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Data Sheet August 1998
LC/LW010- and LC/LW015-Series Power Modules: 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
Features
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Low profile: 10.2 mm x 25.4 mm x 50.8 mm (0.4 in. x 1.0 in. x 2.0 in.) with standoffs (9.6 mm (0.38 in.) with standoffs recessed) Wide input voltage range: 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Output current limiting, unlimited duration Output overvoltage clamp Undervoltage lockout Input-to-output isolation: 1500 V Operating case temperature range: -40 C to +105 C
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The LC/LW010- and LC/LW015-Series Power Modules use advanced, surface-mount technology and deliver high-quality, compact, dc-dc conversion at an economical price.
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UL* 1950 Recognized, CSA 22.2 No. 950-95 Certified, IEC950, and VDE0805 Licensed
CE mark meets 73/23/EEC and 93/68/EEC directives Within FCC and VDE Class A radiated limits
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Options
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Remote on-off Choice of on/off configuration Short pin: 2.8 mm 0.25 mm (0.110 in. 0.010 in.) Synchronization (cannot be ordered on units with remote on/off) Output voltage adjust: 90% to 110% of VO, nom (single outputs only) Tight output voltage tolerance
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Applications
Telecommunications Distributed power architectures Private branch exchange (PBX) Voice and data multiplexing
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Description
The L Single- and Dual-Output-Series Power Modules are low-profile, dc-dc converters that operate over an input voltage range of 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc and provide one or two precisely regulated outputs. The outputs are isolated from the input, allowing versatile polarity configurations and grounding connections. The modules have a maximum power rating of 10 W to 15 W and efficiencies of up to 84% for a 5 V output and 82% for a 3.3 V output. Built-in filtering for both input and output minimizes the need for external filtering.
* UL is a registered trademark of Underwriters Laboratories, Inc. CSA is a registered trademark of Canadian Standards Association. This product is intended for integration into end-use equipment. All the required procedures for CE marking of end-use equipment should be followed. (The CE mark is placed on selected products.)
LC/LW010- and LC/LW015-Series Power Modules: 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
Data Sheet August 1998
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability. Parameter Input Voltage: Continuous Transient (100 ms) Operating Case Temperature (See Derating Curves, Figures 43--45.) Storage Temperature I/O Isolation Device LC LW LW All All All Symbol VI VI VI, trans TC Tstg -- Min 0 0 0 -40 -55 -- Typ -- -- -- -- -- -- Max 50 80 100 105* 125 1500 Unit Vdc Vdc V C C Vdc
* Maximum case temperature varies based on power dissipation. See derating curves, Figures 43--45, for details.
Electrical Specifications
Table 1. Input Specifications Parameter Operating Input Voltage Maximum Input Current (VI = 0 to VI, max; IO = IO, max; see Figures 1--4.) Inrush Transient Input Reflected-ripple Current (5 Hz to 20 MHz; 12 H source impedance; TA = 25 C; see Figure 33.) Input Ripple Rejection (100 Hz--120 Hz) Fusing Considerations CAUTION: This power module is not internally fused. An input line fuse must always be used. This encapsulated power module can be used in a wide variety of applications, ranging from simple stand-alone operation to an integrated part of a sophisticated power architecture. To preserve maximum flexibility, internal fusing is not included; however, to achieve maximum safety and system protection, always use an input line fuse. The safety agencies require a normal-blow, dc fuse with a maximum rating of 5 A (see Safety Considerations section). Based on the information provided in this data sheet on inrush energy and maximum dc input current, the same type of fuse with a lower rating can be used. Refer to the fuse manufacturer's data for further information. Device LC LW LC LW All All Symbol VI VI II, max II, max I2t II Min 18 36 -- -- -- -- Typ 24 48 -- -- -- 5 Max 36 75 1.6 800 0.2 -- Unit Vdc Vdc A mA A2s mAp-p
All
--
--
45
--
dB
2
Tyco Electronics Corp.
Data Sheet August 1998
LC/LW010- and LC/LW015-Series Power Modules: 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
Electrical Specifications (continued)
Table 2. Output Specifications Parameter Output Voltage Set Point (VI = VI, nom; IO = IO, max; TA = 25 C) Device Code or Suffix D G* F A B C AJ BK CL Output Voltage (Over all line, load, and temperature conditions until end of life; see Figures 35 and 37.) D G* F A B C AJ BK CL Output Regulation (See Figures 5--11): Line (VI = VI, min to VI, max) Load (IO = IO, min to IO, max) Load (IO = IO, min to IO, max) Temperature (TC = -40 C to +85 C) Output Ripple and Noise (Across 2 x 0.47 F ceramic capacitors; see Figures 34 and 36.): RMS Symbol VO, set VO, set VO, set VO, set VO, set VO, set VO1, set VO2, set VO1, set VO2, set VO1, set VO2, set VO, set VO, set VO, set VO, set VO, set VO, set VO1, set VO2, set VO1, set VO2, set VO1, set VO2, set Min 1.92 -- 3.17 4.85 11.52 14.40 4.75 -4.75 11.40 -11.40 14.25 -14.25 1.90 -- 3.13 4.80 11.40 14.25 4.5 -4.5 10.80 -10.80 13.50 -13.50 Typ 2.0 2.5 3.3 5.0 12.0 15.0 5.0 -5.0 12.0 -12.0 15.0 -15.0 -- 2.5 -- -- -- -- -- -- -- -- -- -- Max 2.08 -- 3.43 5.20 12.48 15.60 5.25 -5.25 12.60 -12.60 15.75 -15.75 2.10 -- 3.47 5.25 12.60 15.75 5.5 -5.5 13.20 -13.20 16.50 -16.50 Unit Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc
A, F, D, G* B, C Lx010 A, F, D, G* B, C Lx015 A, F, D, G* B, C A, F, D, G* B, C
-- -- -- -- -- -- -- --
-- -- -- -- -- -- -- --
-- 0.01 -- 0.1 -- 0.1 25 0.5
5 0.1 10 0.2 15 0.2 100 2.0
mV %VO mV %VO mV %VO mV %VO
Peak-to-peak (5 Hz to 20 MHz)
External Load Capacitance
A, D, F, G* AJ, B, C BK, CL A, D, F, G* AJ, B, C BK, CL A, F, D, G* B, C
-- -- -- -- -- -- -- --
-- -- -- -- -- -- -- --
-- -- -- -- -- -- -- --
30 35 50 100 120 150 1000 200
mVrms mVrms mVrms mVp-p mVp-p mVp-p F F
* For a 2.5 V output, use the 2 V output module (D code) with an output voltage trim pin (optional feature).
Tyco Electronics Corp.
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LC/LW010- and LC/LW015-Series Power Modules: 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
Data Sheet August 1998
Electrical Specifications (continued)
Table 2. Output Specifications (continued) Parameter Output Current (At IO < IO, min, the modules may exceed output ripple specifications, but operation is guaranteed.) Note: On the Lx01xF, the output voltage may exceed specifications when IO < IO, min. Device Code or Suffix Lx015D Lx015F Lx015A Lx015B Lx015C Lx010D, G* Lx010F Lx010A Lx010B Lx010C Lx010AJ Lx010BK Lx010CL Lx015D Lx015F Lx015A Lx015B Lx015C Lx010D, G* Lx010F Lx010A Lx010B Lx010C Lx010AJ Lx010BK Lx010CL Lx015D Lx015F Lx015A Lx015B Lx015C Lx010D, G* Lx010F Lx010A Lx010B Lx010C Lx010AJ Lx010BK Lx010CL Symbol IO IO IO IO IO IO IO IO IO IO IO1, IO2 IO1, IO2 IO1, IO2 IO IO IO IO IO IO IO IO IO IO IO1, IO2 IO1, IO2 IO1, IO2 IO IO IO IO IO IO IO IO IO IO IO1, IO2 IO1, IO2 IO1, IO2 Min 0.35 0.25 0.15 0.12 0.10 0.2 0.15 0.1 0.08 0.06 0.1 0.06 0.05 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Typ -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Max 3.0 3.0 3.0 1.25 1.0 2.0 2.42 2.0 0.83 0.67 1.0 0.42 0.33 7.5 6.5 5 3.1 2.5 7.0 5 4 2.5 2 4.0 2.5 2.5 8.5 8.5 7.5 4.5 4.5 8 7.5 6 3.5 3.5 6.0 3.5 3.5 Unit A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A
Output Current-limit Inception (VO = 90% VO, set; see Figures 12--14.)
Output Short-circuit Current (VO = 0.25 V)
* For a 2.5 V output, use the 2 V output module (D code) with an output voltage trim pin (optional feature).
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Tyco Electronics Corp.
Data Sheet August 1998
LC/LW010- and LC/LW015-Series Power Modules: 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
Electrical Specifications (continued)
Table 2. Output Specifications (continued) Parameter Efficiency (VI = VI, nom; IO = IO, max; TA = 25 C; see Figures 15--28, 35, and 37.) Device Code or Suffix LC015D LC015F LC015A LC015B, C LC010D, G* LC010F LC010A, B, C LC010AJ, BK, CL LW015D LW015F LW015A LW015B, C LW010D, G* LW010F LW010A, B, C LW010AJ, BK, CL LC015F LC015A LW015F LW015A All Symbol -- Min 64 74 77 73 65 71 75 75 66 76 79 75 67 73 77 77 -- -- -- -- -- Typ 67 77 80 76 68 75 79 78 69 79 82 78 70 76 81 80 79 82 82 84 265 Max -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Unit % % % % % % % % % % % % % % % % % % % % kHz
Efficiency (VI = VI, nom; IO = 2 A; TA = 25 C; see Figures 15, 18, 22, and 25.) Switching Frequency Dynamic Response (for duals: IO1 or IO2 = IO, max; IO/t = 1A/10 s; VI = VI, nom; TA = 25 C; see Figures 29 and 30.): Load Change from IO = 50% to 75% of IO, max: Peak Deviation Settling Time (VO < 10% of peak deviation) Load Change from IO = 50% to 25% of IO, max: Peak Deviation Settling Time (VO < 10% of peak deviation)
All All
-- --
-- --
2 0.8
-- --
%VO, set ms
All All
-- --
-- --
2 0.8
-- --
%VO, set ms
* For a 2.5 V output, use the 2 V output module (D code) with an output voltage trim pin (optional feature).
Table 3. Isolation Specifications Parameter Isolation Capacitance Isolation Resistance Min -- 10 Typ 600 -- Max -- -- Unit pF M3/4
Tyco Electronics Corp.
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LC/LW010- and LC/LW015-Series Power Modules: 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
Data Sheet August 1998
Electrical Specifications (continued)
Table 4. General Specifications Parameter Calculated MTBF (IO = 80% of IO, max; TC = 40 C): Lx010 Lx015 Weight Hand Soldering (soldering iron 3 mm (0.125 in.) tip, 425 C) Table 5. Feature Specifications Parameter Remote On/Off Signal Interface (optional): (VI = 0 V to VI, max; open collector or equivalent compatible; signal referenced to VI(-) terminal. See Figure 38 and Feature Descriptions.): Positive Logic-- Device Code Suffix "4": Logic Low--Module Off Logic High--Module On Negative Logic-- Device Code Suffix "1": Logic Low--Module On Logic High--Module Off Module Specifications: On/Off Current--Logic Low On/Off Voltage: Logic Low Logic High (Ion/off = 0) Open Collector Switch Specifications: Leakage Current During Logic High (Von/off = 10 V) Output Low Voltage During Logic Low (Ion/off = 1 mA) Turn-on Delay and Rise Times (At 80% of IO, max; TA = 25 C; see Figures 31 and 32.): Case 1: On/Off Input Is Set for Unit On and then Input Power Is Applied (delay from point at which VI = VI, min until VO = 10% of VO, nom). Case 2: Input Power Is Applied for at Least One Second, and then the On/Off Input Is Set to Turn the Module On (delay from point at which on/off input is toggled until VO = 10% of VO, nom). Output Voltage Rise Time (time for VO to rise from 10% of VO, nom to 90% of VO, nom) Output Voltage Overshoot (at 80% of IO, max; TA = 25 C) Device Code or Suffix Symbol Min Typ Max Unit Min -- -- -- -- Typ 7,800,000 5,400,000 -- -- Max -- -- 28.3 (1.0) 12 Unit hours hours g (oz.) s
All All All All All
Ion/off Von/off Von/off Ion/off Von/off
-- -0.7 -- -- --
-- -- -- -- --
1.0 1.2 10 50 1.2
mA V V A V
All
Tdelay
--
5
20
ms
All
Tdelay
--
1
10
ms
All
Trise
--
0.2
5
ms
All
--
--
--
5
%
6
Tyco Electronics Corp.
Data Sheet August 1998
LC/LW010- and LC/LW015-Series Power Modules: 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
Electrical Specifications (continued)
Table 5. Feature Specifications (continued) Parameter Output Voltage Set-point Adjustment Range (optional: single outputs only) Output Overvoltage Clamp (VO, clamp may be set higher on units with output voltage set-point adjustment option.) Device Code or Suffix A, B, F C D D F A B C AJ BK CL Undervoltage Lockout LCxxx LWxxx Symbol -- -- -- VO, clamp VO, clamp VO, clamp VO, clamp VO, clamp VO1, clamp VO2, clamp VO1, clamp VO2, clamp VO1, clamp VO2, clamp Vuvlo Vuvlo Min 90 90 90 2.60 3.7 5.6 13.2 16.5 5.6 -5.6 13.2 -13.2 16.5 -16.5 11 20 Typ -- -- -- -- -- -- -- -- -- -- -- -- -- -- 14 27 Max 110 100 125 4.0 5.7 7.0 16.0 21.0 7.0 -7.0 18.0 -18.0 21.0 -21.0 -- -- Unit %VO, nom %VO, nom %VO, nom V V V V V V V V V V V V V
Characteristic Curves
1.4 1.2 INPUT CURRENT, II (A)
0.9 0.8 INPUT CURRENT, II (A) 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 0 5 10 15 20 25 30 35 40 INPUT VOLTAGE, V I (V)
8-1785(C)
1.0 0.8 0.6 0.4 0.2 0.0 0 5 10 15 20 25 30 35 40
INPUT VOLTAGE, V I (V)
8-1786(C)
Figure 2. LC015 Input Current vs. Input Voltage at IO = IO, max and TC = 25 C
Figure 1. LC010 Input Current vs. Input Voltage at IO = IO, max and TC = 25 C
Tyco Electronics Corp.
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LC/LW010- and LC/LW015-Series Power Modules: 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
Data Sheet August 1998
Characteristics Curves (continued)
OUTPUT VOLTAGE 1, VO1(V)
0.50 0.45 INPUT CURRENT, II (A) 0.40 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0.00 0 10 20 30 40 50 60 70 80 INPUT VOLTAGE, V I (V)
8-1787(C)
5.15
5.10
VI = LOW LINE VI = NOM LINE VI = HIGH LINE
5.05
5.00
4.95
4.90 0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9 1.0
OUTPUT CURRENT 1, IO1 (A)
8-1790(C)
Figure 3. LW010 Input Current vs. Input Voltage at IO = IO, max and TC = 25 C
0.7 0.6 INPUT CURRENT, II (A) 0.5
Note: Output2 has characteristics similar to output1 when IO1 = 0.5 A and IO2 varies.
Figure 6. Lx010AJ Typical Load Regulation of Output1 with Fixed IO2 = 0.5 A at TC = 25 C
5.25 OUTPUT VOLTAGE 1, VO1 (V) 5.20 VI = LOW LINE 5.15 5.10 VI = NOM LINE VI = HIGH LINE 5.05 5.00 4.95 0.0
0.4 0.3 0.2 0.1 0.0 0 10 20 30 40 50 60 70 80
INPUT VOLTAGE, V I (V)
8-1788(C)
Figure 4. LW015 Input Current vs. Input Voltage at IO = IO, max and TC = 25 C
NORMALIZED OUTPUT VOLTAGE (VO/VO, set ) 1.003 1.002 1.001 VI = LOW LINE 1.000 0.999 VI = NOM LINE VI = HIGH LINE 0.998 0.997 0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9 1.0
OUTPUT CURRENT 2, IO2 (A)
8-1791(C)
Note: Output2 has characteristics similar to output1 when IO2 = 0.1 A and IO1 varies.
Figure 7. Lx010AJ Typical Cross Regulation, VO1 vs. IO2 with Fixed IO1 = 0.1 A at TC = 25 C
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
max)
0.9 1.0
NORMALIZED OUTPUT CURRENT (IO/IO,
8-1789(C)
Figure 5. Lx010x/Lx015x Single-Output Load Regulation, Normalized Output Voltage vs. Normalized Output Current at TC = 25 C 8 Tyco Electronics Corp.
Data Sheet August 1998
LC/LW010- and LC/LW015-Series Power Modules: 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
Characteristics Curves (continued)
NORMALIZED OUTPUT VOLTAGE 1 (VO1/VO1, set )
1.023 1.020 1.016 1.013 1.010 IO = IO, min 1.007 1.003 1.000 0.996 0.0 0.15 0.30 VI = LOW LINE VI = NOM LINE VI = HIGH LINE IO = IO, max
5.00 OUTPUT VOLTAGE 1, VO1 (V)
4.95
4.90
4.85 VI = HIGH LINE VI = NOM LINE VI = LOW LINE
4.80
0.45
0.60
0.75
0.90
max)
1.05
4.75 0.0
NORMALIZED OUTPUT CURRENT 2 (IO2/IO2,
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9 1.0
8-1794(C)
OUTPUT CURRENT 2, IO2 (A)
8-1792(C)
Note: Output2 has characteristics similar to output1 when IO2 = IO, min and IO1 varies.
Note: Output2 has characteristics similar to output1 when IO2 = 1.0 A and IO1 varies.
Figure 8. Lx010AJ Typical Cross Regulation, VO1 vs. IO2 with Fixed IO1 = 1.0 A at TC = 25 C
Figure 10. Lx010BK, CL Typical Cross Regulation, Normalized VO1 vs. Normalized IO2 with Fixed IO1 = IO, min at TC = 25 C
1.006
set)
1.000 0.993 0.987 0.980 0.973 0.966 0.960 0.953 0.0 0.15 0.30 0.45 0.60 0.75 0.90 1.05 IO = IO, min VI = LOW LINE VI = NOM LINE VI = HIGH LINE IO = IO, max
NORMALIZED OUTPUT VOLTAGE 1 (VO1/VO1, set )
1.020 1.016 1.013 1.010 1.006 1.003 1.000 0.996 0.993 0.990 0.0 0.15 0.30 IO = IO, min VI = HIGH LINE IO = IO, max VI = LOW LINE VI = NOM LINE
NORMALIZED OUTPUT VOLTAGE 1 (VO1/VO1,
NORMALIZED OUTPUT CURRENT 2 (IO2/IO2,
max)
0.45
0.60
0.75
0.90
max)
1.05
8-1795(C)
NORMALIZED OUTPUT CURRENT (IO1/IO1,
Note: Output2 has characteristics similar to output1 when IO2 = IO, max and IO1 varies.
8-1793(C)
Note: Output2 has characteristics similar to output1 when IO1 = (0.5 * IO, max) and IO2 varies.
Figure 11. Lx010BK, CL Typical Cross Regulation, Normalized VO1 vs. Normalized IO2 with Fixed IO1 = IO, max at TC = 25 C
Figure 9. Lx010BK, CL Load Regulation of Output1 with Fixed IO2 = 0.5 * IO, max at TC = 25 C, Normalized VO1 vs. Normalized Current IO1
Tyco Electronics Corp.
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LC/LW010- and LC/LW015-Series Power Modules: 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
Data Sheet August 1998
NORMALIZED OUTPUT VOLTAGE 1 (VO1/VO1, set )
Characteristics Curves (continued)
set)
1.2 1.0 0.8 0.6 0.4 0.2 0.0 0.00 VI = LOW LINE VI = NOM LINE VI = HIGH LINE
1.0
NORMALIZED OUTPUT VOLTAGE (VO/VO,
0.5 VI = LOW LINE VI = NOM LINE VI = HIGH LINE
0.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 NORMALIZED OUTPUT CURRENT 1 WITH OUTPUT CURRENT 2 SET TO IO, max (IO1/IO1, max)
8-1798(C)
0.25
0.50
0.75
1.00
1.25
1.50
1.75 2.00
max)
OUTPUT CURRENT NORMALIZED TO IO, max (IO/IO,
8-1796(C)
Figure 12. Lx010x/Lx015x Single-Output Normalized Output Current vs. Normalized Output Voltage at TC = 25 C
Note: Output2 has characteristics similar to output1 when output1 is set to IO, max.
Figure 14. Lx010xx Dual-Output Normalized Output Current vs. Normalized Output Voltage at TC = 25 C with Other Output at IO = IO, max
1.0 NORMALIZED OUTPUT VOLTAGE 1 (VO1/VO1, set )
86 84 EFFICIENCY, (%) 82 80 78 76 74 72 70 0.0
8-1797(C)
0.5 VI = NOM LINE VI = LOW LINE VI = HIGH LINE
VI = 18 V VI = 20 V VI = 27 V VI = 36 V
0.0 0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
NORMALIZED OUTPUT CURRENT 1 WITH OUTPUT CURRENT 2 SET TO IO, min (IO1/IO1, max)
0.5
1.0
1.5
2.0
2.5
3.0
OUTPUT CURRENT, IO (A)
8-1800(C)
Note: Output2 has characteristics similar to output1 when output1 is set to IO, min.
Figure 13. Lx010xx Dual-Output Normalized Output Current vs. Normalized Output Voltage at TC = 25 C with Other Output at IO, min
Figure 15. LC015A Typical Efficiency vs. Output Current at TC = 25 C
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Tyco Electronics Corp.
Data Sheet August 1998
LC/LW010- and LC/LW015-Series Power Modules: 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
Characteristics Curves (continued)
EFFICIENCY, (%)
82 80
85
78 76 74 72 70 0.0 VI = 36 V VI = 27 V VI = 18 V
80 EFFICIENCY, (%)
75
70
65
VI = 18 V VI = 27 V VI = 36 V
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
max)
0.9 1.0
NORMALIZED OUTPUT CURRENT (IO/IO,
60 0.0
0.16
0.32
0.48
0.64
0.80
max)
0.96
8-1803(C)
NORMALIZED OUTPUT CURRENT (IO/IO,
8-1801(C)
Figure 19. LC010A, B, C Typical Efficiency vs. Normalized Output Current at TC = 25 C
Figure 16. LC015B, C Typical Efficiency vs. Normalized Output Current at TC = 25 C
80 75 EFFICIENCY, (%)
72 70 EFFICIENCY, (%) 68 66 64 62 60 58 0 0.5 1 1.5 2 2.5 3 VI = 36 V VI = 27 V VI = 18 V
70 65 60 55 50 45 40 0.0 0.5 1.0 1.5 2.0 2.5 VI = 36 V VI = 27 V VI = 18 V
OUTPUT CURRENT, IO (A)
8-1804(C)
OUTPUT CURRENT, IO (A)
8-2049(C)
Figure 20. LC010F Typical Efficiency vs. Output Current at TC = 25 C
Figure 17. LC010D and LC015D Typical Efficiency vs. Output Current at TC = 25 C
80 78 76 EFFICIENCY, (%)
82 80 EFFICIENCY, (%) 78 76 74 72 70 0.0 0.5 1.0 1.5 2.0 2.5 3.0
74 72 70 68 66 64 62 VI = 36 V VI = 24 V VI = 18 V
VI = 36 V VI = 27 V VI = 18 V
60 0.10
0.23
0.35
0.47
0.59
0.71
0.83
0.95
NORMALIZED OUTPUT CURRENT, IO1 = IO2 [(IO1 + IO2)/(IO1, max + IO2, max)]
8-1805(C)
OUTPUT CURRENT, IO (A)
8-1802(C)
Figure 21. LC010AJ, BK, CL Typical Efficiency vs. Normalized Output Current at TC = 25 C
Figure 18. LC015F Typical Efficiency vs. Output Current at TC = 25 C Tyco Electronics Corp. 11
LC/LW010- and LC/LW015-Series Power Modules: 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
Data Sheet August 1998
Characteristics Curves (continued)
EFFICIENCY, (%)
85 80
90 85 EFFICIENCY, (%) 80 75 70 65 60 0.0 VI = 75 V VI = 48 V VI = 36 V
75 VI = 75 V VI = 48 V VI = 36 V
70
65
60 0.0
0.5
1.0
1.5
2.0
2.5
3.0
OUTPUT CURRENT, I (A) O
0.5
1.0
1.5
2.0
2.5
3.0
8-1861(C)
O OUTPUT CURRENT, I (A)
8-1864(C)
Figure 25. LW015F Typical Efficiency vs. Output Current at TC = 25 C
Figure 22. LW015A Typical Efficiency vs. Output Current at TC = 25 C
82 80 EFFICIENCY, (%)
82 80 EFFICIENCY, (%) 78 76 74 72 70 0.05 VI = 75 V VI = 48 V VI = 36 V
78 76 74 72 70 0.0 VI = 75 V VI = 48 V VI = 36 V
0.14
0.20
0.43
0.57
0.71
0.86
1.0
NORMALIZED OUTPUT CURRENT (IO/IO, max )
0.19 0.33 0.5 0.66 0.83 1.0
8-1860(C)
NORMALIZED OUTPUT CURRENT (IO/IO, max)
8-1863(C)
Figure 26. LW010A, B, C Typical Efficiency vs. Normalized Output Current at TC = 25 C
Figure 23. LW015B, C Typical Efficiency vs. Normalized Output Current at TC = 25 C
80 78
80
EFFICIENCY, (%)
76 74 72 70 68 66 64 62 60 0.0 0.5 1.0 1.5 2.0 2.5 VI = 75 V VI = 48 V VI = 36 V
70 EFFICIENCY, (%) 60 50 40 30 20 10 0.0 VI = 75 V VI = 48 V VI = 36 V
OUTPUT CURRENT, I (A) O
0.5
1.0
1.5
2.0
2.5
3.0
8-1859(C)
O OUTPUT CURRENT, I (A)
8-1862(C)
Figure 27. LW010F Typical Efficiency vs. Output Current at TC = 25 C
Figure 24. LW010D, 015D Typical Efficiency vs. Output Current at TC = 25 C 12 Tyco Electronics Corp.
Data Sheet August 1998
LC/LW010- and LC/LW015-Series Power Modules: 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
85
NORMALIZED OUTPUT VOLTAGE; VO/VO, set SINGLE OUTPUTS, VO1/VO1, set DUAL OUTPUTS
8-1858(C)
Characteristics Curves (continued)
80 EFFICIENCY, (%)
1.0
75
70
65
VI = 75 V VI = 48 V VI = 36 V
0 1.0
60 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 NORMALIZED OUTPUT CURRENT, IO1 = IO2 [(IO1 + IO2)/(IO1, max + IO2, max)]
Figure 28. LW010AJ, BK, CL Typical Efficiency vs. Normalized Output Current at TC = 25 C
set)
INPUT VOLTAGE (VI/VI, nom )
0 TIME, t (2 ms/div)
8-1806(C)
NORMALIZED OUTPUT VOLTAGE (VO/VO,
Figure 31. Typical Output Voltage Start-Up when Input Voltage Is Applied; IO = 80% of IO, max, VI = Nominal Line
1.01 1.0 0.99
0.75 0.50
NORMALIZED OUTPUT VOLTAGE; VO/VO, set SINGLE OUTPUTS, VO1/VO1, set DUAL OUTPUTS REMOTE ON/OFF, VON/OFF (V) (2 V/div)
LOAD CURRENT (IO/IO, max )
1.0
TIME, t (100 s/div)
8-1857(C)
0.0
Figure 29. Single-Output Typical Output Voltage for Step Load Change from 50% to 75% of IO = IO, max
set)
4.0 2.0 0
NORMALIZED OUTPUT VOLTAGE(V O/VO,
1.01
TIME, t (1 ms/div)
1.0 0.99 0.50 0.25
8-1807(C).a
LOAD CURRENT (IO/IO, max )
Figure 32. Typical Output Voltage Start-Up when Signal Is applied to Remote On/Off; IO = 80% of IO, max
TIME, t (100 s/div)
8-1856(C)
Figure 30. Single-Output Typical Output Voltage for Step Load Change from 50% to 25% of IO = IO, max Tyco Electronics Corp. 13
LC/LW010- and LC/LW015-Series Power Modules: 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
Data Sheet August 1998
Test Configurations
COPPER STRIP
TO OSCILLOSCOPE CURRENT PROBE VI(+)
VO1(+ )
LTEST 12 H
0.47 F
0.47 F
SCOPE
RLOAD1
BATTERY
CS 220 F IMPEDANCE < 0.1 @ 20 C, 100 kHz
COM
33 F
0.47 F
VI(-)
0.47 F
SCOPE
RLOAD2
VO2(-)
8-203(C) 8-808(C).d
Note: Input reflected-ripple current is measured with a simulated source impedance of 12 H. Capacitor Cs offsets possible battery impedance. Current is measured at the input of the module.
Note: Use four 0.47 F ceramic capacitors. Scope measurement should be made using a BNC socket. Position the load between 50 mm and 75 mm (2 in. and 3 in.) from the module.
Figure 33. Input Reflected-Ripple Test Setup
Figure 36. Peak-to-Peak Output Noise Measurement Test Setup for Dual Outputs
COPPER STRIP VO(+) 0.47 F VO(-) 0.47 F SCOPE RESISTIVE LOAD
CONTACT AND DISTRIBUTION LOSSES VI(+) II SUPPLY VO1 IO COM LOAD LOAD
8-513(C).g
VI(-) CONTACT RESISTANCE
VO2
Note: Use two 0.47 F ceramic capacitors. Scope measurement should be made using a BNC socket. Position the load between 50 mm and 75 mm (2 in. and 3 in.) from the module.
8-863(C).a
Figure 34. Peak-to-Peak Output Noise Measurement Test Setup for Single Outputs
Note: All measurements are taken at the module terminals. When socketing, place Kelvin connections at module terminals to avoid measurement errors due to socket contact resistance. 2
[ VOJ - COM ]IOJ
CONTACT AND DISTRIBUTION LOSSES VI(+) II SUPPLY VI(-) CONTACT RESISTANCE
8-204(C)
-------------------------------------------------- x 100 = J=1 [ VI ( + ) - VI ( - ) ]II
Figure 37. Output Voltage and Efficiency Measurement Test Setup for Dual Outputs
VO(+) IO LOAD
VO(-)
Note: All measurements are taken at the module terminals. When socketing, place Kelvin connections at module terminals to avoid measurement errors due to socket contact resistance.
[ VO(+) - VO(-) ]IO = ----------------------------------------------- x 100 [ VI(+) - VI(-) ]II Figure 35. Output Voltage and Efficiency Measurement Test Setup for Single Outputs 14 Tyco Electronics Corp.
Data Sheet August 1998
LC/LW010- and LC/LW015-Series Power Modules: 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W Current Limit
To provide protection in a fault (output overload) condition, the unit is equipped with internal current-limiting circuitry and can endure current limiting for an unlimited duration. At the point of current-limit inception, the unit shifts from voltage control to current control. If the output voltage is pulled very low during a severe fault, the current-limit circuit can exhibit either foldback or tailout characteristics (output-current decrease or increase). The unit operates normally once the output current is brought back into its specified range.
Design Considerations
Input Source Impedance
The power module should be connected to a low ac-impedance input source. Highly inductive source impedances can affect the stability of the power module. If the source inductance exceeds 4 H, a 33 F electrolytic capacitor (ESR < 0.7 3/4 at 100 kHz) mounted close to the power module helps ensure stability of the unit.
Safety Considerations
For safety-agency approval of the system in which the power module is used, the power module must be installed in compliance with the spacing and separation requirements of the end-use safety agency standard, i.e., UL 1950, CSA 22.2 No. 950-95, EN60950, and IEC950. For the converter output to be considered meeting the requirements of safety extra-low voltage (SELV), one of the following must be true of the dc input:
s
Remote On/Off (Optional)
Two remote on/off options are available. Positive logic, device code suffix "4", remote on/off turns the module on during a logic-high voltage on the remote ON/OFF pin, and off during a logic low. Negative logic, device code suffix "1", remote on/off turns the module off during a logic high and on during a logic low. To turn the power module on and off, the user must supply a switch to control the voltage between the on/off terminal and the VI(-) terminal (Von/off). The switch may be an open collector or equivalent (see Figure 38). A logic low is Von/off = -0.7 V to +1.2 V. The maximum Ion/off during a logic low is 1 mA. The switch should maintain a logic-low voltage while sinking 1 mA. During a logic high, the maximum Von/off generated by the power module is 10 V. The maximum allowable leakage current of the switch at Von/off = 10 V is 50 A. The module has internal capacitance to reduce noise at the ON/OFF pin. Additional capacitance is not generally needed and may degrade the start-up characteristics of the module.
All inputs are SELV and floating, with the output also floating. All inputs are SELV and grounded, with the output also grounded. Any non-SELV input must be provided with reinforced insulation from any other hazardous voltages, including the ac mains, and must have a SELV reliability test performed on it in combination with the converters.
s
s
The power module has extra-low voltage (ELV) outputs when all inputs are ELV. The input to these units is to be provided with a maximum 5 A normal-blow fuse in the ungrounded lead.
VI(+) VI(-)
Feature Descriptions
Output Overvoltage Clamp
The output overvoltage clamp consists of control circuitry, independent of the primary regulation loop, that monitors the voltage on the output terminals. This control loop has a higher voltage set point than the primary loop (see Feature Specifications table). In a fault condition, the overvoltage clamp ensures that the output voltage does not exceed VO, clamp, max. This provides a redundant voltage-control that reduces the risk of output overvoltage. Tyco Electronics Corp.
Von/off
+
Ion/off REMOTE ON/OFF
8-758(C).a
Figure 38. Remote On/Off Implementation
15
LC/LW010- and LC/LW015-Series Power Modules: 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
Data Sheet August 1998
Feature Descriptions (continued)
Output Voltage Adjustment (Optional on Single-Output Units)
Output voltage set-point adjustment allows the user to increase or decrease the output voltage set point of a module. This is accomplished by connecting an external resistor between the TRIM pin and either the VO(+) or VO(-) pins. With an external resistor between the TRIM and VO(+) pins (Radj-down), the output voltage set point (VO, adj) decreases (see Figure 39). The following equation determines the required external resistor value to obtain an output voltage change from VO, nom to VO, adj: Radj-down Lx010, 5A Lx010, 5B Lx010, 5C Lx010, 5D Lx010, 5F
G 5110 10,000 10,000 5110 5110
H 2050 5110 5110 2050 2050
K 2.5 9.5 NA 0.76 0.75
L 2.5 2.5 2.5 1.23 2.5
The combination of the output voltage adjustment and the output voltage tolerance cannot exceed 110% (125% for the D) of the nominal output voltage between the VO(+) and VO(-) terminals.
VI(+)
VO(+)
( VO, adj - L )G = -------------------------------------- - H ( VO, nom - VO, adj )
TRIM RLOAD Radj-up VO(-)
8-715(C).d
where Radj-down is the resistance value connected between TRIM and VO(+), and G, H, and L are defined in the following table.
VI(-)
VI (+)
VO (+) Radj-down TRIM RLOAD
Figure 40. Circuit Configuration to Increase Output Voltage
VI (-) VO(-)
8-715(C).e
Figure 39. Circuit Configuration to Decrease Output Voltage With an external resistor connected between the TRIM and VO(-) pins (Radj-up), the output voltage set point (VO, adj) increases (see Figure 40). The following equation determines the required external resistor value to obtain an output voltage from VO, nom to VO, adj: Radj-up GL = ---------------------------------------- - H [ ( VO, adj - L ) - K ]
The L-Series power modules have a fixed current-limit set point. Therefore, as the output voltage is adjusted down, the available output power is reduced. In addition, the minimum output current is a function of the output voltage. As the output voltage is adjusted down, the minimum required output current can increase (i.e., minimum power is constant).
Synchronization (Optional)
With external circuitry, the unit is capable of synchronization from an independent time base with a switching rate of 256 kHz. Other frequencies may be available; please consult the factory for application guidelines and/or a description of the external circuit needed to use this feature.
where Radj-up is the resistance value connected between TRIM and VO (-), and the values of G, H, K, and L are shown in the following table:
16
Tyco Electronics Corp.
Data Sheet August 1998
LC/LW010- and LC/LW015-Series Power Modules: 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W Heat Transfer Characteristics
Increasing airflow over the module enhances the heat transfer via convection. Figures 43 through 45 show the maximum power that can be dissipated by the module without exceeding the maximum case temperature versus local ambient temperature (TA) for natural convection through 3.0 ms-1 (600 ft./min.). Systems in which these power modules are used typically generate natural convection airflow rates of 0.25 ms-1 (50 ft./min.) due to other heat dissipating components in the system. Therefore, the natural convection condition represents airflow rates of approximately 0.25 ms-1 (50 ft./min.). Use of Figure 43 is shown in the following example. Example What is the minimum airflow necessary for an LW010A operating at 48 V, an output current of 2.0 A, and a maximum ambient temperature of 91 C? Solution:
8-1363(C).b
Thermal Considerations
The power module operates in a variety of thermal environments; however, sufficient cooling should be provided to help ensure reliable operation of the unit. Heat-dissipating components inside the unit are thermally coupled to the case. Heat is removed by conduction, convection, and radiation to the surrounding environment. Proper cooling can be verified by measuring the case temperature. The case temperature (TC) should be measured at the position indicated in Figures 41 and 42.
15.2 (0.6)
10.2 (0.4)
IN + LW010/LC010 dc-dc POWER MODULE OUT +
Note: Dimensions are in millimeters and (inches). Pin locations are for reference only.
Figure 41. LW010 and LC010 Case Temperature Measurement Location
Given: VI = 48 V, IO = 2.0 A (IO, max), TA = 91 C Determine PD (Figure 58): PD = 2.5 W Determine airflow (Figure 43): v = 2.0 ms-1 (400 ft./min.)
3.5
5.1 (0.2) 5.1 (0.2)
UNITS POWER DISSIPATION, PD (W)
MAXIMUM CASE TEMPERATURE 3 2.5 2 1.5 1 0.5 0 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 NATURAL CONVECTION 1.0 ms-1 (200 ft./min.) 2.0 ms-1 (400 ft./min.) 3.0 ms-1 (600 ft./min.)
IN + LW015/LC015 dc-dc POWER MODULE OUT +
8-1363(C).c
Note: Dimensions are in millimeters and (inches). Pin locations are for reference only.
Figure 42. LW015 and LC015 Case Temperature Measurement Location
MAX AMBIENT TEMPERATURE, TA (C)
8-1375(C).a
Note that the views in Figures 41 and 42 are of the surface of the modules. The temperatures at these locations should not exceed the maximum case temperature indicated on the derating curve. The output power of the module should not exceed the rated power for the module as listed in the Ordering Information table.
Figure 43. LW010/LC010 Forced Convection Power Derating; Either Orientation
Tyco Electronics Corp.
17
LC/LW010- and LC/LW015-Series Power Modules: 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
Data Sheet August 1998
Thermal Considerations (continued)
5 UNITS POWER DISSIPATION, PD (W) 4.5 4 3.5 3 2.5 2 1.5 1 0.5 0 0 10 20 30 40 50 60 70 80 90 100 110 120 MAX AMBIENT TEMPERATURE, TA (C)
8-1377(C).a
4.5 4.0
MAXIMUM CASE TEMPERATURE
POWER DISSIPATION, PD (W)
3.5 3.0 VI = 27 V 2.5 2.0 1.5 1.0 0.5 0.0 0.0 0.5 1.0 VI = 20 V VI = 18 V VI = 36 V
NATURAL CONVECTION 1.0 ms-1 (200 ft./min.) 2.0 ms-1 (400 ft./min.) 3.0 ms-1 (600 ft./min.)
1.5
2.0
2.5
3.0
OUTPUT CURRENT, IO (A)
8-1382(C)
Note: The power dissipation of this unit is shown at TC = TC, max because the efficiency of this power module drops at high temperatures.
Figure 44. LC015 Forced Convection Power Derating; Either Orientation
Figure 46. LC015A Power Dissipation at Maximum Case Temperature
5 UNITS POWER DISSIPATION, PD (W) 4.5 4 3.5 3 2.5 2 1.5 1 0.5 0 40 50 60 70 80 90 100 110 NATURAL CONVECTION 1.0 ms-1 (200 ft./min.) 2.0 ms-1 (400 ft./min.) 3.0 ms-1 (600 ft./min.) MAXIMUM CASE TEMPERATURE
POWER DISSIPATION, PD (W) 6 5 4 VI = 36 V VI = 27 V 3 2 1 0 0.00 VI = 18 V
0.16
0.32
0.48
0.64
0.80
max)
0.96
MAX AMBIENT TEMPERATURE, TA (C)
8-1376(C).a
NORMALIZED OUTPUT CURRENT (IO/IO,
8-1808(C)
Figure 45. LW015 Forced Convection Power Derating; Either Orientation
Figure 47. LC015B, C Typical Power Dissipation vs. Normalized Output Current at TC = 25 C
18
Tyco Electronics Corp.
Data Sheet August 1998
LC/LW010- and LC/LW015-Series Power Modules: 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
Thermal Considerations (continued)
4.0 POWER DISSIPATION, P D(W) 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 VI = 18 V VI = 36 V VI = 27 V
POWER DISSIPATION, P D (W)
4.0 3.5 3.0 2.5 VI = 36 V 2.0 1.5 1.0 0.5 0.0 0.0 0.1 0.2 0.3 0.4 0.5 VI = 27 V VI = 18 V
0.6
0.7
0.8
max)
0.9 1.0
NORMALIZED OUTPUT CURRENT (IO/IO,
8-1811(C)
OUTPUT CURRENT, IO (A)
8-1809(C)
Figure 50. LC010A, B, C Typical Power Dissipation vs. Normalized Output Current at TC = 25 C
3.0 2.5 VI = 36 V 2.0 1.5 1.0 0.5 0.0 0.0 0.5 1.0 1.5 2.0 2.5
Figure 48. LC010D, 015D Typical Power Dissipation vs. Output Current at TC = 25 C
POWER DISSIPATION, P D (W)
3.5 POWER DISSIPATION, P D (W) 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0.0 VI = 36 V VI = 27 V VI = 18 V
VI = 27 V VI = 18 V
OUTPUT CURRENT, IO (A)
8-1812(C)
0.5
1.0
1.5
2.0
2.5
3.0
Figure 51. LC010F Typical Power Dissipation vs. Output Current at TC = 25 C
3.5
OUTPUT CURRENT, I O (A)
8-1810(C)
POWER DISSIPATION, P D (W)
Note: The power dissipation of this unit is shown at TC = TC, max because the efficiency of this power module drops at high temperatures.
3.0 2.5 2.0 1.5 1.0 0.5 0.0 0.1 VI = 36 V VI = 24 V VI = 18 V
Figure 49. LC015F Typical Power Dissipation vs. Output Current at Maximum Case Temperature
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
NORMALIZED OUTPUT CURRENT, IO1 = IO2 [(IO1 + IO2)/(IO1, max + IO2, max)]
8-1813(C)
Figure 52. LC010AJ, BK, CL Typical Power Dissipation vs. Normalized Output Current at TC = 25 C Tyco Electronics Corp. 19
LC/LW010- and LC/LW015-Series Power Modules: 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
Data Sheet August 1998
Thermal Considerations (continued)
POWER DISSIPATION, PD (W)
4.5 POWER DISSIPATION, PD (W) 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0.0 0.5 1.0 1.5 VI = 36 V VI = 48 V VI = 60 V VI = 75 V
2.5 2.3 2.1 VI = 75 V 1.9 1.7 1.5 1.3 1.1 0.9 0.7 0.5 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 VI = 48 V VI = 36 V
2.0
2.5
3.0
OUTPUT CURRENT, IO (A)
8-2109(C) 8-1383(C)
OUTPUT CURRENT, IO (A)
Note: The power dissipation of this unit is shown at TC = TC, max because the efficiency of this power module drops at high temperatures.
Figure 56. LW010D9 Typical Power Dissipation vs. Output Current at TC = 25 C with Output Voltage Trimmed Up to 2.5 V
Figure 53. LW015A Power Dissipation at Maximum Case Temperature
4.0
5.0
3.5 POWER DISSIPATION, PD (W) 3.0 2.5 2.0 1.5 1.0 VI = 36 V 0.5 0.0 0.0 VI = 75 V VI = 48 V VI = 60 V
POWER DISSIPATION, PD (W)
4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0.05 0.19 0.33 0.50 VI = 36 V VI = 48 V VI = 60 V VI = 75 V
0.66
0.83
max)
1.00
NORMALIZED OUTPUT CURRENT (IO/IO,
8-1814(C)
0.5
1.0
1.5
2.0
2.5
3.0
Figure 54. LW015B, C Typical Power Dissipation vs. Normalized Output Current at TC = 25 C
3.5
OUTPUT CURRENT, IO (A)
8-1385(C)
Note: The power dissipation of this unit is shown at TC = TC, max because the efficiency of this power module drops at high temperatures.
POWER DISSIPATION, P D (W)
3.0 2.5 2.0 1.5 1.0 0.5 0.0 0.0
VI = 60 V VI = 75 V
Figure 57. LW015F Power Dissipation at Maximum Case Temperature
VI = 36 V VI = 48 V
0.5
1.0
1.5
2.0
2.5
3.0
OUTPUT CURRENT, IO (A)
8-1815(C)
Figure 55. LW010D, LW015D Typical Power Dissipation vs. Output Current at TC = 25 C 20
Tyco Electronics Corp.
Data Sheet August 1998
LC/LW010- and LC/LW015-Series Power Modules: 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W Module Derating
The derating curves in Figures 43 through 45 were determined by measurements obtained in an experimental apparatus shown in Figure 61. Note that the module and the printed-wiring board (PWB) that it is mounted on are both vertically oriented. The passage has a rectangular cross section.
Thermal Considerations (continued)
3.5 POWER DISSIPATION, PD (W) 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0.0 VI = 75 V VI = 60 V
VI = 48 V VI = 36 V 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
FACING PWB
PWB
NORMALIZED OUTPUT CURRENT (IO/IO, max)
8-1380(C)
MODULE
Figure 58. LW010A, B, C Typical Power Dissipation vs. Normalized Output Current at TC = 25 C
AIR VELOCITY AND AMBIENT TEMPERATURE MEASURED BELOW THE MODULE
VI = 60 V VI = 75 V
3.5 POWER DISSIPATION, P D (W) 3.0 2.5 2.0 1.5
AIRFLOW
76 (3.0)
13 (0.5)
1.0 0.5 0.0 0.0 VI = 36 V VI = 48 V
8-1126(C).d
Note: Dimensions are in millimeters and (inches).
2.0 2.5
0.5
1.0
1.5
Figure 61. Experimental Test Setup
OUTPUT CURRENT, IO (A)
8-1816(C)
Layout Considerations
Copper paths must not be routed beneath the power module standoffs.
Figure 59. LW010F Typical Power Dissipation vs. Output Current at TC = 25 C
3.0 POWER DISSIPATION, P D (W) 2.5 2.0 1.5 1.0 0.5 0.0 0.0 0.2 0.4 0.6 0.8 1.0 VI = 36 V VI = 48 V
VI = 75 V VI = 60 V
NORMALIZED OUTPUT CURRENT, IO1 = IO2 [(IO1 + IO2)/(IO1, max + IO2, max)]
8-1817(C)
Figure 60. LW010AJ, BK, CL Typical Power Dissipation vs. Normalized Output Current at TC = 25 C Tyco Electronics Corp.
21
LC/LW010- and LC/LW015-Series Power Modules: 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
Data Sheet August 1998
Outline Diagram
Dimensions are in millimeters and (inches). Tolerance: x.x 0.5 mm (0.020 in.); x.xx 0.38 mm (0.015 in.). If slightly lower height is needed, the four standoffs can be dropped through holes on the user's PWB. By dropping the standoffs through the PWB, the module height will be decreased to 9.5 mm (0.375 in.) typical height. Top View
50.8 (2.00)
25.4 (1.00)
-
IN +
LC015A DC-DC Power Module
IN:DC 18-36V, 1.1A MADE IN USA OUT:DC 5V, 3A
OUT +
Side View
0.51 (0.020) 10.16 (0.400) MAX 5.84 (0.230)* MIN STANDOFF DIAMETER 0.63 (0.025) TYP, 4 PLACES 0.63 (0.025) x 0.63 (0.025) SQUARE PIN, ALL PLACES
Bottom View
7.62 (0.300) 0.32 (0.0125) TYP
4
9.91 (0.39) 5.08 (0.200)
2 1
2.54 (0.100)
12.7 (0.500)
5
24.77 (0.975)
3
15.2 (0.60) 20.32 (0.800) 27.9 (1.10)
6
10.16 (0.400)
7.62 (0.300)
8-1329(C).b
* An optional short pin dimension is 2.8 mm 0.25 mm (0.110 in. 0.010 in.).
Pin 1 2
Function VI(-) VI(+)
Pin 4 5
Function VO(+) or VO1(+) COMMON (dual outputs) or TRIM (optional on single outputs) Pin is not present on single outputs unless option is specified. Pin is always present on dual outputs. VO(-) or VO2(-)
3
ON/OFF or SYNC (optional) Pin is not present unless one of these options is specified.
6
22
Tyco Electronics Corp.
Data Sheet August 1998
LC/LW010- and LC/LW015-Series Power Modules: 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
Recommended Hole Pattern
Component-side footprint. Dimensions are in millimeters and (inches).
CASE OUTLINE
7.62 (0.300) 27.94 (1.10)
STANDOFF
10.16 (0.400)
9.91 (0.39) 7.62 (0.300)
5.08 (0.200) 24.77 20.32 (0.975) (0.800)
25.4 (1.00)
2.54 (0.100) 15.2 (0.60)
20.32 (0.800) 50.8 (2.00)
8-1329(C).b
Ordering Information
Table 6. Device Codes Input Voltage 18 V--36 V 18 V--36 V 18 V--36 V 36 V--75 V 18 V--36 V 18 V--36 V 18 V--36 V 18 V--36 V 18 V--36 V 18 V--36 V 18 V--36 V 18 V--36 V 18 V--36 V 36 V--75 V 36 V--75 V 36 V--75 V 36 V--75 V 36 V-- 75 V 36 V--75 V 36 V--75 V 36 V--75 V 36 V--75 V 36 V--75 V 36 V--75 V 36 V--75 V 36 V--75 V Tyco Electronics Corp. Output Voltage 5V 12 V 15 V 2V 3.3 V 5V 12 V 15 V 2V 3.3 V 5 V 12 V 15 V 5V 12 V 15 V 2V 3.3 V 5V 12 V 15 V 2V 3.3 V 5 V 12 V 15 V Output Power 15 W 15 W 15 W 6W 10 W 10 W 10 W 10 W 4W 8W 15 W 15 W 15 W 15 W 15 W 15 W 6W 10 W 10 W 10 W 10 W 4W 8W 10 W 10 W 10 W Device Code LC015A LC015B LC015C LC015D LC015F LC010A LC010B LC010C LC010D LC010F LC010AJ LC010BK LC010CL LW015A LW015B LW015C LW015D LW015F LW010A LW010B LW010C LW010D LW010F LW010AJ LW010BK LW010CL Comcode 107809550 107983140 TBD TBD 107809543 107747925 107747933 107747941 107747958 107747966 107987083 107809592 TBD 107809527 107935413 107935421 107809501 107809535 107747974 107747982 107747990 107748006 107748014 107935405 107809568 TBD 23
LC/LW010- and LC/LW015-Series Power Modules: 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
Data Sheet August 1998
Ordering Information (continued)
Optional features may be ordered using the device code suffixes shown below. The feature suffixes are listed numerically in descending order. Please contact your Lucent Technologies Account Manager or Application Engineer for pricing and availability of options. Table 7. Option Codes Option Output voltage adjustment Short pin: 2.8 mm 0.25 mm (0.110 in. 0.010 in.) Short pin: 3.7 mm 0.25 mm (0.145 in. 0.010 in.) Positive logic remote on/off Synchronization (cannot be ordered on units with remote on/off) Negative logic remote on/off Device Code Suffix 9 8 6 4 3
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Tyco Electronics Power Systems, Inc. 3000 Skyline Drive, Mesquite, TX 75149, USA +1-800-526-7819 FAX: +1-888-315-5182 (Outside U.S.A.: +1-972-284-2626, FAX: +1-972-284-2900) http://power.tycoelectronics.com
Tyco Electronics Corporation reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information. (c) 2001 Tyco Electronics Corporation, Harrisburg, PA. All International Rights Reserved. Printed in U.S.A.
August 1998 DS98-040EPS (Replaces DS97-027EPS)
Printed on Recycled Paper

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