GALW9V647 BEL | Alldatasheet

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Technical content

Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 • Tel 508-870-9775 • Fax 508-870-9796 • www.belpower.com ©2008 Bel Fuse Inc. Specifications subject to change without notice. 07.08 POWER PRODUCTS SIRIUS DC/DC CONVERTER GALW9V647 48V Input – 9.6VDC – 47A Output Control Functions page 1 GALW9V647 – 1/4 Brick Sirius

Ordering Information

  • 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
  • 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 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 Standard Model Number Input Voltage Output Voltage Max Current GALW9V647* 48V 9.6V 47A * Options: Example Part Number: (All options) GALW9V647 E Part Number Options: Pin Length E = 0.18" Note: Standard unit is positive logic and requires 2000µF of output load capacitance for stability.

©2008 Bel Fuse Inc. Specifications subject to change without notice. 07.08 POWER PRODUCTS SIRIUS DC/DC CONVERTER GALW9V647 48V Input – 9.6VDC – 47A Output Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 • Tel 508-870-9775 • Fax 508-870-9796 • www.belpower.com page 2 Input Specifications Parameter Min Typical Max Units Operating Input Voltage 36 75 VDC Input Current, Low Line 13.5 A Input Capacitance 8 µF Input Hysteresis, Low Line 2 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.) 1. For temperature rise design calculation. Output Specifications Parameter Min Typical Max Units Output Voltage 9.2 9.6 10 V Output Power 450 W Over Voltage Protection, Latching 11.04 11.52 12.48 V Operating Output Current Range 0 47 A Output Current Limit 50 65 A Efficiency, Full Load1 93 %

Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 • Tel 508-870-9775 • Fax 508-870-9796 • www.belpower.com ©2008 Bel Fuse Inc. Specifications subject to change without notice. 07.08 POWER PRODUCTS SIRIUS DC/DC CONVERTER GALW9V647 48V Input – 9.6VDC – 47A Output page 3 General Specifications Operating Temperature -40˚ C to + 100˚ C Storge Temperature -55˚ C + 125˚ C Relative Humidity 10% to 95% RH, Non-condensing Vibration 2 to 9 Hz, 3mm disp., 9 to 200 Hz, 1g Material Flammability UL V-0 Weight TBD MTBF Telcordia (Bellcore) TBD 2. PCB less than 130˚ C.

Features

Parameter Min Typical Max Units Over Temperature Protection, Thermal Sensor, Latching2 125 ˚ C Switching Frequency, Fixed 250 kHz Trim Range 8.64 10.56 V

©2008 Bel Fuse Inc. Specifications subject to change without notice. 07.08 POWER PRODUCTS SIRIUS DC/DC CONVERTER GALW9V647 48V Input – 9.6VDC – 47A Output Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 • Tel 508-870-9775 • Fax 508-870-9796 • www.belpower.com page 4 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. 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 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. 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 non- latching is required, consult factory.
  • An advanced microcontroller reduces parts count while adding features, performance and flexibility in the design. U n d e r V o l t a g e H y s t e r e s i s 1 . 0 3 0 3 4 3 7 I n p u t V o l t a g e ( V ) Output Voltage Normalized 3 63 2 3 3 3 53 1 O v e r V o l t a g e H y s t e r e s i s 1 . 0 7 6 . 5 7 8 . 5 8 0 . 5 I n p u t V o l t a g e ( V ) Output Voltage Normalized 7 9 . 57 7 . 57 8 8 07 97 7

Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 • Tel 508-870-9775 • Fax 508-870-9796 • www.belpower.com ©2008 Bel Fuse Inc. Specifications subject to change without notice. 07.08 POWER PRODUCTS SIRIUS DC/DC CONVERTER GALW9V647 48V Input – 9.6VDC – 47A Output page 5 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 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. CoolConverter™ Trim-down + Out Trim – Out Decrease in Output Voltage (%) 1000 100 0 1 2 3 4 5 6 7 8 9 10 Trim Resistance (kΩ) Trim-down RTRIM-UP = Vo (100+∆%) _ (100+2∆%) RTRIM-DOWN = Trim-up 9.6V Trim-up N/A

©2008 Bel Fuse Inc. Specifications subject to change without notice. 07.08 POWER PRODUCTS SIRIUS DC/DC CONVERTER GALW9V647 48V Input – 9.6VDC – 47A Output Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 • Tel 508-870-9775 • Fax 508-870-9796 • www.belpower.com page 6 Efficiency DataE ffi c i e n c y 9 6 9 5 9 4 9 3 9 2 9 1 9 0 8 9 8 8 8 7 8 6 0 20 50 O u t p u t C u r re nt ( A ) Efficiency (%) 3 6V V in 4 8V V in 7 5V V in 3 01 0 4 0 P o w e r D i s s i p a t i o n 4 0 3 5 3 0 2 5 2 0 1 5 1 0 0 20 30 40 50 O ut pu t C u r re n t ( A ) Power Dissipation (W) 3 6V V in 4 8V V in 7 5 V V in 1 0 S t a r t U p 1 ) V ou t 2 V / d i v 1 0 mS/ d i v 2 ) I ou t 1 0A/ d i v 3 ) E na b l e 5V / d i v C H1 C H2 C H3 V olt a g e R i p p l e 1 ) Vo u t 5 0 m V/ d i v 1µS/ d i v 2 ) Io u t 1 0A/ d if C H2 C H1 T ran s i e n t R e s p o n s e 1 ) V ou t 5 0 0 m V / di v 4 0 0µS /d iv 2 ) I ou t 1 0A /d iv C H2 C H1 L i n e / L o a d R e g u l a t i o n 1 0 . 6 1 0 . 4 1 0 . 2 1 0 . 0 9 . 8 9 . 6 9 . 4 9 . 2 9 . 0 8 . 8 8 . 6 0 10 20 O ut pu t C ur re n t ( A ) Output Voltage (V) 3 6 V V in 4 8V V in 7 5V V in 3 0 4 0 5 0 S et po i n t A cc ura c y 0 . 63 96% L i n e R e g u l a t i o n 0 . 0 2 1 2% L o a d R e g u l a t i o n 0 . 1 63 8 % L i n e & L o a d R e g u l a t i o n 0 . 17 94% Power Dissipation Start Up Voltage Ripple Transient ResponseLine/Load Regulation 1. VOUT 2V 10mS/div 2. IOUT 10A/div 3. Enable 5V/div 1. VOUT 50mV/div 1µS/div 10µF ext cap 20MHz BW 2. IOUT 10A/div 1. VOUT 500mV/div 400µS/div 2. IOUT 10A/div

Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 • Tel 508-870-9775 • Fax 508-870-9796 • www.belpower.com ©2008 Bel Fuse Inc. Specifications subject to change without notice. 07.08 POWER PRODUCTS SIRIUS DC/DC CONVERTER GALW9V647 48V Input – 9.6VDC – 47A Output page 7 Back Bias B a c k B i a s 1 ) V ou t 2 V / di v 1 0 m S / di v 2 ) E na b l e 5V / di v C H1 C H2 O v e r Vo l t a g e P ro t e c t i o n 1 ) Vo u t 2 V/ d i v 4 m S / d i v O v e r- c u rr en t P ro t e c t i o n 1 0 4 7 6 7 O u tpu t Cu r re n t ( A ) Output Voltage (V) 5 75 2 6 2 N o t e : O v e r- c u rr e n t p r o t e c t i o n i s b l i p - m o d e ( a k a h i c c u p ) . 3 6 V V in 4 8V V in 7 5 V V in T h e r m a l D e r a t i n g 5 0 4 5 4 0 3 5 3 0 2 5 2 0 1 5 1 0 0 20 3 0 80 9 0 A mbi e n t T empe r a tu re (°C ) Output Current (A) Le n g t hw is e: 4 0 0 L F M 2 0 0 L F M C ro s s wi se 4 0 0 L F M 2 0 0 L F M 1 0 4 0 7 05 0 6 0 Over Current Protection Note: Over current protection is blip-mode (aka hiccup). Thermal DeratingOver Voltage Protection 1. VOUT 2V/div 4mS/div 1. VOUT 2V/div 10mS/div 2. Enable 5V/div

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 ©2008 Bel Fuse Inc. Specifications subject to change without notice. 07.08 POWER PRODUCTS SIRIUS DC/DC CONVERTER GALW9V647 48V Input – 9.6VDC – 47A Output page 8 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 Pin Configuration – Bottom View Mechanical GALW9V647