Galaxy GLDW34V03PMR-003-123 High-efficiency dc/dc converter 48v input, 18v to 34vdc output, 3a output Datasheet

DORADO HV
High-efficiency DC/DC Converter
48V Input, 18V to 34VDC Output, 3A Output
The Dorado HV is also available with an optional
low profile heatsink for improved thermal
performance.
Suitable for Fan Motor Control
Industry Standard Quarter Brick
Pinout and Footprint
Typical Efficiency: 87% at 3A, 34V
Droop Feature Allows Current Sharing
Very Low Common-mode Noise for
a Commercial DC/DC Converter
Two-stage Input Filter
Constant Switching Frequency
Remote Sense
Single Board Design
Optional Low Profile Heatsink for
Improved Thermal Performance
Header with M3 Metal Inserts for
Mechanical Connection to PCB
Two Year Warranty
Control Functions
Compatible with Fan Turn-on Requirements
Designed to be Stable with High Capacitance Load
Uses Innovative Control and Power Topology
for Lower Parts Count
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: ±0.2%
Load Regulation: +2% no load; -2% full load*
Line Regulation: ±0.2%
Low Output Ripple
Output Trim
ISO 9001 CERTIFIED ORGANISATION
* Varies with setpoint and trim method.
®
Dorado HV, Page 1
WWW.GALAXYPWR.COM
Part No. 01-001 Rev. 4.0–051404
General Specifications
VIN = 48VDC, TA@25°C, 300 LFM Airflow, VOUT = 34V, IOUT = 1.5A. 68µF electrolytic capacitor across output pins.
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
Input Capacitance
Input Hysteresis, Low Line
36
48
75
4
VDC
A
µF
VDC
34
103
30
3
5.5
400
1
39
VDC
%VNOM
mV RMS
A
A
mS
%VOUT
VDC
2
2
Output Characteristics
Output Voltage/Trim Range
Regulation Over Line, Load & Temperature
Voltage Ripple
Current Range
Current Limit Inception*
Turn-on Time to 98%Vnom
Output Overshoot at Turn-on
Overvoltage Protection
17
97
0
3.25
37
Isolation
Isolation Test Voltage, Input/Output (Basic)
Isolation Resistance
2000
10
Features
Overtemperature Protection, Thermal Sensor**
Switching Frequency, Fixed
VDC
MΩ
117
333
°C
kHz
* Current limit inception is output voltage dependent. See Current Limit Graph on page 5.
** PCB less than 130°C
General Specifications
Operating Temperature
Storage Temperature
Relative Humidity
Approvals and Standards
-40°C to +100°C
-55°C to +125°C
10% to 95% RH,
Non-condensing
Vibration
2 to 9Hz, 3mm disp.,
9 to 200Hz 1g
Material Flammability
UL V-0
Weight
35 grams
MTBF
Telcordia (Bellcore)
1,600,000 hours
Dorado HV, Page 2
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.
WWW.GALAXYPWR.COM
Part No. 01-001-C Rev. 4.0–051404
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
Overvoltage Lockout
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.
Input Current
Valid Input Voltage Range:
Voltage
Rising
Voltage
Falling
75
77
78
79
80
Input Voltage (V)
Undervoltage Lockout
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 4.0 V with respect to the –INPUT 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
100 kΩ to +5V.
Input Current
ON/OFF Logic Option:
Dorado HV, Page 3
76
Voltage
Rising
Voltage
Falling
30
WWW.GALAXYPWR.COM
32
34
36
38
40
Input Voltage (V)
Part No. 01-001 Rev. 4.0–051404
Application Notes
Output Over Voltage Protection:
External Output Trimming
The output voltage is monitored by a redundant
secondary-side circuit. If the output voltage exceeds the
over-voltage specification, the microprocessor will
restart every 2 seconds and limit voltage with a separate
reference circuit. This advanced feature prevents the
converter from damaging the load if there is a converter
failure or application error.
Latching is available as an option.
Resistor
Trim
RTRIM
– Sense
Resistor across Trim Pin
Over Current Protection:
(Droop Percentage = 3%)
If overcurrent lasts more than 3 seconds the converter
will shut down and try to restart every 10 seconds until
the fault is removed.
Latching is available as an option.
Thermal Shutdown:
The printed circuit board temperature is measured
using a semiconductor sensor. If the maximum rated
temperature is exceeded, the converter is turned off. It
will then restart every 2 seconds.
Latching is available as an option.
Output Voltage (V)
40
35
30
Vout Nom (0A)
Vout Nom (3A)
25
20
15
0
10
100
1000
Trim Pin to -Sense Resistance (kOhm)
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 1V. A negative sense
lead is connected internally.
Safety:
An external input fuse must always be used to meet
these safety requirements.
Dorado HV, Page 4
WWW.GALAXYPWR.COM
Part No. 01-001-C Rev. 4.0–051404
Dorado HV Operation
Note: 68µF electrolytic capacitor across output pins for all graphs.
Efficiency
Power Dissipation Vs Line/Load
18
90
16
Power Dissipation (W)
92
Efficiency (%)
88
86
36V Vin
48V Vin
75V Vin
84
82
80
78
76
74
14
12
36V Vin
48V Vin
75V Vin
10
8
6
4
2
0
0
1.0
0.5
2.0
1.5
3.0
2.5
0.5
0
2.0
25
.
3.0
Output Current (A)
Current Limit Vs. Line/Trim Voltage
Setpoint Vs Line/Load
5.4
35.5
5.2
35.0
5.0
4.8
Output Voltage (V)
Current Limit (A)
1.5
1.0
Output Current (A)
75V
60V
48V
36V
4.6
4.4
4.2
4.0
3.8
18
20
22
24
26
28
30
32
34.5
36V Vin
48V Vin
75V Vin
34.0
33.5
33.0
32.5
34
0.5
0
1.0
Trimmed Output Voltage (V)
1.5
2.0
25
.
3.0
Output Current (A)
Bode Plot
A T/R (dB)
A MAX
B MAX
B:
50.00
180.0
A/DIV
B/DIV
10.00 dB
36.00 deg
dB
deg
MKR
GAIN
PHASE
START
STOP
10.964.782
4.31822
107.062
Hz
mdB
deg
100.000
100 000.000
Hz
Hz
Startup
Voltage Ripple
[
]
T
T
2
VOUT
1
Ch1 10.0V
Dorado HV, Page 5
WWW.GALAXYPWR.COM
Ch2
5.00 V
M 40.0ms A
Ch1
2.70V
Part No. 01-001 Rev. 4.0–051404
PACKAGE DETAIL
2.28
MOUNTING INSERT
CONNECTED TO CASE PIN
1.030
1.030
1.45
PIN 1 .815
A
PIN 2 .515
A
.815
.665
.515
.365
.215
PIN 3 .215
0
0
.210
PIN 8
PIN 7
PIN 6
PIN 5
PIN 4
BOTTOM VIEW
MOUNTING INSERT
M3 X 0.5 4 PLACES
.210
0
1.860
.070
Function
Pin Dia. (in.)
1
2
3
4
5
6
7
8
– 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
* Connected to –Output internally.
2.000
PIN TO PIN
.20
0
.50
(opt. L = .465)
.010 ±0.008
.50
SIDE VIEW
Ordering Information
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
4. "A" = 0.040" dia. Pins
5. "B" = 0.060" dia. Pins
Heatsink Part Numbers
Standard Model
Number
Output
Voltage
Max
Current
GLDW34V03
34V
3A
Option Codes:
Pin
Efficiency
Half Load Full Load
87%
89%
GLDW34V03 P S R –00X –123
Part No.
Options:
Positive Logic Version
Optional Pin Lengths
E = 0.18" (±0.01")
M = 0.145" (±0.01")
S = 0.12" (±0.01")
Heatsink Ready
Heatsink
– 001 = 0.25"
– 002 = 0.50"
– 003 = 1.00"
– 004 = 0.13"
Latched
OVP and OTP latch immediately,
OCP latches after 3 seconds
Part
Number
Height
Typical Thermal Performance
Natural Convection
Forced Convection
Power Dissipation*
Thermal Resistance**
001
0.25"
5W
5.8°C/W
002
003
004
0.50"
1.00"
0.13"
7W
11W
TBD
3.2°C/W
2.0°C/W
TBD
*@ 60°C rise heatsink to ambient
** @ 300'/min.
Example Part No:
GLDW34V03ER–123
48V Input
34V@3A Output
Negative Logic
0.18" Pin Length
Heatsink Ready
Latched OVP, OTP and OCP.
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: [email protected]
website: http://www.galaxypwr.com
© Copyright 2004 Galaxy Power. Specifications subject to change without notice.
Dorado HV, Page 6
WWW.GALAXYPWR.COM
Part No. 01-001-C Rev. 4.0–051404
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