High Density DC-DC Modules www.powersolve.co.uk PS50 Series 25 to 50 Watt Wide Input DC-DC Converters Single Output Features • 25W/50W Isolated Output • Efficiency to 85% • 300KHz Switching Frequency • 2 : 1 Input Range • Regulated Outputs • Continuous Short Circuit Protection • Five-Sided Metal Case Only for Nominal Input Voltage 24 & 48 VDC MODEL INPUT VOLTAGE OUTPUT VOLTAGE OUTPUT CURRENT INPUT CURRENT NO LOAD FULL LOAD %EFF PS50-12S25 2.5 VDC 10 A 2740 mA 76 PS50-12S33 3.3 VDC 10 A 3525 mA 78 PS50-12S05 5 VDC 10 A 5145 mA 81 PS50-12S12 12 VDC 4.16 A 4950 mA 84 PS50-12S15 15 VDC 3.33 A 4950 mA 84 PS50-12S24 24 VDC 2.08 A 4950 mA 84 PS50-24S25 2.5 VDC 10 A 1353 mA 77 PS50-24S33 3.3 VDC 10 A 1740 mA 79 PS50-24S05 9-18VDC 50 mA 5 VDC 10 A 2540 mA 82 PS50-24S12 12 VDC 4.16 A 2450 mA 85 PS50-24S15 15 VDC 3.33 A 2450 mA 85 PS50-24S24 24 VDC 2.08 A 2419 mA 86 PS50-48S25 2.5 VDC 10 A 676 mA 77 PS50-48S33 3.3 VDC 10 A 870 mA 79 PS50-48S05 5 VDC 10 A 1250 mA 83 PS50-48S12 12 VDC 4.16 A 1220 mA 85 PS50-48S15 15 VDC 3.33 A 1220 mA 85 PS50-48S24 24 VDC 2.08 A 1209 mA 86 18-36VDC 36-75VDC 50 mA 50 mA NOTE: 1. Nominal Input Voltage 12, 24 & 48 VDC 1 Powersolve Electronics Ltd, Units 8, 9 and 12 The Paddock, Hambridge Road, Newbury, Berks RG14 5TQ Tel: 01635 521858 Fax: 01635 523771 Email: [email protected] High Density DC-DC Modules www.powersolve.co.uk Electrical Specification INPUT Input Voltage Range 12V 24V 48V 12Vin power up power down 24Vin power up power down 48Vin power up power down Undervoltage lockout Positive Logic Remote ON/OFF3.4 Input Filter OUTPUT Voltage Accuracy : Transient Response : 25% Step Load Change External Trim Adj. Range Ripple & Noise, 20MHz BW, 9-18V 18-36V 36-75V 8.8V 8V 17V 16V 34V 32.5V Pi Type +1% max. <500μsec. +10% 20mV RMS., max. 75mV pk-pk, max. 30mV RMS., max. 100mV pk-pk, max. 100mV RMS., max. 240mV pk-pk, max. 2.5V & 3.3V & 5V 12V & 15V 24V ENVIRONMENTAL Temperature Coefficient Short Circuit Protection Line Regulation1 Load Regulation2 Over Voltage Protection trip Range, % Vo nom. Current Limit GENERAL Efficiency Isolation Voltage +0.03%/°C Continuous +0.2% max. +0.2% max. 115-140% 110% ~150% Nominal Output See Table 1500VDC min. 1500VDC min. 1500VDC min. 107ohm min. 400KHz, Typ. 300KHz, Typ. -40°C to 100°C -55°C to +105°C 100°C Typ. 2.28x2.40x0.50 inches (57.9x61.0x12.7 mm) Aluminium Input/Output Input/Case Output/Case Isolation Resistance Switching Frequency 12/24Vin 48Vin Operating case Temperature Storage Temperature Thermal Shutdown, Case Temp. Dimensions Case Material NOTE: 1. 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 - < 0.8Vdc 4. Suffix "N" to the Model Number with Negative Logic Remote ON/OFF. All Dimensions In Inches(mm) Tolerances Inches Millimeters .XX +.02 .X+.5 Mounting Inserts M3*0.5 Through 4pl. .XXX+.01 .XX+.25 Pin +0.02 +0.5 0.18 min. (4.60 ) BOTTOM VIEW +SENSE (8) +SENSE (8) 2*R1.50 TRIM DOWN TRIM (7) TRIM (7) 1.40 (35.56) 2.00 (50.80) 4 5 3 6 0.60 (15.24) 7 2.40 (61.00) 8 2 TRIM UP Ø0.08 (2.03) 2pl. -SENSE (6) Ø0.04 (1.02) 7pl. 9 1 Pin Connection External Output Trim -SENSE (6) 10K ohms TRIMPOT Pin 1 2 3 4 5 6 7 8 9 Function +Vin ON/OFF CASE -Vin -Vout -Sense Trim +Sense +Vout 1.90 (48.25) 2.28 (57.90) 0.50 (12.70) SIDE VIEW Remote ON/OFF Control +SENSE (8) ON/OFF (2) TRIM DOWN TRIM (7) HIGH SIGNAL HERE DISABLE OUTPUT TRIM UP -VIN (4) -SENSE (6) All Specifications Typical At Nominal Line, Full Load and 25°C Unless Otherwise Noted. Powersolve Electronics Ltd, Units 8, 9 and 12 The Paddock, Hambridge Road, Newbury, Berks RG14 5TQ Tel: 01635 521858 Fax: 01635 523771 Email: [email protected] 2 High Density DC-DC Modules www.powersolve.co.uk Application Note Derating: The operating case temperature range of the PS50 series is -40°C to +100°C. When operating the PS50 series, proper derating or cooling is needed. The following curve is the derating curve of a PS50 without heat sink. Power Dissipated vs Ambient Temperature and Air Flow 50 Natural Convection 20 ft./min. (0.1 m/s) 45 100 ft./min. (0.5 m/s) Power Disspated, Pd (Watts) 40 35 200 ft./min. (1.0 m/s) 30 300 ft./min. ( 1.5 m/s) 25 400 ft./min. (2.0 m/s) 20 500 ft./min. (2.5 m/s) 15 10 600 ft./min. (3.0 m/s) 5 700 ft./min. (3.5 m/s) 0 800 ft./min. (4.0 m/s) 0 10 20 30 40 50 60 70 80 90 100 Ambient Temperature, Ta(Deg. C) Forced Convection Power Derating without Heat Sink Where: The power dissipation (Pd): Pd = Pi - Po = Po (1-n) /n The thermal resistance are listed below: Chart of Thermal Resistance vs Air Flow: AIR FLOW RATE Natural Convection 20ft./min. (0.1m/s) 100 ft./min. (0.5m/s) 200 ft./min. (1.0m/s) 300 ft./min. (1.5m/s) 400 ft./min. (2.0m/s) 500 ft./min. (2.5m/s) 600 ft./min. (3.0m/s) 700 ft./min. (3.5m/s) 800 ft./min. (4.0m/s) The temperature rise ( TYPICAL Rca 7.12 °C/W 6.21 °C/W 5.17 °C/W 4.29 °C/W 3.64 °C/W 2.96 °C/W 2.53 °C/W 2.37 °C/W 2.19 °C/W T ): T = Pd * Rca 3 Powersolve Electronics Ltd, Units 8, 9 and 12 The Paddock, Hambridge Road, Newbury, Berks RG14 5TQ Tel: 01635 521858 Fax: 01635 523771 Email: [email protected] High Density DC-DC Modules www.powersolve.co.uk Remote ON/OFF Control The PS50 series allows the user to switch the module on and off electronically with remote on/off feature. The PS50 series are available with "positive logic" or "negative logic" (option). Logic Table ON/OFF (2) Logic State (Pin 2) Logic Low Switch Closed HIGH SIGNAL HERE DISABLE OUTPUT -VIN (4) Logic High Switch Open Negative Logic Positive Logic Module on Module off Module off Module on External Output Trimming Output may optionally be externally trimmed (+10%) with a fixed resistor or an external trimpot as shown. +SENSE (8) +SENSE (8) TRIM DOWN 10K ohms TRIMPOT TRIM (7) TRIM (7) TRIM UP -SENSE (6) -SENSE (6) External Output Output Noise The output noise is measured with 10μF tantalum capacitor and 1.0μF ceramic capacitor across output. +Vout (9) Ceramic 1.0µF Resistor Load Solid Tantalum 10µF To Scope -Vout (5) Output Noise Test Circuit schematic All Specifications Typical At Nominal Line, Full Load and 25°C Unless Otherwise Noted. Powersolve Electronics Ltd, Units 8, 9 and 12 The Paddock, Hambridge Road, Newbury, Berks RG14 5TQ Tel: 01635 521858 Fax: 01635 523771 Email: [email protected] 4