GHPC5V020EET001L

Very High Efficiency DC/DC Converter 24/48V Input, 1.5V, 1.8V, 2.0V, 2.5V, 3.3V DC, 30A Output or 5.0V DC, 20A Output PISCES Series The Pisces Series is the first high-efficiency quarter brick CoolConverter™ in the Galaxy family of high-efficiency DC/DC converters. Industry Standard Pinout and Footprint Typical Efficiency 92% at 3.3V, 15A; 90% at 3.3V, 30A 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 Optional Baseplate or Low Profile Heatsink for Improved Thermal Performance Header with M3 Metal Inserts for Mechanical Connection to PCB Two Year Warranty The open-frame Pisces is available with an optional baseplate or low profile heatsink for maximum thermal performance. 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 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 Trim Pisces Series, Page 1 WWW.GALAXYPWR.COM Part No. 99-002 Rev. 4.0–093003 General Specifications VIN = 48VDC, TA@25°C, 300 LFM Airflow, VOUT=3.3V, 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 Input Current (Model Dependent) Input Capacitance Input Hysteresis, Low Line Output Characteristics Regulation Over Line, Load & Temperature Voltage Ripple Voltage Ripple, 20MHz BW Current Range Current Limit Inception Short Circuit Current, Peak (see Note below) Output Transient Response, 50% to 75% load change, 1A/µsec Settling Time to ±1% Turn-on Time to 98%Vnom Output Overshoot at Turn-on Trim Range Overvoltage Protection, Latching Isolation Isolation Test Voltage, Input/Output (Basic) Isolation Resistance Features Overtemperature Protection, Thermal Sensor, Latching* Switching Frequency, Fixed 36 48 4.5 2 75 5 VDC A µF VDC 98 102 20 150 %VNOM mV RMS mV P–P A A A %VOUT µS mS %VOUT %VOUT %VOUT VDC MΩ 0 31 30 37 41 5 300 35 1 90 130 2000 10 110 117 200 °C kHz Notes: 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. For specific output voltage specifications, see the corresponding detailed data sheet. *PCB less than 130°C General Specifications Operating Temperature Storage Temperature Relative Humidity Vibration Material Flammability Weight MTBF Telcordia (Bellcore) -40°C to +100°C -55°C to +125°C 10% to 95% RH, Non-condensing 2 to 9Hz, 3mm disp., 9 to 200Hz 1g UL V-0 35 grams 1,600,000 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. Pisces Series, Page 2 WWW.GALAXYPWR.COM Part No. 99-002 Rev. 4.0–093003 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. • Low common-mode noise as a result of lower capacitance in the transformer compared to planar magnetics and metal baseplate designs. • Higher reliability than planar transformer designs that can suffer from via fatigue from thermal cycling, and metal baseplate designs with board to board interconnects that are subject to mechanical stress on electrical connections. 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. Overvoltage Lockout Input Current Voltage Rising Voltage Falling 75 76 77 78 79 80 Input Voltage (V) 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 below 1.0 V 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. Undervoltage Lockout Input Current Voltage Rising Voltage Falling 30 32 34 36 38 40 Input Voltage (V) Pisces Series, Page 3 WWW.GALAXYPWR.COM Part No. 99-002 Rev. 4.0–093003 Application Notes Output Over Voltage Protection: The output voltage is constantly monitored by the microprocessor and a redundant secondary-side crowbar circuit that is set to a higher trip point than the microprocessor protection. 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. 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 diagram below. Trim-down 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. Trim-down (%) 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. RTRIM-DOWN = { 100 –2 ∆% } 5.11kΩ Trim-up (for 3.3V) 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. RTRIM-UP = { Vo (100+∆%) (100+2∆%) − 1.225∆% ∆% } 5.11kΩ Safety: An external input fuse must always be used to meet these safety requirements. External Output Trimming + Sense Trim – Sense Pisces Series, Page 4 WWW.GALAXYPWR.COM Part No. 99-002 Rev. 4.0–093003 GHPW3V3–30 Operation Efficiency 94 92 14 Power Dissipation Power Dissipation (W) 12 10 8 6 4 2 0 Efficiency (%) 90 88 86 84 82 80 0 5 10 15 20 25 30 36V Vin 48V Vin 75V Vin 36V Vin 48V Vin 75V Vin 0 5 10 15 20 25 30 Output Current (A) Load Current (A) Output Voltage vs Line Load 3.5 Output Voltage (V) 3.0 2.5 2.0 1.5 1.0 0.5 0 28 30 32 34 36 38 40 42 36V Vin 48V Vin 75V Vin Output Current (A) Transient Response Voltage Ripple VOUT VOUT 20 IOUT 10 Start-up Waveform w/No Load [ T T Thermal Derating Curves 35 ] 30 VOUT Iout (A) 25 20 300 LFM, Low Profile Heat Sink 300 LFM, Metal Plate 200 LFM, Low Profile Heat Sink 300 LFM, Open Frame 5 200 LFM, Metal Plate 200 LFM, Open Frame 0 2 15 ON/OFF 10 1 Ch1 5.00V Ch2 1.00 V M 4.00ms A Ch1 2.40V 20 30 40 50 60 70 80 Ambient Air Temperature (deg C) Pisces Series, Page 5 WWW.GALAXYPWR.COM Part No. 99-002 Rev. 4.0–093003 PACKAGE DETAIL MOUNTING INSERT CONNECTED TO CASE PIN 1.030 PIN 1 1.45 PIN 2 PIN 3 0.815 0.515 0.215 0 .210 BOTTOM VIEW .210 1.860 2.28 Pin Configuration — Bottom View Pin 1.030 0.815 PIN 8 PIN 7 0.515 PIN 6 0.365 PIN 5 PIN 4 0 MOUNTING INSERT M3 X 0.5 4 PLACES Function Pin Dia. (in.) A A A 0.070 0 2.000 PIN TO PIN 1 2 3 4 5 6 7 8 Notes: – Input On/Off + Input + Output + Sense Trim – Sense – Output 0.040 0.040 0.040 0.060 0.040 0.040 0.040 0.060 0.50 0.50 (opt. L = 0.465) SIDE VIEW 0.20 0.010 ±0.008 0 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 Pisces Series, Page 6 WWW.GALAXYPWR.COM Part No. 99-002 Rev. 4.0–093003 ORDERING INFORMATION Standard Model Number Output Voltage Max Current Typical Efficiency Half Load Full Load Standard Model Number Output Voltage Max Current Typical Efficiency Half Load Full Load 48V Input Models (Designated W) GHPW5V020* 5.0V 20A GHPW3V330* 3.3V 30A GHPW2V530* 2.5V 30A GHPW2V030* 2.0V 30A GHPW1V830* 1.8V 30A GHPW1V530* 1.5V 30A 91% 92% 90% 89% 88% 86% 90% 90% 87% 85% 84% 82% 24V Input Models (Designated C) GHPC5V020* 5.0V 20A GHPC3V330* 3.3V 30A GHPC2V530* 2.5V 30A GHPC2V030* 2.0V 30A GHPC1V830* 1.8V 30A GHPC1V530* 1.5V 30A 90% 91% 89% 88% 87% 85% 88% 89% 86% 84% 83% 81% Ordering Information Example Part No.: GHPW3V330 48V input 3.3V@ 30A output Negative Logic 0.20" Pin Length Open Frame * Options: P = Positive Logic Version; High = On E = 0.18" Pins (±0.01") M = 0.145" Pins (±0.01") S = 0.12" Pins (±0.01") R = Heatsink Ready T = Tuned model** L = Low Profile (0.465" height – open frame only) Heatsink Part Numbers Part Number Height Typical Thermal Performance Natural Convection Forced Convection Power Dissipation* Thermal Resistance** 001 002 003 004 005 0.25" 0.50" 1.00" 0.13" 0.70" 5W 7W 11W TBD TBD 5.8°C/W 3.2°C/W 2.0°C/W TBD TBD ** @ 300'/min. Options Code: (All options shown) GHPW 3V330 P S R T 00X L Part Number (from chart above) Options: Positive Logic Version Optional Pin Lengths E = 0.18" M = 0.145" S = 0.12" Heatsink-ready Tuned Model Heatsink 001 = 0.25" 002 = 0.50" 003 = 1.00" 004 = 0.13" 005 = 0.70" Low Profile (0.465" height) *@ 60°C rise heatsink to ambient **T (Tuned Model) Option Designed for higher di/dt and ∆I applications, the transient response has been modified to take advantage of the capacitance on the customer's PCB. This unit requires a minimum load capacitance of 5600µF with an impedance magnitude of less than 0.005Ω at 15kHz. It offers a minimum 3X improvement in the peak response compared to a standard unit. 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. 155 Flanders Road Westborough, MA 01581 508-870-9775 Fax: 508-870-9796 e–mail: galaxy@galaxypwr.com website: http://www.galaxypwr.com Pisces Series, Page 7 Part © Copyright 2003 Galaxy Power. Specifications subject to change without notice. No. 99-002 Rev. 4.0–093003 WWW.GALAXYPWR.COM