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參數資料
| 型號： | VI-RAM-M2 |
| 元件分類： | 模擬信號調理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, DMA9 |
| 文件頁數： | 1/4頁 |
| 文件大小： | 202K |
| 代理商： | VI-RAM-M2 |
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
VI-RAM Ripple Attenuator Modules
Rev.1.6
Page 1 of 4
Set your site on VICOR at vicorpower.com
Features
RoHS compliant (VE versions)
Reduces output ripple to < 3 mV pp
Compatible with any VI-200/VI-J00-
based product: 5 to 50 Vdc output
Full attenuation up to 20 A
No adjustments required
93 – 99% efficiency
Converter sense, trim, overvoltage
and overcurrent retained
Size: 2.28" x 2.4" x 0.5"
(57,9 x 61,0 x 12,7 mm)
CE Marked
Product Highlights
Ripple attenuator modules may be connected
to VI-200 or VI-J00 converters, FlatPACs,
ComPACs or MegaModules, with output
voltages from 5 – 50 V, to limit output noise
to less than 3 mV peak-to-peak at loads up
to 20 A. Combining active and passive
filtering, the VI-RAM attenuates both
low frequency input power source
fundamental and harmonics, as well as high
frequency switching components in the
frequency range of DC to 20 MHz, while
exhibiting efficiencies of 93-99%. No
adjustments are required, and remote sense
and output voltage trim features are retained.
A member of Vicor’s high-power density,
high performance, component-level
power building blocks, the VI-RAM offers
the power systems architect a single,
flexible, component-level solution to almost
any “clean power” problem. At the same
time, the VI-RAM eliminates the space,
efficiency, and weight penalties associated
with linear power sources, and the stability,
efficiency, and adjustment penalties
associated with external “add on” filters for
conventional switchers.
Data Sheet
VI-RAMTM/VE-RAM (RoHS Compliant)
Ripple Attenuator Modules
VI-RAM Specifications
(typical at TBP = 25°C, nominal line, 75% load unless otherwise specified)
Parameter (Up to 10 A)
VI-RAM-E1
VI-RAM-C1
VI-RAM-I1
VI-RAM-M1
(Up to 20 A)
VI-RAM-E2
VI-RAM-C2
VI-RAM-I2
VI-RAM-M2
Storage Temp.
-20°C to +105°C
-40°C to +105°C
-55°C to +105°C
-65°C to +105°C
Operating Temp.
-10°C to +100°
-25°C to +100°C
-40°C to +100°C
-55°C to +100°C
(Baseplate)
Parameter
Min.
Typ.
Max.
Remarks
Output Noise & Ripple
VI-200
3 mV pp
From 10% of full rated
VI-J00
10 mV pp
output current of the
source converter to full load
Input Voltage Range
5 Vdc
50 Vdc
Output Voltage Deviation
0.5%
From the output voltage of
the VI-200 source to which
the VI-RAM will be connected
Full Load Current
10 A
E1, C1, I1 or M1
20 A
E2, C2, I2 or M2
Overload Current
30 A
At max. operating baseplate
temperature
DC Voltage Drop
0.34
0.41
Up to 10 A
0.34
0.44
Up to 20 A
0.34
0.75
Up to 30 A (overload)
Dissipation = (DC voltage drop) x (Load current + 15 mA)
Isolation
500VRMS
Input/Output to baseplate
Size
2.28" x 2.4" x 0.5"
SlimMod and FinMod
(57,9 x 61,0 x 12,7)
packages available
Weight
E,C-Grade
3.0(85)
I,M-Grade
3.6(102)
3.7(105)
3.8(107)
Ounces(Grams)
Product Grade Specifications
Transient Response and Dynamic Range: Full rated noise attenuation will be maintained at
the VI-RAM output for step load changes up to 10% of the rated output current of the source
converter, with the VI-RAM exhibiting an underdamped output excursion of less than 10 mV pp.
Some degradation in noise attenuation during the transient response period following the step may be
exhibited for larger load changes. Adding output capacitance to the VI-RAM will improve the
rejection over a larger dynamic range.
Sense Connection: Sense -In and Sense -Out connections are provided on the VI-RAM. Sense -In
connections must be connected to the corresponding sense connections on the Vicor converter. Sense -Out
pins on the VI-RAM must be connected between the VI-RAM power-output pins and the point of load.
Output Load Characteristics: When used in combination with Vicor DC-DC converters, and
with sense leads connected, the VI-RAM will be stable for any non-inductive load.
DC Voltage Drop: Below full load, the input to output DC Voltage Drop is controlled to be an
essentially constant voltage which appears between the –IN and –OUT terminals. In overload the DC
voltage drop will rise as current increases. A few tens of millivolts appears between the +IN and
+OUT terminals. Care should be taken not to connect IN and OUT terminals (i.e. through scope probe
returns, grounds, etc.), as attenuation will be adversely affected.
Electrical Considerations
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