My Account  Cart Contents  Checkout  
  Top » Catalog » Modders Shoppe » Electronics-Converters » Converter Boards » BS Log In |  Cart Contents  |  Checkout | 
Categories
Completed Assemblies->
Fixed Lighting->
Modders Shoppe->

View All Products ->

All Products sorted by Categories ->

All Products sorted by Manufacturers ->
Search
 
Use keywords to find the product you are looking for.
Specials more

Super MJ LED (4-die) - Uncut 5-pack
 $22.00  $19.80 
Aleph 19 Head Kit-Black
Aleph 19 Head Kit-Black
 $49.00  $40.00 

MJ Cutdown High-power 5mm LED 5 pack
 $20.00  $18.00 

Krazy K2 Sale UYAN
 $4.00  $3.50 

Assembled Aleph 19 Head -Natural
 $53.00  $50.00 
Firefly CR2 power pack (seconds)
Firefly CR2 power pack (seconds)
 $27.00  $22.95 
Aleph 19 Head Kit-Natural
Aleph 19 Head Kit-Natural
 $49.00  $40.00 
Firefly CR2 power pack (premium)
Firefly CR2 power pack (premium)
 $36.00  $30.60 

FF 2-level switch-16 ohm
 $10.00  $8.50 
Sandwich Shoppe 2-Cell PR Bulb
Sandwich Shoppe 2-Cell PR Bulb
 $9.90  $9.90 
Control Scan
Increase Sales with Verified Secure Seal from Control Scan!

BLUE SHARK Step up Converter Board

 [BS]
 $25.00 

Description

BLUE SHARK Step up Converter Board

Blue Shark is the new, cooler version of the Shark. Takes a big bite out of driving multiple  LEDs in series. Great for use in flashlight and fixed lighting applications.

Size: 0.750 inch(19.1mm) diameter

Note:   Blue sharks shipped after July 18, 2010 will have the 2 diode modification.  All Blue Sharks shipped before this date may have thermal runaway with input current over 2.5A.

Specifications:

  • Input voltage range: 2.7V - ~25V (Vin < Vout)
  • Maximum IC switch current: ~4A (input ~3.2A)
  • Output Current: Adjustable on board trim pot - 50mA - 980mA
  • Output Voltage: ~32V
  • Regulation: Voltage or Current.
  • Maximum component height 3mm
  • Raises Vout from 22.5V and improves thermal performance over standard Shark
  • Requires Heatsinking

Optional:

  • Remove trim pot
  • Change sense resistor for max output current. (standard 0.1 ohm = 1A. 0.12 = 0.833mA, 0.15 = 666mA)
  • Change output capacitor (to reach ~32V)

This will put open circuit Vout to ~32V and provide no load protection. 3-7 Lux3s/Cree XRE/Seoul P4s can be driven with this configuration as long as the boost input current does not exceed 3-4A. You can drive 5-6 Lux3s in series with 9V - 12V input and drive the string at 1A.

For 4-die LEDs:

ie.:  One Blue Shark can drive 2 Cree XM-L with a upgraded output capacitor configuration >25V.  See option.

Do not wire the converters in series.  You can use one Remora with 2 Blue Sharks.

The Blue Shark has better thermal properties and heat dissipation. It runs cooler. Comes with the copper C installed.

The Blue shark will work with the Remora too.

The trim pot can be removed and an external 20K pot can be hooked up allowing control of the
converter board. The trim pot input can also be PWM controlled via a microprocessor.


To thermally bond Blue Shark or Shark Buck to a heat sink, use a super thin (paper thin or thinner) layer of thermal glue.

When mounting a Blue Shark, Shark Buck etc to the heat sink use an ultra-thin layer of adhesive for maximum conductivity.  Too thick of a layer is like creating an air gap.

For proper mounting the converter board should be clamped.  Thermal interface to heat sink must be less than 15C/W.

Arctic Alumina Thermal Adhesive (2 Part Epoxy)
Arctic SILVER Thermal Adhesive 7g set
Arctic Alumina Thermal Adhesive (2 Part Epoxy) Medium Cure

 

 ** The rule of thumb still applies where the full battery range (fresh to depleted) should be greater than 1/2 of Vf of the LED string. **

Add a note in comments specifying resistor(s) want to change.

Shark FAQs here.

Questions and Answers on CPF

Testing set up on CPF  post #378

 
The technique I use to test the converter board safely should be done prior to any hookup to ensure the converter is fully functional.

Most boards shipped mid this year or so have been pre-tested. Still, pre-tested or not I would still test it before using it.

The ideal method for the Shark buck is the use a power supply set at 6V with the current limiting set to 150mA or so. At this current

there is little risk in damaging the converter board even if there is a problem.

Wire the converter board to the power supply and an LED. Any standard 1W,3W LED with Vf around 3.2V will be fine for this test.

Apply power. If the LED lights and the power supply current limits turn the trim pot till the power supply comes out of current limit. Verify the trim pot adjusts from near zero LED brightness to something brighter until current limiting is reached. If there is control over this range the converter is fully functional.

The same test setup can be used to safely test the Blue Shark except the LED load needs to be three LEDs in series. Again after power is applied the LEDs should light up and you should be able to turn the trim pot to get the LEDs to goto near zero light output and have some brightness control range up to the point the power supply current limits. If this work you can raise the current limit to 300mA and verify control over a larger range.

If you don't have a power supply the next best thing is to use something like a 10-20 ohm 2W power resistor in series with a 6V battery pack. The 40 ohm resistor should provide enough protection even if the converter is shorted.

Warning:  Always make sure the max current is never exceeded from a fresh battery to fully depleted battery condition.

Available Options:
Change Output Capacitor:
Change Shark Resistor:
Write in levels:
Remove trimpot:

Images

BLUE SHARK Step up Converter Board BLUE SHARK Step up Converter Board BLUE SHARK Step up Converter Board

Mfg Info

Manufacturer Info
Other products

Extra Info

Comments
There are currently no product reviews
Write a review on this product!


Extra Info
This product was added to our catalog on Thursday 22 May, 2008.
Notify me of updates to BLUE SHARK Step up Converter Board
Tell someone you know about this product.


Add to Wish List
 $25.00  Quantity:     
Customers who bought this product also purchased
Information
Contact Us->
Information Pages
Shipping
Shopping Cart more
0 items
Your Account
Your Email Address
Your Password
Best Sellers
01.Kroll Tailcap Switch (New and improved)
02.Fraen LP
03.EP O-Ring 18
04.Silicon 15 O-ring for Aleph Power pack
05.Sandwich Retaining Oring
06.Silicon 16 O-ring for PD
07.Retaining ring
08.O-ring-FF Better Fit 15
09.Arc Threaded Ring (limit 2 per person)
10.ECan EN Plated

Copyright © 2017 Chain Reaction Ecommerce, Inc. Powered by CRE Loaded
Using CRE Loaded PCI B2B v6.4.1