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PRELIMINARY
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715 ENMods System: FARM3 and MiniHAM Rev. 1.3 Page 1 of 12
Parameter Rating Unit Notes
L to N voltage (FARM3) 264 Vrms Continuous
L to N voltage (FARM3) 280 Vrms 100ms
+Out to –Out voltage (FARM3) 400 Vdc
BOK to –Out voltage (FARM3) 16 Vdc
EN to –Out voltage (FARM3) 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
Output current 3.5 A
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
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.
Data Sheet
ENMods
TM
Component Power
Front End System
for EN Compliance
45
Each module:
2.28 x 2.2 x 0.5 in
57,9 x 55,9 x 12,7 mm
Absolute Maximum Ratings
Thermal Resistance
Parameter Typ 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
EN1 C 1 1
Product
Type*
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 = –20°C to +100°C
T = –40°C to +100°C
H = –40°C to +100°C
M = –55°C to +100°C
Part Numbering
*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 Rev. 1.3 Page 2 of 12
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PRELIMINARY
Parameter Min Typ Max Unit Notes
Operating input voltage 90 115 132 Vac Autoranging (doubler mode)
Operating input voltage 180 230 264 Vac Autoranging (bridge mode)
Input undervoltage 90 Vac No damage
AC line frequency 47 63 Hz C-,T-, H- and M-Grade
Power factor 0.68 0.72 Typical line
Inrush current 30 Amps 264Vac line voltage
Efficiency 94 96 % Full load
AC Bus OK (BOK)
Low state resistance 15 Ω 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 Figure12)
BOK true threshold 235 240 245 Vdc Output Bus voltage
BOK false threshold 200 205 210 Vdc Output Bus voltage
Module Enable (EN)
Low state resistance 15 Ω 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 Figure 11)
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
FARM3 MODULE SPECIFICATIONS (see Figure 3 thru Figure 7 for operating characteristics)
MINIHAM MODULE SPECIFICATIONS (when used in accordance with Figure 1a)
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. Performance specifications
are based on the ENMods system as shown in Figure 1a.
Parameter Min Typ Max Unit Notes
Output power 0 575 Watts
Efficiency @115Vac 93 94 % Full load
Efficiency @ 230Vac 96 97 % Full load
Output voltage 250 375 Vdc
External hold-up capacitance 3,300 µF
* 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 (see Figure 2)
Input line disturbances EN61000-4-11
Input surge withstand EN61000-4-5
2kV–50 µs common mode
1kV–50 µs differential mode
Conducted emissions EN55022, Level B (See Figures 8a thru 8c)
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PRELIMINARY
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Electrical Characteristics (continued)
MODULE GENERAL SPECIFICATIONS
Parameter Min Typ Max Unit Notes
Safety approvals
FARM3 TÜV + 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 baseplates) 1500 Vrms Baseplate earthed
Leakage current 2.5 mA 264Vac
MTBF >1,000,000 Hours 25˚C, Ground Benign
Baseplate material Aluminum
Cover Dupont Zenite / Aluminum
Pin material
–Style 1 & 2 Copper, 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)
Size 2.25 x 2.2 x 0.5 Inches Vicor’s standard mini half-brick package
57,9 x 55,9 x 12,7 mm
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 Baseplate
(T-, H-Grade) -40 +100 °C Baseplate
(M-Grade) -55 +100 °C Baseplate
Figure 1a—ENMods system and DC-DC converter interconnection drawing
Holdup Box (HUB)
820µF HUB820-S 2200µF HUB2200-S
1200µF HUB1200-S 2700µF HUB2700-S
1800µF HUB1800-S 3300µF HUB3300-S
Part
C1,2
C3 – 6
C7,8
C9,C10
R1,2
R3
V1,2
V3
V5,V6
F1,2
D1,2
D3,D4
N
AC line Input
L
PE
Description
Holdup capacitors
4700pF
Film Cap., 0.8µF
.001µF
150kΩ, 0.5W
499Ω, 0.125W
MOV 220V
270V MOV
BBS75 Gas Tube
3A, PC Tron
Diode (1N4006)
1N5817
N
N
Filter
(Fig.1b)
L
L
Vicor
Part Number
see text
01000
00127-1503
20461-220
03040
26107
02178
00670
26108
V5
N
V3
EMI GND
SR
L
FARM3
+
C7
BOK
ST
EN
C8
–
Sizing PCB traces:
All traces shown in bold carry significant
current and should be sized accordingly.
N/+
V1
NC
NC
V2
L/–
MINI
HAM
V6
N/+
NC
NC
NC
L/–
R1R2C1
C2
R3
D1
D2
C10
To additional converters
C3
F1
C9
F2
+In
D3
PC (Gate In)
Vicor 300Vin
DC-DC
PR (Gate Out)
–In
C4
C5
+In
D4
PC (Gate In)
PR (Gate Out)
–In
C6
Converter
Vicor 300Vin
DC-DC
Converter
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715 ENMods System: FARM3 and MiniHAM Rev. 1.3 Page 4 of 12
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PRELIMINARY
Figure 1b — Input EMI filter for EN55022, Level B compliance
Figure 2 — Measured harmonic current at 230VAC, 575W vs. EN spec limits
*Measured values of even harmonics are below 0.01A
Operating Characteristics
R1
Input
L3
L2/N
C2
L1
L1
PE
F1
V1
C1
L2
R2
R3
C3
Harmonic Current
10.00
R4
C4
Output
PE
Part
C1
C2, C3
N
L
C4
F1
F1
L1, L2
L3
R1, R2
R3
R4
V1
Description
1.0µF
4700pF
0.33µF
6.3A Fuse(5mm)
Fuse Holder
27µH
1.3mH
10Ω
150kΩ, 0.5W
2.2Ω, 2W
MOV
Vicor
Part Number
02573
01000
00927
22985
25318
14563
15016
00126-10R0
00127-1503
25896
03040
1.00
Odd Harmonic Limits
*
Even Harmonic Limits
Current (A)
0.10
0.01
2345678910111213141516171819202122232425262728293031323334353637383940
Measured Values
Harmonic Number