Hardware Secrets
Home | Camera | Case | CE | Cooling | CPU | Input | Memory | Mobile | Motherboard | Networking | Power | Storage | Video | Other
Content
Articles
First Look
Gabriel's Blog
News
Reviews
Tutorials
Main Menu
About Us
Awarded Products
Compare Prices
Datasheets
Dictionary
Download
Drivers
Forums
Links
Manufacturer Finder
Newsletter
On The Web
RSS Feed
Test Your Skills
Twitter
Newsletter
Subscribe today!
Search




Recommended
Switching Power Supplies A to Z
Switching Power Supplies A to Z, by Sanjaya Maniktala (Newnes), starting at $43.50
Home » Power
Huntkey Green Star 350 W (LW-6350HG) Power Supply Review
Author: Gabriel Torres
Type: Reviews Last Updated: December 17, 2008
Page: 5 of 10
$ Check REAL-TIME pricing for Thermaltake Technology ToughPower W0117 - power supply 750 Watt and other Internal Supplies at CDW.com W0117RU $.
CDW: $149.99 Directron: $139.99
Newegg: $114.99 CircuitCity: $179.99

Secondary Analysis

Huntkey LW-3550HG has four Schottky rectifiers on its secondary, two for the +12 V output, one for the +5 V output and one for the +3.3 V output.

Since this power supply uses a half-bridge configuration to calculate the maximum theoretical current each output can deliver is easy: all we need to do is to add the maximum current supported by all diodes.

The +12 V output is produced by two BYQ30E200 Schottky rectifiers connected in parallel, each one capable of handling up to 16 A at 104º C (8 A per internal diode). So the maximum theoretical current the +12 V output from this power supply can deliver is of 32 A or 384 W. Of course this math is just an exercise and the actual limit depends on several other factors. These rectifiers have a lower current limit compared to the ones used on the 400 W and 450 W Green Star models.

The +5 V output is produced by one S30D40C Schottky rectifier, which is capable of handling up to 30 A at 80º C (15 A per internal diode). So the maximum theoretical current the +5 V output from this power supply can deliver is of 30 A at 80º C or 150 W. This is the same component used on the 400 W and 450 W models.

The +3.3 V output is produced by one STPS3045CT Schottky rectifiers, which is capable of delivering up to 30 A at 155º C (15 A per internal diode). So the maximum theoretical current the +3.3 V output from this power supply can deliver is of 30 A at 155º C or 99 W. The 400 W and 450 W models use a different component with a higher dissipation area (TO-247 packaging instead of TO-220 as used on this power supply) but with the same current limits.

It is always good to remember that the real current/power limit for each output will depend on other factors, like the coils and the width of the printed circuit board traces.

Huntkey Green Star 350 W LW-6350HG
click to enlarge
Figure 10: +5 V rectifier and +12 V rectifier.

Huntkey Green Star 350 W LW-6350HG
click to enlarge
Figure 11: +12 V rectifier and +3.3 V rectifier.

On Figure 12 you can see the thermal sensor available below the secondary heatsink, in charge of changing the fan speed according to the power supply internal temperature.

Huntkey Green Star 350 W LW-6350HG
click to enlarge
Figure 12: Thermal sensor.

Instead of using a monitoring integrated circuit, the protections from this power supply are implemented discretely, using two LM339 voltage comparators. On Figure 13 you can also see the AZ7500B PWM controller, which is in charge of controlling the switching transistors.

Huntkey Green Star 350 W LW-6350HG
click to enlarge
Figure 13: Monitoring circuit.

The electrolytic capacitors from the secondary are from Teapo and Fcon and labeled at 105º C, as usual.

Pages (10): « 1 2 3 4 [5] 6 7 8 9 10 »
Print Version | Send to Friend | | Bookmark Article | Comments (8)

Related Content
  • Huntkey Green Star 450 W (LW-6450SG) Power Supply Review
  • Rocketfish 700 W Power Supply Review
  • Dynex 400 W Power Supply Review
  • Huntkey Green Star 550 W (LW-6550SG) Power Supply Review
  • Huntkey V-Power 550 W Power Supply Review

  • Recommended Deal.
    Power Supply Toughpower 750W W0117 750-Watt ATXThermaltake Technology ToughPower W0117 - power supply 750 Watt and other Internal Supplies at CDW.com W0117RU


    CDW: $149.99 Directron: $139.99
    Newegg: $114.99 CircuitCity: $179.99

    RSSLatest News
    Spire Announces CoolNess Laptop Cooler
    November 6, 2009 - 3:07 PM PST
    Mushkin Launches Memories with Copper-made Heatsink
    November 5, 2009 - 3:49 PM PST
    Super Talent Launches USB 3.0 Flash Memories
    November 5, 2009 - 3:47 PM PST
    VIA Announces Nano 3000 Processor Series
    November 5, 2009 - 3:42 PM PST
    Sapphire Announces Vapor-X HD 5870 and HD 5750 Video Cards
    November 5, 2009 - 3:38 PM PST
    Gelid Unveils Tranquillo CPU Cooler
    November 5, 2009 - 3:36 PM PST
    Noctua Intros NH-D14 Premium CPU Cooler
    November 3, 2009 - 8:14 PM PST
    Transcend Unveils DDR3-1333 Memory Kits
    November 3, 2009 - 7:57 PM PST
    EVGA Launches GeForce GTX 275 CO-OP PhysX Edition
    November 3, 2009 - 7:51 PM PST
    Akasa Launches Freedom Xone Mid-tower Case
    November 2, 2009 - 6:05 PM PST
    .:: More News ::.

    RSSLatest Content
    SilverStone Grandia GD04 Case Review
    Can We Trust the 80 Plus Certification?
    NZXT Gamma Case Review
    Patriot Box Office Media Player Review
    ASUS U-75HA 750 W Power Supply Review
    MSI P55-GD80 Motherboard
    Thermaltake Element V Case Review
    Nokia 7705 Twist Cell Phone Review
    Cooler Master Hyper TX3 CPU Cooler Review
    Some Pictures from Our Office
    Antec Two Hundred Case Review
    Corsair TX950W Power Supply Review
    XFX Radeon HD 5770 Video Card Review
    XFX Radeon HD 5750 Video Card Review
    Scythe Big Shuriken CPU Cooler Review

    Our Most Popular Articles
    Maximum CPU Temperature
    1,070,708 views
    How to Find Out Your Motherboard Manufacturer and Model
    695,077 views
    nVidia Chips Comparison Table
    671,370 views
    Connecting Two PCs Using a USB-USB Cable
    585,746 views
    How To Correctly Apply Thermal Grease
    555,898 views
    AMD ATI Chips Comparison Table
    554,078 views
    ATI Radeon X1300 Pro Review
    485,788 views
    ATI Radeon X1600 XT Review
    474,840 views
    How To Perform a BIOS Upgrade
    389,325 views
    Sempron vs. Athlon XP
    336,540 views

    Latest Threads in Our Forums
    Is it a vga problem or motherboard has shocked?
    by ftomsuk
    Patriot Box Office Media Player Review
    by cchjde
    Is it possible LCD Monitor leaked by itself ?
    by delta32
    Suddenly death syndrome and pendrives
    by Desert Fox
    better cpu cooler?
    by sam_wade07
    Video Transfer camcorder to PC
    by fjs559
    Spire Announces CoolNess Laptop Cooler
    by Hardware Secrets Team
    Can We Trust the 80 Plus Certification?
    by Merman
    SilverStone Grandia GD04 Case Review
    by Olle P
    Understanding Over Current Protection
    by Olle P
    .:: Visit Our Forums ::.


    © 2004-9, Hardware Secrets, LLC. All rights reserved.
    Advertising | Legal Information | Privacy Policy
    All times are Pacific Standard Time (PST, GMT -08:00)