50 to 75 Watt 2.28x2.40 Inch Package M o Efficiency to 86% o 300 kHz Switching Frequency o 2:1 Input Range o Regulated Single Output o Continuous Short Circuit Protection o Half Brick Size Meet Industrial Standard MODEL NUMBER INPUT VOLTAGE OUTPUT VOLTAGE 75MRS12W2.5LC 2.5 VDC 75MRS12W3.3LC 3.3 VDC 75MRS12W5LC OUTPUT CURRENT 5 VDC 12 VDC 6.25 A 75MRS12W15LC 15 VDC 5A 75MRS12W24LC 24 VDC 3.13 A 75MRS24W2.5LC 2.5 VDC 75MRS24W3.3LC 3.3 VDC 75MRS24W5LC 5.290 mA 78 7.715 mA 81 84 84 15 A 2.029 mA 77 2.610 mA 79 3.810 mA 82 3.675 mA 85 3.640 mA 86 1.015 mA 77 1.305 mA 79 1.883 mA 83 1.838 mA 85 1.820 mA 86 50 mA 75MRS24W12LC 12 VDC 6.25 A 75MRS24W15LC 15 VDC 5A 75MRS24W24LC 24 VDC 3.13 A 75MRS48W2.5LC 2.5 VDC 75MRS48W3.3LC 3.3 VDC 75MRS48W5LC 15 A 5 VDC 36-75 VDC 50 mA 75MRS48W12LC 12 VDC 6.25 A 75MRS48W15LC 15 VDC 5A 75MRS48W24LC 24 VDC 3.13 A OUTPUT VOLTAGE OUTPUT CURRENT V1 V2 5 VDC 2.5 VDC 5 VDC 3.3 VDC 36-75 VDC 100 76 84 5 VDC 75MRD48W5/2.5LC 4.110 mA 7.440 mA 18-36 VDC INPUT VOLTAGE FULL LOAD 50 mA 75MRS12W12LC 75MRD48W5/3.3LC %EFF NO LOAD 15 A 9-18 VDC MODEL NUMBER INPUT CURRENT INPUT CURRENT %EFF MIN. 1/2 MAX. 1/2 NO LOAD FULL LOAD 1/0 A 15/15 A 30 mA 1.860 mA 84 S P E C I F I C AT I O N S All Specifications Typical At Nominal Line, Full Load, and 25C Unless Otherwise Noted INPUT SPECIFICATIONS GENERAL SPECIFICATION Input Voltage Range 2:1 8.8 V 8V 17 V 16 V 34 V 32.5 V 12 Vin power up 12 Vin power down 24 Vin power up 24 Vin power down 48 Vin power up 48 Vin power down Undervoltage lockout Positiv Logic Remote ON/OFF3) Efficiency see table Input/Output Input/Case Output/Case Isolation Voltage Isolation Resistance 10 MOhms min. 12/24 Vin 48 Vin Switching Frequency For Negative Logic Remote ON/OFF please add Suffix "R" Input Filter Pi Type OUTPUT SPECIFICATIONS Transient Response 400kHz typ. 300kHz typ. Operating Case Temperature Range -40C to +100C Storage Temperature Range -55C to +105C Thermal Shut down, Case Temp. Voltage Accuracy 1.500 VDC min. 1.500 VDC min. 1.500 VDC min. +100C typ. 1% max. 25% Step Load Change External Trim Adj. Range Ripple and Noise, 20 MHz BW <500 sec. 10% 2.5V/3.3V/5V 20mV RMS max. 75mV p-p max. 12V/15V 30mV RMS max. 100mV p-p max. 24V 100mV RMS max. 240mV p-p max. Temperature Coefficient 0.03%/C Short Circuit Protection Continuous Line Regulation 1) 0.2% max. Load Regulation 0.2% max. 2) Over Voltage Protection trip Range, % Vo nom. Current Limit Case Material Aluminium 2.28x2.40x0.5 Inches (57.9x61.0x12.7 mm) Dimensions 115-140% 110% ~ 140% Nominal Output Measured from High Line to Low Line 2) Measured from Full Load to Zero Load 3) Logic Compatibility ... Open Collector ref to -Input Module ON ... Open Circuit Module OFF ... <0.8 VDC 1) Case "M" PIN CONNECTIONS 1 +INPUT 2 REMOTE CONTROL 3 CASE 4 -INPUT 5 -OUTPUT 6 -SENSE 7 TRIM 8 +SENSE 9 +OUTPUT M + R Multitronik GmbH Kaninchenbergweg 78 * 23564 Lubeck * Germany Tel. (+49) 0451 / 60 99 50 * Fax (+49) 0451 / 60 46 95 www.multitronik.com info@multitronik.com vertrieb@mrmultitronik.de 101 Remote ON/OFF Control The 50MRS/75MRS allows the user to switch the module on and off electronically by remote on/off feature. The 50MRS/ 75MRS are available in "positive logic" or "negative logic" (option) versions for remote on/off. Logic State (PIN2) Negative Logic Positive Logic Logic LowSwitch Closed Module on Module off Logic HighSwitch Open Module off Module on External Output Trimming Output may optionally be externally trimmed (10%) with a fixed resistor or an external trimpot as shown. External Output Output Noise The output noise is measured with 10F tantalum capacitor and 1.0F ceramic capacitor across output. All Specifications Typical At Nominal Line, Full Load and 25C Unless Otherwise Noted. 102 Application Note Derating The operating case temperature range of 50MRS... series is -40C to +100C. When operating the 50MRS..., proper derating or cooling is needed. The following curve is the derating curve of 50MRS... without heat sink. Forced Convection Power Derating with No Heat Sink The operating case temperature range of 75MRS... series is -40C to +100C. When operating the 75MRS..., proper derating or cooling is needed. The following curve is the derating curve of 75MRS... without heat sink Forced Convection Power Derating with No Heat Sink Where: The power dissipation (Pd): PD = Pi - Po = Po (1- ) / The thermal resistance are list below: Chart of Thermal Resistance vs Air Flow: The temperature rise (T): AIR FLOW RATE TYPICAL Rca Natural Convection 7.12C/W 100 ft./min. 6.21C/W 200 ft./min. 5.17C/W 300 ft./min. 4.29C/W 400 ft./min. 3.64C/W T = Pd * Rca 103