Minimum load required on main output for full power auxiliary operation.
TRIPLE OUTPUT EXTERNAL CAPACITOR
O
PERATION WITHOUT EXTERNAL CAPACITORS WILL RESULT IN DAMAGE TO THE INTERNAL CIRCUITRY
.
TABLE 2: EXTERNAL CAPACITOR REQUIREMENTS
Required
Connection
1
Positive 5 VDC Output (9) to
Output Common (6 or 7)
Minimum
Capacitor Value
2
220 µF, 10 V
POSITIVE
INPUT
1, 2
INHIBIT
15
INPUT
COMMON
17, 18
FEEDBACK
+5 OUTPUT
9
REF. &
COMP
OUTPUT
COMMON
6, 7
8
POSITIVE
AUXILIARY
OUTPUT
5
NEGATIVE
AUXILIARY
OUTPUT
220µF
EXTERNAL
CAPACITOR
Model
MSR28512T
and
MSR28515T
LOGIC
TIMING
CONTROL
SWITCH
DUAL
TRACKING
REGULATOR
Notes – Table 2
1. See Figure 2 for connection diagram.
2. Capacitors should be high quality, low ESR components —
solid tantalum is recommended.
F
IGURE
2:
T
RIPLE
O
UTPUT
E
XTERNAL
C
APACITOR
C
ONNECTIONS
B4-29
INTERPOINT [ INTERPOINT CORPORATION COMPANY ]
