DC/DC C
ONVERTERS
W
ARNING
: E
XTERNAL
C
APACITORS
R
EQUIRED
TRIPLE OUTPUT MODELS
PARAMETER
1
OUTPUT VOLTAGE
2
HR40 SERIES
4 WATT
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
HR43-2812
CONDITIONS
P
OUT
= 2 W
BALANCED LOAD
OUTPUT CURRENT
OUTPUT POWER
OUTPUT RIPPLE
18 TO 32 V
IN
MAIN
AUX
MAIN
AUX
MIN
4.9
±11.5
10.0
—
—
—
—
—
—
—
—
16
—
—
—
—
68
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
15
—
MIN
4.9
±14.5
10.0
—
—
—
—
—
—
—
—
16
—
—
—
—
68
HR43-2815
TYP
5.0
MAX
5.1
UNITS
VDC
±15.0 ±15.5
—
—
—
50
50
5
3
15
12
28
—
10
—
—
70
400
±40.0
3.2
100
100
10
7.5
30
24
32
40
20
176
15
—
%
mA
VDC
V
mV
mV
W
mV p-p
mA
Tc = –40°C TO +85°C
BW DC TO 1 MHz
P
OUT
= 2 W
18 TO 32 V
IN
MAIN
± AUX
LINE REGULATION
MAIN
± AUX
MAIN
± AUX
LOAD REGULATION
NO LOAD TO FULL
INPUT VOLTAGE
Tc = –40°C TO +85°C
TRANSIENT 50 ms
NO LOAD
INPUT CURRENT
FULL LOAD
INHIBITED
EFFICIENCY
FULL LOAD
Notes
1. External capacitors required to prevent damage to internal circuitry 2. Minimum load required on main output for full power auxiliary oper-
(see Table 2 for specifications).
ation.
TRIPLE OUTPUT EXTERNAL CAPACITOR
O
PERATION WITHOUT EXTERNAL CAPACITORS WILL RESULT IN DAMAGE TO THE INTERNAL CIRCUITRY
.
T
ABLE
2: E
XTERNAL
C
APACITOR
R
EQUIREMENTS
FEEDBACK
Model
HR43-2812
and
HR43-2815
Required
Connection
1
Positive 5 VDC Output (9) to
Output Common (6 or 7)
Minimum
Capacitor Value2
220 µF, 10 V
POSITIVE
INPUT
1, 2
INHIBIT
15
INPUT
COMMON
17, 18
+5 OUTPUT
9
REF. &
COMP
OUTPUT
COMMON
6, 7
8
POSITIVE
AUXILIARY
OUTPUT
5
NEGATIVE
AUXILIARY
OUTPUT
220µF
EXTERNAL
CAPACITOR
LOGIC
TIMING
CONTROL
SWITCH
Table 2 Notes
1. See Figure 2 for connection diagram.
2. Capacitors should be high quality, low ESR components —
solid tantalum is recommended.
DUAL
TRACKING
REGULATOR
F
IGURE
2:
T
RIPLE
O
UTPUT
E
XTERNAL
C
APACITOR
C
ONNECTIONS
B4-53
CRANE [ Crane Aerospace & Electronics. ]
