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| 型號(hào)： | MHF283R3S |
| 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)： | 2/21頁(yè) |
| 文件大?。?/td> | 291K |
| 代理商： | MHF283R3S |
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RECOMMENDED OPERATING CONDITIONS
Input Voltage Range
16 to 40 VDC continuous
50 V for up to 50 msec transient
Case Operating Temperature (Tc)
–55°C to +125°C full power
–55°C to +135°C absolute
Derating Output Power/Current (Tc)
Linearly from 100% at 125°C to 0% at 135°C
TYPICAL CHARACTERISTICS
SYNC AND INHIBIT
ABSOLUTE MAXIMUM RATINGS
Input Voltage
16 to 40 VDC
Power Dissipation (Pd)
6 W
Output Power
12 to 15 watts depending on model
Lead Soldering Temperature (10 sec per lead)
300°C
Storage Temperature Range (Case)
–65°C to +150°C
2
DC/DC C
ONVERTERS
Output Voltage Temperature Coefficient
100 ppm/°C typical
150 ppm/°C maximum
Input to Output Capacitance
60 pF typical
Undervoltage Lockout
12 V input typical
Current Limit
115% of full load typical
Isolation
100 megohm minimum at 500 V
Audio Rejection
50 dB typical
Conversion Frequency (55°C to +125°C Tc)
Free run 550 kHz typical
480 kHz min, 620 kHz max
Inhibit Pin Voltage (unit enabled)
8.5 to 12 V
MHF+ SERIES
SINGLE AND DUAL
15 WATT
SINGLE OUTPUT MODELS
MHF+283R3S
MHF+2805S
MHF+285R2S
PARAMETER
OUTPUT VOLTAGE
OUTPUT CURRENT
OUTPUT POWER
CONDITION
MIN
3.27
0
0
TYP MAX
3.30
—
—
MIN
4.95
0
0
TYP MAX
5.00
—
—
MIN
5.16
0
0
TYP MAX
5.20
—
—
UNITS
VDC
A
W
3.33
2.4
8
5.05
2.4
12
5.24
2.4
12.48
V
IN
= 16 to 40 VDC
V
IN
= 16 to 40 VDC
10 kHz - 2 MHz
Tc = –55°C to +125°C
Vin = 16 to 40 VDC
NO LOAD TO FULL
CONTINUOUS
TRANSIENT 50 ms
OUTPUT RIPPLE
VOLTAGE
LINE REGULATION
LOAD REGULATION
INPUT VOLTAGE
NO LOAD TO FULL
—
—
—
—
16
—
30
50
5
20
28
—
80
120
100
50
40
50
—
—
—
—
16
—
30
60
5
20
28
—
80
100
50
50
40
50
—
—
—
—
16
—
30
60
5
20
28
—
50
100
35
35
40
50
mV p-p
mV
mV
VDC
V
INPUT CURRENT
NO LOAD
FULL LOAD
INHIBITED
10 kHz - 10 MHz
Tc = –55°C to +125°C
—
—
—
—
—
72
25
—
5
45
—
75
65
397
12
80
120
—
—
—
—
—
—
75
25
560
5
35
—
77
40
624
12
80
100
—
—
—
—
—
—
75
25
560
5
35
—
77
42
605
12
100
100
—
mA
INPUT RIPPLE
CURRENT
EFFICIENCY
LOAD FAULT
1
mA pp
%
SHORT CIRCUIT
POWER DISSIPATION
RECOVERY
2
50% – 100% – 50%
TRANSIENT
RECOVERY
2
—
—
5
8
30
—
—
3.5
7.5
6
—
—
3.5
7.5
6
W
ms
7.5
30
30
STEP LOAD RESP.
–400
—
150
150
500
300
–400
—
150
150
400
300
–400
—
150
150
400
300
mV pk
μs
STEP LINE RESP.
16 – 40 – 16 VDC
TRANSIENT
3
RECOVERY
2
–800
—
550
0.8
800
1.2
–800
—
550
0.8
800
1.2
–800
—
550
0.8
800
1.2
mV pk
ms
START-UP
DELAY
—
10
25
—
10
25
—
10
25
ms
OVERSHOOT
4
—
200
300
—
100
600
—
100
600
mV pk
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.
Notes
1. Indefinite short circuit protection not guaranteed above 125°C (case)
2. Recovery time is measured from application of the transient
to the point at which Vout is within regulation.
3. Input step transition time >10 μs.
4. Input step transition time <100 μs.
Sync In (500 to 600 kHz)
Duty cycle 40% to 60%
Logic low 0.8 V max
Logic high 4.5 V min, 5 V max
Referenced to input common
If not used, connect to input common
Inhibit TTL Open Collector
Logic low (output disabled)
Logic low voltage
≤
0.8 V
Inhibit pin current 4.0 mA max
Referenced to input common
Logic high (output enabled)
Open collector or unconnected
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