MQFL-28-2R5S
Output:
2.5 V
Current:
40 A
Technical Specification
MQFL-28-2R5S ELECTRICAL CHARACTERISTICS
Parameter
ABSOLUTE MAXIMUM RATINGS
Min.
Nom.
Max.
Units Notes & Conditions
Vin=28V DC
±
5%, Iout = 40A, C
L
= 0
µF,
free running
10
Subgroup
13
unless otherwise specified
Group A
Input Voltage
Non-Operating
Operating
1
Reverse Bias (T
case
= 125ºC)
Reverse Bias (T
case
= -55ºC)
Isolation Voltage (input/output to case, input to output)
Continuous
Transient (≤100
µs)
Operating Case Temperature
2
Storage Case Temperature
Lead Temperature (20 sec)
Voltage at ENA1, ENA2, SYNC IN
Operating Input Voltage Range (continuous)
Operating Input Voltage Range (transient, 1 sec)
Input Under-Voltage Lockout
3
Turn-On Voltage Threshold
Turn-Off Voltage Threshold
Lockout Voltage Hysteresis
Input Over-Voltage Shutdown
3
Turn-Off Voltage Threshold
Turn-On Voltage Threshold
Shutdown Voltage Hysteresis
Maximum Input Current
No Load Input Current (operating)
Disabled Input Current (ENA1)
Disabled Input Current (ENA2)
Input Terminal Current Ripple (peak to peak)
Output Voltage Set Point (T
case
= 25ºC)
Output Voltage Set Point Over Temperature
Output Voltage Line Regulation
Output Voltage Load Regulation
Total Output Voltage Range
Output Voltage Ripple and Noise Peak to Peak
Operating Output Current Range
Operating Output Power Range
Output DC Current-Limit Inception
4
Short Circuit Output Current
Back-Drive Current Limit while Enabled
Back-Drive Current Limit while Disabled
Maximum Output Capacitance
Output Voltage Deviation Load Transient
6
For a Positive Step Change in Load Current
For a Negative Step Change in Load Current
Settling Time (either case)
7
Output Voltage Deviation Line Transient
8
For a Positive Step Change in Line Voltage
For a Negative Step Change in Line Voltage
Settling Time (either case)
7
Turn-On Transient
Output Voltage Rise Time
Output Voltage Overshoot
Turn-On Delay, Rising Vin
9 11
Turn-On Delay, Rising ENA1
11
Turn-On Delay, Rising ENA2
11
Iout = 40A (16Vin)
Iout = 20A (16Vin)
Iout = 40A (28Vin)
Iout = 20A (28Vin)
Iout = 40A (40Vin)
Iout = 20A (40Vin)
Load Fault Power Dissipation
Short Circuit Power Dissipation
60
60
-0.8
-1.2
-500
-800
-55
-65
-1.2
16
16
14.75
13.80
0.50
54.0
50.0
2.0
28
28
15.50
14.40
1.10
56.8
51.4
5.3
110
2
25
40
2.47
2.46
-20
7
2.45
0
0
41
41
2.50
2.50
0
12
2.50
15
46
47
13
10
500
800
135
135
300
50
40
50
16.00
15.00
1.80
60.0
54.0
8.0
8
160
5
50
60
2.53
2.54
20
17
2.55
60
40
100
52
53
50
10,000
V
V
V
V
V
V
°C
°C
°C
V
V
V
V
V
V
V
V
V
A
mA
mA
mA
mA
V
V
mV
mV
V
mV
A
W
A
A
A
mA
µF
mV
mV
µs
mV
mV
µs
ms
%
ms
ms
ms
%
%
%
%
%
%
W
W
1, 2, 3
4, 5, 6
1, 2, 3
1, 2, 3
1, 2, 3
1,
1,
1,
1,
1,
1,
1,
1,
2,
2,
2,
2,
2,
2,
2,
2,
3
3
3
3
3
3
3
3
INPUT CHARACTERISTICS
Vin = 16V; Iout = 40A
Vin = 16V, 28V, 50V
Vin = 16V, 28V, 50V
Bandwidth = 100 kHz – 10 MHz; see Figure 14
Vout at sense leads
“
“
; Vin = 16V, 28V, 50V
“
; Vout @ (Iout=0A) - Vout @ (Iout=40A)
“
Bandwidth = 10 MHz;
C
L
=11µF
OUTPUT CHARACTERISTICS
Vout
≤
1.2V
DYNAMIC CHARACTERISTICS
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
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,
1,
1,
1,
1,
1,
1,
1,
2,
2,
2,
2,
2,
2,
2,
2,
3
3
3
3
3
3
3
3
-450
-300
300
200
450
350
250
250
500
10
2
8.0
6.0
3.0
Total Iout step = 20A
↔
40A, 4A
↔
20A; C
L
=11µF
“
Vin step = 16V
↔
50V; C
L
=11µF
“
Vout = 0.25V
→
2.25V
ENA1, ENA2 = 5V
ENA2 = 5V
ENA1 = 5V
-250
-250
250
6
0
5.5
3.0
1.5
EFFICIENCY
82
86
82
85
81
83
87
89
87
88
86
87
19
20
34
34
Iout at current limit inception point
Vout
≤
1.2V
4
Product # MQFL-28-2R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2MQ250S Rev. B
03/19/09
Page 3
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