Crane Aerospace & Electronics Power Solutions LCM-120 Line Conditioning Module 28 Volt input – 120 watt Features Powers dc-dc converters requiring 28 Vin Input voltage 12 to 50 VDC • Operating temperature -55° to +125°C • Works through transients of up to 80 V for up to 120 ms • Inhibit function • Synchronization function • Undervoltage lockout MODELS VDC Output LCM-120 description The LCM-120™ line conditioning module is a non-isolated dc-dc converter used to extend the input voltage range of Interpoint’s dc-dc converters. The LCM-120 delivers up to 120 watts of throughput power from a 12 to 50 volt dc source in one of three modes: • 12 to 24 volts input – internal boost converter delivers 24 V • 24 to 36 volts input – input is connected directly to output • 36 to 50 volts input – internal buck converter delivers 36 V The LCM-120 module is protected by internal current limit circuitry which limits current according to input voltage. This feature also allows safe charging of large external capacitors. Because current is sensed between input common and output common there is normally no external connection made between these pins. (Note: If an external connection between input and output common is desired, the resistance of this external connection must be greater than 1 ohm.) The LCM module will work through up to an 80 volt transient for up to 120 milliseconds while holding the output at 36 VDC. Features include an under voltage lockout, an inhibit input, a synchronization input and a power fail flag output. Under voltage lockout prevents start-up for inputs less than 12 volts dc and will shut down the converter for an input of less than 10 volts dc. The inhibit input, when connected to input common, disables the internal converter and opens the output power path while leaving the power fail flag unaffected. Inhibit is normally left open or Crane Aerospace & Electronics Power Solutions – Interpoint Products 10301 Willows Rd. NE, Redmond, WA 98052 +1.425.882.3100 • [email protected] www.craneae.com/interpoint pulled up with a resistor. The sync input allows synchronization of the LCM-120 module’s internal clock to an external pulse source with LSTTL level voltages and a 40% to 60% duty cycle. When unused, the sync should be left unconnected. The power fail flag output is a fully isolated NPN opto-coupler transistor rated to 18 volts dc. It will drive an external LSTTL load low if the LCM-120 module’s input voltage drops below 10 volts dc and will remain active until the module output voltage also drops below 10 volts dc. Low Vin and Heavy Loads Converter Design Features 24 to 36 VDC When the LCM-120 module is operated at 12 volts in and 120 watts output, line loss can become a major concern. The module will output 24 volts at 120 watts. Allowing for efficiency, the input current will be 120 watts / 0.88 / 12 = 11.36 A. If the resistance in the line from the power source to the LCM-120 is 0.05 ohms, the line loss at 12 volts from the power source will be (0.05 • 11.36) = 0.57 volts. The LCM-120 module will see 11.43 volts and will not start up. External Capacitance Interpoint recommends a minimum output capacitance of 330 uF and a total ESR of at least 0.25 ohms to ensure stability of the LCM-120 module’s boost converter. For very low ESR capacitors, an external series resistor (non-inductive) may be used to obtain the minimum total ESR. The maximum recommended capacitance is 1 F. Page 1 of 7 LCM-120 Rev AA - 2013.06.14 Crane Aerospace & Electronics Power Solutions LCM-120 Line Conditioning Module 28 Volt input – 120 watt 10 TO 50 VDC 6F – PWM CONTROLLER 6F 6F + 6F RTN 0.01 Ω EMI FILTER LCM-120 +24 TO +36 VDC ENERGY STORAGE FOR HOLDUP IF REQUIRED CH MTR 28XXX MSA 28XXX (25W) (5W) RTN DISTRIBUTED POWER TO SYSTEM INTERFACE Figure 1: System Block Diagram BUCK TRANSIENT ~ ~ +24 +36 +50 ~ ~ +10 +12 BUCK NO CONTROL +24 BOOST VOUT ( Volts) +36 VIN (Volts) Figure 2: Output Voltage www.craneae.com/interpoint Page 2 of 7 LCM-120 Rev AA - 2013.06.14 +80 / 120 ms, Crane Aerospace & Electronics Power Solutions LCM-120 Line Conditioning Module 28 Volt input – 120 watt Pin Out Pin LCM-120 1 Positive Input 2 Positive Input 3 Input Common 4 Input Common 5 Output Common 6 Positive Output 7 No Connection 8 No Connection 9 Power Fail Flag Return 10 Power Fail Flag Output 11 Inhibit 12 Sync model numbering key Base Model LCM – 120 / ES Output Power Screening (Standard screening has no designator in this position.) Note: There is only one LCM-120 model. Figure 4: Model Numbering Key Table 1: Output Voltage model Number Options To determine the model number enter one Angled corner indicates pin one. 1 option from each category in the form below. 12 2 Category Base Model Options LCM-120 Fill in for Model # __________ LCM-120 Screening 1 11 TOP VIEW LCM-120 (Pin side, marked side) 3 4 10 9 5 8 6 7 See “Figure 5: Case U” on page 6 for dimensions. Figure 3: Pin Out Inhibit Sync Leave unconnected Table 2: Pins Not in Use www.craneae.com/interpoint / Table 3: Model Number Options Leave unconnected Leave unconnected ES Notes: 1. Screening: For standard screening leave the screening option blank. For other screening options, insert the desired screening level. For more information see “Table 6: Environmental Screening” on page 7. Pins not in Use “No Connection” pin (standard, leave blank) Page 3 of 7 LCM-120 Rev AA - 2013.06.14 Crane Aerospace & Electronics Power Solutions LCM-120 Line Conditioning Module 28 Volt input – 120 watt Table 4: Operating Conditions 25°C case, 28 VDC Vin, unless otherwise specified. MOdels Head Parameter Lead Soldering Temperature Conditions 1 10 seconds max. STORAGE TEMPERATURE 1 CASE OPERATING TEMPERATURE 1 DERATING OUTPUT POWER/CURRENT 1 ISOLATION, ANY PIN TO CASE Except case pin CONVERSION FREQUENCY SYNCHRONIZATION MIN 1 — 300 °C — +150 °C -55 — +125 ABSOLUTE -55 — +135 LINEARLY Do not apply a voltage to the inhibit pin °C From 100% at 125°C to 0% at 135°C @ 500 VDC at 25°C 100 — — Megohms — 600 — kHz INPUT FREQUENCY 550 — 600 kHz DUTY CYCLE 40 — 60 % FREE RUN -55° TO +125°C ACTIVE LOW — — 0.8 ACTIVE HIGH 4.5 — – inhibit pin pulled low VDC Input Common 1 Leave unconnected — REFERENCED TO OPEN PIN VOLTAGE 1 Page 4 of 7 LCM-120 Rev AA - 2013.06.14 — 1.3 VDC INPUT COMMON OPEN COLLECTOR OR UNCONNECTED INHIBIT PIN CONDITION Notes 1. Guaranteed by design. Not an in-line test. www.craneae.com/interpoint UNITS — FULL POWER IF NOT USED INHIBIT ACTIVE HIGH (OUTPUT ENABLED) Do not apply a voltage to the inhibit pin MAX -65 REFERENCED TO INHIBIT ACTIVE LOW (OUTPUT DISABLED) TYP — 10 — V Crane Aerospace & Electronics Power Solutions LCM-120 Line Conditioning Module 28 Volt input – 120 watt Table 5: Electrical Characteristics: 25°C case, 28 VDC Vin, 100% load, free run, unless otherwise specified. Line conditioning MODULE PARAMETER input voltage CONDITIONS OUTPUT VOLTAGE CONTINUOUS OUTPUT POWER OUTPUT RIPPLE 1 FULL LOAD BW = 10 kHz to 2 MHz INPUT VOLTAGE NO LOAD 36 to 50 35 50 to 80 — 12 to 50 12 to 24 1 1 POWER FAIL THRESHOLD (V) UNDERVOLTAGE LOCKOUT 1 OUTPUT CAPACITOR 1 INHIBITED, PIN 11 = 0 V VOUT > 10, PIN 6 FLAG CURRENT = 0.4 mA 24.5 36 37.5 36 — — — 120 — 150 — VDC W — 50 — 1500 — 12 28 50 VDC — — 80 V 24 1 — 125 180 — 65 85 36 1 — 20 — 12 — 50 — 24 — 24 — 36 — 18 — — 150 — 12 — 88 — 24 — 95 — mV p-p mA mA p-p % 36 — 90 — 12 to 80 — 1 — mA < 9.5 — 0.4, pin 10 — VDC VIN FALLING VIN RISING ESR > 0.25 OHMS Notes 1. Guaranteed by design. Not an in-line test. www.craneae.com/interpoint 24 VOUT = VIN - 1 V UNITS — FULL LOAD FULL LOAD MAX 24 to 36 BW = 10 kHz to 10 MHz EFFICIENCY 1 TYP 36 to 50 12 PIN 11 = 0 V POWER FAIL FLAG THRESHOLD 23 TRANSIENT 120 ms 1 INHIBITED 1 INHIBIT Pin CURRENT 1 12 to 24 CONTINUOUS INPUT CURRENT INPUT Ripple MIN 24 to 36 TRANSIENT 120 ms 1 1 lcm-120 as a condition Page 5 of 7 LCM-120 Rev AA - 2013.06.14 — 9.5 10 VDC — 11.5 12 VDC 330 — 1,000,000 µF Crane Aerospace & Electronics Power Solutions LCM-120 Line Conditioning Module Cases 28 Volt input – 120 watt TOP VIEW CASE U* Flanged case, short-leaded *Does not require designator in Case Option position of model number. 1.505 (38.23) max. 2 11 0.850 (21.59) 3 10 0.650 (16.51) 4 9 0.450 (11.43) 5 8 0.250 (6.35) 6 7 2.750 (69.85) 0.000 0.120 (3.05) 0.000 Weight: 95 grams maximum Case dimensions in inches (mm) Tolerance ±0.005 (0.13) for three decimal places ±0.01 (0.3) for two decimal places unless otherwise specified CAUTION Heat from reflow or wave soldering may damage the device. Solder pins individually with heat application not exceeding 300°C for 10 seconds per pin. Materials Header Cold Rolled Steel/Nickel/Gold Cover Kovar/Nickel Pins #52 alloy/Gold ceramic seal Gold plating of 50 - 150 microinches is included in pin diameter Seal Hole: 0.120 ±0.002 (3.05 ±0.05) Case U, Rev H, 2013.06.04 Please refer to the numerical dimensions for accuracy. Figure 5: Case U www.craneae.com/interpoint Page 6 of 7 LCM-120 Rev AA - 2013.06.14 0.220 (5.59 1.050 (26.67) 0.040 dia (1.02) 12 0.050 (1.27) 0.000 1 0.120 (3.05) 0.250 (6.35) 1.250 (31.75) 2.880 (73.15) 3.005 (76.33) max. 1.380 (35.05) Seam Seal 0.128 dia (3.25). 0.23 (5.8) Pin Length 0.400 (10.16) max. Angled corner indicates pin one. Crane Aerospace & Electronics Power Solutions LCM-120 Line Conditioning Module 28 Volt input – 120 Watt STANDARD AND /ES (NON-QML) ENVIRONMENTAL SCREENING 1, 2 NON-QML TEST PERFORMED pre-cap inspection Method 2017, 2032 STANDARD /ES n n temperature cycle (10 times) Method 1010, Cond. B, -55°C to +125°C, ambient n constant acceleration Method 2001, 500 g n burn-in Method 1015 3 96 hours n Final electrical test MiL-prF-38534, group a Subgroups 1 and 4: +25°C case n n Hermeticity test Fine Leak, Method 1014, Cond. A n gross Leak, Method 1014, Cond. C n gross Leak, Dip n Final visual inspection Method 2009 n n Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. Notes: 1. “Non-QML” Refers to products that do not offer QML screening. 2. Standard and /ES, non-QML products, may not meet all of the requirements of MIL-PRF-38534. 3. Burn-in temperature designed to bring the case temperature to the maximum case temperature of the product. Refer to the specific product information for the maximum case temperature. Burn-in is a powered test. TABLE 7: ENVIRONMENTAL SCREENING–HIGH RELIABILITY STANDARD AND /ES, NON-QML Table 6: Environmental Screening LCM-120 Rev AA - 2013.06.14 This revision supersedes all previous releases. All technical information is believed to be accurate, but no responsibility is assumed for errors or omissions. Crane Electronics, Inc reserves the right to make changes in products or specifications without notice. Interpoint and LCM-120 are trademarks of Crane Electronics, Inc. Copyright © 1999-2013 Crane Electronics, Inc. All rights reserved. www.craneae.com/interpoint Page 7 of 7