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LV12S20-100-S [WALL]

Low Voltage DC-DC Converter 10-36 Vdc Input 20Vdc Output at 5A Half-Brick Package; 低压DC -DC转换器10-36 VDC输入20VDC输出为5A半砖封装
LV12S20-100-S
型号： LV12S20-100-S
厂家： WALL INDUSTRIES,INC.    WALL INDUSTRIES,INC.
描述：

Low Voltage DC-DC Converter 10-36 Vdc Input 20Vdc Output at 5A Half-Brick Package
低压DC -DC转换器10-36 VDC输入20VDC输出为5A半砖封装

转换器
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中文：  中文翻译
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TECHNICAL DATASHEET  
Rev. D  
LV12S20-100  
Low Voltage DC-DC Converter  
10-36 Vdc Input  
20Vdc Output at 5A  
Half-Brick Package  
Features:  
•
•
•
Up to 87% Efficient  
Cost Efficient Solution  
Delivering 5A at Room Temperature with No  
Added Heat Sink with 400 LFM  
•
•
•
•
•
•
•
•
•
•
Fixed Switching Frequency  
High Reliability  
Consult Factory for Optional Heat Sink  
Output Short Circuit Protection  
Output Over Current Protection  
Optional Encapsulation for added Ruggedness  
Remote ON/OFF  
Applications:  
•
For use in 12V and 24V battery applications.  
•
For use in Intermediate and Distributed Bus  
Architectures (IBA)  
Remote Sense Compensation to 10% Vout  
Fast Transient Response  
•
•
•
Telecommunication equipment  
100% Burn In  
Network (LANs/WANs) Equipment  
Next generation low voltage, high current  
microprocessors and Ics  
Description:  
The LV12S20-100 is a high density, low input voltage, isolated converter with a wide input voltage range.  
Low input voltage converters are uncommon in the industry and the LV12S20-100 offers the flexibility of  
operation with both 12V and 24V busses. This state-of-the-art converter’s features include fast transient  
response, short circuit protection, over current protection, soft start, and many other features that are  
required for today’s demanding applications.  
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1 of 15  
TECHNICAL DATASHEET  
Rev. D  
LV12S20-100  
Technical Specifications  
Model No. LV12S20-100  
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.  
SPECIFICATION  
Switching Frequency  
INPUT (Vin)  
Related condition  
Min  
Nom  
Max  
Unit  
-
400  
-
kHz  
Operating Voltage Range  
UVLO Turn On at  
10  
9.4  
9.3  
-
12 / 24  
9.5  
36  
9.6  
9.5  
-
Vdc  
Vdc  
Vdc  
A
UVLO Turn Off at  
9.4  
Maximum Input Current  
No Load Input Current  
Input Current under “Remote Off”  
Reflected Ripple Current  
EFFICIENCY  
Low Line  
Min Load  
11.9  
0.6  
-
-
A
-
11  
-
mA  
mA  
%
-
150  
84  
-
-
-
OUTPUT (Vo)  
Voltage Set Point  
19.8  
-1%  
18.0  
-10%  
-
20.2  
+1%  
22.0  
+10%  
0.2  
0.2  
-
Vdc  
%
±RS shorted to ±Vo  
20.0  
20.0  
Voltage Adjustment  
Max Output limited to 150W  
Vdc  
Load Regulation  
Line Regulation  
Temperature Drift  
±RS shorted to ±Vo  
±RS shorted to ±Vo  
0.1  
0.1  
0.2  
%
-
%
-
% / oC  
Vdc  
%
20.2  
10%  
-
Remote Sense Compensation  
Max Output limited to 150W  
-
Ripple  
Spikes  
Current  
1uF Ceramic &10uF Tantalum  
1uF Ceramic &10uF Tantalum  
-
-
300  
mVpk-pk  
mVpk-pk  
A
-
0.5  
-
9
-
5.0  
Power Limited-Dependent upon SENSE  
compensation and TRIM adjustment  
Output Clamped  
Current Limit  
-
-
-
-
A
Over Voltage Limit  
DYNAMIC RESPONSE  
Load step / ∆ V  
Vdc  
1uF Ceramic & 10uF Tantalum  
50% to 100% Io, di/dt=1A/uS  
Recovery to within 1% Nominal Vo  
From Vin(min) to Vout (nom)  
Full Load Resistive  
From Vin (min) to VULVO_Turn_Off  
Active High  
-
-
-
-
750  
0.3  
40  
-
-
-
-
mV  
ms  
ms  
%
Recovery Time  
Turn On Delay  
Turn On Overshoot  
Hold Up Time  
0
-
-
mS  
REMOTE ON/OFF  
Remote ON – Active High  
Min High (ON/OFF pin)  
Max Low (ON/OFF pin)  
Max Low (ON/OFF pin)  
Min High (ON/OFF pin)  
Over Operating Voltage Range  
Over Operating Voltage Range  
VON/OFF =0V, Vin=36V  
2.2  
-
-
Vdc  
Vdc  
Vdc  
Vdc  
Vdc  
Vdc  
mA  
mA  
mA  
ms  
Remote ON – Active Low  
N/A  
-
-
Remote OFF – Active High  
-
-
1.2  
Remote OFF – Active Low  
N/A  
-
-
Remote ON/OFF pin Floating – Active High  
Remote ON/OFF pin Floating – Active Low  
ION/OFF Sink to pull low – Active Low or High  
ION/OFF Source to drive high – Active High  
ION/OFF Source to drive high – Active Low  
Turn On Delay – Active High  
Turn Off Delay – Active High  
2.5  
-
5.0  
N/A  
-
-
-
-
-
-
-
-
-
0.38  
VON/OFF =5V, Vin=36V  
0.03  
VON/OFF =5V, Vin=36V  
-
-
-
-
ON/OFF (max Low) to Vout (min)  
ON/OFF (0V) to Vout (min)  
9
160  
uS  
ISOLATION  
Input-Output  
1 minute  
1 minute  
1 minute  
-
-
-
1500  
500  
-
-
-
Vdc  
Vdc  
Vdc  
Input-Case  
Output-Case  
500  
THERMAL  
Ambient  
Max. Ambient limited by OTP  
-40  
25  
95  
OTP  
oC  
Over Temperature Protection (OTP)  
Turn On (OTP)  
MTBF  
Case Temperature Greater than  
-
-
-
-
oC  
Case Temperature Less than  
85  
oC  
Calculated Using Bellcore TR-332 Method 1 case 3  
2,563,116  
hours  
MECHANICAL  
See Figure 1  
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Page 2 of 15  
TECHNICAL DATASHEET  
Rev. D  
LV12S20-100  
Table 1: Pin Assignments  
Pin #  
Pin Name  
Function  
Negative Output  
Comments  
1
2
3
4
5
6
7
8
-Vo  
-RS  
Negative Remote Sense  
Output Voltage Trim  
Positive Remote Sense  
Positive Output  
If not used, leave open or short to -Vo  
Trim  
Refer to page 6  
+RS  
If not used, leave open or short to +Vo  
+Vo  
-Vin  
Negative Input  
Chassis Ground (Case)  
CHGND  
If not used, leave open  
Key Pin/NC To Key Converter  
Leave as a No Connect pin  
If not used, leave floating for Active High Unit  
If not used, short to –Vin on an Active Low Unit  
9
ON/OFF  
+Vin  
Remote On/Off  
Positive Input  
10  
Figure 1: Mechanical Dimensions  
NOTES:  
1. PIN TO PIN TOLERANCE ± .01 [±0.3],  
PIN DIAMETER TOLERANCE: ±.005 [±0.13].  
2. CASE MATERIAL: .040 [1.02] THICK, ALUMINUM ALLOY 3003-0,  
PER: QQA 250/2.  
3. UNLESS OTHERWISE SPECIFIED.  
TO ORDER:  
4. UNIT COMES WITH EITHER 3M x 0.5 THREADED THRU  
INSERTS OR FOR Ø.125 THRU-HOLE ADD: “TH” SUFFIX TO  
MODEL PART NUMBER.  
EXAMPLE: LV12S15-100TH  
5. CONSULT FACTORY FOR OPTIONAL HEAT SINK  
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Page 3 of 15  
TECHNICAL DATASHEET  
Rev. D  
LV12S20-100  
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. During these fault conditions, the  
converter output will ‘hiccup’. The converter output will recover once the short or over current fault is removed.  
Over Temperature Protection (OTP)  
The converter has internal thermal protection that will shut the converter OFF once the case temperature exceeds  
the OTP turn-off limit. The converter will resume operation when the case temperature has dropped below the  
OTP turn-on limit.  
Input Filter  
It is recommended to bypass the +Vin and –Vin pins of the converter with a minimum of 680uF (100V minimum)  
capacitor. No other bypassing is needed. However, to reduce the input ripple beyond what is seen in Photo 1,  
larger values of capacitance may be used. Additionally, an inductor may be placed between the source and the  
previously mentioned capacitor. No inductor should be placed between the capacitor and the input to the converter.  
Figure 2: Input Filter Setup  
+Vin  
Low  
Impedance  
LV12S20-100  
680 µF  
electrolytic  
capacitor  
1 µF  
ceramic  
capacitor  
Source  
-Vin  
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. A 100uF Ceramic capacitor may be added across the +Vo and  
–Vo pins to reduce the ripple and spike noise. Additional capacitance in the form of a tantalum or aluminum  
electrolytic may also be placed across these pins in order reduce ripple and improve the transient peak-to-peak  
voltage deviation.  
Remote Sense  
To improve the regulation at the load, route the connections from the -RS and the +RS pins to the –Vo and +Vo  
connections at the load. This will force the converter to regulate the voltage at the load and not at the pins of the  
converter (refer to Graph 6). If it is not desired to use the Remotes Sense feature, the –RS and +RS pins may be  
left open or they may be shorted to the -Vo and +Vo pins respectively. Shorting the RS pins to the Vo pins will  
reduce the voltage drops through the converter pins.  
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Page 4 of 15  
TECHNICAL DATASHEET  
Rev. D  
LV12S20-100  
Remote ON/OFF  
The converter has the ability to be remotely turned ON or OFF. The LV series is Active-High. Active-High  
means that a logic high at the ON/OFF pin will enable the supply (Figure 3). With Active-High, if the ON/OFF  
pin is left floating, the supply will be enabled.  
Figure 3: Active-High  
LV Series Converter  
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Page 5 of 15  
TECHNICAL DATASHEET  
Rev. D  
LV12S20-100  
Output Voltage Trim: (5V, 12V, 15V, and 20V Models)  
The output is adjustable +/–10% of rated output voltage. To trim the output voltage down, place the trim resistor  
between the Trim and -Rs pins (Figure 5). To trim the output voltage up, place the trim resistor between the Trim  
and +Rs pins (Figure 4).  
The value of the trim resistor with respect to the desired output voltage (Vo) can be derived from the following  
formulas, or looked up on the trim table (Table 2).  
V
onom  
R
1
⋅V  
o ⋅  
R
1
⋅V  
o
U
1
(in Kohms)  
RTH =  
RTL =  
−
− Rlim  
V
o
−Vonom  
Vo  
−Vonom  
R
1
⋅V  
o
(in Kohms)  
− Rlim  
o
V
onom −V  
Figure 4: Trim Up  
Figure 5: Trim Down  
+Vout  
+Rs  
+V
out  
+Rs  
RTH  
Rload  
Pins Facing Down  
Rload  
Pins Facing Down Trim  
Trim  
RTL  
-Rs  
-Rs  
-V
out  
-V
out  
Table 2: Trim Equations for LV Series (5V, 12V, 15V, and 20V Models)  
Vonom  
20.000  
U1  
2.500  
R1  
5.11  
Rlim RTH to +Rs  
5.11 RTL to -Rs  
Percent  
Trim  
1%  
Trim Low  
Vo RTL  
Trim High  
Vo  
RTH  
19.800 500.78 20.200 3607.66 All in Kohms  
19.600 245.28 20.400 1819.16  
19.400 160.11 20.600 1222.99  
19.200 117.53 20.800 924.91  
19.000 91.98 21.000 746.06  
18.800 74.95 21.200 626.83  
18.600 62.78 21.400 541.66  
18.400 53.66 21.600 477.79  
18.200 46.56 21.800 428.10  
18.000 40.88 22.000 388.36  
2%  
3%  
Note that while decreasing the output voltage, the  
maximum output current still remains at 5A, and  
while increasing the output voltage, the output  
current is reduced to maintain a total output power  
at 100 W.  
4%  
5%  
6%  
7%  
8%  
9%  
10%  
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Page 6 of 15  
TECHNICAL DATASHEET  
Rev. D  
LV12S20-100  
Paralleling Converters  
The LV series converters may be paralleled both for redundancy and for higher output current. However, in order  
to do this, a high-current, low Vf, schottky diode must be placed at the +Vo pin of each supply as shown in Figure  
6. To improve sharing, tie the two TRIM pins together. The converters may be trimmed by adding a resistor value  
from Table 2 from each TRIM pin to ±RS pin, or alternatively, a single resistor of half the value of Table 2 from  
the common TRIM pins to the common ±RS pins.  
Figure 6: Paralleling Converters  
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Page 7 of 15  
TECHNICAL DATASHEET  
Rev. D  
LV12S20-100  
Graph 1: LV12S20-100 Efficiency vs. Output Current  
90%  
89%  
88%  
87%  
86%  
85%  
84%  
83%  
82%  
81%  
80%  
79%  
78%  
77%  
76%  
75%  
74%  
73%  
72%  
71%  
70%  
Vin=10V  
Vin=24V  
Vin=32V  
1.0  
1.5  
2.0  
2.5  
3.0  
Io (A)  
3.5  
4.0  
4.5  
5.0  
Graph 2: LV12S20-100 Max Ambient vs. Io (Vin=24V)  
5.50  
5.00  
4.50  
4.00  
3.50  
3.00  
2.50  
2.00  
1.50  
1.00  
0.50  
0.00  
with 400lfm Air  
No Airflow  
-40  
-30  
-20  
-10  
0
10  
20  
30  
40  
50  
60  
70  
80  
90  
100  
Ambient (°C)  
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Page 8 of 15  
TECHNICAL DATASHEET  
Rev. D  
LV12S20-100  
Graph 3: LV12S20-100 Input Current vs. Input Voltage  
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
10  
9
Io=0A  
Io=1.25A  
Io=2.5A  
Io=3.75A  
Io=5A  
8
7
6
5
4
3
2
1
0
9
11  
13  
15  
17  
19  
21  
23  
25  
27  
29  
31  
33  
Vin(V)  
Graph 4: LV12S20-100 Power Dissipation vs. Input Voltage  
32  
29  
26  
23  
20  
17  
14  
11  
8
Io=1.25A  
Io=3.75A  
Io=2.5A  
Io=5A  
5
2
9
11  
13  
15  
17  
19  
21  
23  
25  
27  
29  
31  
33  
Vin(V)  
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Page 9 of 15  
TECHNICAL DATASHEET  
Rev. D  
LV12S20-100  
Graph 5: LV12S20-100 Load Regulation  
Graph 6: LV12S20-100 Load Regulation  
(±RS Pins Open)  
(+RS to +Vo, -RS to -Vo)  
0.23%  
0.22%  
0.21%  
0.20%  
0.19%  
0.18%  
0.17%  
0.16%  
0.15%  
0.14%  
0.13%  
0.12%  
0.11%  
0.10%  
0.09%  
0.08%  
0.07%  
0.06%  
0.05%  
0.04%  
0.03%  
0.02%  
0.01%  
0.00%  
0.23%  
0.22%  
0.21%  
0.20%  
0.19%  
0.18%  
0.17%  
0.16%  
0.15%  
0.14%  
0.13%  
0.12%  
0.11%  
0.10%  
0.09%  
0.08%  
0.07%  
0.06%  
0.05%  
0.04%  
0.03%  
0.02%  
0.01%  
0.00%  
Vin=10V  
Vin=24V  
Vin=32V  
Vin=10V  
Vin=24V  
Vin=32V  
1.25  
2.50  
3.75  
5.00  
1.25  
2.50  
3.75  
5.00  
Io (A)  
Io (A)  
Graph 7: LV12S20-100 Line Regulation  
(+RS to +Vo, -RS to -Vo)  
0.20%  
0.19%  
0.18%  
0.17%  
0.16%  
0.15%  
0.14%  
0.13%  
0.12%  
0.11%  
0.10%  
0.09%  
0.08%  
0.07%  
0.06%  
0.05%  
0.04%  
0.03%  
0.02%  
0.01%  
0.00%  
Io=1.25A  
Io=2.5A  
Io=3.75A  
Io=5A  
10  
24  
in (V)  
32  
V
Note: Voltage measurements taken where the output pins are  
soldered into test board.  
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Page 10 of 15  
TECHNICAL DATASHEET  
Rev. D  
LV12S20-100  
Photo 1: Remote Turn On  
Photo 2: Remote Turn On  
Vin=24V, Iout = 0.5A  
Vin=24V, Iout = 5A,  
Photo 3: Normal Turn On  
Photo 4: Normal Turn On  
Vin=24V, Iout = 0.5A  
Vin=24V, Iout = 5A  
Photo 5: Remote Turn Off  
Photo 6: Remote Turn Off  
Vin=24V, Iout = 0.5A  
Vin=24V, Iout = 5A  
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Page 11 of 15  
TECHNICAL DATASHEET  
Rev. D  
LV12S20-100  
Photo 7: Transient Response 50% to 100%  
Vin=24V, Iout = 2.5 to 5A  
Photo 8: Input Reflected Ripple Voltage and Ripple Current  
Vin=24V, Iout = 10A  
Cout=1uF Ceramic + 10uF Tantalum  
with a 680uF Aluminum Electrolytic and 12uH series  
Photo 9: Output Voltage Ripple (20 MHz BW)  
Vin=24V, Iout=1A  
Photo 10: Output Voltage Ripple (20 MHz BW)  
Vin=24V, Iout=10A  
Cout=1uF Ceramic + 10uF Tantalum  
Cout=1uF Ceramic + 10uF Tantalum  
Photo 11: Output Voltage Ripple (Spike)  
Vin=24V, Iout = 10A  
Cout=1uF Ceramic + 10uF Tantalum  
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Page 12 of 15  
TECHNICAL DATASHEET  
Rev. D  
LV12S20-100  
TEST SETUP:  
The LV12S20-100 specifications are tested with the following configurations:  
Regulation and Efficiency Setup  
To ensure that accurate measurement are taken, the voltage measurements are taken directly at the terminal of the  
module. This minimizes errors due to contact and trace lengths between the load and the output of the supply. The  
following is a diagram of the test setup.  
Figure 7: Regulation and Efficiency Probe Setup  
Rtrace  
Rcontact +Vin  
Rcontact  
Rtrace  
+V
out  
V
out  
Vin  
Rload  
Rtrace R
contact  
R
contact  
Rtrace  
-Vin  
-Vout  
Output Ripple Voltage Setup  
The module is tested with a 1uF ceramic capacitor in parallel with a 10uF tantalum capacitor across the output  
terminals.  
Figure 8: Ripple Voltage Probe Setup  
SCOPE  
PROBE  
+Vout  
1 µF  
Rload  
LV12S20-100  
10 µF  
Ceramic  
Tantalum  
-Vout  
Input Reflected Ripple Current and Input Ripple Current Setup  
The module is tested for input reflected ripple current (Irrc) and input ripple current (Irc). The input ripple voltage  
is also measured at the pins with the following input filter. If there is a need to reduce input ripple current/voltage  
then additional ceramic capacitors can be added to the input of the converter.  
Figure 9: Ripple Current Setup  
SCOPE  
Irrc  
Irc  
PROBE  
12 µH  
+Vin  
-Vin  
Low  
Impedance  
Source  
LV12S20-100  
6,800 µF 1 µF  
electrolytic ceramic  
capacitor  
capacitor  
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Page 13 of 15  
TECHNICAL DATASHEET  
Rev. D  
LV12S20-100  
Converter Thermal Consideration  
The converter is designed to operate without convective cooling if the derating curves are followed. The converter  
can operate at higher temperatures if airflow is applied. Airflow should be aligned lengthwise to the converter for  
optimum heat transfer. Contact Factory for derating curves.  
Figure 10: Airflow Orientation  
+Vin  
+Vout  
Pins Facing Down  
LV12S20-100  
ON/OFF  
-Vin  
-V
out  
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Page 14 of 15  
TECHNICAL DATASHEET  
Rev. D  
LV12S20-100  
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 its 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.  
Exeter, NH 03833  
Address:  
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Page 15 of 15  

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SI9130DB

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VISHAY

SI9135LG-T1

 SMBus Multi-Output Power-Supply Controller

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VISHAY

SI9135LG-T1-E3

 SMBus Multi-Output Power-Supply Controller

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VISHAY

SI9135_11

 SMBus Multi-Output Power-Supply Controller

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VISHAY

SI9136_11

 Multi-Output Power-Supply Controller

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VISHAY

SI9130CG-T1-E3

 Pin-Programmable Dual Controller - Portable PCs

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VISHAY

SI9130LG-T1-E3

 Pin-Programmable Dual Controller - Portable PCs

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VISHAY

SI9130_11

 Pin-Programmable Dual Controller - Portable PCs

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VISHAY

SI9137

 Multi-Output, Sequence Selectable Power-Supply Controller for Mobile Applications

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VISHAY

SI9137DB

 Multi-Output, Sequence Selectable Power-Supply Controller for Mobile Applications

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VISHAY
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