MURATA LSS-T10-W12

LSS-T/10-W12
www.murata-ps.com
Adjustable Output 10 Amp SIP-mount DC/DC Converter
PRODUCT OVERVIEW
FEATURES
„
Vertical SIP-mount small footprint package
„
Output from 0.6 to 6 Volts up to
51 Watts
„
Ultra-wide 4.5 to 13.8 Vdc input range
Fabricated on a Single Inline Package (SIP) module,
the LSS-T/10-W12 series is a miniature non-isolated Point-of-Load (POL) switching DC/DC power
converter for embedded applications. The converter
offers both tight regulation and high efficiency
directly at the power usage site. Typically, no extra
outside components are required. The module
mounts vertically, occupying a tiny board footprint.
The upright mounting improves cooling airflow.
Suggested applications include powering CPU’s,
distributed bus architectures (DBA) with a master
bus power supply, programmable logic and mixed
voltage systems.
Based on synchronous buck converter topology,
the extraordinary efficiency means very low heat
and little electrical noise. The ultra wide input
range is 4.5 to 13.8 Volts. Additional features
include quick transient response to step loads and
stable no-load operation. A key feature is selectable output voltage either by precision resistor,
trim pot or user’s voltage input. The output range is
adjustable from 0.6 to 6 Vdc.
A wealth of protection features prevents damage
to both the converter and outside circuits. Inputs
are protected from undervoltage and outputs offer
short circuit protection, overcurrent and excess
temperature shut down. The unit is designed to
meet all EMI/RFI certifications as well as HALT
reliability. RoHS6 hazardous material compliance
is specified as standard. All units are precision
assembled in a highly automated computercontrolled surface mount facility with ISO-traceable
manufacturing quality standards. Additional system
functions include a remote On/Off control.
„
Outstanding thermal performance and derating
„
Extensive self-protection and short circuit
features with no output reverse conduction
„
On/Off control and trim functions
„
High efficiency up to 93% with no heatsink
„
Fully protected against temperature and voltage
limits
„
Designed to meet UL/IEC/EN60950-1
safety approvals
Simplified Block Diagram
+VIN
+VOUT
PWM
Controller
On/Off
Control
OT
Common
Common
Signal
Conditioning
Trim
Typical topology is shown.
For full details go to
www.murata-ps.com/rohs
Figure 1. LSS-T/10-W12 Series, 10 Amp Model
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Technical enquiries email: [email protected], tel: +1 508 339 3000
MDC_MDC_LSS-T10-W12.A05 Page 1 of 8
LSS-T/10-W12
Adjustable Output 10 Amp SIP-mount DC/DC Converter
Performance Specifications and Ordering Guide ➁
ORDERING GUIDE
Output
Root Model ➁
VOUT
(Volts)
LSS-T/10-W12
0.591 – 6
Input
R/N (mVp-p)➁ Regulation (Max.)➂
IOUT
(Amps Power
VIN Nom.
max) (Watts) Typ. Max.
Line
Load
(Volts)
10
60
45
75
±0.2%
±1.4%
➀ Dimensions are in inches (mm).
➁ All specifications are at nominal line voltage, VOUT = 5V and full load, +25 °C unless otherwise
noted. See detailed specifications. Output capacitors are 2 x 0.47 μF ceramic. Input cap is 22 μF.
12
Package
Range
(Volts)
IIN,
no load
(mA)
IIN,
full load
(Amps)
4.5 – 13.8
80
4.48
Efficiency
Case C72 ➀
Pinout
0.41 × 0.65 × 0.4
(10.4 × 16.5 × 10.2)
P73
Min. Typ.
91.5
93
I/O caps are necessary for our test equipment and may not be needed for your application.
➂ VIN must be 2V or higher than VOUT for 3.3 to 5V outputs.
PART NUMBER STRUCTURE
L SS - T / 10 - W12 - C
Output
Configuration:
L = Unipolar
Low Voltage
RoHS Hazardous
Substance Compliance
C = RoHS6 (does not
claim EU RoHS exemption
7b–lead in solder)
Non-Isolated SIP
Output Voltage Range
T = Trimmable, 0.6 – 6 Volts
Wide Input Voltage Range
W12 = 4.5 – 13.8 Volts (10Amp)
Maximum Rated Output
Current in Amps
MECHANICAL SPECIFICATIONS
0.41
(10.4)
0.38 MAX
(9.7)
INPUT/OUTPUT CONNECTIONS
LSS-T/10-W12
0.24 MAX
(6.1)
0.205 REF
(5.2)
Pin
1
2
3
4
5
0.65
(16.5)
0.12 (3.0)
Function P73
Enable On/Off
+VIN
Ground
+VOUT
Output Trim
Dimensions are in inches (mm shown for ref. only).
0.067 (1.7)
0.067 (1.7)
0.06 REF THK
(1.5)
Third Angle Projection
0.05
(1.3)
0.134 (3.4)
0.134 (3.4)
Figure 2 . LSS-T/10-W12 Series
Component locations are typical.
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.032 (0.8) ±.002 OR
.025 (0.6) ±.002 TYP
Tolerances (unless otherwise specified):
.XX ± 0.02 (0.5)
.XXX ± 0.010 (0.25)
Angles ± 2˚
Components are shown for reference only.
Technical enquiries email: [email protected], tel: +1 508 339 3000
MDC_MDC_LSS-T10-W12.A05 Page 2 of 8
LSS-T/10-W12
Adjustable Output 10 Amp SIP-mount DC/DC Converter
Performance/Functional Specifications
Dynamic Characteristics
All specifications are typical unless noted See Note 1.
Input
Input Voltage Range
Recommended External Fuse
Isolation
See Ordering Guide. See note 19.
20 Amps
Not isolated. The input and output
commons internally connected.
Start-up Voltage
4.2 Volts
Undervoltage Shutdown
3.4 Volts
Overvoltage Shutdown
None
Reflected (Back) Ripple Current
20 mA pk-pk
Internal Input Filter Type
Capacitive
Reverse Polarity Protection1(Note 15) See fuse information
Input Current:
Full Load Conditions
Inrush Transient
Shutdown mode (Off, UV, OT)
Output Short-Circuit
No load, 5VOUT
Low Line (VIN = Vmin, 5VOUT)
Remote On/Off Control (Note 5)
(LSS-T/10-W12, no suffix)
Positive Logic
See Ordering Guide
0.4 A2 sec
5 mA
60 mA
80 mA
11.95 Amps
On = +1.5 V to plus VIN max. or open pin
Off = 0 to +0.2 V max. or ground pin
1 mA
Current
Dynamic Load Response
20 μSec to within ±2% of final value
(0 to 50% load step, di/dt = 10A/μSec, no external caps)
Turn-On Time
6 mSec for VOUT regulated
Remote On/Off Time
6 mSec for VOUT regulated
Switching Frequency
600 kHz
Environmental
Calculated MTBF (Note 4)
Operating Temperature Range
With Derating
TBC
–45 to +85°C (Note 9)
See Derating Curves (Note 18)
Storage Temperature Range
–55 to +125°C
Thermal Protection Shutdown
+115°C
Relative Humidity
85%/+85°C
Physical
Outline Dimensions
Weight
See Mechanical Specifications
0.07 ounces (2 grams)
Electromagnetic Interference
(may require external filter)
Designed to meet FCC Part 15, EN55022,
conducted and radiated
Safety
Designed to meet UL/cUL 60950-1, CSA-C22.2
No. 60950-1, IEC/EN 60950-1
Absolute Maximum Ratings
Output
Input Voltage
Continuous or transient
15 Volts max.
Output Power
51 Watts max.
On/Off Control
0V. min to +VIN max.
Input Reverse-Polarity Protection
See Fuse section
±0.02% max. per °C of VOUT range
See Ordering Guide and Note 8
See Ordering Guide and Note 10
See Ordering Guide
Output Current
Current limited. Devices can withstand sustained
output short circuits without damage.
5,000 μF
10,000 μF
Absolute maximums are stress ratings. Exposure of devices to greater than any of these
conditions may adversely affect long-term reliability. Proper operation under conditions
other than those listed in the Performance/Functional Specifications Table is not implied
nor recommended.
Minimum Loading (Note 7)
Maximum Output Power
No minimum load
51 Watts (Note 11)
Accuracy (50% load)
±1.5% of V setting
Voltage Adjustment Range (Notes 13, 19)
Temperature Coefficient
Ripple/Noise (20MHz bandwidth)
Line Load Regulation (See Tech Notes)
Efficiency
Maximum Capacitive Loading
Cap-ESR = 0.001 to 0.01 Ω
Cap-ESR > 0.01 Ω
See Ordering Guide
Current Limit Inception (98% of VOUT setting) (Note 12)
33 Amps (after warm up)
Short Circuit Mode (Note 6, 12)
Short Circuit Current Output
0.6 Amp
Protection Method
Hiccup autorecovery upon overload
removal. (Note 16)
Short Circuit Duration
Continuous, no damage
(output shorted to ground)
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Storage Temperature
–40 to +125°C
Lead Temperature
See soldering guidelines
CAUTION: This product is not internally fused. To comply with safety agency certifications
and to avoid injury to personnel or equipment, the user must supply an external fast-blow
fuse to the input terminals. See fuse information.
Technical enquiries email: [email protected], tel: +1 508 339 3000
MDC_MDC_LSS-T10-W12.A05 Page 3 of 8
LSS-T/10-W12
Adjustable Output 10 Amp SIP-mount DC/DC Converter
Notes
(1) All models are tested and specified with external 1||10 μF ceramic/tantalum output
capacitors and a 22 μF external input capacitor. All capacitors are low ESR types. These
capacitors are necessary to accommodate our test equipment and may not be required
to achieve specified performance in your applications. All models are stable and regulate
within spec under no-load conditions.
All specifications are typical unless noted. General conditions for Specifications are
+25 °C, VIN=nominal, VOUT=5V, full load. Adequate airflow must be supplied for extended
testing under power.
(2) Input Ripple Current is tested and specified over a 5 Hz to 20 MHz bandwidth. Input filtering is CIN=2 × 100 μF, 100V tantalum, CBUS=1000 μF, 100V electrolytic, LBUS=1 μH.
(3) Note that Maximum Power Derating curves indicate an average current at nominal input
voltage. At higher temperatures and/or lower airflow, the DC/DC converter will tolerate
brief full current outputs if the total RMS current over time does not exceed the Derating
curve. All Derating curves are presented at sea level altitude. Be aware of reduced power
dissipation with increasing density altitude.
(4) Mean Time Before Failure is calculated using the Telcordia (Belcore) SR-332 Method 1,
Case 3, ground fixed conditions, Tpcboard=+25°C, full output load, natural air convection.
(5) The On/Off Control is normally controlled by a switch or open collector or open drain transistor. But it may also be driven with external logic or by applying appropriate external
voltages which are referenced to Input Common.
(6) Short circuit shutdown begins when the output voltage degrades approximately 2% from
the selected setting.
(7) The outputs are not intended to sink appreciable reverse current. This may damage the
outputs.
(8) Output noise may be further reduced by adding an external filter. See I/O Filtering and
Noise Reduction. Use only as much output filtering as needed and no more. Larger caps
may slow transient response or degrade dynamic performance. Thoroughly test your
system under full load, especially with low-ESR ceramic capacitors.
(9) All models are fully operational and meet published specifications, including “cold start” at
–40°C.
(10) Regulation specifications describe the deviation as the line input voltage or output load
current is varied from a nominal midpoint value to either extreme.
(11) For the LSS-T/10-W12, the maximum rated output power is 51 Watts (5.1 Volts and
10 Amps). Output adjustment up to 6 Volts must reduce current to remain within the
51 Watt output limit.
(12) Output current limit and short circuit protection is non-latching. When the overcurrent
fault is removed, the converter will immediately recover.
(13) Do not exceed maximum power specifications when adjusting the output trim.
(14) At zero output current, the output may contain low frequency components which exceed
the ripple specification. The output may be operated indefinitely with no load.
(15) Input Fusing: If reverse polarity is accidentally applied to the input, a body diode will
become forward biased and will conduct considerable current. To ensure reverse input
protection with full output load, always connect an external input fast-blow fuse in series
with the +VIN input. Use approximately twice the full input current rating with nominal
input voltage.
(16) “Hiccup” overcurrent operation repeatedly attempts to restart the converter with a brief,
full-current output. If the overcurrent condition still exists, the restart current will be
removed and then tried again. This short current pulse prevents overheating and damaging the converter. Once the fault is removed, the converter immediately recovers normal
operation.
(17) Output accuracy is dependent on user-supplied trim resistors. To achieve high accuracy,
use ±1% or better tolerance metal-film resistors.
(18) At full power, on-board component package temperatures must not exceed +128°C.
(19) VIN must be 2 Volts or higher than VOUT for +3.3 to +5V outputs.
Trim Connections
+VOUT
RTRIM
Trim
RLOAD
Ground
RTRIM (kΩ) =
1.182
VOUT − 0.591
Soldering Guidelines
Murata Power Solutions recommends the specifications below when installing these converters. These specifications vary depending on the solder type. Exceeding these specifications may cause damage to the product. Be cautious when there is high atmospheric humidity. We strongly recommend a mild pre-bake (100° C. for 30 minutes). Your production
environment may differ; therefore please thoroughly review these guidelines with your process engineers.
Wave Solder Operations for through-hole mounted products (THMT)
For Sn/Ag/Cu based solders:
For Sn/Pb based solders:
Maximum Preheat Temperature
115° C.
Maximum Preheat Temperature
105° C.
Maximum Pot Temperature
270° C.
Maximum Pot Temperature
250° C.
Maximum Solder Dwell Time
7 seconds
Maximum Solder Dwell Time
6 seconds
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Technical enquiries email: [email protected], tel: +1 508 339 3000
MDC_MDC_LSS-T10-W12.A05 Page 4 of 8
LSS-T/10-W12
Adjustable Output 10 Amp SIP-mount DC/DC Converter
PERFORMANCE DATA: EFFICIENCY VS LINE VOLTAGE AND LOAD CURRENT
Ta = +25°C
VOUT = 1.2V
VOUT = 3.3V
92%
98%
90%
96%
88%
94%
86%
92%
VIN = 4.5 V
VIN = 12 V
VIN = 14 V
90%
82%
VIN = 7 V
80%
VIN = 12 V
78%
VIN = 14 V
Efficiency (%)
Efficiency (%)
84%
88%
86%
84%
76%
82%
74%
80%
72%
78%
70%
76%
68%
1A
2A
3A
4A
5A
6A
7A
8A
9A
1A
10A
2A
3A
4A
Load Current (Amps)
5A
6A
7A
8A
9A
10A
7A
8A
9A
10A
7A
8A
9A
10A
Load Current (Amps)
VOUT = 1.8V
VOUT = 5V
96%
100%
94%
98%
92%
96%
90%
94%
88%
Efficiency (%)
84%
82%
VIN = 7 V
90%
VIN = 12 V
88%
VIN = 14 V
86%
80%
84%
78%
76%
82%
74%
80%
72%
78%
1A
2A
3A
4A
5A
6A
7A
8A
9A
10A
1A
2A
3A
4A
Load Current (Amps)
5A
6A
Load Current (Amps)
VOUT = 6V
100%
98%
96%
94%
VIN = 7 V
92%
Efficiency (%)
Efficiency (%)
92%
VIN = 4.5 V
VIN = 12 V
VIN = 14 V
86%
VIN = 12 V
90%
VIN = 14 V
88%
86%
84%
82%
80%
78%
1A
2A
3A
4A
5A
6A
Load Current (Amps)
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Technical enquiries email: [email protected], tel: +1 508 339 3000
MDC_MDC_LSS-T10-W12.A05 Page 5 of 8
LSS-T/10-W12
Adjustable Output 10 Amp SIP-mount DC/DC Converter
PERFORMANCE DATA: MAXIMUM CURRENT TEMPERATURE DERATING
(VIN = 12V, transverse airflow, at sea level)
VOUT = 1.2V
VOUT = 2.5V
10.00
9.75
300 LFM
400 LFM
9.50
9.25
9.00
Output Current (Amps)
8.75
8.25
Natural
a
Convection
100 LFM
200 LFM
8.00
7.75
7.50
7.25
7.00
6.75
6.50
6.25
6.00
5.75
5.50
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
300 LFM
400 LFM
Natural Convection
100 LFM
200 LFM
20
25
30
35
40
Ambient Temperature (°C)
45
300 LFM
400 LFM
9.75
9.50
9.25
Output Current (Amps)
9.00
8.75
8.50
8.25
Natural Convection
100 LFM
200 LFM
7.75
7.50
7.25
7.00
6.75
6.50
6.25
6.00
5.75
5.50
25
30
35
40
45
50
55
60
65
70
75
80
85
10.03
9.78
9.53
9.28
9.03
8.78
8.53
8.28
8.03
7.78
7.53
7.28
7.03
6.78
6.53
6.28
6.03
5.78
5.53
5.28
5.03
4.78
4.53
60
65
70
75
80
85
90
70
75
80
85
90
70
75
80
85
90
300 LFM
400 LFM
Natural Convection
100 LFM
200 LFM
20
90
25
30
35
40
45
50
55
60
65
Ambient Temperature (ºC)
Ambient Temperature (°C)
VOUT = 5V
Output Current (Amps)
20
55
VOUT = 3.3V
10.00
8.00
50
Ambient Temperature (°C)
VOUT = 1.8V
Output Current (Amps)
Output Current (Amps)
s
8.50
10.03
9.78
9.53
9.28
9.03
8.78
8.53
8.28
8.03
7.78
7.53
7.28
7.03
6.78
6.53
6.28
6.03
5.78
5.53
5.28
5.03
4.78
4.53
10.03
9.78
9.53
9.28
9.03
8.78
8.53
8.28
8.03
7.78
7.53
7.28
7.03
6.78
6.53
6.28
6.03
5.78
5.53
5.28
5.03
4.78
4.53
300 LFM
400 LFM
Natural Convection
100 LFM
200 LFM
20
25
30
35
40
45
50
55
60
65
Ambient Temperature (°C)
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Technical enquiries email: [email protected], tel: +1 508 339 3000
MDC_MDC_LSS-T10-W12.A05 Page 6 of 8
LSS-T/10-W12
Adjustable Output 10 Amp SIP-mount DC/DC Converter
PERFORMANCE DATA: OUTPUT RIPPLE AND NOISE (PARD)
VIN = 12V
VOUT = 1.2V
VOUT = 3.3V
VOUT = 1.8V
VOUT = 5V
VOUT = 2.5V
VOUT = 6V
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Technical enquiries email: [email protected], tel: +1 508 339 3000
MDC_MDC_LSS-T10-W12.A05 Page 7 of 8
LSS-T/10-W12
Adjustable Output 10 Amp SIP-mount DC/DC Converter
PERFORMANCE DATA: TURN-ON, TURN-OFF TIMES
VIN = 12V
On/Off Enable
VIN Power On
On/Off Disable
VIN Power Off
USA:
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356
www.murata-ps.com email: [email protected] ISO 9001 and 14001 REGISTERED
03/25/09
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply
the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without
notice.
© 2009 Murata Power Solutions, Inc.
www.murata-ps.com
Mansfield (MA), Tel: (508) 339-3000, email: [email protected]
Canada:
Toronto, Tel: (866) 740-1232, email: [email protected]
UK:
Milton Keynes, Tel: +44 (0)1908 615232, email: [email protected]
France:
Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: [email protected]
Germany:
München, Tel: +49 (0)89-544334-0, email: [email protected]
Japan:
Tokyo, Tel: 3-3779-1031, email: [email protected]
Osaka, Tel: 6-6354-2025, email: [email protected]
China:
Shanghai, Tel: +86 215 027 3678, email: [email protected]
Guangzhou, Tel: +86 208 221 8066, email: [email protected]
Singapore:
Parkway Centre, Tel: +65 6348 9096, email: [email protected]
Technical enquiries email: [email protected], tel: +1 508 339 3000
MDC_MDC_LSS-T10-W12.A05 Page 8 of 8