GE Industrial Solutions EBVW020A0B User Manual

GE
Data Sheet
EBVW020A0B Barracuda* Series; DC-DC Converter Power Modules
Applications
Distributed power architectures Intermediate bus voltage applications Servers and storage applications Networking equipment including Power over Ethernet
(PoE)
Fan assemblies other systems requiring a tightly
regulated output voltage
Options
Negative Remote On/Off logic (1=option code, factory
preferred)
Auto-restart after fault shutdown (4=option code,
factory preferred)
Remote Sense and Output Voltage Trim (9=option code) Base plate option (-H=option code) Passive Droop Load Sharing (-P=option code)
Description
The EBVW020A0B series of dc-dc converters are a new generation of DC/DC power modules designed to support 9.6 -12Vdc intermediate bus applications where multiple low voltages are subsequently generated using point of load (POL) converters, as well as other application requiring a tightly regulated output voltage. The EBVW020A0B series operate from an input voltage range of 36 to 75V
from output voltages of 12.1V
synchronous rectification technology, and innovative packaging techniques to achieve efficiency reaching 95.4% peak at 12V output. This leads to lower power dissipations such that for many applications a heat sink is not required. Standard features include on/off control, output overcurrent and over voltage protection, over temperature protection, input under and over voltage lockout. Optional features include output voltage remote sense and trim from 6.0V and base plate for heat sink or cold wall applications.
The output is fully isolated from the input, allowing versatile polarity configurations and grounding connections. Built-in filtering for both input and output minimizes the need for external filtering.
* Trademark of General Electric Company # UL is a registered trademark of Underwriters Laboratories, Inc. † CSA is a registered trademark of Canadian Standards Association. ‡ VDE is a trademark of Verband Deutscher Elektrotechniker e.V.
§ This product is intended for integration into end-user equipment . All of the required procedures of end-use equipment should be followed. ¤ IEEE and 802 are registered trademarks of the Institute of Electrical and Electronics Engineers, Incorporated. ** ISO is a registered trademark of the International Organization of Standards.
, and provide up to 20A output current at output voltages from 6.0Vdc to 12.0Vdc, and 240W output power
dc
to 13.2Vdc in a DOSA standard eighth brick. The converter incorporates digital control,
dc
Features
Compliant to RoHS EU Directive 2011/65/EC (-Z versions) Compliant to REACH Directive (EC) No 1907/2006 Compatible with reflow pin/paste soldering process High and flat efficiency profile – 95.4% at 12V
90% output
Wide Input voltage range: 36-75VDelivers up to 20A
output current
dc
Output Voltage adjust: 6.0V
dc
to 13.2Vdc
dc
Tightly regulated output voltage Low output ripple and noise No reverse current during prebias start-up or shut-down Industry standard, DOSA compliant, Eight brick:
58.4 mm x 22.8 mm x 11.3 mm (2.30 in x 0.90 in x 0.44 in) Constant switching frequency
Positive Remote On/Off logic Output over current/voltage protection Over temperature protection Wide operating temperature range (-40°C to 85°C) CAN/CSA† C22.2 No. 60950-1-07, 2nd Edition + A1:2011 (MOD),
ANSI/UL
#
60950-1-2011, IEC 60950-1 (2nd edition); am1, and
VDE‡ (EN60950-1, 2nd Ed.) Licensed
§
CE mark 2006/96/EC directivesMeets the voltage and current requirements for ETSI 300-132-
2 and complies with and licensed for Basic insulation rating per EN60950-1
2250 Vdc Isolation tested in compliance with IEEE 802.3¤ PoE
standards
ISO** 9001 and ISO14001 certified manufacturing facilities
to 13.2Vdc, passive droop paralleling,
dc
, 55% load to
dc
dc
July 22, 2013 ©2012 General Electric Company. All rights reserved. Page 1
GE
Data Sheet
EBVW020A0B Barracuda Series; DC-DC Converter Power Modules
36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the Data Sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability.
Parameter Device Symbol Min Max Unit
Input Voltage*
Continuous V
Operating transient 100mS 100 Vdc Operating Input transient slew rate, 50VIN to 75VIN
(Output may exceed regulation limits, no protective shutdowns shall activate, C
Non- operating continuous V
Operating Ambient Temperature All T
(See Thermal Considerations section)
Storage Temperature All T
I/O Isolation Voltage (100% factory Hi-Pot tested) All
* Input over voltage protection will shutdown the output voltage, when the input voltage exceeds threshold level.
=220μF to C
O
O, max
)
- - 10 V/µs
IN
IN
A
stg
-0.3 75 Vdc
80 100 Vdc
-40 85 °C
-55 125 °C
2250 Vdc
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions.
Parameter Device Symbol Min Typ Max Unit
Operating Input Voltage VIN 36 48 75 Vdc
Maximum Input Current (VIN=0V to 75V, IO=I
Input No Load Current
(VIN = V
IN, nom
Input Stand-by Current
(VIN = V
IN, nom
External Input Capacitance All 100 - - μF
Inrush Transient All I2t - - 1 A2s
Input Terminal Ripple Current (Measured at module input pin with maximum specified input
capacitance and 500uH inductance between voltage source and input capacitance C I
)
Omax
Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 12μH source impedance; V Figure 12)
Input Ripple Rejection (120Hz) All - 50 - dB
)
O, max
, IO = 0, module enabled)
, module disabled)
=220uF, 5Hz to 20MHz, VIN= 48V, IO=
IN
= 48V, IO= I
IN
Omax
; see
All I
All I
All - 900 - mA
All - 24 - mA
I
IN,max
IN,No load
IN,stand-by
CAUTION: This power module is not internally fused. An input line fuse must always be used.
This power module can be used in a wide variety of applications, ranging from simple standalone operation to an integrated part of sophisticated power architecture. To preserve maximum flexibility, internal fusing is not included, however, to achieve maximum safety and system protection, always use an input line fuse. The safety agencies require a fast-acting fuse with a maximum rating of 15 A (see Safety Considerations section). Based on the information provided in this Data Sheet on inrush energy and maximum dc input current, the same type of fuse with a lower rating can be used. Refer to the fuse manufacturer’s Data Sheet for further information.
- - 7 Adc
50 mA
25 mA
rms
p-p
July 22, 2013 ©2012 General Electric Company. All rights reserved. Page 2
GE
temperature conditions until end of
e)
Data Sheet
EBVW020A0B Barracuda Series; DC-DC Converter Power Modules
36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output
Electrical Specifications
Parameter Device Symbol Min Typ Max Unit
Output Voltage Set-point (V Output Voltage (Over all operating input voltage(40V to 75V), resistive load, and
Output Voltage (VIN=36V, TA = 25ºC) All V
Output Regulation (V
Output Ripple and Noise on nominal output
External Output Capacitance All C
Output Current All I
Output Current Limit Inception All I
Efficiency (VIN=V
IO= 100% I
IO= 55% - 90% I
Switching Frequency (primary MOSFETs) (Output Ripple 2X switching frequency)
Dynamic Load Response
, IO=10A, TA =25°C)
IN=VIN,nom
Line (VIN=V
Load (IO=I Line (VIN=V Load (IO=I
IN, min
O, min
IN, min
O, min
to I
to I
Temperature (TA = -40ºC to +85ºC) All
(VIN=V
IN, nom
and IO=I 10 μF aluminum and 220μF polymer capacitor across the load.)
RMS (5Hz to 20MHz bandwidth) All
Peak-to-Peak (5Hz to 20MHz bandwidth) All
IN, nom
All η 95.2 %
O, max
O, max
(dIo/dt=1A/10s; Vin=Vin,nom; TA=25°C; tested with a 10 μF ceramic and 1x 470μF polymer capacitor across the load.)
(continued)
All V
All w/o -P V
lif
=40V)
IN, min
to V
) All w/o -P
IN, max
) All w/o -P
O, max
to V
) -P Option
IN, max
), Intentional Droop -P Option 0.50 Vdc
O, max
to I
O, min
, tested with a 1.0 μF ceramic,
O, max
-P Option V
O, set
O
O
O
O
o
O, lim
, VO= V
=25°C)
O,set, TA
All η 95.4 %
Load Change from Io= 50% to 75% of Io,max:
Peak Deviation
Settling Time (Vo<10% peak deviation)
Load Change from Io= 75% to 50% of Io,max:
Peak Deviation
Settling Time (Vo<10% peak deviation)
f
All
sw
V
pk
ts
V
pk
ts
11.97 12.00 12.03 V
11.76
11.63
10.8
  
 
220
  
0.2
0.2
0.5
2
70
200
12.24 V
12.37 V
  
 
% V
% V % V
% V
mV
mV
10,000 μF
0 20 Adc
23
150 kHz
__
__ __
750 800
750 800
__
__
mV
mV
V
A
s
s
dc
dc
dc
dc
O, set
O, set
O, set
O, set
rms
pk-pk
dc
pk
pk
Isolation Specifications
Parameter Symbol Min Typ Max Unit
Isolation Capacitance C
Isolation Resistance R
General Specifications
Parameter Device Symbol Typ Unit
Calculated Reliability Based upon Telcordia SR-332 Issue 2:
I, Case 1, (I
Method confidence
Weight – Open Frame 29.5 (1.04) g (oz.)
Weight – with Baseplate option 39.0 (1.38) g (oz.)
July 22, 2013 ©2012 General Electric Company. All rights reserved. Page 3
iso
iso
10
1000
pF
M
All MTBF 4,169,213 Hours
=80%I
O
, TA=40°C, Airflow = 200 lfm), 90%
O, max
All FIT 239.9
10
9
/Hour
s
GE
Data Sheet
EBVW020A0B Barracuda Series; DC-DC Converter Power Modules
36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions for additional information.
Parameter Device Symbol Min Typ Max Unit
Remote On/Off Signal Interface
(VIN=V
Negative Logic: device code suffix “1” Logic Low = module On, Logic High = module Off
Positive Logic: No device code suffix required Logic Low = module Off, Logic High = module On
Logic Low Specification
On/Off Thresholds:
Remote On/Off Current – Logic Low All I
Turn-on Delay and Rise Time (IO=I
T with Remote On/Off set to On (Enable with Vin); or operation of Remote On/Off from Off to On with Vin already applied for at least 150 milli-seconds (Enable with on/off). * Increased T
Load Sharing Current Balance (difference in output current across all modules with outputs in parallel, no load to full load)
Prebias Output Load Performance: Back Bias current sunk by output during start-up Back Bias current sunk by output during shut-down
Remote Sense Range
Output Voltage Adjustment range
Output Overvoltage Protection All V
Overtemperature Protection
(See Feature Descriptions)
Input Undervoltage Lockout
Input Overvoltage Lockout
to V
IN, min
, Signal referenced to V
IN, max
terminal)
IN-
Logic Low Voltage All V
Logic High Voltage – (Typ = Open Collector) All V
Logic High maximum allowable leakage current (V
= 2.0V)
on/off
All I
Maximum voltage allowed on On/Off pin All V
)
O, max
=Time until VO = 10% of V
delay
due to startup for parallel modules.
delay
T
=Time for VO to rise from 10% to 90% of V
rise
>5000uF, IO must be < 50% I * Increased T
when Vo exists at startup for parallel
rise
from either application of Vin
O,set
during T
O, max
modules.
All w/o -P
All w/o-P
w/ -P
w/ -P
, For C
O,set
.
rise
O
All w/o -P T
w/ -P T
T
delay, Enable with
T
delay, Enable with
T
delay, Enable wit h
T
delay, Enable with
-P Option I
All
All w/ ”9”
option
All w/ ”9”
option
All T
Turn-on Threshold
Turn-off Threshold
Turn-off Threshold
Turn-on Threshold
280
-0.3
2.0
on/off
on/off
on/off
on/off
on/off
Vin
on/off
on/off
rise
rise
diff
 
V
Sense
V
6.0
O, set
14.5
O,limit
ref
32 33.5
76 79
  
310 μA
0.8 Vdc
14.5 Vdc
10 μA
14.5 Vdc
160 ms
40 ms
180* ms
40* ms
40 ms
300* ms
3 A
 
50 50
0.5 Vdc
140
13.2 Vdc
17.0 Vdc
35 36 V
85 86 V
mA mA
°C
Vdc
Vdc
dc
dc
July 22, 2013 ©2012 General Electric Company. All rights reserved. Page 4
GE
OUTPU
T VOLTAGE
INPUT VOLTAGE
Data Sheet
EBVW020A0B Barracuda Series; DC-DC Converter Power Modules
36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output
Characteristic Curves
The following figures provide typical characteristics for the EBVW020A0B (12V, 20A) at 25ºC. The figures are identical for either positive or negative Remote On/Off logic.
(A)
i
INPUT CURRENT, I
INPUT VOLTAGE, VO (V) TIME, t (20 ms/div)
Figure 1. Typical Input Characteristic at Room Temperature.
(V) (2V/div)
ON/OFF
(V) (5V/div) V
O
V
OUTPUT VOLTAGE On/Off VOLTAGE
Figure 4. Typical Start-Up Using Remote On/Off with Vin applied, negative logic version shown.
EFFCIENCY, η (%)
OUTPUT CURRENT, IO (A) TIME, t (1 ms/div)
Figure 2. Typical Converter Efficiency Vs. Output current at Room Temperature.
(V) (20V/div)
IN
(V) (5V/div) V
O
V
TIME, t (40 ms/div) TIME, t (1 ms/div)
Figure 3. Typical Start-Up Using Vin with Remote On/Off enabled, negative logic version shown.
(V) (500mV/div)
O
(A) (5A/div) V
O
I
OUTPUT CURRENT OUTPUT VOLTAGE
Figure 5. Typical Transient Response to Step change in Load from 25% to 50% to 25% of Full Load at 48 Vdc Input and 470uF Polymer.
(V) (500mV/div)
O
(A) (5A/div) V
O
OUTPUT CURRENT OUTPUT VOLTAGE
I
Figure 6. Typical Transient Response to Step Change in Load from 50% to 75% to 50% of Full Load at 48 Vdc Input and 470uF Polymer.
July 22, 2013 ©2012 General Electric Company. All rights reserved. Page 5
GE
OUTPUT VOLTAGE,
Data Sheet
EBVW020A0B Barracuda Series; DC-DC Converter Power Modules
36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output
Characteristic Curves
(continued)
(V)
O
OUTPUT VOLTAGE, V
INPUT VOLTAGE, Vin (V) INPUT VOLTAGE, Vin (V)
Figure 7. Typical Output Voltage Regulation vs. Input Voltage at Room Temperature.
(V)
O
OUTPUT VOLTAGE, V
OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A)
Figure 8. Typical Output Voltage Regulation vs. Output Current at Room Temperature.
(V)
O
OUTPUT VOLTAGE, V
Figure 10. Typical Output Voltage Regulation vs. Input Voltage for the –P Version at Room Temperature.
(V)
O
OUTPUT VOLTAGE, V
Figure 11. Typical Output Voltage Regulation vs. Output Current for the –P Version at Room Temperature.
36 Vin
48 Vin
(V) (50mV/div)
O
V
75 Vin
TIME, t (2s/div)
Figure 9. Typical Output Ripple and Noise at Room Temperature I
o
= I
and and C
o,max
OMin
.
July 22, 2013 ©2012 General Electric Company. All rights reserved. Page 6
GE
Data Sheet
EBVW020A0B Barracuda Series; DC-DC Converter Power Modules
36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output
Test Configurations
Note: Measure input reflected-ripple current with a simulated source inductance (LTEST) of 12 µH. Capacitor CS offsets possible battery impedance. Measure current as shown above.
Figure 12. Input Reflected Ripple Current Test Setup.
Note: Use a 1.0 µF ceramic capacitor and a 10 µF aluminum or tantalum capacitor. Scope measurement should be made using a BNC socket. Position the load between 51 mm and 76 mm (2 in. and 3 in.) from the module.
Figure 13. Output Ripple and Noise Test Setup.
CONTA CT AND
DISTRIBUTION LOSSES
O1
V
I
I
SUPPL Y
V
CONTA CT
RESISTANCE
Note: All measurements are taken at the module terminals. When socketing, place Kelvin connections at module terminals to avoid measurement errors due to socket contact resistance.
Figure 14. Output Voltage and Efficiency Test Setup.
V
I
(+)
I
(–)
V
I
O
LOAD
O2
Design Considerations
Input Source Impedance
The power module should be connected to a low ac-impedance source. A highly inductive source impedance can affect the stability of the power module. For the test configuration in Figure 12, a 220μF electrolytic capacitor, C 100kHz), mounted close to the power module helps ensure the stability of the unit. If the module is subjected to rapid on/off cycles, a 330μF input capacitor is required. Consult the factory for further application guidelines.
, (ESR<0.7 at
in
Safety Considerations
For safety-agency approval of the system in which the power module is used, the power module must be installed in compliance with the spacing and separation requirements of the end-use safety agency standard, i.e., UL60950-1 2 CSA C22.2 No. 60950-1 2
nd
Ed., and VDE0805-1 EN60950-1 2nd
Ed. If the input source is non-SELV (ELV or a hazardous voltage
greater than 60 Vdc and less than or equal to 75Vdc), for the module’s output to be considered as meeting the requirements for safety extra-low voltage (SELV), all of the following must be true:
The input source is to be provided with reinforced
insulation from any other hazardous voltages, including the ac mains.
One V
pin and one V
IN
pin are to be grounded, or both
OUT
the input and output pins are to be kept floating.
The input pins of the module are not operator accessible. Another SELV reliability test is conducted on the whole
system (combination of supply source and subject module), as required by the safety agencies, to verify that under a single fault, hazardous voltages do not appear at the module’s output.
Note: Do not ground either of the input pins of the module
without grounding one of the output pins. This may allow a non-SELV voltage to appear between the output pins and ground.
The power module has safety extra-low voltage (SELV) outputs when all inputs are SELV.
The input to these units is to be provided with a maximum 15 A fast-acting (or time-delay) fuse in the unearthed lead.
The power module has internally generated voltages exceeding safety extra-low voltage. Consideration should be taken to restrict operator accessibility.
nd
Ed.,
July 22, 2013 ©2012 General Electric Company. All rights reserved. Page 7
GE
Data Sheet
EBVW020A0B Barracuda Series; DC-DC Converter Power Modules
36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output
Feature Descriptions
Overcurrent Protection
To provide protection in a fault output overload condition, the module is equipped with internal current-limiting circuitry and can endure current limiting continuously. If the overcurrent condition causes the output voltage to fall greater than 4.0V from V The overcurrent latch is reset by either cycling the input power or by toggling the on/off pin for one second. If the output overload condition still exists when the module restarts, it will shut down again. This operation will continue indefinitely until the overcurrent condition is corrected.
A factory configured auto-restart option (with overcurrent and overvoltage auto-restart managed as a group) is also available. An auto-restart feature continually attempts to restore the operation until fault condition is cleared.
Remote On/Off
The module contains a standard on/off control circuit reference to the V options are available. Positive logic remote on/off turns the module on during a logic-high voltage on the ON/OFF pin, and off during a logic low. Negative logic remote on/off turns the module off during a logic high, and on during a logic low. Negative logic, device code suffix "1," is the factory-preferred configuration. The On/Off circuit is powered from an internal bias supply, derived from the input voltage terminals. To turn the power module on and off, the user must supply a switch to control the voltage between the On/Off terminal and the V terminal (V equivalent (see Figure 15). A logic low is V The typical I Terminal=0.3V) is 147µA. The switch should maintain a logic-low voltage while sinking 310µA. During a logic high, the maximum V allowable leakage current of the switch at V If using an external voltage source, the maximum voltage V on the pin is 14.5V with respect to the VIN(-) terminal.
If not using the remote on/off feature, perform one of the following to turn the unit on:
For negative logic, short ON/OFF pin to V For positive logic: leave ON/OFF pin open.
Figure 15. Remote On/Off Implementation.
Output Overvoltage Protection
The module contains circuitry to detect and respond to output overvoltage conditions. If the overvoltage condition causes the output voltage to rise above the limit in the Specifications Table, the module will shut down and remain latched off. The
July 22, 2013 ©2012 General Electric Company. All rights reserved. Page 8
, the module will shut down and remain latched off.
o,set
(-) terminal. Two factory configured remote on/off logic
IN
). The switch can be an open collector or
on/off
during a logic low (Vin=48V, On/Off
on/off
generated by the power module is 8.2V. The maximum
on/off
= -0.3V to 0.8V.
on/off
= 2.0V is 10µA.
on/off
(-).
IN
IN
overvoltage latch is reset by either cycling the input power, or by toggling the on/off pin for one second. If the output overvoltage condition still exists when the module restarts, it will shut down again. This operation will continue indefinitely until the overvoltage condition is corrected.
A factory configured auto-restart option (with overcurrent and overvoltage auto-restart managed as a group) is also available. An auto-restart feature continually attempts to restore the operation until fault condition is cleared.
Overtemperature Protection
These modules feature an overtemperature protection circuit to safeguard against thermal damage. The circuit shuts down the module when the maximum device reference temperature is exceeded. The module will automatically restart once the reference temperature cools by ~25°C.
Input Under/Over voltage Lockout
At input voltages above or below the input under/over voltage lockout limits, module operation is disabled. The module will begin to operate when the input voltage level changes to within the under and overvoltage lockout limits.
Load Sharing
For higher power requirements, the EBVW020A0 power module offers an optional feature for parallel operation (-P Option code). This feature provides a precise forced output voltage load regulation droop characteristic. The output set point and droop slope are factory calibrated to insure optimum matching of multiple modules’ load regulation characteristics. To implement
(-)
load sharing, the following requirements should be followed:
The V
(+) and V
OUT
(-) pins of all parallel modules must be
OUT
connected together. Balance the trace resistance for each module’s path to the output power planes, to insure best load sharing and operating temperature balance.
must remain between 40Vdc and 75Vdc for droop sharing
V
IN
to be functional.
It is permissible to use a common Remote On/Off signal to
on/off
start all modules in parallel.
These modules contain means to block reverse current flow
upon start-up, when output voltage is present from other parallel modules, thus eliminating the requirement for external output ORing devices. Modules with the –P option will self determine the presence of voltage on the output from other operating modules, and automatically increase its Turn On delay, T Table.
, as specified in the Feature Specifications
delay
When parallel modules startup into a pre-biased output, e.g.
partially discharged output capacitance, the T
rise
is automatically increased, as specified in the Feature Specifications Table, to insure graceful startup.
Insure that the load is <50% I
(for a single module) until
O,MAX
all parallel modules have started (load full start > module
time max + T
T
delay
rise
time).
If fault tolerance is desired in parallel applications, output
ORing devices should be used to prevent a single module failure from collapsing the load bus.
GE
E
Data Sheet
EBVW020A0B Barracuda Series; DC-DC Converter Power Modules
36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output
Feature Descriptions (continued)
Remote Sense (“9” Option Code)
Remote sense minimizes the effects of distribution losses by regulating the voltage at the remote-sense connections (See Figure 16). The voltage between the remote-sense pins and the output terminals must not exceed the output voltage sense range given in the Feature Specifications table:
(+) – VO(–)] – [SENSE(+) – SENSE(–)] 0.5 V
[V
O
Although the output voltage can be increased by both the remote sense and by the trim, the maximum increase for the output voltage is not the sum of both. The maximum increase is the larger of either the remote sense or the trim.
The amount of power delivered by the module is defined as the voltage at the output terminals multiplied by the output current. When using remote sense and trim, the output voltage of the module can be increased, which at the same output current would increase the power output of the module. Care should be taken to ensure that the maximum output power of the module remains at or below the maximum rated power (Maximum rated power = Vo,set x Io,max).
SUPPLY
I
I
CONTACT
RESISTANCE
Figure 16. Circuit Configuration for remote sense.
Trim, Output Voltage Programming
Trimming allows the output voltage set point to be increased or decreased; this is accomplished by connecting an external resistor between the TRIM pin and either the V ) pin.
VO(+)
EBVW020A0B
T/C1
VO(-)
Figure 17. Circuit Configuration to Trim Output Voltage.
Connecting an external resistor (R and the Vo(-) (or Sense(-)) pin decreases the output voltage set point. To maintain set point accuracy, the trim resistor tolerance should be ±1.0%.
The following equation determines the required external resistor value to obtain a percentage output voltage change of %
V
I(+)
V
I(-)
SENSE(+)
SENSE(–)
VO(+)
V
O(–)
IO
LOAD
CONTACT AND
DISTRIBUTION LOSS
(+) pin or the VO(-
O
R
trim-up
LOAD
R
trim-down
) between the T/C1 pin
trim-down
511
R
Where
downtrim
%
 
 
For example, to trim-down the output voltage of the module by 20% to 9.6V, Rtrim-down is calculated as follows:
downtrim
Connecting an external resistor (R and the V
(+) (or Sense (+)) pin increases the output voltage set
O
point. The following equations determine the required external resistor value to obtain a percentage output voltage change of %:
R
uptrim
 
Where
 
 
For example, to trim-up the output voltage of the module by 5% to 12.6V, R
uptrim
is calculated is as follows:
trim-up
 
The voltage between the Vo(+) and Vo(–) terminals must not exceed the minimum output overvoltage protection value shown in the Feature Specifications table. This limit includes any increase in voltage due to remote-sense compensation and output voltage set-point adjustment trim.
Although the output voltage can be increased by both the remote sense and by the trim, the maximum increase for the output voltage is not the sum of both. The maximum increase is the larger of either the remote sense or the trim. The amount of power delivered by the module is defined as the voltage at the output terminals multiplied by the output current. When using remote sense and trim, the output voltage of the module can be increased, which at the same output current would increase the power output of the module. Care should be taken to ensure that the maximum output power of the module remains at or below the maximum rated power (Maximum rated power =
x I
O,max
).
V
O,set
Thermal Considerations
The power modules operate in a variety of thermal environments and sufficient cooling should be provided to help ensure reliable operation.
Thermal considerations include ambient temperature, airflow, module power dissipation, and the need for increased reliability. A reduction in the operating temperature of the module will result in an increase in reliability.
 
V
511
20

22.10
 
VV
desiredseto
,
seto
100%
 
20%
 
kkR
3.1522.10
,
) between the T/C1 pin
trim-up
V
,seto
VV
,
setodesired
V
,
seto
5225.1
%)100(11.5
511
5%
511
%
5
 
%225.1
 
100%
 
)5100(0.1211.5

22.10
 
kkR
8.93822.10
July 22, 2013 ©2012 General Electric Company. All rights reserved. Page 9
GE
(
)
Data Sheet
EBVW020A0B Barracuda Series; DC-DC Converter Power Modules
36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output
Feature Descriptions (continued)
The thermal data presented here is based on physical measurements taken in a wind tunnel, using automated thermo-couple instrumentation to monitor key component temperatures: FETs, diodes, control ICs, magnetic cores, ceramic capacitors, opto-isolators, and module pwb conductors, while controlling the ambient airflow rate and temperature. For a given airflow and ambient temperature, the module output power is increased, until one (or more) of the components reaches its maximum derated operating temperature, as defined in IPC-9592. This procedure is then repeated for a different airflow or ambient temperature until a family of module output derating curves is obtained.
Heat-dissipating components are mounted on the top side of the module. Heat is removed by conduction, convection and radiation to the surrounding environment. Proper cooling can be verified by measuring the thermal reference (TH
). Peak temperature (THx) occurs at the position indicated in
x
Figure 18 and 19. For reliable operation this temperature should not exceed the listed temperature threshold.
temperature
Figure 19. Location of the thermal reference temperature TH for Base Plate module. Do not exceed 110 °C.
The output power of the module should not exceed the rated power for the module as listed in the Ordering Information table.
Although the maximum temperature of the power modules is
, you can limit this temperature to a lower value for
TH
x
extremely high reliability. Please refer to the Application Note “Thermal Characterization
Process For Open-Frame Board-Mounted Power Modules” for a detailed discussion of thermal aspects including maximum device temperatures.
Heat Transfer via Convection
Increased airflow over the module enhances the heat transfer via convection. The thermal derating of figures 20 through 22 show the maximum output current that can be delivered by each module in the indicated orientation without exceeding the maximum TH (T
) for air flows of, Natural Convection, 1 m/s (200 ft./min), 2
A
m/s (400 ft./min).
The use of Figures 20 is shown in the following example:
Example
What is the minimum airflow necessary for a EBVW020A0B operating at V maximum ambient temperature of 70 °C in transverse orientation.
Solution: Given: V Determine required airflow (V) (Use Figure 20): V = 200LFM or greater.
temperature versus local ambient temperature
x
= 48 V, an output current of 14A, and a
I
= 48V, IO = 14A, TA = 70 °C
in
2
A
O
Figure 18. Location of the thermal reference temperature
. Do not exceed 113 °C.
TH
1
OUTPUT CURRENT, I
LOCAL AMBIENT TEMPERATURE, TA (C)
Figure 20. Output Current Derating for the Open Frame EBVW020A0B in the Transverse Orientation; Airflow Direction from Vin(-) to Vin(+); Vin = 48V.
July 22, 2013 ©2012 General Electric Company. All rights reserved. Page 10
GE
Data Sheet
EBVW020A0B Barracuda Series; DC-DC Converter Power Modules
36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output
(A)
O
OUTPUT CURRENT, I
LOCAL AMBIENT TEMPERATURE, TA (C)
Figure 21. Output Current Derating for the Base Plate EBVW020A0Bxx-H in the Transverse Orientation; Airflow Direction from Vin(-) to Vin(+); Vin = 48V.
(A)
O
OUTPUT CURRENT, I
LOCAL AMBIENT TEMPERATURE, TA (C)
Figure 22. Output Current Derating for the Base Plate EBVW020A0Bxx-H and 0.25” heat sink in the Transverse Orientation; Airflow Direction from Vin(-) to Vin(+); Vin = 48V.
Layout Considerations
The EBVW020 power module series are low profile in order to be used in fine pitch system card architectures. As such, component clearance between the bottom of the power module and the mounting board is limited. Avoid placing copper areas on the outer layer directly underneath the power module. Also avoid placing via interconnects underneath the power module.
For additional layout guide-lines, refer to FLT007A0Z Data Sheet.
Through-Hole Lead-Free Soldering Information
The RoHS-compliant, Z version, through-hole products use the SAC (Sn/Ag/Cu) Pb-free solder and RoHS-compliant components. The non-Z version products use lead-tin (Pb/Sn) solder and RoHS-compliant components. Both version modules are designed to be processed through single or dual wave soldering machines. The pins have an RoHS-compliant, pure tin finish that is compatible with both Pb and Pb-free wave soldering processes. A maximum preheat rate of 3C/s is
July 22, 2013 ©2012 General Electric Company. All rights reserved. Page 11
suggested. The wave preheat process should be such that the temperature of the power module board is kept below 210C. For Pb solder, the recommended pot temperature is 260C, while the Pb-free solder pot is 270C max. Not all RoHS­compliant through-hole products can be processed with paste­through-hole Pb or Pb-free reflow process. If additional information is needed, please consult with your GE representative for more details.
Reflow Lead-Free Soldering Information
The RoHS-compliant through-hole products can be processed with the following paste-through-hole Pb or Pb-free reflow process.
Max. sustain temperature : 245C (J-STD-020C Table 4-2: Packaging Thickness>=2.5 Volume > 2000 Peak temperature over 245C is not suggested due to the potential reliability risk of components under continuous high­temperature. Min. sustain duration above 217C : 90 seconds Min. sustain duration above 180C : 150 seconds Max. heat up rate: 3C/sec Max. cool down rate: 4C/sec In compliance with JEDEC J-STD-020C spec for 2 times reflow requirement.
Pb-free Reflow Profile
BMP module will comply with J-STD-020 Rev. C (Moisture/Reflow Sensitivity Classification for Nonhermetic Solid State Surface Mount Devices) for both Pb­free solder profiles and MSL classification procedures. BMP will comply with JEDEC J-STD-020C specification for 3 times reflow requirement. The suggested Pb­free solder paste is Sn/Ag/Cu (SAC). The recommended linear reflow profile using Sn/Ag/Cu solder is shown in Figure 23.
217°C 200°C
150°C
Temp
25°C
Figure 23. Recommended linear reflow profile using Sn/Ag/Cu solder.
MSL Rating
The EBVW020A0BA modules have a MSL rating of 2a.
Storage and Handling
The recommended storage environment and handling procedures for moisture-sensitive surface mount packages is
3
mm
),
Peak Tem p. 240-245°C
Preheat time
100- 150 Sec.
Ramp up
max. 3°C/Sec
Time
Time Limi t ed 90 Sec.
above 217°C
Ramp dow n
max. 4°C/Sec
mm
/
GE
Data Sheet
EBVW020A0B Barracuda Series; DC-DC Converter Power Modules
36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output
detailed in J-STD-033 Rev. A (Handling, Packing, Shipping and Use of Moisture/Reflow Sensitive Surface Mount Devices). Moisture barrier bags (MBB) with desiccant are required for MSL ratings of 2 or greater. These sealed packages should not be broken until time of use. Once the original package is broken, the floor life of the product at conditions of 30°C and 60% relative humidity varies according to the MSL rating (see J-STD­025A). The shelf life for dry packed SMT packages will be a minimum of 12 months from the bag seal date, when stored at the following conditions: < 40° C, < 90% relative humidity.
EMC Considerations
The circuit and plots in Figure 24 shows a suggested configuration to meet the conducted emission limits of
Post Solder Cleaning and Drying Considerations
Post solder cleaning is usually the final circuit-board assembly process prior to electrical board testing. The result of inadequate cleaning and drying can affect both the reliability of a power module and the testability of the finished circuit-board assembly. For guidance on appropriate soldering, cleaning and drying procedures, refer to GE Board Mounted Power Modules: Soldering and Cleaning Application Note (AP01-056EPS).
EN55022 Class B. For further information on designing for EMC compliance, please refer to the FLT007A0 data sheet.
Level [dBµV]
80
70
60
+
x
50
+
40
30
20
10
0
150k 300k 500k 1M 2M 3M 4M 5M 7M 10M 30M
x xMES CE0916111952_fin QP
+ +MES CE0916111952_fin AV
MES CE0916111952_pre PK MES CE0916111952_pre AV
x
+
x
Frequency [Hz]
Figure 24. EMC Considerations.
xx
x
++
+
July 22, 2013 ©2012 General Electric Company. All rights reserved. Page 12
GE
Data Sheet
EBVW020A0B Barracuda Series; DC-DC Converter Power Modules
36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output
Packaging Details
All versions of the EBVW020A0B are supplied as standard in the plastic trays shown in Figure 25. Each tray contains a total of 18 power modules. The trays are self-stacking and each shipping box for the EBVW020A0B module contains 2 full trays plus one empty hold-down tray giving a total number of 36 power modules.
Tray Specification
Material PET (1mm) Max surface resistivity Color Clear Capacity 18 power modules Min order quantity 36 pcs (1 box of 2 full trays
9
-1011/PET
10
+ 1 empty top tray)
Open Frame Module Tray Base Plate Module Tray
Figure 25. EBVW020 Packaging Tray
July 22, 2013 ©2012 General Electric Company. All rights reserved. Page 13
GE
Data Sheet
EBVW020A0B Barracuda Series; DC-DC Converter Power Modules
36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output
Mechanical Outline for EBVW020A0B Through-hole Module
Dimensions are in millimeters and [inches]. Tolerances: x.x mm 0.5 mm [x.xx in. 0.02 in.] (Unless otherwise indicated) x.xx mm 0.25 mm [x.xxx in 0.010 in.]
Top View*
Side View
Top side label includes GE name, product designation and date code.
Bottom View
Pin Function 1 Vi(+) 2 ON/OFF 3 Vi(-) 4 Vo(-) 5† 6† 7† 8 Vo(+)
SENSE(-) TRIM SENSE(+)
*For optional pin lengths, see Table 2, Device Coding Scheme and Options
- Optional Pins, when including “9” Option, See Table 2
July 22, 2013 ©2012 General Electric Company. All rights reserved. Page 14
GE
Data Sheet
EBVW020A0B Barracuda Series; DC-DC Converter Power Modules
36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output
Mechanical Outline for EBVW020A0B–H (Baseplate version) Through-hole Module
Dimensions are in millimeters and [inches]. Tolerances: x.x mm 0.5 mm [x.xx in. 0.02 in.] (Unless otherwise indicated) x.xx mm 0.25 mm [x.xxx in 0.010 in.]
Top View
Side View
Bottom View*
Pin Function 1 Vi(+) 2 ON/OFF 3 Vi(-) 4 Vo(-) 5† 6† 7† 8 Vo(+)
SENSE(-) TRIM SENSE(+)
*For optional pin lengths, see Table 2, Device Coding Scheme and Options
* Bottom side label includes GE name, product designation and date
- Optional Pins, when including “9” Option, See Table 2
July 22, 2013 ©2012 General Electric Company. All rights reserved. Page 15
GE
Data Sheet
EBVW020A0B Barracuda Series; DC-DC Converter Power Modules
36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output
Recommended Pad Layouts
Dimensions are in millimeters and (inches). Tolerances: x.x mm 0.5 mm ( x.xx in. 0.02 in.) [unless otherwise indicated] x.xx mm 0.25 mm ( x.xxx in 0.010 in.)
Through-Hole Modules
Pin
Number
1* VIN(+) 2* ON/OFF 3* VIN(-) 4* VOUT(-)
5† 6† 7†
8* VOUT(+)
- Optional Pins
See Table 2
Hole and Pad diameter recommendations:
Pin Number Hole Dia mm [in] Pad Dia mm [in] 1, 2, 3, 5, 6, 7 1.6 [.063] 2.1 [.083] 4, 8 2.2 [.087] 3.2 [.126]
Pin
Name
SENSE(-)
TRIM
SENSE(+)
July 22, 2013 ©2012 General Electric Company. All rights reserved. Page 16
GE
Data Sheet
EBVW020A0B Barracuda Series; DC-DC Converter Power Modules
36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output
Ordering Information
Please contact your GE Sales Representative for pricing, availability and optional features.
Table 1. Device Codes
Product codes Input Voltage Output Voltage Output Current Efficiency Connector Type Comcodes
EBVW020A0B1Z EBVW020A0B41Z EBVW020A0B64Z EBVW020A0B641Z EBVW020A0B841Z EBVW020A0B941Z EBVW020A0B984Z EBVW020A0B9641Z EBVW020A0B41-HZ EBVW020A0B64-HZ EBVW020A0B641-HZ EBVW020A0B9641-HZ EBVW020A0B41-PHZ
48V (3675Vdc) 48V (3675Vdc) 48V (3675Vdc) 48V (3675Vdc) 48V (3675Vdc) 48V (3675Vdc) 48V (3675Vdc) 48V (3675Vdc) 48V (3675Vdc) 48V (3675Vdc) 48V (3675Vdc) 48V (3675Vdc) 48V (3675Vdc)
12V 20A 95.2% Through hole 150019309 12V 20A 95.2% Through hole 12V 20A 95.2% Through hole 150021139 12V 20A 95.2% Through hole 12V 20A 95.2% Through hole 150022307 12V 20A 95.2% Through hole 12V 20A 95.2% Through hole 150022795 12V 20A 95.2% Through hole 150026416 12V 20A 95.2% Through hole 12V 20A 95.2% Through hole 150021143 12V 20A 95.2% Through hole 150020433 12V 20A 95.2% Through hole 12V 20A 95.2% Through hole
CC10916750
CC10917246
CC10917236
CC10916751
CC10917231 CC10917233
July 22, 2013 ©2012 General Electric Company. All rights reserved. Page 17
GE
Data Sheet
EBVW020A0B Barracuda Series; DC-DC Converter Power Modules
36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output
Table 2. Device Options
Contact Us
For more information, call us at
USA/Canada:
+1 888 546 3243, or +1 972 244 9288
Asia-Pacific:
+86.021.54279977*808
Europe, Middle-East and Africa:
+49.89.878067-280
India: +91.80.28411633
July 22, 2013 ©2012 General Electric Company. All rights reserved. Version 1.21
www.ge.com/powerelectronics
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