GALAXY GALW9V647E

SIRIUS
48V Input, 9.6VDC, 47A Output
The Sirius is a 450W "stretched"
quarter-brick in Galaxy Power's
CoolConverter™ line of high-efficiency
DC/DC converters.
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"x4.25"x0.95"
including integrated heatsink
Two Year Warranty
Half-brick
The Sirius can be used to replace a bus
converter with the added benefit of a
regulated output and wide-range
telecom input voltage range (36-75V).
Control Functions
GALW9V647 Features
48V Input
9.6VDC, 47A Output
3-Quarter-brick
Patented Power Supply Control and Architecture
Microprocessor Controlled
Primary-side Enable, Choice of Logic
Protection Features
High Efficiency
93.5% at 9.6V, 47.0A
94.5% at 9.6V, 23.5A
Over Temperature Protection
Over Voltage Protection
Over Current Protection
Over/Under Input Voltage Protection
SIP
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
ISO 9001 CERTIFIED ORGANISATION
®
Certified to ISO 9001:2000
Part No. 05-GAL-01 Rev. 1.0 – 033105
Galaxy Power Inc.
155 Flanders Road
WWW.GALAXYPWR.COM
Westborough, MA 01581
Telephone: 508-870-9775
GALW9V647 – 1
Fax: 508-870-9796
e-mail: [email protected]
General Specifications
VIN = 48VDC, TA@25° C, 300 LFM Airflow, VOUT=9.6V, 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
Operating Input Voltage
36
Typ
Input Current, Low Line
Max
Units
75
VDC
13.5
A
Input Capacitance
8
µF
Input Hysteresis, Low Line
2
VDC
Output Characteristics
Output Voltage
9.2
9.6
Output Power
11.52
10
V
450
W
12.48
V
Over Voltage Protection, Latching
11.04
Operating Output Current Range
0
47
A
Output Current Limit
50
65
A
Efficiency, Full Load1
93
%
Features
Overtemperature Protection, Thermal Sensor, Latching2
125
Switching Frequency, Fixed
250
Trim Range
8.64
°C
kHz
10.56
V
Notes:
1. For temperatre rise design calculation.
2. PCB less than 130° C.
General Specifications
Operating Temperature
–40° C to +100° C
Storage Temperature
–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
MTBF
TBD
Telcordia (Bellcore)
WWW.GALAXYPWR.COM
GALW9V647 – 2
Galaxy Power Inc.
TBD
155 Flanders Road
Westborough, MA 01581
Telephone: 508-870-9775
Part No. 05-GAL-01 Rev. 1.0 – 033105
Fax: 508-870-9796
e-mail: [email protected]
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.
Protection and Control
Undervoltage Hysteresis
6
Output Voltage (V)
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.
5
4
3
2
1
0
30
ON/OFF Logic Option:
31
32
33
35
34
36
37
Input Voltage (V)
Overvoltage Hysteresis
6
Output Voltage (V)
The ON/OFF control logic can be either Positive
(standard) or Negative to enable the converter. For
Negative logic, bring the ON/OFF pin to less than
1.0V with respect to the –INPUT pin to enable the
converter. The pull-down must be able to sink 100µA.
For Positive logic, bring the ON/OFF pin to greater
than 4.0V with respect to the –INPUT pin and be
limited to less than 10V. The ON/OFF pin has a builtin pull up resistor of approximately 100kΩ to +5V.
5
4
3
2
1
0
76.5
77
77.5
78
78.5
79
79.5
80
80.5
Input Voltage (V)
Part No. 05-GAL-01 Rev. 1.0 – 033105
Galaxy Power Inc.
155 Flanders Road
WWW.GALAXYPWR.COM
Westborough, MA 01581
Telephone: 508-870-9775
GALW9V647 – 3
Fax: 508-870-9796
e-mail: [email protected]
Application Notes
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.
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.
Trim-up:
{
RTRIM-UP =
Vo (100+∆%)
–
1.225∆%
}
(100+2∆%)
∆%
5.11kΩ
Trim-down:
{
100
∆% – 2
RTRIM-DOWN=
}
5.11kΩ
Trim-down
1000
Trim Resistance (kΩ)
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 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.
100
10
0
1
2
3
4
5
6
7
8
9
10
Decrease in Output Voltage (%)
Safety:
An external input fuse must always be used to meet
these safety requirements.
External Output Trimming
+ Out
Trim
– Out
WWW.GALAXYPWR.COM
GALW9V647 – 4
Galaxy Power Inc.
155 Flanders Road
Westborough, MA 01581
Telephone: 508-870-9775
Part No. 05-GAL-01 Rev. 1.0 – 033105
Fax: 508-870-9796
e-mail: [email protected]
GALW9V647 OPERATION
Efficiency
Power Dissipation
96
40
Power Dissipation (W)
Efficiency (%)
95
94
93
92
91
90
89
36V Vin
48V Vin
75V Vin
88
87
35
30
25
20
15
36V Vin
48V Vin
75V Vin
10
5
0
86
0
20
10
30
40
0
50
20
10
Output Current (A)
Start Up
40
50
Voltage Ripple
CH2
CH2
CH1
CH1
CH3
30
Output Current (A)
1) Vout 50mV/div 1µS/div
2) Iout 10A/dif
1) Vout 2V/div 10mS/div
2) Iout 10A/div
3) Enable 5V/div
Line/Load Regulation
Transient Response
10.6
Setpoint Accuracy 0.6396%
Line Regulation 0.0212%
Load Regulation 0.1638%
Line & Load Regulation 0.1794%
Output Voltage (V)
10.4
CH1
CH2
10.2
10.0
9.8
9.6
9.4
36V Vin
48V Vin
75V Vin
9.2
9.0
8.8
8.6
0
10
20
30
40
50
Output Current (A)
1) Vout 500mV/div 400µS/div
2) Iout 10A/div
Part No. 05-GAL-01 Rev. 1.0 – 033105
Galaxy Power Inc.
155 Flanders Road
WWW.GALAXYPWR.COM
Westborough, MA 01581
Telephone: 508-870-9775
GALW9V647 – 5
Fax: 508-870-9796
e-mail: [email protected]
GALW9V647 Operation
Back Bias
Thermal Derating
50
45
Output Current (A)
40
CH1
CH2
35
30
25
Lengthwise:
400 LFM
200 LFM
Crosswise
400 LFM
200 LFM
20
15
10
5
0
0
10
20
30
40
50
60
70
80
90
Ambient Temperature (°C)
1) Vout 2V/div 10mS/div
2) Enable 5V/div
Over Voltage Protection
Over-current Protection
Note: Over-current protection is blip-mode (aka hiccup).
Output Voltage (V)
10
8
36V Vin
48V Vin
75V Vin
6
4
2
0
47
52
57
62
67
Output Current (A)
WWW.GALAXYPWR.COM
GALW9V647 – 6
Galaxy Power Inc.
1) Vout 2V/div 4mS/div
155 Flanders Road
Westborough, MA 01581
Telephone: 508-870-9775
Part No. 05-GAL-01 Rev. 1.0 – 033105
Fax: 508-870-9796
e-mail: [email protected]
PACKAGE DETAIL
Ordering Information
Standard Model
Number
GALW9V647E*
Pin Configuration
Input
Voltage
Output
Voltage
Max
Current
48V
9.6V
47A
* Options: E = 0.18" pins (± 0.01")
Note: Standard unit is positive logic and requires 2000µF of output
load capacitance for stability.
—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
Trim
0.040
6
+ Output
0.060
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.
Part No. 05-GAL-01 Rev. 1.0 – 033105
Galaxy Power Inc.
155 Flanders Road
WWW.GALAXYPWR.COM
Westborough, MA 01581
Telephone: 508-870-9775
GALW9V647 – 7
Fax: 508-870-9796
e-mail: [email protected]