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ARIES Series
5V Input, 3.3VDC, 24A Output, 3.2-5V Input, 2.5VDC, 24V Output
The Aries Series are very high efficiency non-isolated DC/DC Converters with:
Horizontal or Vertical Mount Very High Efficiency 2.5V or 3.3V Output @ up to 24A Fixed Frequency Operation Trimmable Over Voltage Protection Output Voltage Trim Two Year Warranty
Control Functions
Remote Sense Output Enable
Protection Features
Over Temperature Protection Over Voltage Protection Over Current Protection
Typical Characteristics
Output Setpoint Accuracy: 1% Load & Line Regulation: 0.5% Noise & Ripple: 90mVp-p Total Regulation: 5% Output Trim
Aries Series, Page 1
WWW.GALAXYPWR.COM
Part No. 99-001 Rev. 2.2
General Specifications
Operating Air Temperature from 0C to +45C with 500 LFM.
3.3V Output Unit Input Characteristics
Parameter Symbol Test Condition Min Typ Max Units
Operating Input Range VI IO = 24A 4.5 No Load Input Power PIL VI = VInom -- Input Current II VI = 5V, IO = 24A, VO = 3.3V -- Efficiency N VI = 5V, IO = 24A, VO = 3.3V 88 Reflected Input Ripple (Note 1) dII VI = 5V, IO = 24A -- Switching Frequency FS -- Output Characteristics (Over the complete baseplate temperature and input voltage ranges.) Output Voltage Set Point VO VI = 5V, IO = 12 A 3.267 Rated Output Current IO VO = VOnom (externally) -- Load & Line Regulation VI = 4.5-5.5V, IO = 0-24A -- Noise and Ripple VI=5.0V, IO = 24A -- Load Range 0 Total Regulation VI = 4.5-5.5V, IO = 0-24A 3.135 (Load, Line, Temp, Drift) -- Remote Sense Compensation VI = 4.5-5.5V, IO = 24A (Round Trip) Output Overvoltage Protection (Nom) VI = 5V, IO = 12A, VO = 3.3V 3.8 See Note 3, Latching Output Voltage Protection tOVP VI = 5V, IO = 12A, VO = 3.3V -- Response Time Current Limit (Nom) IL VI = 5V, VO = 3.3V 25 VI = 5V, IO = 42A -- Short Circuit Output VSC Voltage Compliance Load Transient Response, VOPK IO = 9-14A@0.05A/s(di/dt), -- pos or neg step VO Deviation from Steady State Settling Time VO = 3.3V -- Turn on Time tON VI = 4.5-5.5V, IO = 0-24A -- per figures 3, 4, & 5 External Load Capacitance (Note 2) 1000
-- -- -- -- -- 250 3.300 24 -- 60 -- 3.300 -- -- -- -- -- -- -- -- --
5.5 2 20 -- 5.2 --
V W A % AP-P kHz
3.333 V -- A 15 mV 90 mVP-P 24 A 3.465 V 100 4.2 150 30 0.6 80 1200 10 9900 mV V s A VO mV s ms f
Notes: 1. Input filter capacitor Cin= 1000F (330F, ESR 60m, 3 capacitors in parallel) Provide 3" loop between positive terminal of Cin and Vin of the converter to measure reflected input ripple current. 2. The converter output voltage shall be stable when (30) 330F (9900F total) tantalum (ESR 60m) capacitors are connected across the output of the converter. 3. Adjustment pins J2-18 & 19 are normally left open; see Output Voltage Setting Table on page 5 if using OVP and output voltage trim adjustment.
General Specifications
Operating Temperature 0C to +45C Ambient Air Temp. Storage Temperature -40C to +100C Relative Humidity 10% to 95% RH, Non-condensing Vibration 10-500Hz, 0.75g peak Material Flammability UL94V-0 Weight 100 grams typ. with heatsink MTBF MIL-HDBK-217E 1,200,000 hours*
*Note: 50% load; 45C ambient, 500LFM; calculated MTBF
Aries Series, Page 2
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Part No. 99-001 Rev. 2.2
General Specifications
Operating Air Temperature from 0C to +45C with 200 LFM.
2.5V Output Unit Input Characteristics
Parameter Symbol Test Condition Min Typ Max Units
Operating Input Range (See note 1) No Load Input Power Input Current Efficiency Reflected Input Ripple (See note 2) Searching Frequency
VI IO = 24A PIL VI = VInom II VI = 3.43V, IO = 24A, VO = 2.5V II VI = 5V, IO = 24A, VO = 2.5V N VI = 3.43V, IO = 24A, VO = 2.5V N VI = 5V, IO = 24A, VO = 2.5V dII VI = 3.43V, IO = 24A dII VI = 5V, IO = 24A FS
3.2 -- -- -- 86 83.5 -- -- -- 2.470 -- -- -- 0 2.370 -- 2.76 -- 25 -- -- -- -- 150
-- -- -- -- -- -- -- -- 250 2.495 24 -- 60 -- 2.495 -- -- -- -- -- -- -- -- --
5.5 2 21.5 15 -- -- 3.0 5.2 --
V W A A % % AP-P AP-P kHz
Output Characteristics
Output Voltage Set Point VO VI = 5V, IO = 12A Rated Output Current IO VO = VOnom (externally) Load & Line Regulation VI = 3.2-5.5V, IO = 0-24A Noise and Ripple VI=5.0V, IO = 24A Load Range Total Regulation VI = 3.2-5.5V, IO = 0-24A (Load, Line, Temp, Drift) Remote Sense Compensation VI = 3.2-5.5V, IO = 24A (Round Trip) Output Overvoltage Protection (Nom) VI =3.43V, IO = 12A, VO = 2.5V See note 4, Latching Output Voltage Protection tOVP VI = 3.43V, IO = 12A, VO = 2.5V Response Time Current Limit IL VI = 5V, VO = 2.5V Short Circuit Output VSC VI = 5V, IO = 42A Voltage Compliance Load Transient Response, VOPK IO = 9-14A@0.05A/s(di/dt), VO Deviation from Steady State pos or neg step Settling Time VO = 2.5V Turn on Time tON VI = 3.19-5.5V, IO = 0-24A per figures 3, 4, & 5 External Load Capacitance (note 3) 2.520 V -- A 15 mV 90 mVP-P 24 A 2.620 V 100 2.94 150 30 0.6 60 1200 10 9,900 mV V s A VO mV s ms f
Notes: 1. Connector J1 pins 1, 2, 3, and 5 are all connected together. Connector J1 pin 4 is always connected to 3.3V rail. 2. Input filter capacitor Cin= 1000F (330F, ESR = 60m, 3 capacitors in parallel) Provide 3" loop between positive terminal of Cin and Vin of the converter, to measure reflected input ripple current. 3. The converter output voltage shall be stable when (30) 330f (9900F total) tantalum (ESR 60m) capacitors are connected across the output of the converter. 4. Adjustment pins J2-18 & 19 are normally left open; see Table IV if using OVP and output voltage trim adjustment.
Aries Series, Page 3
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Part No. 99-001 Rev. 2.2
General Specifications
Output Voltage Setting & Typical Output Voltage DC_OK_H Threshold -- 3.3V Output Unit
Trimmed Vout -1.2% Typ Vo +1.2% -1.2% VOVP Trip Typ +1.2% R1 TRIM R2 OVP Output Voltage DC_OK_H Threshold
2.662 2.919 3.031 3.154 3.264
2.694 2.954 3.068 3.192 3.303
2.727 2.989 3.105 3.231 3.343
3.642 3.660 3.723 3.819 3.915
3.687 3.705 3.768 3.865 3.962
3.731 3.749 3.814 3.912 4.010
2.26K 4.32K 6.65K 14.7K OPEN
10.6K 11.4K 15.4K 31.6K OPEN
2.809 6% 2.823 6% 2.871 6% 2.945 6% 3.019 6%
Notes: 1. R1 and R2 are external to the converter and shall be 0.1% tolerance. 2. Connect R1 from connector J2 pin 18 to J2 pin 16 to adjust output. Connect R2 from connector J2 pin 19 to J2 pin 16 to adjust OVP level. 3. Output Voltage Setting tolerance 1.2% at V1 = 5.0V & IO= 12A
Output Voltage Setting & Typical Output Voltage DC_OK_H Threshold -- 2.5V Output Unit
Output Voltage Min VOVP Trip Typ Max R1 R2 Output Voltage DC_OK_H Threshold
2.000 2.200 2.300 2.400 2.500
2.40 2.46 2.56 2.66 2.76
2.50 2.52 2.60 2.70 2.80
2.60 2.64 2.74 2.84 2.94
2.26K 4.32K 6.65K 14.7K OPEN
10.6K 11.4K 15.4K 31.6K OPEN
1.755 6% 1.775 6% 1.800 6% 1.895 6% 1.965 6%
Notes: 1. R1 and R2 are external to the converter and shall be 0.1% tolerance. 2. Connect R1 from connector J2 pin 18 to J2 pin 16 to adjust output. Connect R2 from connector J2 pin 19 to J2 pin 1 to adjust OVP level. 3. Output Voltage Setting tolerance 1.0% at V1 = 3.43V & IO= 12A
Aries Series, Page 4
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Part No. 99-001 Rev. 2.2
Application Notes
Control Signal Characteristics
Parameter Symbol Test Condition Min Typ Max Units
Enable_L Enable_L Source Current Enable_L Voltage Low Enable_L Voltage High Enable_L Low (Turn On Delay) Enable_L Low (Output Voltage) Bias Current (12 Volt) DC_OK_H High DC_OK_H Low Fault_H High (OVP latched) Fault_H Low Fault_H Source Current (OVP latched)
VI = 5V, IO = 24A -- -- 2.6 -- 2.458 VI = 5V, IO = 24A -- VI = 3.43V, IO = 24A, VO = 2.1V 3.3 VI = 3.43V, IO = 24A, VO = 1.8V -- VI = 3.43V, IO = 24A 3.3 -- 10 -- -- -- -- 2.495 70 -- -- -- -- -- 1.0 0.8 -- 10 2.532 100 -- 0.8 5 0.8 -- mA V V ms V mA V V V V mA
I bias
Note: Fault-H occurs when the output voltage level is over the OVP threshold, pass transistor in the converter is shorted when input voltage is applied, or when a difference between input to output voltage exceeds 2.4 volts with the input voltage only at 3.3V nominal and not at 5V nominal.
Enable L: This input signal is used to enable the output of the converter when activated (active Low). The signal is referenced to output side (-Sense) or GND. Enable Circuit Turn-On Time
ON >5V OFF 0.6V
Turn-On Time
5V TURN ON TIME FROM VENABLE GOING LOW
Enable
To VENABLE Pin 2N7000 or Equivalent To (-)
VOUT 10%
0.8V Time
ON/OFF
90%
Regulation Band
Time TON
Output Load Conditions
Aries Series, Page 5
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Part No. 99-001 Rev. 2.2
Package Detail
Heatsink fins cutaway for clarity
2.62 Max 1.125
1 2
J1
Pin Designation Pin Designation
J3 AIRFLOW 1.425 Connectors (Far Side) J1 J2
10 2 91 20 19
1.67 MAX
1 3 5 7 9
Pin
NOTES: J1, J2, J3 PINS ON 0.100 CENTERS OUTPUT PINS ARE 25MM SQ.
VIN VIN VIN VIN RTN VIN RTN
Designation
2 4 6 8 10
VIN NC VIN RTN VIN RTN NC
Designation
J2
2 1
Pin
0.550 1.250 TOP VIEW (HEAT SINK FACING UP) SIDE 2 HEATSINK 0.145 0.30 MAX COMPONENT HEIGHT HORIZONTAL MOUNT 2.60 MAX 0.28
0.625 MAX
0.045 0.010
0.318 MIN
1 3 5 7 9 11 13 15 17 19
VOUT RTN VOUT RTN VOUT RTN VOUT RTN VOUT VOUT VOUT +SENSE ENABLE_L OVP_ADJ
2 4 6 8 10 12 14 16 18 20
FAULT_H DC_OK_H VOUT RTN VOUT VOUT VOUT VOUT -SENSE TRIM +12V
J3
0.30 0.38
Horizontal mount. Mechanical support only.
1.65 MAX
TOP VIEW SIDE 1
20
J2 19 0.23
2 10 19
2 1 J1
HEATSINK 1.250 0.550
20 19 2 10 19 2 1
0.045
0.100 0.255 0.455 0.710 MAX
0.050 SIDE 2
HEATSINK 2.600 MAX VERTICAL MOUNT
ORDERING INFORMATION
Standard Model Number Input Voltage Output Voltage Max Current Efficiency Typ @ max load
Example: GPA3V0-24 H
Part Number Option: Package Style H = Horizontal or V = Vertical
GPA3V0-24H or V 3.2-5.0V 3.3V GPA3V0-16H or V 3.2-5.0V 3.3V GPA2V5-24H or V 5.0V 2.5V
24A 16A 24A
89.5% 83% 87%
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
Aries Series, Page 6
(c) Copyright 2000 Galaxy Power. Specifications subject to change without notice.
WWW.GALAXYPWR.COM
Part No. 99-001 Rev. 2.2

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