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Электронный компонент: FARM2TS1

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Set your site on VICOR at www.vicorpower.com
PRELIMINARY
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
FARM, Filter/Autoranging Rectifier Module
Rev. 4.7
Page 1 of 12
Parameter
Rating
Unit
Notes
L to N voltage
264
Vac
Continuous
L to N voltage
280
Vac
100ms
+Out to Out voltage
400
Vdc
B OK to Out voltage
16
Vdc
EN to Out voltage
16
Vdc
Mounting torque
4-6(0.45 -0.68)
in-lbs (N-m)
6 each, 4-40 screw
Pin soldering temperature
500 (260)
F (C)
<5 sec; wave solder
Pin soldering temperature
750 (390)
F (C)
<7 sec; hand solder
Features
EMI filtering
Choice of 500W or 750W modules
96% Efficiency
Autoranging 115/230Vac input
Microprocessor controlled
Inrush current limiting
Mini sized package
Power fail signal
Module enable
Product Highlights
The FARM (Filter/Autoranging Rectifier
Module) is an AC front-end module which
provides EMI filtering, autoranging line
rectification and inrush current limiting. The
FARM is available in either 500/750W or
750/1000W models in a mini sized package
measuring only 2.28" x 2.2" x 0.5".
The FARM interfaces directly with
worldwide AC mains and may be used with
Vicor 1st or 2nd Generation 300V input
DC-DC converters to realize an autoranging,
high density, low profile switching power
supply. The FARM includes a microcontroller
that continuously monitors the AC line to
control bridge/doubler operation. The user
need only provide external capacitance to
satisfy system hold-up requirements.
Vicor 2nd Generation packaging technology
offers flexible mounting options for various
manufacturing processes. The FARM may be
installed as a conventional leaded device
for on-board applications, in-board for low
profile, height restricted applications,
socketed or surface mounted with optional
ModuMate interconnect products.
Data Sheet
FARM
TM
Filter/
Autoranging Rectifier Module
Up to 1000 Watts
4
5
Shown actual size:
2.28 x 2.2 x 0.5 in
57,9 x 55,9 x 12,7 mm
Absolute Maximum Rating
Thermal Resistance and Capacity
Parameter
Min
Typ
Max
Unit
Baseplate to sink; flat, greased surface
0.16
C/Watt
Baseplate to sink; with thermal pad (P/N 20264)
0.14
C/Watt
Baseplate to ambient
8.0
C/Watt
Baseplate to ambient; 1000 LFM
1.9
C/Watt
FARM
1
C
1
1
Product
Type
1 = 500/750W
2 = 750/1000W
Baseplate
1 = Slotted
2 = Threaded
3 = Thru-hole
Pin Style*
1= Short Pin
2= Long Pin
S= Short ModuMate
N= Long ModuMate
Product Grade
C = 20C to +100C
T = 40C to +100C
Part Numbering
*Pin styles S & N are compatible with the ModuMate interconnect system for socketing and surface mounting.
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
FARM, Filter/Autoranging Rectifier Module
Rev. 4.7
Page 2 of 12
Set your site on VICOR at www.vicorpower.com
PRELIMINARY
Parameter
Min
Typ
Max
Unit
Notes
Operating input voltage
90
132
Vac
Autoranging (doubler mode)
Operating input voltage
180
264
Vac
Autoranging (bridge mode)
Input undervoltage
90
Vac
No damage
AC line frequency
47
63
Hz
CGrade
AC line frequency
47
880
Hz
TGrade
Power factor
0.60
0.65
Typical line
Inrush current
FARM1xxx
30
Amps
264Vac peak line, cold start
FARM2xxx
60
Amps
264Vac peak line, cold start
Input surge withstand
2kV 50 s common mode
EN61000-4-5
1kV 50 s differential mode
SAFETY SPECIFICATIONS (FARM1xxx, FARM2xxx)
MODULE INPUT SPECIFICATIONS (FARM1xxx, FARM2xxx)
MODULE OUTPUT SPECIFICATIONS
Electrical Characteristics
Electrical characteristics apply over the full operating range of input voltage, output power and baseplate temperature, unless
otherwise specified. All temperatures refer to the operating temperature at the center of the baseplate. Specifications apply for
AC mains having up to 5% total harmonic distortion.
Parameter
Min
Typ
Max
Unit
Notes
Safety approvals
UL 1950, CSA 22.2 No. 950,
TV, VDE, EN60950, CE Marked
Isolation voltage (in to out)
None
Isolation provided by DC-DC converter(s)
Isolation voltage (I/O to baseplate)
1500
Volts, rms
Leakage current
1.2
mA
264Vac
FARM1xxx
FARM2xxx
Parameter
Min
Typ
Max
Min
Typ
Max
Unit
Notes
Output power
0
500
0
750
Watts
90-132Vac
Output power
0
750
0
1000
Watts
180-264Vac
Efficiency, 120Vac
94
96
94
96
%
Efficiency, 240Vac
94
96
94
96
%
Output voltage
250
370
250
370
Vdc
90-264Vac
Hold-up capacitance
1,800
3,300
F
Set your site on VICOR at www.vicorpower.com
PRELIMINARY
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
FARM, Filter/Autoranging Rectifier Module
Rev. 4.7
Page 3 of 12
Electrical Characteristics (continued)
MODULE CONTROL SPECIFICATIONS
MODULE GENERAL SPECIFICATIONS
Parameter
Min
Typ
Max
Unit
Notes
AC Bus OK (B OK)
Low state resistance
15
To negative output - Bus normal
Low state current
50
mA
Bus normal
High state voltage
14.8
15.0
15.2
Vdc
Bus abnormal, 27K internal pull up to 15Vdc (see Fig.11)
B OK true threshold
235
240
245
Vdc
Output Bus voltage
B OK false threshold
200
205
210
Vdc
Output Bus voltage
Module Enable (EN)
Low state resistance
15
To negative output - Converters disabled
Low state current
50
mA
High state voltage
14.8
15.0
15.2
Vdc
150K internal pull up to 15Vdc (see Fig. 10)
Enable threshold
235
240
Vdc
Output bus voltage
Disable threshold
185
190
195
Vdc
Output bus voltage
AC Bus OK - Module Enable, differential error*
15
17
20
Vdc
AC Bus OK and Module Enable thresholds track
Parameter
Min
Typ
Max
Unit
Notes
MTBF
>1,000,000
Hours
25C, Ground Benign
Baseplate material
Aluminum
Cover
Polyetherimide
Pin Material
Copper, Tin/lead solder dipped
Weight
3.1(88)
Ounces (grams)
Size
2.28 x 2.2 x 0.5
Inches
57,9 x 55,9 x 12,7
(mm)
Storage Temperature
(C, T-Grade)
-40
+125
C
Operating Temperature (C-Grade)
-20
+100
C
Baseplate
(T-Grade)
-40
+100
C
Baseplate
* Tracking error between BUS OK and Enable thresholds
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
FARM, Filter/Autoranging Rectifier Module
Rev. 4.7
Page 4 of 12
Set your site on VICOR at www.vicorpower.com
PRELIMINARY
Operating Characteristics
Figure 1--Start-up at 120Vac input
Figure 3--Power down, from 120Vac
Figure 4--Power down, from 240Vac
Figure 2--Start-up at 240Vac input
Vdc output
Strap
Engaged
I
ac input @2A / mV
I
ac input @2A / mV
Enable
Enable
B OK
Vdc output
B OK
Vdc output
Enable
B OK
Vdc output
Enable
B OK
Figure 5--Output overvoltage protection 240Vac range
Vdc output
Enable
B OK
Figure 6--Typical Conducted Emissions
Set your site on VICOR at www.vicorpower.com
PRELIMINARY
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
FARM, Filter/Autoranging Rectifier Module
Rev. 4.7
Page 5 of 12
The Filtered, Autoranging Rectifier Module (FARM) provides an
effective solution for the AC front end of a power supply built
with Vicor DC-DC converters. This high performance power
system building block satisfies a broad spectrum of requirements
and agency standards.
In addition to providing transient/surge immunity and EMI
filtering, the FARM contains all of the power switching and
control circuitry necessary for autoranging rectification, inrush
current limiting, and overvoltage protection. This module also
provides converter enable and status functions for orderly power
up/down control or sequencing. To complete the AC front end
configuration, the user only needs to add hold-up capacitors, and
a few discrete components.
Functional Description
Power-Up Sequence. (see Fig. 8):
Upon application of input power, the output bus capacitors
begin to charge. The thermistor limits the charge current,
and the exponential time constant is determined by the
hold-up capacitor value and the thermistor cold resistance.
The slope (dv/dt) of the capacitor voltage versus time
approaches zero as the capacitors become charged to the
peak of the AC line voltage.
The switch that bypasses the inrush limiting PTC (positive
temperature coefficient) thermistor is open when power is
applied, as is the switch that engages the strap for voltage
doubling. (see Fig. 7). In addition, the converter modules
are disabled via the Enable (EN) line, and Bus-OK (BOK)
is high.
If the bus voltage is less than 200V as the slope nears
zero, the voltage doubler is activated, and the bus voltage
climbs exponentially to twice the peak line voltage.
If the bus voltage is greater than 200V, the doubler is
not activated.
If the bus voltage is greater than 235V as the slope
approaches zero, the inrush limiting thermistor is
bypassed. Below 235V, it is not bypassed.
The converters are enabled 50 milliseconds after the
thermistor bypass switch is closed.
Bus-OK is asserted after an additional 50 millisecond
delay to allow the converter outputs to settle within
specification.
Power-Down Sequence. (see Fig. 8) When input power is
turned off or fails, the following sequence occurs as the bus
voltage decays:
Bus-OK is deasserted when the bus voltage falls below
210Vdc.
The converters are disabled when the bus voltage falls
below 190Vdc. If power is reapplied after the converters
are disabled, the entire power-up sequence is repeated. If
a momentary power interruption occurs and power is
reestablished before the bus reaches the disable threshold,
the power-up sequence is not repeated, i.e., the power
conversion system "rides through" the momentary
interruption.
Application Note
Microcontroller
N
L
PTC
Thermistor
+Out
Out
Strap
EN
BOK
Strap
400
300
200
100
0
90132V
AC Line
Output
Bus
(Vdc)
Strap
PTC
Thermistor
Bypass
Converter
Enable
Bus OK
50ms
50ms
Power
Up
Power
Down
4.1
1.1
2.1
3.1
5.1
2.2
1.2
Figure 7--Functional block diagram: autoranging rectifier
Figure 8--Timing diagram: power up/down sequence
1.1
2.1
3.1
4.1
5.1
1.2
2.2