MicroRAM Output Ripple Attenuator Module / Vicor Power Filters

MicroRAM – Output Ripple Attenuator Module

Click above to find your part number and purchase samples online.

Military COTS Version Available »

Quick Links

Custom Turnkey Solutions

Can’t find a match for your specs? We can design and manufacture turnkey custom power systems that meet your specific needs!

USA:

Vicor Custom Power »

Input Voltage:

3 – 30 Vdc

Output Current:

µRAM2(xxx) 20 A
µRAM3(xxx) 30 A

Efficiency:

Up to 98%

Dimensions

(quarter brick):

2.28" x 1.45" x 0.5"
(57,9 x 36,8 x 12,7 mm)

>40 dB ripple attenuation from 60 Hz to 1 MHz
Integrated ORing diode supports N+1 redundancy
Significantly improves load transient response
User selectable performance optimization
Combined active and passive filtering
20 and 30 Ampere ratings

The MicroRAM output ripple attenuation module combines both active and passive filtering to achieve greater than 40 dB of noise attenuation from 60 Hz to 1 MHz. The MicroRAM operates over a range of 3 to 30 Vdc, is available in either 20 or 30 A models and is compatible with most manufacturers switching converters including Vicor's VI-200 / VI-J00 and Maxi, Mini and Micro series DC-DC converters.

The MicroRAM's closed loop architecture greatly improves load transient response and with dual-mode control, provides precise point-of-load voltage regulation. The MicroRAM supports redundant and parallel operation with its integrated ORing diode function.

Vicor's experienced Application Engineers are here to help.

For help with product selection and availability, placing an order and order status:

800-735-6200

Email: custserv@vicorpower.com

International Sales & Service »

Ask about our Express Order Program - Great for Prototype Samples!

Helps you optimize your design and accelerate the prototyping process

International Support Contacts

Email: custserv@vicorpower.com

Contact Sales / Customer Service »

Contact Vicor Applications Engineering »

MicroRAM Application Note »

MicroRAM Data Sheet »

Download Entire Manual
Maxi, Mini, Micro Design Guide and Applications Manual »

Download Individual Chapters

Accessory Modules

Recommended Soldering Methods

Lead Free Pins (RoHS) »
Tin Lead Pins »

Mounting Options

These calculator programs allow users to determine values that help with accessory
component selection for power system design.

Thermal Calculators
Thermal impedance calculator »

Thermal data and heat sink selection tool »
This is a downloadable Excel file.

2-D Micro-size Drawings
Drwg. Number	Description	Download	RoHS
25004	Outline drawing for Micro DC-DC Converter	DXF \| PDF

3-D Micro-size Module (referring to drawing number 25004)
Micro, short tin / lead pin, slotted baseplate		STEP \| 3D PDF
Micro, short tin / lead pin, threaded baseplate		STEP \| 3D PDF
Micro, short tin / lead pin, through-hole baseplate		STEP \| 3D PDF

Micro, long tin / lead pin, slotted baseplate		STEP \| 3D PDF
Micro, long tin / lead pin, threaded baseplate		STEP \| 3D PDF
Micro, long tin / lead pin, through-hole baseplate		STEP \| 3D PDF

Micro, short ModuMate, slotted baseplate		STEP \| 3D PDF
Micro, short ModuMate, threaded baseplate		STEP \| 3D PDF
Micro, short ModuMate, through-hole baseplate		STEP \| 3D PDF

Micro, long ModuMate, slotted baseplate		STEP \| 3D PDF
Micro, long ModuMate, threaded baseplate		STEP \| 3D PDF
Micro, long ModuMate, through-hole baseplate		STEP \| 3D PDF

Micro, short gold pin (RoHS), slotted baseplate		STEP \| 3D PDF
Micro, short gold pin (RoHS), threaded baseplate		STEP \| 3D PDF
Micro, short gold pin (RoHS), through-hole baseplate		STEP \| 3D PDF

Micro, long gold pin (RoHS), slotted baseplate		STEP \| 3D PDF
Micro, long gold pin (RoHS), threaded baseplate		STEP \| 3D PDF
Micro, long gold pin (RoHS), through-hole baseplate		STEP \| 3D PDF

CE Marked – Low Voltage Directive (2006/95/EC)

ORDER PROTOTYPE QUANTITIES:
Click on part number below.

Click img. to enlarge	Description	P/N	RoHS	Technical Drawing
	Micro-sized Shield for Slotted Baseplate	30141		PDF \| DXF
	Micro-sized Shield for Threaded or Through-Hole Baseplate	30143		PDF \| DXF

Click img.
to enlarge

ORDER PROTOTYPE QUANTITIES:
Click on part number below.

SurfMates – Surface-mount Sockets

All SurfMates are RoHS Compatible

Board Thickness

Mounting

Assembly Drawing

Converter Pin Style*

Module Style

Input
P/N**

Output P/N**

5 In/Out Sets P/N

Technical Drawing

All

surface

PDF | DXF

Micro

22103

22104

16025

PDF | DXF

Example of SurfMate Application »

   * F = Short Gold (RoHS), G = Long Gold (RoHS)
  ** For individual input / output purchases, a 35-piece minimum (and multiples) applies to Maxis / Minis and
        a 40-piece minimum (and multiples) for Micros. To order these items please contact customer service.

Click img.
to enlarge

InMates – Through-hole

All InMates are RoHS Compatible

All sockets are supplied on InMate headers to assure proper alignment during installation.

Board Thickness (nominal)

Board Thickness
(min / max)

Mounting

Converter Pin Style*

Module Style

Input P/N**

Output P/N**

5 In/Out Sets P/N

Technical Drawing

0.063"

0.055" / 0.071"

inboard

Micro

18376

18386

18370

PDF | DXF

0.063"

0.055" / 0.071"

onboard

Micro

18380

18392

18372

PDF | DXF

0.094"

0.084" / 0.104"

inboard

Micro

18377

18387

18371

PDF | DXF

0.094"

0.084" / 0.104"

onboard

Micro

18381

18393

18373

PDF | DXF

0.125"

0.1125" / 0.1375"

onboard

Micro

21540

21545

21512

PDF | DXF

Example of Inboard Mounting Options »
Example of Onboard Mounting Options »

Module Exchange Tools

ORDER PROTOTYPE QUANTITIES:
Click on part number below.

Click img.
to enlarge

Description

Module Style

P/N

Technical Drawing

Used to facilitate the proper extraction of Micro modules from InMate or SurfMate sockets.

Micro

22829

–

ORDER PROTOTYPE QUANTITIES:
Click on part number below.

Heat Sinks used with Vicor's Micro-Size Modules
Click img. to enlarge	Description		P/N	RoHS	Technical Drawing
	0.40" longitudinal fins, threaded mounting*		32174		PDF \| DXF
	0.90" longitudinal fins, threaded mounting*		30190		PDF \| DXF

	0.40" longitudinal fins, thru-hole mounting		30719		PDF \| DXF
	0.90" longitudinal fins, thru-hole mounting		30183		PDF \| DXF

	0.40" transverse fins, threaded mounting*		32173		PDF \| DXF
	0.90" transverse fins, threaded mounting*		30270		PDF \| DXF

	0.40" transverse fins, thru-hole mounting		30722		PDF \| DXF
	0.90" transverse fins, thru-hole mounting		30725		PDF \| DXF
	* NOT for use with threaded baseplates
	Heat Sink Thermal Data and Calculator »


Low-Profile Side-Fin Heat Sinks (Height only 0.125" above module baseplate)
Click img. to enlarge	Description		P/N	RoHS	Technical Drawing
	0.55" Side-Fin Heat Sink for Micro-Sized Modules		30095		PDF
	Heat Sink Thermal Data and Calculator »


ThermMate Thermal Pads (10 pieces per package)
Click img. to enlarge	Description	P/N	Thickness	RoHS	Technical Drawing


	For use with Vicor Micro-size modules	20265	0.007"		PDF \| DXF
	* NOT for use with VI-200 or VI-J00 modules