DORADO MV DC/DC CONVERTERS POWER PRODUCTS 48V Input – 12VDC – 8A Output GMDW12V08 GMDW12V08 – 1/4 Brick Dorado MV Series • • • • • • • • • Industry standard pinout and footprint High efficiency: 86% at 12V, 8A; 88% at 12V, 4A Low profile Very low common-mode noise for a commercial DC/DC converter Constant switching frequency Remote sense Single board design Optional low profile heat sink for improved thermal performance Header with M3 metal inserts for mechanical connection to PCB Control Functions • • • Microprocessor controlled Primary-side enable, choice of logic Industry standard output trim Typical Characteristics • • • • • Protection Features • • • • Over temperature protection Over voltage protection Over current protection Over/Under input voltage protection Output setpoint accuracy: ± 1% Load regulation: ± 0.2% Line regulation: ± 0.2% Regulation over line, load and temperature: ± 2% Low output ripple Ordering Information Standard Model Number Input Voltage Output Voltage Max Current 48V 12V 8A GMDW12V08* * Options: P = Positive Logic Version; High = On Example Part Number: (All options) M = 0.145" Pins (± .01") S = 0.12" Pins (± .01" Dorado MV Heat Sink Part Numbers R = Heat Sink-Ready L = Low Profile (0.465" height) Typical Thermal Performance Part Number Height Natural Convection Power Dissipation† Forced Convection Thermal Resistance‡ 001 0.25" 5W 5.8˚ C/W 002 0.50" 7W 3.2˚ C/W 003 1.00" 11W 2.0˚ C/W 004 0.13" TBD TBD † @ 60˚ C rise heat sink to ambient ‡ @ 300'/min. GMDW12V08 PS R 0 0 X L Part Number Options: Positive Logic Version Optional Pin Lengths M = 0.145" S = 0.12" Heat Sink-Ready Heat Sink 001 = 0.25" 002 = 0.50" 003 = 1.00" 004 = 0.13" Low Profile ©2006 Bel Fuse Inc. Specifications subject to change without notice. 11.06 Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 • Tel 508-870-9775 • Fax 508-870-9796 • www.belpower.com page 1 POWER PRODUCTS DORADO MV DC/DC CONVERTERS 48V Input – 12VDC – 8A Output GMDW12V08 Input Specifications Parameter Operating Input Voltage Min Typical Max Units 36 48 75 VDC 4 A Input Current Input Capacitance 2 µF Input Hysteresis, Low Line 2 VDC VIN = 48VDC, TA@25˚ C, 300 LFM Airflow, VOUT = 12VDC, 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 Min Max Units 102 %VNOM Voltage Ripple 20 mV RMS Voltage Ripple, 20MHz BW 100 mV P–P 8 A Regulation Over Line, Load & Temperature Current Range Current Limit Inception Typical 98 0 110 125 Output Transient Response, 50% to 75% Load Change, 1A/µsec %IOUT 5 %VOUT Settling Time to ± 1% 400 µS Turn-on Time to 98% Vnom 300 mS Output Overshoot at Turn-on 1 %VOUT 110 %VOUT Trim Range 60 Over Voltage Protection, Non-Latching ©2006 Bel Fuse Inc. 125 %VOUT Specifications subject to change without notice. 11.06 Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 • Tel 508-870-9775 • Fax 508-870-9796 • www.belpower.com page 2 DORADO MV DC/DC CONVERTERS POWER PRODUCTS 48V Input – 12VDC – 8A Output GMDW12V08 Isolation Specifications Parameter Min Isolation Test Voltage, Input/Baseplate/Output (Basic) 2000 VDC 10 MΩ Isolation Resistance Typical Max Units Features Parameter Min Typical Over Temperature Protection, Thermal Sensor, Non-latching1 Switching Frequency, Fixed Max Units 117 ˚C 300 kHz 1. PCB less than 130˚ C. Approvals and Standards General Specifications Operating Temperature Storge Temperature Relative Humidity Vibration Material Flammability Weight -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 30 grams MTBF Telcordia (Bellcore) UL and c-UL Recognized Component, TUV, UL60950, CSA 22.2 No. 950, IEC/EN 60950** EMC Characteristics: Designed to meet emission and immunity requirements per EN55022, CISPR 22, Class B, and CISPR 24. ** An external fuse shall be used to comply with the requirements. 2.0 million hours ©2006 Bel Fuse Inc. Specifications subject to change without notice. 11.06 Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 • Tel 508-870-9775 • Fax 508-870-9796 • www.belpower.com page 3 POWER PRODUCTS DORADO MV DC/DC CONVERTERS 48V Input – 12VDC – 8A Output GMDW12V08 Application Notes CoolConverter™ Bel Power’s Proprietary CoolConverter™ • 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 Over Voltage Hysteresis 1.0 Normalized Output Voltage 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 100µA. 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 100kΩ to +5V. 0 76.5 77 77.5 78 78.5 79 79.5 80 80.5 Input Voltage (V) Under Voltage Hysteresis ©2006 Bel Fuse Inc. Normalized Output Voltage 1.0 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. 0 30 31 32 33 34 35 36 Input Voltage (V) Specifications subject to change without notice. 11.06 Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 • Tel 508-870-9775 • Fax 508-870-9796 • www.belpower.com page 4 37 DORADO MV DC/DC CONVERTERS POWER PRODUCTS 48V Input – 12VDC – 8A Output GMDW12V08 CoolConverter™ Protection and Control Remote Sense The output voltage is regulated at the point where the sense pins connect to the power output pins. Total sense compensation should not exceed 1V. Safety An external input fuse must always be used to meet these safety requirements. Trim-up Rtrim-UP { = 12 (100+∆%) _ 1.225∆% (100+2∆%) ∆% } 5.11kΩ 12.0V Trim-up 10000 Trim Resistance (kΩ) 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. It will then restart every 4 seconds. External Output Trimming 1000 100 0 1 2 3 4 5 6 7 8 9 10 Increase in Output Voltage (%) +Sense Trim Up Trim 10K Trimpot Trim Down –Sense Trim-down Trim To trim the output voltage higher, connect the required trim resistor from the Trim pin to the +Sense pin. To trim the output voltage lower, connect the required trim resistor from the Trim pin to the –Sense pin. See the diagrams at right. Rtrim-DOWN = { 100 _ 2 ∆% } 5.11kΩ Trim-down Trim Resistance (kΩ) 1000 100 10 0 1 2 3 4 5 6 7 8 9 10 Decrease in Output Voltage (%) ©2006 Bel Fuse Inc. Specifications subject to change without notice. 11.06 Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 • Tel 508-870-9775 • Fax 508-870-9796 • www.belpower.com page 5 DORADO MV DC/DC CONVERTERS POWER PRODUCTS 48V Input – 12VDC – 8A Output GMDW12V08 Efficiency Data Power Dissipation Start Up Voltage Ripple 1. VOUT 20mV/div 2µS/div 1. VOUT 5V/div 20mS/div 2. Enable 5V/div Transient Response Line/Load Regulation Output Voltage (V) 12.200 12.160 12.120 12.080 36V Vin 48V Vin 75V Vin 12.040 12.000 0 4 8 Output Current (A) 1. VOUT 200mV/div 1ms/div 2. Enable 100mV/div ©2006 Bel Fuse Inc. Specifications subject to change without notice. 11.06 Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 • Tel 508-870-9775 • Fax 508-870-9796 • www.belpower.com page 6 DORADO MV DC/DC CONVERTERS 48V Input – 12VDC – 8A Output POWER PRODUCTS GMDW12V08 Mechanical GMDW12V08 Pin Configuration – 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 + Sense 0.040 6 Trim 0.040 7 – Sense 0.040 8 – Output 0.060 Notes: 1. Mechanical tolerances x.xxx in. = ± 0.005 in. x.xx in = ± 0.01 in. 2. Pin material: Brass with tin/lead plating over nickel 3. Workmanship: Meets or exceeds IPC-A-610B Class II 4. "A" = 0.040" dia. pins 5. "B" = 0.060" dia. pins 6. Min. screw length for heat sink attachment = 4.5mm + heat sink flange + locking hardware RoHS Compliance Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products. These parts are not however compatible with the higher temperatures associated with lead free solder processes and must be soldered using a reflow profile with a peak temperature of no more than 240˚C. ©2006 Bel Fuse Inc. Specifications subject to change without notice. 11.06 CORPORATE FAR EAST EUROPE Bel Fuse Inc. 206 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com 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 Bel Fuse Europe Ltd. Preston Technology Management Centre Marsh Lane, Suite G7, Preston Lancashire, PR1 8UD, U.K. Tel 44-1772-556601 Fax 44-1772-888366 www.belfuse.com page 7