EN55022中⽂资料
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 /doc/115727505.html
bined 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 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
noi 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 u 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 noi, high efficiency, rugged, simple and reliable EN compliant power system.
Data Sheet
ENMods
TM
Component Power Front End System for EN Compliance
4Each module:2.28 x 2.2 x 0.5 in 57,9 x 55,9 x 12,7 mm
Absolute Maximum
Ratings
Thermal Resistance
Part Numbering
*EN1 product includes one each MiniHAM and FARM3 with same product grade, pin and baplate 芹菜木耳
style.**Pin styles S & N are compatible with the ModuMate interconnect system for socketing and surface mounting.
神奇的一天Parameter
Min Typ Max Unit Notes
Operating input voltage 90115132Vac Autoranging (doubler mode)Operating input voltage 180
230
冰草可以生吃吗264Vac Autoranging (bridge mode)Input undervoltage 90Vac No damage
AC line frequency 4763
Hz
C-,T-, H- and M-Grade Power factor 0.68
0.72
Typical line Inrush current 30
Amps 264Vac line voltage Efficiency 94肺结核用药
96
%
Full load
AC Bus OK (BOK)
Low state resistance 15?To negative output - Bus normal Low state current 50mA Bus normal
High state voltage 14.815.015.2Vdc Bus abnormal, 27k internal pull up to 15Vdc (e Figure12)BOK true threshold 235240245Vdc Output Bus voltage BOK fal threshold 200
205
210
Vdc
Output Bus voltage山水照片
Module Enable (EN)
Low state resistance 15?To negative output - Converters disabled
Low state current 50mA High state voltage 14.815.015.2
Vdc 150k internal pull up to 15Vdc (e Figure 11)Enable threshold 235240Vdc Output bus voltage Disable threshold 185190195Vdc Output bus voltage
AC Bus OK - Module Enable, differential error*
15
17
20Vdc
AC Bus OK and Module Enable thresholds track FARM3 MODULE SPECIFICATIONS (e Figure 3 thru Figure 7 for operating characteristics)
MINIHAM MODULE SPECIFICATIONS (when ud in accordance with Figure 1a)
Electrical Characteristics
Electrical characteristics apply over the full operating range of input voltage, output power and baplate temperature, unless otherwi specified. All temperatures refer to the operating temperature at the center of the baplate. Performance specifications are bad on the ENMods system as shown in Figure 1a.
*Tracking error between BUS OK and Enable thresholds
ELECTROMAGNETIC COMPATIBILITY (configured as illustrated in Figures 1a and 1b)
Harmonic currents EN61000-3-2, Amendment 14
50-625W, 230Vac input 575W output (e Figure 2)
Input line disturbances EN61000-4-11Input surge withstand EN61000-4-52kV–50 µs common mode 1kV–50 µs differential mode Conducted emissions
EN55022, Level B
(See Figures 8a thru 8c)
Electrical Characteristics (continued)
MODULE GENERAL SPECIFICATIONS
Parameter Min Typ Max Unit Notes
Safety approvals
FARM3TüV + VDE EN60950, CE Marked (pending) MiniHAM CE Marked (pending)
Isolation (in to out)None Isolation provided by DC-DC converter(s) Dielectric withstand (I/O to baplates)1500Vrms Baplate earthed
Leakage current 2.5mA264Vac
MTBF>1,000,000Hours25?C, Ground Benign
Baplate material Aluminum
Cover Dupont Zenite / Aluminum
Pin material
–Style 1 & 2Copper, Tin/Lead solder dipped
–Style S & N (ModuMate compatible)Copper, Nickel/Gold plating
Weight
FARM3 3.1(88)Ounces (grams)
MiniHAM 5.1(145)Ounces (grams)
委琐Size 2.25 x 2.2 x 0.5Inches Vicor’s standard mini half-brick package
57,9 x 55,9 x 12,7mm
Storage temperature
(C-, T-Grade)-40+125°C
(H-Grade)-55+125°C
(M-Grade)-65+125°C
Operating temperature
(C-Grade)-20+100°C Baplate
(T-, H-Grade)-40+100°C Baplate
(M-Grade)-55+100°C Baplate
Figure 1a—ENMods system and DC-DC converter interconnection drawing
Operating Characteristics
— Input EMI filter for EN55022, Level B compliance
Figure 1b Array
Figure 2 —Measured harmonic current at 230VAC, 575W vs. EN spec limits *Measured values of even harmonics are below 0.01A
Operating Characteristics (FARM3)
Figure 3—Start-up at 120Vac input Figure 6—Power-down from 240Vac
Figure 4—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 7—Output overvoltage protection 240Vac range
Vdc output
Enable
B OK
Operating Characteristics (Conducted emissions relative to EN55022 Reference Figure 1a)
Quasi Peak and Average Limits
Figure 8a —Peak detection
Figure 8b —Quasi peak detection
Figure 8c —Average detection
The ENMods system 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.
The ENMods system provides transient/surge immunity, harmonic current attenuation and EMI filtering, in addition to all of the power switching and control circuitry necessary for autoranging rectifi
cation, inrush current limiting, and overvoltage protection.Converter enable and status functions for orderly power up/down control or quencing are also provided. To complete the AC front end configuration, the ur only needs to add hold-up capacitors,a simple EMI filter, and a few discrete components (Fig 1A).
Functional Description (F ARM3, e Figures 9 & 10)
Power-Up Sequence.
Upon application of input power, the hold-up 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 bypass 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. 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 bypasd. Below 235V , it is not bypasd.The converters are enabled 50 milliconds after the
thermistor bypass switch is clod.Bus-OK is asrted after an additional 50 millicond
delay to allow the converter outputs to ttle within specification.Power-Down Sequence.When input power is turned off or fails, the following quence occurs as the bus voltage decays:Bus-OK is deasrted 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 quence is repeated. If a momentary power interruption occurs and power is reestablished before the bus reaches the disable threshold, the power-up quence is not repeated, i.e., the power conversion sy
stem “rides through” the momentary interruption.萨尔浒之战
Application Note
Figure 9—Functional block diagram: FARM3 module Figure 10—Timing diagram: power-up/down quence
1.1
2.1
3.1
4.1
5.11.22.2
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 automatic
ally 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. The modules can rve 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 (e 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 ries 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.
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