AQUARIUS DC/DC CONVERTERS
POWER PRODUCTS
48V Input – 3.3VDC – 30A Output
GAQW3V330
GAQW3V330 – 1/8 Brick Aquarius Series
•
Industry standard pinout and footprint
•
No heat sink required
• High efficiency: 91% at 3.3V, 30A
91% at 3.3V, 15A
•
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
Control Functions
Typical Characteristics
•
Uses patented power supply control and architecture
•
Microprocessor controlled
•
Primary-side enable, choice of logic
•
Output setpoint accuracy: ± 1%
•
Load regulation: ± 0.2%
Protection Features
•
Line regulation: ± 0.2%
•
Over temperature protection
•
Regulation over line, load, and temperature: ± 2%
•
Over voltage protection
•
Low output ripple
•
Over current protection
•
Output trim
•
Over/Under input voltage protection
Ordering Information
Standard Model
Number
GAQW3V330*
* Options:
P = Positive Logic Version;
High = On
E = 0.18" Pins (± .01")
M = 0.145" Pins (± .01")
S = 0.12" Pins (± .01")
T = Tuned model**
Input
Voltage
Output
Voltage
Max
Current
48V
3.3V
30A
**T (Tuned Model) Option
Designed for higher di/dt and ∆l
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 minmum
3X improvement in the peak response
compared to a standard unit.
Example Part Number:
(All options)
GAQW3V330 P S T
Part Number
Options:
Positive Logic Version
Optional Pin Lengths
E = 0.18"
M = 0.145"
S = 0.12"
Tuned Model
©2006 Bel Fuse Inc.
Specifications subject to change without notice. 11.06
Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 • Tel 508-870-9775 • Fax 508-870-9796 • www.belpower.com
page 1
POWER PRODUCTS
AQUARIUS DC/DC CONVERTERS
48V Input – 3.3VDC – 30A Output
GAQW3V330
Input Specifications
Parameter
Operating Input Voltage
Min
Typical
Max
Units
36
48
75
VDC
3.5
A
Input Current
Input Capacitance
3
µF
Input Hysteresis, Low Line
2
VDC
VIN = 48VDC, TA@25˚ C, 300 LFM Airflow, VOUT = 3.3VDC, IOUT = Full load unless otherwise noted.
Available output power depends on ambient temperature and good thermal management.
(See application graphs for limits.)
Output Specifications
Parameter
Min
Typical
Max
Units
3.234
3.3
3.366
V
Voltage Ripple
20
mV RMS
Voltage Ripple, 20MHz BW
60
mV P–P
0
30
A
30.9
42
A
Short Circuit Current, Peak1
45
A
Output Transient Response, 50% to 75% Load Change, 1A/µsec2
16
%VOUT
Settling Time to ± 1%
200
µS
Turn-on Time to 98% Vnom
25
ms
Regulation Over Line, Load & Temperature
Current Range
Current Limit Inception
Output Overshoot at Turn-on
Trim Range
0
70
Over Voltage Protection, Latching
%VOUT
110
130
%VOUT
%VOUT
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 Tuned (T) model information.
©2006 Bel Fuse Inc.
Specifications subject to change without notice. 11.06
Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 • Tel 508-870-9775 • Fax 508-870-9796 • www.belpower.com
page 2
AQUARIUS DC/DC CONVERTERS
POWER PRODUCTS
48V Input – 3.3VDC – 30A Output
GAQW3V330
Isolation Specifications
Parameter
Min
Isolation Test Voltage, Input/Output (Basic)
2250
VDC
10
MΩ
Isolation Resistance
Typical
Max
Units
Features
Parameter
Min
Typical
Over Temperature Protection, Thermal Sensor, Latching3
Switching Frequency, Fixed
Max
Units
110
˚C
250
kHz
3.PCB less than 130˚ C.
Approvals and Standards
General Specifications
Operating Temperature
Storge Temperature
Relative Humidity
Vibration
Material Flammability
Weight
-40˚ C to + 100˚ C
-55˚ C + 125˚ C
10% to 95% RH, Non-condensing
2 to 9 Hz, 3mm disp., 9 to 200 Hz, 1g
UL V-0
27 grams
MTBF Telcordia (Bellcore)
2.2 million hours
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.
©2006 Bel Fuse Inc.
Specifications subject to change without notice. 11.06
Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 • Tel 508-870-9775 • Fax 508-870-9796 • www.belpower.com
page 3
AQUARIUS DC/DC CONVERTERS
POWER PRODUCTS
48V Input – 3.3VDC – 30A Output
GAQW3V330
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.
•
An advanced microcontroller reduces parts count while
adding features, performance and flexibility in the design.
•
Low common-mode noise results from lower capacitance
in the transformer from balanced winding design.
Protection and Control
Over Voltage Hysteresis
1.0
Normalized
Output Voltage
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.
0
76.5
77
77.5
78
78.5
79
79.5
80
80.5
Input Voltage (V)
Under Voltage Hysteresis
©2006 Bel Fuse Inc.
Normalized
Output Voltage
1.0
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 nonlatching is required, consult factory.
0
30
31
32
33
34
35
36
Input Voltage (V)
Specifications subject to change without notice. 11.06
Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 • Tel 508-870-9775 • Fax 508-870-9796 • www.belpower.com
page 4
37
AQUARIUS DC/DC CONVERTERS
POWER PRODUCTS
48V Input – 3.3VDC – 30A Output
GAQW3V330
CoolConverter™
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.
Trim-up
Rtrim-UP
{
=
3.3 (100+∆%) _ (100+2∆%)
1.225∆%
∆%
}
5.11kΩ
3.3V Trim-up
Trim Resistance (kΩ)
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.
1000
100
10
0
1
2
3
4
5
6
7
8
9
10
Increase in Output Voltage (%)
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.
Trim-down
Safety
An external input fuse must always be used to meet these
safety requirements.
Rtrim-DOWN =
External Output Trimming
{
}
100 _ 2
∆%
5.11kΩ
Trim-down
+Sense
Trim
10K
Trimpot
Trim
Down
–Sense
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. The Trim-down equation applies to all
voltages.
Trim Resistance (kΩ)
Trim
Up
1000
100
10
0
1
2
3
4
5
6
7
8
9
10
Decrease in Output Voltage (%)
©2006 Bel Fuse Inc.
Specifications subject to change without notice. 11.06
Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 • Tel 508-870-9775 • Fax 508-870-9796 • www.belpower.com
page 5
AQUARIUS DC/DC CONVERTERS
POWER PRODUCTS
48V Input – 3.3VDC – 30A Output
GAQW3V330
Power
Dissipation
Power
Dissipation
94
14
92
12
Power Dissipation (W)
Efficiency (%)
Efficiency
EfficiencyData
90
88
86
84
36V Vin
48V Vin
75V Vin
82
80
0
5
10
15
20
25
30
Output Current (A)
10
8
6
36V Vin
48V Vin
75V Vin
4
2
0
0
5
10
15
20
25
30
Output Current (A)
Start
Up
Start Up
Voltage
Ripple
Voltage Ripple
CH2
CH1
CH3
1) Vout 20mV/div 2µS/div
1) Vout 1V 4mS/div
2) Iout 10A/div
3) Enable 5V/div
1.V
2µS/div
10µFOUT
ext cap20mV/div
20MHz BW
10µF ext cap 20MHz BW
1. VOUT 1V 4mS/div
2. IOUT 10A/div
3. Enable 5V/div
Line/Load
Line/Load Regulation
Regulation
Transient
TransientResponse
Response
Output Voltage (V)
3.37
Setpoint Accuracy 0.8061%
Line Regulation 0.0595%
Load Regulation 0.0397%
Line & Load Regulation 0.0839%
3.35
3.33
36V Vin
48V Vin
75V Vin
3.31
3.29
3.27
3.25
3.23
0
5
10
15
20
25
30
Output Current (A)
©2006 Bel Fuse Inc.
1) Vout 500mV/div 200µS/div
1.2) Iout
VOUT
10A/div500mV/div 200µS/div
2. IOUT 10A/div
Specifications subject to change without notice. 11.06
Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 • Tel 508-870-9775 • Fax 508-870-9796 • www.belpower.com
page 6
AQUARIUS DC/DC CONVERTERS
POWER PRODUCTS
48V Input – 3.3VDC – 30A Output
GAQW3V330
Back Bias
Over Current Protection
Back Bias
Note: Over current
protectionProtection
is blip-mode (aka hiccup).
Over-current
Note: Over-current protection is blip-mode (aka hiccup).
3.5
Output Voltage (V)
3.0
2.5
36V Vin
48V Vin
75V Vin
2.0
1.5
1.0
0.5
0
30
35
40
45
Output Current (A)
1) Vout 1V/div 20mS/div
1. VOUT 1V/div 20mS/div
Over Voltage Protection
Over Voltage Protection
1) Vout 1V/div 0.25mS/div
1. VOUT 1V/div 0.25 mS/div
Thermal Derating
Thermal Derating
Thermal Derating
Crosswise
Airflow
Thermal Derating
Lengthwise
Airflow
Crosswise Airflow
35
30
Output Current (A)
Output Current (A)
30
25
20
15
300 LFM
200 LFM
100 LFM
10
5
0
Lengthwise Airflow
35
25
20
15
5
0
0
10
20
30
300 LFM
200 LFM
100 LFM
10
40
50
60
70
Ambient Temperature (°C)
80
90
0
10
20
30
40
50
60
70
80
90
Ambient Temperature (°C)
©2006 Bel Fuse Inc.
Specifications subject to change without notice. 11.06
Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 • Tel 508-870-9775 • Fax 508-870-9796 • www.belpower.com
page 7
AQUARIUS DC/DC CONVERTERS
POWER PRODUCTS
48V Input – 3.3VDC – 30A Output
GAQW3V330
Mechanical
GAQW3V330
.385
.270 REF.
.011 MIN.
.600 PIN 4
.450 PIN 5
.300 PIN 6
.150 PIN 7
0.00 PIN 8
PIN 3 .600
.90 PIN 2 .300
PIN 1 0.00
.15
BOTTOM VIEW
.14
2.000
Pin Configuration – 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
– Sense
0.040
6
Trim
0.040
7
+ Sense
0.040
8
+ Output
0.060
2.28
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
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other
hazardous substances from electronic products. These parts are not however compatible with
the higher temperatures associated with lead free solder processes and must be soldered using
a reflow profile with a peak temperature of no more than 240˚C.
©2006 Bel Fuse Inc.
Specifications subject to change without notice. 11.06
CORPORATE
FAR EAST
EUROPE
Bel Fuse Inc.
206 Van Vorst Street
Jersey City, NJ 07302
Tel 201-432-0463
Fax 201-432-9542
www.belfuse.com
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
Bel Fuse Europe Ltd.
Preston Technology Management Centre
Marsh Lane, Suite G7, Preston
Lancashire, PR1 8UD, U.K.
Tel 44-1772-556601
Fax 44-1772-888366
www.belfuse.com
page 8