URAM2M11 Vicor Corporation, URAM2M11 Datasheet

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URAM2M11

Manufacturer Part Number
URAM2M11
Description
Manufacturer
Vicor Corporation
Datasheet
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
45
Features
• >40dB ripple attenuation from
• Integrated OR’ing diode supports
• Significantly improves load
• Efficiency up to 98%
• User selectable performance optimization
• Combined active and passive filtering
• 3-30Vdc input range
• 20 and 30 Ampere ratings
Product Highlights
Vicor’s MicroRAM output ripple attenuation
module combines both active and passive
filtering to achieve greater than 40dB of
noise attenuation from 60Hz to 1Mhz. The
MicroRAM operates over a range of 3 to
30Vdc, is available in either 20 or 30A
models and is compatible with most
manufacturers switching converters
including Vicor’s 1st and 2nd Generation
DC-DC converters.
The MicroRAM’s closed loop architecture
greatly improves load transient response and
with dual mode control, insures precise point
of load voltage regulation, The MicroRAM
supports redundant and parallel operation
with its integrated OR’ing diode function.
It is available in Vicor’s standard micro
package (quarter brick) with a variety of
terminations for through hole, socket or
surface mount applications.
60Hz to 1MHz
N+1 redundancy
transient response
Set your site on VICOR at www.vicorpower.com
Data Sheet
MicroRAM
Output Ripple Attenuation Module
Absolute Maximum Ratings
Thermal Resistance
Part Numbering
Parameter
+In to –In
+In to –In
Load current
Ripple Input (Vp-p)
Ripple Input (Vp-p)
Mounting torque
Pin soldering temperature
Pin soldering temperature
Storage temperature (C, T-Grade)
Storage temperature (H-Grade)
Storage temperature (M-Grade)
Operating temperature (C-Grade)
Operating temperature (T, H-Grade)
Operating temperature (M-Grade)
Parameter
Baseplate to sink; flat, greased surface
Baseplate to sink; with thermal pad (P/N 20264)
Baseplate to ambient
Baseplate to ambient; 1000 LFM
*Pin styles S & N are compatible with the ModuMate interconnect system for socketing and surface mounting.
uRAM
Product
PRELIMINARY
2 = 20A
3 = 30A
Type
2
MicroRAM
TM
C = –20°C to +100°C
H = –40°C to +100°C
M = –55°C to +100°C
T = –40°C to +100°C
Product Grade
4-6 (0.45-0.68) In. lbs (Nm)
-40 to +125
-55 to +125
-65 to +125
-20 to +100
-40 to +100
-55 to +100
500 (260)
750 (390)
C
Rating
100
500
30
40
40
°F (°C)
°F (°C)
0.16
0.14
Typ
1 = Short Pin
2 = Long Pin
S = Short ModuMate
N = Long ModuMate
Unit
8.0
1.9
Vdc
Vdc
Adc
mV
mV
°C
°C
°C
°C
°C
°C
Pin Style*
57,9 x 36,8 x 12,7 mm
2
2.28 x 1.45 x 0.5 in
Shown actual size:
Rev. 1.1
Patents Pending
Notes
Continuous
100ms
Continuous
60Hzc100 kHz
100kHz–2MHz
6 each, 4-40 screw
5 sec; wave solder
7 sec; wave solder
Baseplate
Baseplate
Baseplate
1 = Slotted
2 = Threaded
3 = Thru-hole
Baseplate
Page 1 of 8
°C/Watt
°C/Watt
°C/Watt
°C/Watt
1
Unit

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URAM2M11 Summary of contents

Page 1

Features • >40dB ripple attenuation from 60Hz to 1MHz • Integrated OR’ing diode supports N+1 redundancy • Significantly improves load transient response • Efficiency up to 98% • User selectable performance optimization • Combined active and passive filtering • ...

Page 2

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. µRAM MODULE SPECIFICATIONS (-20°C to +100°C ...

Page 3

Electrical Characteristics (continued) APPLICATION SCHEMATIC DRAWINGS USING VICOR CONVERTERS AND THE µRAM (2) +In PC DC-DC Converter PR –In Figure 1—Typical Configuration using Remote Sensing +In DC-DC PC Converter PR –In Figure 2—Typical Configuration using SC Control (Oppional C Functional ...

Page 4

Functional Description (continued) The active loop senses the output current and reduces the headroom voltage in a linear fashion to approximate constant power dissipation of MicroRAM with increasing loads (see Figures 5, 6 & 6). The headroom setting ...

Page 5

Ripple Attenuation @ 28V (Room Temp.) 20.00 0.00 -20.00 -40.00 -60.00 -80.00 10 100 1,000 10,000 Freq. (Hz) 10A, 100uF Vref Figure 3a, 3b—Curves demonstrating the small signal attenuation performance as measured on a network analyzer with a typical ...

Page 6

VOUT=3V 400mV 300mV 200mV V(VSOURCE) –V(VOut) I_Iload Figure 5—Headroom vs. load current at 3V output. 450mV VOUT=28V ...

Page 7

Figure 11—V375B12C250A and µRAM; Input and output ripple @50% (10A) load CH1=Vi; CH2=Vo; Vi-Vo=305mV; R (Configured as in Figs. 1 & 2) Figure 13—V300B12C250A and µRAM; Input and output dynamic response C =820µF Electrolytic; 30% of load TRAN step ...

Page 8

Mechanical Drawings MODULE OUTLINE uRAM Pins No. Function Label 1 + Control SC 0.235±.015 3 C ext. CTRAN 5,97±0,38 (REF) 4 –In – 5 –Out – Reference Vref 7 +Out + 0.350±.015 8,89±0,38 (REF) 7 Slotted ...

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