GAQW2V540 GALAXY | Alldatasheet

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Technical content

Galaxy Power Inc. 155 Flanders Road Westborough, MA 01581 Telephone: 508-870-9775 Fax: 508-870-9796 e-mail: info@galaxypwr.com The Aquarius Series is the highest power eighth-brick DC/DC converter in the industry. Industry Standard Pinout and Footprint No Heat Sink Required Very Low Common-mode Noise for a Commercial DC/DC Converter Two-stage Input Filter Constant Switching Frequency Remote Sense Single Board Design Very Low Parts Count Two Year Warranty Control Functions Uses Patented Power Supply Control and Architecture Microprocessor Controlled Primary-side Enable, Choice of Logic Protection Features Over T emperature Protection Over Voltage Protection Over Current Protection Over/Under Input Voltage Protection Typical Characteristics Output Setpoint Accuracy: ± 1% Load Regulation: ± 0.2% Line Regulation: ± 0.2% Regulation over Line, Load, and Temperature: ± 2% Low Output Ripple Output T rim Aquarius 48V Input, 2.5VDC, 40A Output The Aquarius Series of eighth- brick DC/DC converters in Galaxy's CoolConverter™ line provides both exceptional performance and high density. GAQW2V540 Features: 48V Input 2.5VDC, 40A Output High Efficiency: 89% at 2.5V, 40A 90% at 2.5V, 20A ISO 9001 CERTIFIED ORGANISATION Certified to ISO 9001:2000 Eighth-brickEighth-brickEighth-brick Quarter-brickQuarter-brick Half-brickHalf-brick SIPSIP 3-Quarter-brick3-Quarter-brick

Galaxy Power Inc. 155 Flanders Road Westborough, MA 01581 Telephone: 508-870-9775 Fax: 508-870-9796 e-mail: info@galaxypwr.com General Specifications VIN = 48VDC, TA@25° C, 300 LFM Airflow, VOUT=2.5VDC, 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 Typ Max Units Operating Input Voltage 36 48 75 V DC Input Current 3.75 A Input Capacitance 3 µF Input Hysteresis, Low Line 2 V DC Output Characteristics Regulation Over Line, Load & T emperature 2.450 2.550 V Voltage Ripple 20 mV RMS Voltage Ripple, 20MHz BW 75 mV P–P Current Range 0 40 A Current Limit Inception 41.2 56 A Short Circuit Current, Peak1 60 A Output T ransient Response, 50% to 75% load change, 1A/µsec2 16 %V OUT Settling Time to ± 1% 200 µS Turn-on Time to 98%Vnom 25 mS Output Overshoot at T urn-on 0 %V OUT Trim Range 70 110 %V OUT Overvoltage Protection, Latching 130 %V OUT Isolation Isolation T est Voltage, Input/Output (Basic) 2250 V DC Isolation Resistance 10 M Ω

Features

Overtemperature Protection, Thermal Sensor, Latching3 110 ° C Switching Frequency, Fixed 250 kHz Notes: 1. During short circuit, converter will shut down and attempt to restart once per second. The average current during this condition will be very low and the device can be safely left in this condition continuously. 2. Limited by output energy storage. For improved performance see T uned (T) model information. 3. PCB less than 130° C General Specifications Operating T emperature –40 ° C to +100° C Storage T emperature –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 27 grams MTBF T elcordia (Bellcore) 2.2 million hours Approvals and Standards 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.

Galaxy Power Inc. 155 Flanders Road Westborough, MA 01581 Telephone: 508-870-9775 Fax: 508-870-9796 e-mail: info@galaxypwr.com CoolConverter™ Galaxy’s proprietary CoolConverter™ provides:

  • P atented 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.
  • L ow common-mode noise as a result of lower capacitance in the transformer from balanced winding 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 semicon- ductor 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. T o request the Positive logic version, add the suffix (P) to the stan- dard part number. The ON/OFF pin has a built-in pull up resistor of approximately 100kΩ to +5V. Application Notes Overvoltage Hysteresis 1.0 76.5 78.5 80.5 Input Voltage (V) Output Voltage Normalized 79.577.5 78 80 7977 Undervoltage Hysteresis 1.0 30 34 37 Input Voltage (V) Output Voltage Normalized 3632 33 3531

Galaxy Power Inc. 155 Flanders Road Westborough, MA 01581 Telephone: 508-870-9775 Fax: 508-870-9796 e-mail: info@galaxypwr.com 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 specifi- cation, 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 ad- vanced feature prevents the converter from damaging the load if there is a converter failure or application error. If non-latching is required, consult factory. 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. 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 0.4V or 10% of Vout, whichever is greater. Safety: An external input fuse must always be used to meet these safety requirements. External Output T rimming Application Notes +Sense Trim –Sense Trim Up Trim Down 10KΩ Trimpot Trim-up Trim-down { } Trim: To trim the output voltage higher, connect the required trim resistor from the T rim pin to the +Sense pin. T o trim the output voltage lower, con- nect the required trim resistor from the T rim pin to the –Sense pin. Decrease in Output Voltage (%) 1000 100 0 1 234567891 0 Trim Resistance (kΩ) Trim-down Increase in Output Voltage (%) 1000 100 0 1 23456789 1 0 Trim Resistance (kΩ) 2.5V Trim-up RTRIM-DOWN = 100 – 2 5.11k Ω∆%{ }

Galaxy Power Inc. 155 Flanders Road Westborough, MA 01581 Telephone: 508-870-9775 Fax: 508-870-9796 e-mail: info@galaxypwr.com GAQW2V540 Operation Efficiency 02 0 4 0 Output Current (A) Efficiency (%) 36V Vin 48V Vin 75V Vin 3010 15 35 255 Power Dissipation 02 0 3 0 3 5 4 0 Output Current (A) Power Dissipation (W) 36V Vin 48V Vin 75V Vin 1051 5 25 Start Up CH2 CH3 CH1 1] Vout 1V/div 4mS/div 2] I out 10A/div 3] Enable 5V/div Voltage Ripple 1) Vout 20mV/div 2µS/div 10µF ext cap 20MHz BW Transient Response 1) Vout 200mV/div 200µS/div 2) Iout 10A/div CH2 CH1 Line/Load Regulation 2.60 2.55 2.50 2.45 2.40 01 0 2 0 Output Current (A) Output Voltage (V) 36V Vin 48V Vin 75V Vin 1553 0 25 35 40 Setpoint Accuracy 0.430% Line Regulation 0.077% Load Regulation 0.0558% Line & Load Regulation 0.1057%

Galaxy Power Inc. 155 Flanders Road Westborough, MA 01581 Telephone: 508-870-9775 Fax: 508-870-9796 e-mail: info@galaxypwr.com GAQW2V540 Operation Back Bias 1) Vout 1V/div 20mS/div Over-current Protection 3.0 2.5 2.0 1.5 1.0 0.5 45 49 51 Output Current (A) Output Voltage (V) 4746 50 48 Note: Over-current protection is blip-mode (aka hiccup). 36V Vin 48V Vin 75V Vin Over Voltage Protection 1) Vout 500mV/div 1mS/div 02 0 3 0 8 0 9 0 Ambient Temperature (°C) Output Current (A)

300 LFM

200 LFM

100 LFM

Ambient Temperature (°C) Output Current (A)

Galaxy Power Inc. 155 Flanders Road Westborough, MA 01581 Telephone: 508-870-9775 Fax: 508-870-9796 e-mail: info@galaxypwr.com

ORDERING INFORMATION

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. Standard Model Input Output Max Number Voltage Voltage Current GAQW2V540* 48V 2.5V 40A * Options: P= Positive Logic Version; High = On T= Tuned model T (T uned Model) Option Designed for higher di/dt and ∆I applications, the transient response has been modified to take advan- tage of the capacitance on the customer's PCB. This unit requires a minimum load capacitance of 5600 µF with an impedance magnitude of less than 0.005 Ω at 15kHz. It offers a minimum 3X improvement in the peak response compared to a standard unit. REF..270 MIN..011 .3858 BOTTOM VIEW 2.28 .15 .14 2.000 PIN 4.600 PIN 5.450 PIN 6.300 PIN 7.150 PIN 8.000 PIN 3 .600 PIN 2 .300 PIN 1 0.00 .90 PACKAGE DETAIL 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 6T rim 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 Pin Configuration —Bottom View Example Part No.: (All options shown) GAQW2V540 P S T Part Number Options: Positive Logic Version Optional Pin Lengths E = 0.18" M = 0.145" S = 0.12" T uned Model