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| 48V Input - 9.6VDC - 47A Output GALW9V647 - 1/4 Brick Sirius * * * * * * High efficiency: 93.5% at 9.6V, 47A 94.5% at 9.6V, 23.5A 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" x 4.25" x 0.95" including integrated heat sink SIRIUS DC/DC CONVERTER POWER PRODUCTS GALW9V647 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 Control Functions * * * Uses patented power supply control and architecture Microprocessor controlled Primary-side enable, choice of logic Protection Features * * * * Over temperature protection Over voltage protection Over current protection Over/Under input voltage protection Ordering Information Standard Model Number GALW9V647* * Options: E = 0.18" Pins ( .01") Input Voltage 48V Output Voltage 9.6V Max Current 47A Part Number Options: Pin Length E = 0.18" Example Part Number: (All options) GALW9V647 E Note: Standard unit is positive logic and requires 2000F of output load capacitance for stability. (c)2008 Bel Fuse Inc. Specifications subject to change without notice. 07.08 Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 * Tel 508-870-9775 * Fax 508-870-9796 * www.belpower.com page 1 POWER PRODUCTS GALW9V647 SIRIUS DC/DC CONVERTER 48V Input - 9.6VDC - 47A Output Input Specifications Parameter Operating Input Voltage Input Current, Low Line Input Capacitance Input Hysteresis, Low Line 8 2 Min 36 Typical Max 75 13.5 Units VDC A F VDC VIN = 48VDC, TA@25 C, 300 LFM Airflow, VOUT = 9.6VDC, IOUT = Full load unless otherwise noted. Available output power depends on ambient temperature and good thermal management. (See application graphs for limits.) Output Specifications Parameter Output Voltage Output Power Over Voltage Protection, Latching Operating Output Current Range Output Current Limit Efficiency, Full Load1 1. For temperature rise design calculation. 11.04 0 50 93 11.52 Min 9.2 Typical 9.6 Max 10 450 12.48 47 65 Units V W V A A % (c)2008 Bel Fuse Inc. Specifications subject to change without notice. 07.08 Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 * Tel 508-870-9775 * Fax 508-870-9796 * www.belpower.com page 2 48V Input - 9.6VDC - 47A Output SIRIUS DC/DC CONVERTER POWER PRODUCTS GALW9V647 Features Parameter Over Temperature Protection, Thermal Sensor, Latching2 Switching Frequency, Fixed Trim Range 2. PCB less than 130 C. 8.64 250 10.56 Min Typical Max 125 Units C kHz V General Specifications Operating Temperature Storge Temperature Relative Humidity Vibration Material Flammability Weight MTBF Telcordia (Bellcore) -40 C to + 100 C -55 C + 125 C 10% to 95% RH, Non-condensing 2 to 9 Hz, 3mm disp., 9 to 200 Hz, 1g UL V-0 TBD TBD (c)2008 Bel Fuse Inc. Specifications subject to change without notice. 07.08 Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 * Tel 508-870-9775 * Fax 508-870-9796 * www.belpower.com page 3 POWER PRODUCTS GALW9V647 SIRIUS DC/DC CONVERTER 48V Input - 9.6VDC - 47A Output Application Notes CoolConverterTM Bel Power's Proprietary CoolConverterTM * 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 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. ON/OFF Logic Option The ON/OFF control logic can be either Negative (standard) or Positive to enable the converter. For Negative logic, the ON/OFF pin is brought to below 1.0V with respect to the -INPUT pin to enable the converter. The pull-down must be able to sink 100A. For Positive logic, the ON/OFF pin is brought to greater than 4.0V with respect to the -INPUT pin and be limited to less than 10V. To request the Positive logic version, add the suffix (P) to the standard part number. The ON/OFF pin has a built-in pull-up resistor of approximately 100k to +5V. 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 required 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 nonlatching is required, consult factory. Output Voltage Over Voltage Hysteresis 1.0 Output Voltage Normalized 0 76.5 77 77.5 78 78.5 79 79.5 80 80.5 Input Voltage (V) Under Voltage Hysteresis 1.0 Normalized 0 30 31 32 33 34 35 36 37 Input Voltage (V) (c)2008 Bel Fuse Inc. Specifications subject to change without notice. 07.08 Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 * Tel 508-870-9775 * Fax 508-870-9796 * www.belpower.com page 4 48V Input - 9.6VDC - 47A Output SIRIUS DC/DC CONVERTER POWER PRODUCTS GALW9V647 CoolConverterTM Protection and Control 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 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 customers may have their own requirements. Please contact Bel Power for any special needs. Safety An external input fuse must always be used to meet these safety requirements. External Output Trimming Trim-down RTRIM-DOWN = Trim-up RTRIM-UP = { Vo (100+%) 1.225% _ (100+2%) % } 5.11k 9.6V Trim-up N/A + Out Trim { 100 _ 2 % } 5.11k Trim-down 1000 - Out 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 Resistance (k) 100 10 0 1 2 3 4 5 6 7 8 9 10 Decrease in Output Voltage (%) (c)2008 Bel Fuse Inc. Specifications subject to change without notice. 07.08 Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 * Tel 508-870-9775 * Fax 508-870-9796 * www.belpower.com page 5 POWER PRODUCTS GALW9V647 SIRIUS DC/DC CONVERTER 48V Input - 9.6VDC - 47A Output Efficiency Data Efficiency 96 94 93 92 91 90 89 88 87 86 0 10 20 30 40 Power Dissipation Power Dissipation Power Dissipation(W) 35 30 25 20 15 10 5 0 0 10 20 30 95 Efficiency (% ) 36 Vin V 48 Vin V 75 Vin V 40 50 36V Vin 48V Vin 75V Vin 40 50 Output Curr nt (A) e Output Current (A) Start Up Start Up Voltage Ripple Voltage Ripple CH2 CH2 CH3 CH1 CH1 1) Vout 2V/div 10m S/div 2) Iout 10 A/div 3) Enable 5V/div 1. VOUT 2V 10mS/div 2. IOUT 10A/div 3. Enable 5V/div 1. VOUTf 50mV/div 1S/div 2) Iout 10 A/di 10F ext cap 20MHz BW 2. IOUT 10A/div 1) Vout 50mV /div 1 S/div Line/Load Regulation Line/Load Regulation 10.6 10.4 Transient Response Transient Response Output Voltage (V) 10.2 10.0 9.8 9.6 9.4 9.2 9.0 8.8 8.6 0 10 20 Setpoint Accuracy 0.6 % 396 Line Regulation0.0212 % Load Regulation0.16 38% Line & Load Regulation0.1794 % CH1 36V Vin 48 Vin V 75 Vin V 30 40 50 CH2 Output Current (A) 1. VOUT 500mV/div 400S/div 2) Iout 10 A/div 2. IOUT 10A/div 1) Vout 500mV/d 400 iv S/div (c)2008 Bel Fuse Inc. Specifications subject to change without notice. 07.08 Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 * Tel 508-870-9775 * Fax 508-870-9796 * www.belpower.com page 6 48V Input - 9.6VDC - 47A Output SIRIUS DC/DC CONVERTER POWER PRODUCTS GALW9V647 Back Bias Back Bias 10 Over Current Protection Note: Over current protection Protection (aka hiccup). Over-current is blip-mode Note: Over-curent protection is blip-mode (aka hiccup). r Output Voltage (V) CH1 8 6 4 2 0 36V Vin 48 Vin V 75V Vin CH2 47 52 57 62 67 1) Vout 2V/d 10mS/d iv iv 2) Enable 5V/d iv 1. VOUT 2V/div 10mS/div 2. Enable 5V/div Output Curr ent (A) Over Voltage Protection Over Voltage Pr otection 50 45 40 35 30 25 20 15 10 5 0 0 10 Thermal Derating Thermal Derating Output Current (A) Lengthwise: 400LFM 200LFM Crosswise 400LFM 200LFM 20 30 40 50 60 70 80 90 Ambient Tem perature (C) 1) Vout 2V /div 4mS/div 1. VOUT 2V/div 4mS/div (c)2008 Bel Fuse Inc. Specifications subject to change without notice. 07.08 Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 * Tel 508-870-9775 * Fax 508-870-9796 * www.belpower.com page 7 48V Input - 9.6VDC - 47A Output Mechanical GALW9V647 SIRIUS DC/DC CONVERTER POWER PRODUCTS GALW9V647 Pin Configuration - Bottom View Pin 1 2 3 4 5 6 Function + Input On/Off - Input - Output Trim + Output Pin Dia. (In.) 0.040 0.040 0.040 0.060 0.040 0.060 (c)2008 Bel Fuse Inc. Specifications subject to change without notice. 07.08 CORPORATE Bel Fuse Inc. 206 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com FAR EAST Bel Fuse Ltd. 8F / 8 Luk Hop Street San Po Kong Kowloon, Hong Kong Tel 852-2328-5515 Fax 852-2352-3706 www.belfuse.com EUROPE Bel Fuse Europe Ltd. Preston Technology Management Centre Marsh Lane, Suite G7, Preston Lancashire, PR1 8UQ, U.K. Tel 44-1772-556601 Fax 44-1772-888366 www.belfuse.com page 8 |
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