Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

FARM2EK1 Datasheet(PDF) 8 Page - Vicor Corporation

Part # FARM2EK1
Description  Autoranging Rectifier Module Up to 1000 Watts
Download  11 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  VICOR [Vicor Corporation]
Direct Link  http://www.vicorpower.com
Logo VICOR - Vicor Corporation

FARM2EK1 Datasheet(HTML) 8 Page - Vicor Corporation

Back Button FARM2EK1 Datasheet HTML 3Page - Vicor Corporation FARM2EK1 Datasheet HTML 4Page - Vicor Corporation FARM2EK1 Datasheet HTML 5Page - Vicor Corporation FARM2EK1 Datasheet HTML 6Page - Vicor Corporation FARM2EK1 Datasheet HTML 7Page - Vicor Corporation FARM2EK1 Datasheet HTML 8Page - Vicor Corporation FARM2EK1 Datasheet HTML 9Page - Vicor Corporation FARM2EK1 Datasheet HTML 10Page - Vicor Corporation FARM2EK1 Datasheet HTML 11Page - Vicor Corporation  
Zoom Inzoom in Zoom Outzoom out
 8 / 11 page
background image
FARM
Rev 6.7
vicorpower.com
Page 8 of 11
06/2015
800 927.9474
FARMxxxx
The power fail warning time (
Δt) is defined as the interval
between B OK and converter shut down (EN) as illustrated
in Fig. 13. The Bus-OK and Enable thresholds are 205 V
and 190 V, respectively. A simplified relationship between
power fail warning time, operating power, and bus
capacitance is obtained by inserting these constants:
C = 2P
Δt / (205
2 – 1902)
C = 2P
Δt / (5,925)
It should be noted that the series combination (C1, C2, see
Fig. 9)
requires each capacitor to be twice the calculated
value, but the required voltage rating of each capacitor is
reduced to 200 V. Allowable ripple voltage on the bus (or
ripple current in the capacitors) may define the capacitance
requirement. Consideration should be given to converter
ripple rejection and resulting output ripple voltage.
For example, a converter whose output is 15 V and nominal
input is 300 V will provide approximately 56 dB ripple
rejection, i.e., 10 V p-p of input ripple will produce 15 mV
p-p of output ripple (see Fig. 17). Equation 3 is again used
to determine the required capacitance. In this case, V1 and
V2 are the instantaneous values of bus voltage at the peaks
and valleys (see Fig. 13) of the ripple, respectively. The
capacitors must hold-up the bus voltage for the time interval
(
Δt) between peaks of the rectified line as given by:
Δt = (π – θ) / 2πf
(4)
Where:
f = line frequency
θ = rectifier conduction angle
The approximate conduction angle is given by:
θ = Cos
-1
(V
2/V1)
(5)
Another consideration in hold-up capacitor selection is their
ripple current rating. The capacitors’ rating must be higher
than the maximum operating ripple current. The
approximate operating ripple current (rms) is given by:
I rms = 2P/Vac
(6)
Where:
P = total output power
Vac = operating line voltage
Calculated values of bus capacitance for various hold-up
time, ride-through time, and ripple voltage requirements are
given as a function of operating power level in Figures 14,
15, and 16, respectively.
APPLICATION NOTE (CONT.)
Example
In this example, the output required from the DC-DC converter
at the point of load is 12 Vdc at 320 W. Therefore, the output
power from the FARM would be 375 W (assuming a converter
efficiency of 85%). The desired hold-up time is 9 ms over an
input range of 90 to 264 Vac.
Determining Required Capacitance for Power Fail
Warning.
Figure 14 is used to determine capacitance for a
given power fail warning time and power level, and shows
that the total bus capacitance must be at least 820 μF. Since
two capacitors are used in series, each capacitor must be at
least 1,640 μF. Note that warning time is not dependent on
line voltage. A hold-up capacitor calculator is available on
the Vicor website, at:
www.vicorpower.com/powerbench/product-calculators.
Determining Ride-through Time.
Figure 15 illustrates ride-
through time as a function of line voltage and output power,
and shows that at a nominal line of 90 Vac, ride-through
would be 68 ms. Ride-through time is a function of line
voltage.
Determining Ripple Voltage on the Hold-up Capacitors.
Figure 16 is used to determine ripple voltage as a function of
operating power and bus capacitance, and shows that the
ripple voltage across the hold-up capacitors will be 12 V p-p.
Determining the Ripple on the Output of the DC-DC
Converter.
Figure 17 is used to determine the approximate
ripple rejection of the DC-DC converter and indicates a ripple
rejection of approximately 60 dB for a 12 V output. Since the
ripple on the bus voltage is 12 Vac and the ripple rejection of
the converter is 60 dB, the output ripple of the converter due
to ripple on its input (primarily 120 Hz) will be 12 mV p-p.
For more information about designing an autoranging
AC input power supply using the FARM and Vicor DC-DC
converter modules, contact Vicor Applications Engineering
at the nearest Vicor Technical Support Center, or send email
to apps@vicorpower.com.
• • •


Similar Part No. - FARM2EK1

ManufacturerPart #DatasheetDescription
logo
Vicor Corporation
FARM2EK1 VICOR-FARM2EK1 Datasheet
695Kb / 11P
   Filter/Autoranging Rectifier Module Up to 1000 Watts
FARM2EK1 VICOR-FARM2EK1 Datasheet
695Kb / 11P
   Filter/Autoranging Rectifier Module Up to 1000 Watts
More results

Similar Description - FARM2EK1

ManufacturerPart #DatasheetDescription
logo
Vicor Corporation
FARM1C11 VICOR-FARM1C11_17 Datasheet
695Kb / 11P
   Filter/Autoranging Rectifier Module Up to 1000 Watts
483974 VICOR-483974 Datasheet
626Kb / 11P
   Filter/Autoranging Rectifier Module Up to 1000 Watts
FARMXXXX VICOR-FARMXXXX Datasheet
695Kb / 11P
   Filter/Autoranging Rectifier Module Up to 1000 Watts
VI-ARM VICOR-VI-ARM_17 Datasheet
676Kb / 11P
   Autoranging Rectifier Modules Up to 1500 Watts
VI-ARMX1XX VICOR-VI-ARMX1XX Datasheet
676Kb / 11P
   Autoranging Rectifier Modules Up to 1500 Watts
VI-ARM VICOR-VI-ARM Datasheet
302Kb / 12P
   Autoranging Rectifier Modules Up to 1500 Watts
FARM VICOR-FARM Datasheet
314Kb / 12P
   FARM Filter/ Autoranging Rectifier Module
logo
Emerson Network Power
IMP1-3L0-2E2-1Q1-4LL000-A EMERSON-NETWORKPOWER-IMP1-3L0-2E2-1Q1-4LL000-A Datasheet
3Mb / 9P
   Up to 1500 Watts
logo
Artesyn Technologies
MP4-1Q-4LQ-00 ARTESYN-MP4-1Q-4LQ-00 Datasheet
3Mb / 9P
   Up to 1500 Watts
logo
Wall Industries,Inc.
LANK WALL-LANK Datasheet
95Kb / 2P
   UP TO 4 WATTS
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.NET
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com