MQFL-270-28S Datasheet, PDF (3/16 Pages) SynQor Worldwide Headquarters – HIGH RELIABILITY DC-DC CONVERTER

Technical Specification
MQFL-270-28S
Output: 28.0 V
Current: 4 A
MQFL-270-28S ELECTRICAL CHARACTERISTICS
Parameter
Min. Typ. Max. Units Notes & Conditions
Vin=270 V dc ±5%, Iout=4 A, CL=0 µF, free running (see Note 10)
unless otherwise specified
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
600
V
Operating
550
V See Note 1
Reverse Bias (Tcase = 125ºC)
-0.8
V
Reverse Bias (Tcase = -55ºC)
-1.2
V
Isolation Voltage (I/O to case, I to O)
Continuous
-500
500
A
Transient (≤100 µs)
-800
800
V
Operating Case Temperature
-55
125
°C See Note 2
Storage Case Temperature
-65
135
°C
Lead Temperature (20 s)
300
°C
Voltage at ENA1, ENA2
-1.2
50
V
INPUT CHARACTERISTICS
Operating Input Voltage Range
155 270 400
V Continuous
"
155 270 475
V Transient, 1 s
Input Under-Voltage Lockout
See Note 3
Turn-On Voltage Threshold
142 150 155
V
Turn-Off Voltage Threshold
133 140 145
V
Lockout Voltage Hysteresis
5
11
17
V
Input Over-Voltage Shutdown
See Note 3
Turn-Off Voltage Threshold
490 520 550
V
Turn-On Voltage Threshold
450 475 500
V
Shutdown Voltage Hysteresis
20
50
80
V
Maximum Input Current
1
A Vin = 155 V; Iout = 4 A
No Load Input Current (operating)
28
35
mA
Disabled Input Current (ENA1)
1
4
mA Vin = 155 V, 270 V, 475 V
Disabled Input Current (ENA2)
6
11
mA Vin = 155 V, 270 V, 475 V
Input Terminal Current Ripple (pk-pk)
140 180 mA Bandwidth = 100 kHz – 10 MHz; see Figure 14
OUTPUT CHARACTERISTICS
Output Voltage Set Point (Tcase = 25ºC)
27.72 28.00 28.28 V Vout at sense leads
Vout Set Point Over Temperature
27.6 28 28.4
V
"
Output Voltage Line Regulation
-20
0
20
mV
" ; Vin = 155 V, 270 V, 475 V; Iout=4 A
Output Voltage Load Regulation
120 135 150 mV
" ; Vout @ (Iout=0 A) - Vout @ (Iout=4 A)
Total Output Voltage Range
27.44 28.00 28.56 V
"
Vout Ripple and Noise Peak to Peak
45
90
mV Bandwidth = 10 MHz; CL=11µF
Operating Output Current Range
0
4
A
Operating Output Power Range
0
112
W
Output DC Current-Limit Inception
4.1 4.7 5.3
A See Note 4
Short Circuit Output Current
4.1 4.8 5.5
A Vout ≤ 1.2 V; see Note 15
Back-Drive Current Limit while Enabled
1.5
A
Back-Drive Current Limit while Disabled
10
50
mA
Maximum Output Capacitance
3,000 µF
DYNAMIC CHARACTERISTICS
Output Voltage Deviation Load Transient
See Note 6
For a Pos. Step Change in Load Current
-2500 -2000
mV Total Iout step = 2A‹-›4A, 0.4A‹-›2A; CL=11µF
For a Neg. Step Change in Load Current
2000 2500 mV
"
Settling Time (either case)
300 500
µs See Note 7
Output Voltage Deviation Line Transient
Vin step = 155V‹-›475V; CL=11 µF; see Note 8
For a Pos. Step Change in Line Voltage
3500 4500 mV
"
For a Neg. Step Change in Line Voltage
-4500
4500 mV
"
Settling Time (either case)
500 700
µs See Note 7, Iout=2 A
Turn-On Transient
Output Voltage Rise Time
6
10
ms Vout = 2.8 V-›25.2 V
Output Voltage Overshoot
0
2
%
Turn-On Delay, Rising Vin
50
75 120
ms ENA1, ENA2 = 5 V; see Notes 9 & 11
Turn-On Delay, Rising ENA1
5
10
ms ENA2 = 5 V; see Note 9
Turn-On Delay, Rising ENA2
2
4
ms ENA1 = 5 V; see Note 9
EFFICIENCY
Iout = 4 A (155 Vin)
85
89
%
Iout = 2 A (155 Vin)
90
%
Iout = 4 A (270 Vin)
84
88
%
Iout = 2 A (270 Vin)
81
86
%
Iout = 4 A (400 Vin)
81
86
%
Iout = 2 A (400 Vin)
82
%
Load Fault Power Dissipation
22
32
W Iout at current limit inception point - see Note 4
Short Circuit Power Dissipation
22
24
W Vout ≤ 1.2 V; see Note 15
Group A
Subgroup
(see Note 13)
1, 2, 3
4, 5, 6
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1
2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
See Note 5
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
See Note 5
4, 5, 6
See Note 5
4, 5, 6
4, 5, 6
4, 5, 6
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
See Note 5
Product # MQFL-270-28S
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www.synqor.com
Doc.# 005-MQ2728S Rev. B 09/16/08
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