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參數(shù)資料
| 型號(hào)： | SMFL283R3S |
| 廠商： | Standard Power |
| 英文描述： | DC/DC CONVERTERS 28 VOLT INPUT |
| 中文描述： | DC / DC轉(zhuǎn)換28伏的輸入 |
| 文件頁(yè)數(shù)： | 2/10頁(yè) |
| 文件大?。?/td> | 212K |
| 代理商： | SMFL283R3S |
TYPICAL CHARACTERISTICS
SYNC AND INHIBIT (INH1, INH2)
Sync In (525 to 675 kHz)
Duty cycle 40% min, 60% max
Logic low 0.8 V max
Logic high 4.5 V min, 9 V max
Referenced to input common
If not used, connect to input common
Sync Out
Referenced to input common
If not used, leave unconnected
Inhibit (INH1, INH2) TTL Open Collector
Logic low (output disabled)
INH1 referenced to input common
Logic low 0.8 V max
Inhibit pin current 10 mA max
INH2 referenced to output common
Logic low 0.5 V max
Inhibit pin current 5 mA max
Logic high (output enabled)
Open collector
If not used, leave unconnected
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range
16 to 40 VDC continuous
Case Operating Temperature (Tc)
–55°C to +125°C full power
ABSOLUTE MAXIMUM RATINGS
Input Voltage
16 to 40 VDC
Power Dissipation (Pd)
14 watts (16 watts SMFL2805S, SMFL2805D)
Output Power
40 to 65 watts depending on model
Lead Soldering Temperature (10 sec per lead)
300°C
Storage Temperature Range (Case)
–65°C to +150°C
2
SMFLSERIES
65 WATT
DC/DC C
ONVERTERS
Output Voltage Temperature Coefficient
100 ppm/°C typical
Input to Output Capacitance
150 pF, typical
Isolation
100 megohm minimum at 500 V
Audio Rejection
50 dB typical
Conversion Frequency
Free run mode 600 kHz typical
550 kHz. min, 650 kHz max
External sync range 525 to 675 kHz
Inhibit Pin Voltage (unit enabled)
INH1 = 9 to12 V, INH2 = 6 to 9 V
Notes
1. Unit will shut down above approximately 45V but will be undamaged and
will restart when voltage drops into normal range.
2. Indefinite short circuit protection not guaranteed above 125°C case.
3. Recovery time is measured from application of the transient to point at
which Vout is within 1% of final value.
4. Guaranteed but not tested.
SINGLE OUTPUT MODELS
SMFL283R3S
SMFL2805S
SMFL2812S
SMFL2815S
PARAMETER
OUTPUT VOLTAGE
CONDITION
Tc = 25°C
MIN
3.27
TYP MAX
3.3
MIN
4.95
TYP MAX
5.00
MIN
11.88 12.00 12.12
TYP MAX
MIN
14.85 15.00 15.15
TYP MAX
UNITS
VDC
3.33
5.05
OUTPUT CURRENT
V
IN
= 16 TO 40 VDC
V
IN
= 16 TO 40 VDC
Tc = 25°C
Tc = –55°C to +125°C
0
—
12
0
—
10
0
—
5
0
—
4.33
A
OUTPUT POWER
0
—
40
0
—
50
0
—
60
0
—
65
W
OUTPUT RIPPLE
VOLTAGE 10 k - 2 MHz
—
—
10
10
35
50
—
—
15
30
35
50
—
—
30
45
75
100
—
—
30
45
85
110
mV p-p
LINE REGULATION
V
IN
= 16 to 40 VDC
NO LOAD TO FULL
—
0
20
—
0
20
—
0
20
—
0
20
mV
LOAD REGULATION
—
—
20
—
—
20
—
—
20
—
—
20
mV
INPUT VOLTAGE
CONTINUOUS
TRANSIENT
1, 4
50 ms
16
—
28
—
40
50
16
—
28
—
40
50
16
—
28
—
40
50
16
—
28
—
40
50
VDC
V
INPUT CURRENT
NO LOAD
FULL LOAD
INHIBITED - INH1
—
—
—
70
—
9
100
2.1
14
—
—
—
70
—
9
120
2.5
14
—
—
—
50
—
9
80
2.8
14
—
—
—
50
—
9
80
3.0
14
mA
A
mA
INHIBITED - INH2
—
35
70
—
35
70
—
35
70
—
35
70
INPUT RIPPLE
CURRENT
10 kHz - 10 MHz
—
15
50
—
15
50
—
15
50
—
15
50
mA pp
EFFICIENCY
LOAD FAULT
2
Tc = 25°C
70
—
—
75
80
—
81
86
—
82
87
—
%
POWER DISSIPATION
SHORT CIRCUIT
Tc = 25°C
—
12.5
14
—
12.5
16
—
10
14
—
10
14
W
RECOVERY
—
1.5
4
—
1.5
4
—
1.5
4
—
1.5
4
ms
STEP LOAD RESP.
50% – 100% – 50%
TRANSIENT
RECOVERY
3, 4
—
—
200
1.5
300
3.0
—
—
250
1.5
350
3.0
—
—
450
1.5
700
3.0
—
—
500
1.5
700
3.0
mV p
ms
STEP LINE RESP
3, 4
.
16 – 40 – 16 VDC
TRANSIENT
RECOVERY
—
—
250
200
300
30
—
—
250
200
300
300
—
—
250
200
400
300
—
—
250
200
400
300
mV pk
μs
START-UP
DELAY
—
—
3.5
0
6
25
—
—
3.5
0
6
25
—
—
3.5
0
6
50
—
—
3.5
0
6
50
ms
OVERSHOOT
4
mV pk
PINS NOT USED
TR1, Master, and Slave
If not used, leave unconnected
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, radiation level O, unless otherwise specified.
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