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PDF ( 数据手册 , 数据表 ) EN1HN1

零件编号 EN1HN1
描述 ENMods Component Power Front End System for EN Compliance
制造商 Vicor Corporation
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EN1HN1 数据手册, 描述, 功能
PRELIMINARY
45
Features
Harmonic Current Attenuation to
EN61000-3-2
EMI Filtering to
EN55022, Level B
Transient Immunity to
EN61000-4-5
575W Rated Power Output
Autoranging 115/230Vac Input
Microprocessor Control
Inrush Current Limiting
Product Highlights
The ENMods system is a new AC front end
solution for compliance to electromagnetic
compatibility (EMC) standards. It consists of
the MiniHAM — a passive harmonic
attenuation module and the FARM3 — an
auto ranging AC-DC front end module.
Combined with the filtering and hold-up
capacitors as specified herein, the ENMods
system provides full compliance to:
EN61000-3-2 Harmonic Current
EN55022, Level B Conducted Emissions
EN61000-4-5 Surge Immunity
EN61000-4-11 Line Disturbances
Data Sheet
ENModsTM
Component Power
Front End System
for EN Compliance
Each module:
2.28 x 2.2 x 0.5 in
57,9 x 55,9 x 12,7 mm
Absolute Maximum Ratings
Parameter
L to N voltage (FARM3)
L to N voltage (FARM3)
+Out to –Out voltage (FARM3)
BOK to –Out voltage (FARM3)
EN to –Out voltage (FARM3)
Mounting torque
Pin soldering temperature
Pin soldering temperature
Output current
Rating
264
280
400
16
16
4-6(0.45 -0.68)
500 (260)
750 (390)
3.5
Unit
Vrms
Vrms
Vdc
Vdc
Vdc
in-lbs (N-m)
°F (°C)
°F (°C)
A
Notes
Continuous
100ms
6 each, 4-40 screw
<5 sec; wave solder
<7 sec; hand solder
The MiniHAM is the first passive product
specifically designed for compliance to EN
harmonic current limits. Unlike active PFC
solutions, the MiniHAM generates no EMI,
greatly simplifying and reducing system
noise filtering requirements. It is also
considerably smaller and more efficient than
active alternatives and improves MTBF by
an order of magnitude. Optimized for
operation on the DC bus (provided by the
FARM3) rather than directly on the AC line,
it will provide harmonic current compliance
up to 600W of input power at 230Vac.
The 115/230Vac input FARM3 is a new
member of Vicor’s Filter and Autoranging
Module product line that has been optimized
for use as the front end for the MiniHAM.
Both modules are in Vicor’s standard Mini
half-brick package. Together with Vicor’s
1st or 2nd Generation 300V input DC-DC
converters, they form the basis of a low
noise, high efficiency, rugged, simple and
reliable EN compliant power system.
Thermal Resistance
Parameter
Baseplate to sink; flat, greased surface
Baseplate to sink; with thermal pad (P/N 20264)
Baseplate to ambient
Baseplate to ambient; 1000 LFM
Typ
0.16
0.14
8.0
1.9
Unit
°C/Watt
°C/Watt
°C/Watt
°C/Watt
Part Numbering
EN1
C
1
Product
Type*
Product Grade
C = –20°C to +100°C
T = –40°C to +100°C
H = –40°C to +100°C
M = –55°C to +100°C
Pin Style**
1 = Short Pin
2 = Long Pin
S = Short ModuMate
N = Long ModuMate
1
Baseplate
1 = Slotted
2 = Threaded
3 = Thru-hole
*EN1 product includes one each MiniHAM and FARM3 with same product grade, pin and baseplate style.
**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
ENMods System: FARM3 and MiniHAM
Set your site on VICOR at www.vicorpower.com
Rev. 1.3
Page 1 of 12







EN1HN1 pdf, 数据表
Application Note (continued)
PRELIMINARY
Off-Line Power Supply Configuration
The ENMods system maintains the DC output bus voltage
between 250 and 370Vdc over the entire input voltage range,
which is compatible with all Vicor 300V input converters.
Autoranging automatically switches to the proper bridge or
doubler mode at startup depending on the input voltage,
eliminating the possibility of damage due to improper line
connection. The ENMods system is rated at 575W output power.
These modules can serve as the AC front end for any number
and combination of compatible converters as long as the
maximum power rating is not exceeded.
Pin Descriptions (see Figure 1a)
Strap (ST) Pin. In addition to input and output power pin
connections, it is necessary to connect the Strap pin to the center
junction of the series hold-up capacitors (C1, C2) for proper
(autoranging) operation. Varistors V1 and V2 provide capacitor
protection. The bleeder resistors (R1, R2) discharge the hold-up
capacitors when power is switched off. Capacitors C7 and C8
are recommended if the hold-up capacitors are located more
than 3 inches from the output pins.
Enable (EN) Pin. The Enable pin must be connected to the PC or
Gate-In pin of all converter modules to disable the converters
during power-up. Otherwise, the converters would attempt to start
while the hold-up capacitors are being charged through the current
limiting thermistor, preventing the bus voltage from reaching the
thermistor bypass threshold, thus disabling the power supply. The
Enable output (the drain of an N channel MOSFET) is internally
pulled up to 15V through a 150kresistor. (see Figure 11)
A signal diode should be placed close to and in series with the
PC or (Gate-In) pin of each converter to eliminate the
possibility of control interference between converters.
The Enable pin switches to the high state (15V) with respect
to the SR pin to turn on the converters after the power-up inrush
is over. The Enable function also provides input overvoltage
protection for the converters by turning off the converters if the
DC bus voltage exceeds 400Vdc. The thermistor bypass switch
opens if this condition occurs, placing the thermistor in series
with the input voltage, which reduces the bus voltage to a safe
level while limiting input current in case the varistors conduct.
The thermistor bypass switch also opens if a fault or overload
reduces the bus voltage to less than 180Vdc. (see Figure 9)
Bus-OK (BOK) Pin. (see Figure 12) The Bus-OK pin is
intended to provide early-warning power fail information and is
also referenced to the SR pin.
Caution: There is no input to output isolation in the ENMods. It is
necessary to monitor Bus-OK via an optoisolator if it is to be
used on the secondary (output) side of the converters. A line isolation
transformer should be used when performing scope measurements.
Scope probes should never be applied simultaneously to the input and
output as this will destroy the unit.
L, N Pins. Line and neutral input.
+, – Pins. Positive and negative outputs.
SR Pin. Signal return for BOK and EN outputs
Filter (see Figure 1b)
The input EMI filter consists of differential and common mode
chokes,Y– rated capacitors (line-ground) and X– rated
capacitors (line-line). This filter configuration provides
sufficient common mode and differential mode insertion loss in
the frequency range between 100kHz and 30MHz to comply
with the Level B conducted emissions limit, as illustrated in
Figures 8a thru 8c.
Hold-up Capacitors
Hold-up capacitor values should be determined according to
output bus voltage ripple, power fail hold-up time, and ride-
through time (see Figure 13). Many applications require the
power supply to maintain output regulation during a momentary
power failure of specified duration, i.e., the converters must
hold-up or ride through such an event while maintaining
undisturbed output voltage regulation. Similarly, many of these
same systems require notification of an impending power failure
in order to allow time to perform an orderly shutdown.
The energy stored on a capacitor which has been charged to
voltage V is:
ε = 1/2(CV2)
(1)
Where:
ε = stored energy
C = capacitance
V = voltage across the capacitor
Energy is given up by the capacitors as they are discharged by
the converters. The energy expended (the power-time product) is:
Where:
ε = Pt = C(V12–V22) / 2
(2)
P = operating power
t = discharge interval
V1 = capacitor voltage at the beginning of t
V2 = capacitor voltage at the end of t
Rearranging Equation 2 to solve for the required
capacitance:
C = 2Pt / (V12–V22)
(3)
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
ENMods System: FARM3 and MiniHAM
Set your site on VICOR at www.vicorpower.com
Rev. 1.3
Page 8 of 12














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EN1HN3ENMods Component Power Front End System for EN ComplianceVicor Corporation
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