SIRIUS 48V Input, 9.6VDC, 47A Output The Sirius is a 450W "stretched" quarter-brick in Galaxy Power's CoolConverter™ line of high-efficiency DC/DC converters. Very Low Common-mode Noise for a Commercial DC/DC Converter Two-stage Input Filter Constant Switching Frequency Single Board Design, Very Low Parts Count "Stretched" quarter-brick 1.45"x4.25"x0.95" including integrated heatsink Two Year Warranty Half-brick The Sirius can be used to replace a bus converter with the added benefit of a regulated output and wide-range telecom input voltage range (36-75V). Control Functions GALW9V647 Features 48V Input 9.6VDC, 47A Output 3-Quarter-brick Patented Power Supply Control and Architecture Microprocessor Controlled Primary-side Enable, Choice of Logic Protection Features High Efficiency 93.5% at 9.6V, 47.0A 94.5% at 9.6V, 23.5A Over Temperature Protection Over Voltage Protection Over Current Protection Over/Under Input Voltage Protection SIP Typical Characteristics Output Setpoint Accuracy: ± 5% Load Regulation: ± 2% Line Regulation: ± 0.2% Regulation over Line, Load, and Temperature: ± 10% Low Output Ripple Output Trim ISO 9001 CERTIFIED ORGANISATION ® Certified to ISO 9001:2000 Part No. 05-GAL-01 Rev. 1.0 – 033105 Galaxy Power Inc. 155 Flanders Road WWW.GALAXYPWR.COM Westborough, MA 01581 Telephone: 508-870-9775 GALW9V647 – 1 Fax: 508-870-9796 e-mail: [email protected] General Specifications VIN = 48VDC, TA@25° C, 300 LFM Airflow, VOUT=9.6V, IOUT = Full Load unless otherwise noted. Available output power depends on ambient temperature and good thermal management. (See application graphs for limits.) Input Characteristics Parameter Min Operating Input Voltage 36 Typ Input Current, Low Line Max Units 75 VDC 13.5 A Input Capacitance 8 µF Input Hysteresis, Low Line 2 VDC Output Characteristics Output Voltage 9.2 9.6 Output Power 11.52 10 V 450 W 12.48 V Over Voltage Protection, Latching 11.04 Operating Output Current Range 0 47 A Output Current Limit 50 65 A Efficiency, Full Load1 93 % Features Overtemperature Protection, Thermal Sensor, Latching2 125 Switching Frequency, Fixed 250 Trim Range 8.64 °C kHz 10.56 V Notes: 1. For temperatre rise design calculation. 2. PCB less than 130° C. General Specifications Operating Temperature –40° C to +100° C Storage Temperature –55° C to +125° C Relative Humidity 10% to 95% RH, Non-condensing Vibration 2 to 9Hz, 3mm disp., 9 to 200Hz, 1g Material Flammability UL V-0 Weight MTBF TBD Telcordia (Bellcore) WWW.GALAXYPWR.COM GALW9V647 – 2 Galaxy Power Inc. TBD 155 Flanders Road Westborough, MA 01581 Telephone: 508-870-9775 Part No. 05-GAL-01 Rev. 1.0 – 033105 Fax: 508-870-9796 e-mail: [email protected] Application Notes CoolConverter™ Galaxy’s proprietary CoolConverter™ provides: • Patented single-stage power conversion architecture, control, and magnetic design allow unprecedented power density and efficiency in an isolated power supply. • An advanced microcontroller reduces parts count while adding features, performance, and flexibility in the design. Protection and Control Undervoltage Hysteresis 6 Output Voltage (V) Valid Input Voltage Range: The converter measures the input voltage and will not allow operation outside of the input voltage specification. As shown by the graphs, hysteresis is added to both the high and low voltage to prevent the converter from turning on and off repeatedly when the voltage is held near either voltage extreme. At low line this assures the maximum input current is not exceeded; at high line this assures the semiconductor devices in the converter are not damaged by excessive voltage stress. 5 4 3 2 1 0 30 ON/OFF Logic Option: 31 32 33 35 34 36 37 Input Voltage (V) Overvoltage Hysteresis 6 Output Voltage (V) The ON/OFF control logic can be either Positive (standard) or Negative to enable the converter. For Negative logic, bring the ON/OFF pin to less than 1.0V with respect to the –INPUT pin to enable the converter. The pull-down must be able to sink 100µA. For Positive logic, bring the ON/OFF pin to greater than 4.0V with respect to the –INPUT pin and be limited to less than 10V. The ON/OFF pin has a builtin pull up resistor of approximately 100kΩ to +5V. 5 4 3 2 1 0 76.5 77 77.5 78 78.5 79 79.5 80 80.5 Input Voltage (V) Part No. 05-GAL-01 Rev. 1.0 – 033105 Galaxy Power Inc. 155 Flanders Road WWW.GALAXYPWR.COM Westborough, MA 01581 Telephone: 508-870-9775 GALW9V647 – 3 Fax: 508-870-9796 e-mail: [email protected] Application Notes Thermal Shutdown: The printed circuit board temperature is measured using a semiconductor sensor. If the maximum rated temperature is exceeded, the converter is latched off. To re-enable the converter requires cycling the ON/ OFF pin or power to the converter. If non-latching is required, consult factory. Control Options: As the behavior of the circuit is determined by firmware in the microcontroller, specific customer requirements such as: • non-latching thermal protection • custom valid input voltage range • controlled delay from initiating an ON/OFF signal for power sequencing can be accomplished with no change to hardware. The standard behavior was chosen based on system design experience but we understand that customers often have their own requirements. Please consult Galaxy Power for your special needs. Trim: To trim the output voltage higher, connect the required trim resistor from the Trim pin to the +Out pin. To trim the output voltage lower, connect the required trim resistor from the Trim pin to the –Out pin. Trim-up: { RTRIM-UP = Vo (100+∆%) – 1.225∆% } (100+2∆%) ∆% 5.11kΩ Trim-down: { 100 ∆% – 2 RTRIM-DOWN= } 5.11kΩ Trim-down 1000 Trim Resistance (kΩ) Output Over Voltage Protection: The output voltage is constantly monitored by the microprocessor with a redundant secondary-side measurement circuit that both shuts down the duty cycle and triggers the microprocessor to shut down. If the output voltage exceeds the over-voltage specification, the microprocessor will latch the converter off. To turn the converter on requires either cycling the ON/OFF pin or power to the converter. This advanced feature prevents the converter from damaging the load if there is a converter failure or application error. If non-latching is required, consult factory. 100 10 0 1 2 3 4 5 6 7 8 9 10 Decrease in Output Voltage (%) Safety: An external input fuse must always be used to meet these safety requirements. External Output Trimming + Out Trim – Out WWW.GALAXYPWR.COM GALW9V647 – 4 Galaxy Power Inc. 155 Flanders Road Westborough, MA 01581 Telephone: 508-870-9775 Part No. 05-GAL-01 Rev. 1.0 – 033105 Fax: 508-870-9796 e-mail: [email protected] GALW9V647 OPERATION Efficiency Power Dissipation 96 40 Power Dissipation (W) Efficiency (%) 95 94 93 92 91 90 89 36V Vin 48V Vin 75V Vin 88 87 35 30 25 20 15 36V Vin 48V Vin 75V Vin 10 5 0 86 0 20 10 30 40 0 50 20 10 Output Current (A) Start Up 40 50 Voltage Ripple CH2 CH2 CH1 CH1 CH3 30 Output Current (A) 1) Vout 50mV/div 1µS/div 2) Iout 10A/dif 1) Vout 2V/div 10mS/div 2) Iout 10A/div 3) Enable 5V/div Line/Load Regulation Transient Response 10.6 Setpoint Accuracy 0.6396% Line Regulation 0.0212% Load Regulation 0.1638% Line & Load Regulation 0.1794% Output Voltage (V) 10.4 CH1 CH2 10.2 10.0 9.8 9.6 9.4 36V Vin 48V Vin 75V Vin 9.2 9.0 8.8 8.6 0 10 20 30 40 50 Output Current (A) 1) Vout 500mV/div 400µS/div 2) Iout 10A/div Part No. 05-GAL-01 Rev. 1.0 – 033105 Galaxy Power Inc. 155 Flanders Road WWW.GALAXYPWR.COM Westborough, MA 01581 Telephone: 508-870-9775 GALW9V647 – 5 Fax: 508-870-9796 e-mail: [email protected] GALW9V647 Operation Back Bias Thermal Derating 50 45 Output Current (A) 40 CH1 CH2 35 30 25 Lengthwise: 400 LFM 200 LFM Crosswise 400 LFM 200 LFM 20 15 10 5 0 0 10 20 30 40 50 60 70 80 90 Ambient Temperature (°C) 1) Vout 2V/div 10mS/div 2) Enable 5V/div Over Voltage Protection Over-current Protection Note: Over-current protection is blip-mode (aka hiccup). Output Voltage (V) 10 8 36V Vin 48V Vin 75V Vin 6 4 2 0 47 52 57 62 67 Output Current (A) WWW.GALAXYPWR.COM GALW9V647 – 6 Galaxy Power Inc. 1) Vout 2V/div 4mS/div 155 Flanders Road Westborough, MA 01581 Telephone: 508-870-9775 Part No. 05-GAL-01 Rev. 1.0 – 033105 Fax: 508-870-9796 e-mail: [email protected] PACKAGE DETAIL Ordering Information Standard Model Number GALW9V647E* Pin Configuration Input Voltage Output Voltage Max Current 48V 9.6V 47A * Options: E = 0.18" pins (± 0.01") Note: Standard unit is positive logic and requires 2000µF of output load capacitance for stability. —Bottom View Pin Function Pin Dia. (in.) 1 + Input 0.040 2 On/Off 0.040 3 – Input 0.040 4 – Output 0.060 5 Trim 0.040 6 + Output 0.060 Galaxy Power Inc. warrants to the original purchaser that the products conform to this data sheet and are free from material and workmanship defects for a period of two (2) years from the date of manufacture, if this product is used within specified conditions. Galaxy Power Inc. 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 products or information. For additional details on this limited warranty consult the factory. Part No. 05-GAL-01 Rev. 1.0 – 033105 Galaxy Power Inc. 155 Flanders Road WWW.GALAXYPWR.COM Westborough, MA 01581 Telephone: 508-870-9775 GALW9V647 – 7 Fax: 508-870-9796 e-mail: [email protected]