MPQ24S48-50 [WALL]
50 W DC-DC Converter 10-36 Vdc Input 48 Vdc Output at 1 A Quarter-Brick Package; 50W的DC- DC转换器10-36 VDC输入48 Vdc输出1四分之一砖封装
| 型号： | MPQ24S48-50 |
| 厂家： | 
WALL INDUSTRIES,INC. |
| 描述： | 50 W DC-DC Converter 10-36 Vdc Input 48 Vdc Output at 1 A Quarter-Brick Package |
| 文件： | 总11页 (文件大小：812K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TECHNICAL DATASHEET
Rev. B
MPQ24S48-50
50 W DC-DC Converter
10-36 Vdc Input
48 Vdc Output at 1 A
Quarter-Brick Package
Features:
• Fixed Switching Frequency
• Output Over Current Protection
• Output Short Circuit Protection
• Over Temperature Protection
• 1000 V Isolation
• Over 87% Efficient at Full Load
• Fast Transient Response
• Operation to No Load
• Output Trim +/-10%
• Remote ON/OFF
• 100% Burn In
• Heatsink Available
• Remote Sense Compensation
• Low Output Ripple
Description:
The MPQ24 series is a high density, low voltage input quarter brick converter that incorporates the
desired features required in today’s demanding applications while maintaining low cost. When
performance, reliability, and low cost are needed, the MPQ series delivers.
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1 of 11
TECHNICAL DATASHEET
WALL INDUSTRIES, INC.
Rev. B
MPQ24S48-50
Technical Specifications
Model No. MPQ24S48-50
All specifications are based on 25 oC, Nominal Input Voltage and Maximum Output Current unless otherwise noted.
We reserve the right to change specifications based on technological advances.
Related condition
Min
Nom
Max
-
Unit
kHz
SPECIFICATION
Switching Frequency
-
200
INPUT (Vin)
Operating Voltage Range
UVLO Turn On at
10
24
10.0
9.7
36
Vdc
Vdc
Vdc
Vdc
A
9.8
10.3
UVLO Turn Off at
9.4
9.9
UVLO Hysterisis
-
-
-
-
-
-
0.3
-
-
Maximum Input Current (Graph 3)
No Load Input Current (Graph 5)
Input Current under “Remote Off” (Graph 6)
Reflected Ripple Current (Photos 1 & 2)
Input Surge Voltage
Low Line
5.5
No Load
0.063
3.1
-
A
Active High Unit
-
mA
mA
Vdc
Measured with a 120 uF Alum. Elect. Input Capacitor
100 mS
164
-
-
50
-
87
-
%
EFFICIENCY (Graph 1)
OUTPUT (Vo)
Voltage Set Point
47.262
48.744 Vdc
±Sense shorted to ±Vout
48.000
48.0
-1.55
+1.55
52.80
+10%
0.1
%
43.20
Voltage Adjustment (Table 2)
Max Output limited to 90W
Vdc
-10%
Load Regulation (Graph 7)
Line Regulation (Graph 8)
Temperature Drift (Graph 9)
±Sense shorted to ±Vout
±Sense shorted to ±Vout
-
-
-
0.01
0.01
%
0.1
%
0.013
0.025
52.80
10%
250
% / oC
Vdc
%
Max Output limited to 50W
(as measured at the converter output pins)
20 MHz BW
Remote Sense Compensation
-
-
Ripple (Photos 7 & 8)
Spikes (Photos 7 & 8)
Current
-
-
104
mVpk-pk
mVpk-pk
A
20 MHz BW
-
-
250
0
1.0
Power Limited-Dependent upon SENSE
compensation and TRIM adjustment
Current Limit
1.3
1.6
1.9
58
A
Over Voltage Limit
52.8
54.0
Vdc
DYNAMIC RESPONSE
25% to 100% Io, di/dt=0.025A/uS
Recovery to within 1% Nominal Vout
From Vin(min) to Vout (mom)
Full Load Resistive
-
-
-
-
325
1
-
-
-
-
mV
ms
ms
%
Load step / ∆ V (Photos 9 to 12)
Recovery Time (Photos 9 to 12)
Turn On Delay (Photo 3)
15
0.0
Turn On Overshoot (Photos 3 & 5)
Hold Up Time (Photo 4)
From Vin (min) to VULVO_Turn_Off
0
-
-
mS
REMOTE ON/OFF
Active High or Active Low (Add an ‘R’ to the end of the PN ie: MPQ24S48-50R)
Remote ON – Active High
Min High to Enable
1.5
-
-
-
0.3
5.2
0.15
0.8
-
Vdc
Vdc
Vdc
mA
Vdc
Vdc
Remote OFF – Active High
Max Low to Disable
-
1.6
-
Remote ON/OFF pin Floating – Active High
ION/OFF Sink to pull low – Active High
Remote ON – Active Low
Over Operating Voltage Range
VON/OFF =0V, Vin=36 V
Max Low to Enable
-
-
-
-
Remote OFF – Active Low
Min High to Disable
2.1
2.3
-
-
Remote ON/OFF pin Floating – Active Low
ION/OFF Sink to pull low – Active Low
ION/OFF Source to drive high – Active High or Low
Turn On Delay – (Photo 5)
Over Operating Voltage Range
VON/OFF =0V, Vin=36V
-
6.2
0.6
-
-
mA
mA
ms
-
0
3
-
Enable (max Low) to Vout (min)
Enable (0V) to Vout (min)
-
-
Turn Off Delay – (Photo 6)
-
100
uS
ISOLATION
Input-Output
1 minute
1 minute
at 25oC
1000
1000
20
-
-
-
-
-
Vdc
Vdc
GΩ
uF
Input/Output-Chassis
Isolation Resistance
Isolation Capacitance
THERMAL
-
-
-
0.01
Ambient (Graph 2)
Over Temperature Protection
Storage Temperature
MTBF
Max. Ambient limited by Derating Curves (Graph 2)
Case Temperature
-40
-
25
110
oC
Graph 2
-
125
oC
-55
-
oC
Calculated Using Bellcore TR-332 Method 1 case 3
1,250,300
hours
MECHANICAL
Weight
See Figure 1
61
-
g
-
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Page 2 of 11
TECHNICAL DATASHEET
WALL INDUSTRIES, INC.
Rev. B
MPQ24S48-50
Table 1: Pin Assignments
Pin #
Pin Name
Function
Comments
1
2
3
4
5
6
7
8
+Vin
Positive Input
Enable
-Vin
Remote On/Off
If not used, leave open for standard unit, short to –Vin on ‘R’ units.
Negative Input
+Vout
+SENSE
TRIM
-SENSE
-Vout
Negative Output
Negative Remote Sense
Output Voltage Trim
Positive Remote Sense
Positive Output
If not used, short to –Vo.
If not used, leave open.
If not used, short to +Vo.
Figure 1: Mechanical Dimensions
2.28 [57.9]
.00 [0.0]
.42 [10.7]
1
2
3
1
2
3
.42 [10.7]
4
5
6
7
8
4
5
6
7
8
PIN DESIGNATION PIN Ø
1
2
3
4
5
6
7
8
+ Vin
ON/OFF
-Vin
+ Vout
+ SENSE
TRIM
Ø.062 [1.57]
Ø.040 [1.02]
Ø.062 [1.57]
Ø.062 [1.57]
Ø.040 [1.02]
Ø.040 [1.02]
Ø.040 [1.02]
Ø.062 [1.57]
WALL INDUSTRIES
MODEL NAME
XXXX
EXETER, NH 03833 XXX
X
.11 [2.8] REF
LABEL
-SENSE
-Vout
.14 [3.6]
NOTES:
.19 [4.7]
1. PIN TO PIN TOLERANCE: ± .010 [± 0.25] MEASURED AT STANDOFF FEATURE ONLY, DATUM-B.
2. PIN DIAMETER TOLERANCE OF : ± .005 [± 0.13] MEASUREMENT READING APPLIES
TO AREA FROM INTERFACE-PLANE SURFACE DATUM-B TO END OF PIN ONLY.
3. UNLESS OTHERWISE SPECIFIED.
.00 [0.0]
INTERFACE-PLANE
A
PIN END
B
.071± .005 [1.80± 0.13]
STANDOFF DIMENSION
Ø.040 [1.02] PINS ONLY 4X
.20 MIN [5.1 MIN]
SEE NOTE-3
PIN LENGTH FROM
INTERFACE-PLANE ONLY
RECOMMENDED FINISHED RECEIVING PCB
STAND-OFF HOLE Ø.052± .003 [1.32± 0.08]
PIN-2 SHOWN FOR DIMENSIONS
2.00 [50.8]
UNLAELSLSDIOMETNHSEORNSWAISREEINSPINECCHEIFSIED
[
XX ] ARE IN MILLIMETERS
APPLIED TOLERANCES:
ANGLES= ± 1°
.XX= ± .02[0.5] .XXX= ± .010[0.25]
.112(NO:4)-40UNC-2B 4X
DO NOT SCALE DRAWING
INTERPRET DIMENSION AND TOLERANCE
PER ASME Y14.5M - 1994
MAX SCREW DEPTH .100 FROM SURFACE-A 4X
MAX APPLIED RECIEVING
TORQUE: 6.0 lbf in [ 0.68 N m]
THIRD ANGLE PROJECTION
DOT DENOTES
PIN-1
.51 [13.0]
.00 [0.0]
2.37 [60.2]
.26 [6.5]
.47 [11.9]
1
2
3
1
.47 [11.9]
4
5
6
7
8
4
5
6
7
8
1.030 [26.16]
PIN DESIGNATION PIN Ø
2
3
1
2
3
4
5
6
7
8
+ Vin
ON/OFF
-Vin
+ Vout
+ SENSE
TRIM
Ø.062 [1.57]
Ø.040 [1.02]
Ø.062 [1.57]
Ø.062 [1.57]
Ø.040 [1.02]
Ø.040 [1.02]
Ø.040 [1.02]
Ø.062 [1.57]
LABEL
1.860 [47.24]
-A-
-SENSE
-Vout
SEE NOTE-4
.19 [4.7]
.005
NOTES:
.19 [4.7]
1. PIN TO PIN TOLERANCE: ± .010 [± 0.25] MEASURED AT STANDOFF FEATURE ONLY, DATUM-B.
2. PIN DIAMETER TOLERANCE OF : ± .005 [± 0.13] MEASUREMENT READING APPLIES
TO AREA FROM INTERFACE-PLANE SURFACE DATUM-C TO END OF PIN ONLY.
3. UNLESS OTHERWISE SPECIFIED.
.00 [0.0]
C
INTERFACE-PLANE
PIN END
B
4. THERMAL TRANSFER PLATE MATERIAL: .040 [1.02] THICK, ALUMINUM ALLOY 3003-0,
PER: QQA 250/2 WITH BLACK SOFT SULFURIC ANODIZE FINISH.
.071± .005 [1.80± 0.13]
STANDOFF DIMENSION
Ø.040 [1.02] PINS ONLY 4X
.20 MIN [5.1 MIN]
SEE NOTE-3
RECOMMENDED FINISHED RECEIVING PCB
PIN LENGTH FROM
INTERFACE-PLANE ONLY
2.00 [50.8]
STAND-OFF HOLE Ø.052± .003 [1.32± 0.08]
PIN-2 SHOWN FOR DIMENSIONS
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Page 3 of 11
TECHNICAL DATASHEET
WALL INDUSTRIES, INC.
Rev. B
MPQ24S48-50
DESIGN CONSIDERATIONS
Under Voltage Lock Out (UVLO)
The converter output is disabled until the input voltage exceeds the UVLO turn-on limit. The converter will remain ON until the input
voltage falls below the UVLO turn-off limit.
Over Current Protection
The converter is protected from short circuit and over current conditions. Upon sensing an over current, the output will begin to drop (or
‘foldback’) limiting the output power. Further increasing the output current will cause the converter to shut off and then restart (or
‘hiccup’) until the overcurrent condition is removed. Shorting the output will cause the converter to immediately enter the ‘hiccup’ mode.
Over Temperature Protection
The converter is protected from over temperature conditions. Upon exceeding this temperature, the converter will shut down. The
converter will automatically recover once the over tempature condition is removed.
Input Filter
No additional input capacitor is needed for the power supply to operate. However, due to the low voltage, high input current nature of the
power supply, it is highly recommended that a minimum 100 uF/50 V electrolytic type input bulk capacitor be added to reduce input
ripple voltage and current. Refer to Photos 1 and 2 for an example. For an even further reduction of input ripple, an inductor may be
placed between the source and the previously mentioned capacitor. Additionally, a 1-10 uF ceramic capacitor may be added in front of
the inductor to form pi-filter. No inductor should be placed between the capacitor and the input to the converter.
Output Filter
No additional output capacitor is needed for the power supply to operate. However, to reduce the ripple and noise on the output,
additional capacitance may be added. Usually, a ceramic capacitor between 0.1 and 1 uF is recommended for reducing any ringing and
spike noise. Also, capacitance in the form of an aluminum electrolytic capacitor may also be placed across the output in order reduce
ripple, and improve the transient peak-to-peak voltage deviation (see Photos 7 to 11), but in most cases, is not necessary.
Remote Sense
To improve regulation at the load, route the connections from the -Sense and the +Sense pins to the –Vout and +Vout connections at the
load. This will force the converter to regulate the voltage at the load and not at the pins of the converter. If it is not desired to use the
Remotes Sense feature, the –Sense and +Sense pins should be shorted to the -Vout and +Vout pins respectively. However, no damage to
the converter will occur if the Sense pins are left open.
Fusing
It is required that the input to the converter be supplied with a maximum 10 A, 250 V rated fuse UL Listed or R/C fuse.
Safety
The MPQ24 series is designed to meet EN60950 Safety of Information Technology Equipment. The isolation provided by the MPQ24
series is a Basic insulation in accordance with EN60950. SELV output reliability is maintained only if the input to the converter is a
SELV source. To maintain SELV reliability, if either +Vin or –Vin is connected to chassis, either +Vout or –Vout must also be
connected to chassis. Otherwise, both the input and the output must not be connected to chassis.
PCB Layout Considerations
Due to the Basic isolation provided by the converter, caution must be observed in routing traces more than 2 mm inward of any input or
output pins on the top layer of the pcb board underneath the converter. Also, due to noise coupling and isolation requirements, no power
or ground planes or any signal traces should be routed on the top layer of the pcb underneath the converter. Due to comon noise coupling,
input or output power and ground planes should not be poured across the input to output on any layers underneath the converter. Instead,
it is best to provide separate input and output power and ground traces on the bottom or an inner layer with a miminum of 1 mm
separation between traces on the same layer.
Lastly, as the case/heatsink is floating metal, caution must also be observed to provide appropriate spacing (minimum 1.4 mm for
Pollution degree 2 Material Group IIIa + IIIb) around the case/heatsink or risk reducing the input to output spacing and violating Basic
insulation requirements.
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Page 4 of 11
TECHNICAL DATASHEET
WALL INDUSTRIES, INC.
Rev. B
MPQ24S48-50
Remote ON/OFF
This converter has the ability to be remotely turned ON or OFF. The series may be ordered Active-High or Active-Low (place an option
‘R’ at the end of the part number). Active-High means that a logic high at the ENABLE pin will turn ON the supply (Figure 2). With
Active-High, if the ENABLE pin is left floating, the supply will be enabled. Active-Low means that a logic low at the ENABLE pin will
turn ON the supply (Figure 3). With Active-Low, if the ENABLE pin is left floating, the supply will be disabled. If remote On/Off is not
used on an Active-Low supply, short the Enable pin to –Vin.
Output Voltage Trim
The output is adjustable from +/–10% of the output voltage. To adjust the output voltage low, place a resistor between the TRIM and -
SENSE pins (Figure 4). To adjust the output voltage high, place a resistor between the +SENSE and TRIM pins (Figure 5). The value of
the TRIM resistor with respect to the desired output voltage can be found in Table 2 or derived from the following equations:
100
∆%
V
onom
⋅
∆% +100
)
100
∆%
RTrim − Low
=
−5.11 (in kΩ)
R
Trim − High
=
−
−5.11 (in kΩ)
2.5⋅∆%
V
o
+/− −Vonom
where ∆% = Percent Trim =
⋅100
+/−
Vo
Table 2: Trim Resistor Values (in kΩ)
Percent
Trim
1%
TRIM Low
TRIM High
Vout
RLow
93.89
43.89
27.22
18.89
13.89
10.56
8.18
Vout
RHigh
1833.09
923.09
619.76
468.09
377.09
316.42
273.09
240.59
215.31
195.09
Note 2: While decreasing the output voltage, the maximum output current
remains the same, and while increasing the output voltage, the output current is
reduced to maintain the total output power at 50 W.
47.520
47.040
46.560
46.080
45.600
45.120
44.640
44.160
43.680
43.200
48.480
48.960
49.440
49.920
50.400
50.880
51.360
51.840
52.320
52.800
2%
3%
4%
5%
6%
7%
8%
6.39
9%
5.00
10%
3.89
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Page 5 of 11
TECHNICAL DATASHEET
WALL INDUSTRIES, INC.
Rev. B
MPQ24S48-50
Graph 1: MPQ24S48-50 Efficiency vs. Output Current
90%
88%
86%
84%
82%
80%
78%
76%
74%
72%
70%
Vin=12V
Vin=20V
Vin=28V
Vin=36V
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
Io (A)
Graph 2: MPQ24S48-50 Max Ambient vs. Io
1.2
1.0
0.8
0.6
0.4
0.2
0.0
Vin=12-28V (200LFM)
Vin=12-28V (100LFM) & 29-36V (200LFM)
Vin=10-16V (No Air) & 29-36V (100LFM)
Vin=17-23V (No Air)
Vin=24-30V (No Air)
Vin=30-36V (No Air)
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
Ambient (°C)
Note 3: When trimming output high, Io vs. Ambient is derated by power. ie: from Graph 2, find the maximum current at the desired
ambient and airflow, and multiply this current by the nominal voltage to get the maximum power. Divide this power by the desired
trimmed high voltage to get the maximum current at that ambient. When trimming low, the maximum current stays the same as shown in
Graph 2.
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Page 6 of 11
TECHNICAL DATASHEET
WALL INDUSTRIES, INC.
Rev. B
MPQ24S48-50
Graph 3: MPQ24S48-50 Input Current vs. Input Voltage
Graph 4: MPQ24S48-50 Power Dissipation vs. Input Voltage
10
5.0
Io=0A
Io=0A
Io=0.2A
Io=0.4A
Io=0.6A
Io=0.8A
Io=1.0A
Io=0.2A
Io=0.4A
Io=0.6A
8
4.0
Io=0.8A
Io=1.0A
6
3.0
2.0
1.0
0.0
4
2
0
12
16
20
24
28
32
36
12
16
20
24
28
32
36
Vin(V)
Vin(V)
Graph 5: MPQ24S48-50 No Load Input Current and Power
Graph 6: MPQ24S48-50 "Remote Off" Input Current and Power
Dissipation vs. Input Voltage
Dissipation vs. Input Voltage
6.0
5.0
4.0
3.0
2.0
1.0
0.0
300
250
200
150
100
50
0.150
0.125
0.100
0.075
0.050
0.025
0.000
3.0
2.5
2.0
1.5
1.0
0.5
0.0
Input Current - R Unit
Input Current
Input Current
Power Dissipation
Power Dissipation - R Unit
Power Dissipation
0
12
16
20
24
28
32
36
12
16
20
24
28
32
36
Vin(V)
Vin(V)
Note 4: Voltage measurements taken where the output pins are
soldered into test board.
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Page 7 of 11
TECHNICAL DATASHEET
WALL INDUSTRIES, INC.
Rev. B
MPQ24S48-50
Graph 7: MPQ24S48-50 Load Regulation
Graph 8: MPQ24S48-50 Line Regulation
(+SENSE to +Vout, -SENSE to -Vout)
(+SENSE to +Vout, -SENSE to -Vout)
0.05%
0.04%
0.05%
Io=0A
0.04%
0.03%
0.02%
0.01%
0.00%
-0.01%
-0.02%
-0.03%
-0.04%
-0.05%
Io=0.2A
Io=0.4A
Io=0.6A
Io=0.8A
Io=1.0A
Vin=12V
Vin=20V
Vin=28V
Vin=36V
0.03%
0.02%
0.01%
0.00%
-0.01%
-0.02%
-0.03%
-0.04%
-0.05%
0.0
0.2
0.4
0.6
0.8
1.0
12
16
20
24
28
32
36
Io (A)
V
in (V)
Graph 9: MPQ24S48-50 Output Temperature Drift
(+SENSE to +Vout, -SENSE to -Vout)
1.0%
0.8%
0.5%
0.3%
0.0%
-0.3%
-0.5%
-0.8%
-1.0%
-40
-20
0
20
40
60
80
100
Case Temperature (°C)
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Page 8 of 11
TECHNICAL DATASHEET
WALL INDUSTRIES, INC.
Rev. B
MPQ24S48-50
Photo 1: Input Ripple Voltage and Current
Photo 2: Input Ripple Voltage and Current
Vin=24 V, Iout = 1 A
Vin=24 V, Iout = 1 A
With a 120 uF Aluminum Electrolytic across the Input
Photo 3: Normal Turn On at 24 V
Photo 4: Normal Turn Off at 24 V
Cout = 68 uF
Cout = 68 uF
Photo 5: Turn On by Enable at 24 V
Photo 6: Turn Off by Enable at 24 V
Cout = 68 uF
Cout = 68 uF
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Page 9 of 11
TECHNICAL DATASHEET
WALL INDUSTRIES, INC.
Rev. B
MPQ24S48-50
Photo 7: Output Ripple and Noise (20 MHz BW)
Photo 8: Output Ripple and Noise (20 MHz BW)
Vin=24 V, Iout = 1 A
Vin=24 V, Iout = 1 A
With a 68 uF Electrolytic across the Output
Photo 9: Transient Response – 0.025A/us
Photo 10: Transient Response – 0.25A/us
Photo 10: Transient Response – 0.025A/us
Vin=24 V, Iout = 0.25 to 1 A (25% to 100%)
With a 68 uF Electrolytic across the Output
Photo 11: Transient Response – 0.25A/us
Vin=24 V, Iout = 0.25 to 1 A (25% to 100%)
With a 68 uF Electrolytic across the Output
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Page 10 of 11
TECHNICAL DATASHEET
WALL INDUSTRIES, INC.
Rev. B
MPQ24S48-50
Ordering Information:
Part Number Example:
MPQ 24 S 48 – 50 R
Series
Designation
Nominal
Input
Voltage
Single
Output
Nominal
Output
Maximum
Output
Voltage
Power
Options
Leave Blank for no Options
Active Low
Heatsink/Case
R
C
Company Information:
Wall Industries, Inc. has created custom and modified units for over 40 years. Our in-house research and development engineers will
provide a solution that exceeds your performance requirements on-time and on budget. Our ISO9001-2000 certification is just one
example of our commitment to producing a high quality, well documented product for our customers.
Our past projects demonstrate our commitment to you, our customer. Wall Industries, Inc. has a reputation for working closely with it's
customers to ensure each solution meets or exceeds form, fit and function requirements. We will continue to provide ongoing support for
your project above and beyond the design and production phases. Give us a call today to discuss your future projects.
Contact Wall Industries for further information:
Phone:
Toll Free:
Fax:
ꢀ(603)778-2300
ꢀ (888)587-9255
ꢀ (603)778-9797
E-mail:
Web:
sales@wallindustries.com
www.wallindustries.com
5 Watson Brook Rd.
Address:
Exeter, NH 03833
(888) 597-WALL
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Page 11 of 11
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