XL7005A vs XL7005

[capwizard]

XL7005A: 0.4A 150KHz 80V Buck DC to DC Converter, PWM buck (step-down) DC/DC converter, capable of driving a 0.4A load with high efficiency, the heart of DPS5015.
https://cdn.badcaps-static.com/pdfs/...6da4f5ee4d.pdf

XL7005: 0.5A 200KHz 65V Buck DC to DC Converter 200KHz fixed frequency
PWM buck (step-down) DC/DC converter, capable of driving a 0.5A load with high efficiency

[budm]

Re: XL7005A vs XL7005

https://www.badcaps.net/forum/showpo...81&postcount=4

[capwizard]

Re: XL7005A vs XL7005

Nice, struggling to buy one more toy.

[stj]

Re: XL7005A vs XL7005

interesting, 80v limit at the expense of a bit of efficiency / transformer size.

[capwizard]

Re: XL7005A vs XL7005

Because is buck (step-down) converter, where you gonna find A 60v 15A switch power supply? Let me know, I want one,too....

PS: 5 ATX power supply add together...I am waiting for boost one.......

[stj]

Re: XL7005A vs XL7005

55-0-55 toroid from an old amplifier, or a 48v switching psu with it's output tweaked.
yes, i already thought about this problem.

[capwizard]

Re: XL7005A vs XL7005

Wow, you're smart...I never thought about that and throw away 2-3 of them, in fact voltage ripple is better than switch power, I might change my mind..

[capwizard]

Re: XL7005A vs XL7005

Pic1-2 those are junks, now i test 12v car amp is use this pic3-5 ATX power supple, customer face looks strange, so I will use old stereo amp. build power supple right inside the DENON's case......

[capwizard]

Re: XL7005A vs XL7005

DPS 5015 Parts came, Smaller than what I thought.

Pioneer stereo vsx-519v has no sound, customer abandoned, I gonna use the power supply as sti said : "55-0-55 toroid from an old amplifier," . found AC 39.66v X 1.414 = DC 56v -0-56v, It could be used as a dual 15A power supply. Thanks sti.

If I fix the Amp, I can use the power supply and linsen to the music at same time...........Voltage I set up to 12.35v current at 10A( on top of the meter small letters, set: xxxx xxxxx )..........Don't bug me , will change thicker input wires................................

PS: My recommendation is: don't but it, It can't survive even at 5A for long period of time! (It is A toy.)

[sam_sam_sam]

Re: XL7005A vs XL7005

What this power supply will not put 10 amps for very long what happens I also bought one

I want to run it at 10 amps for very long times

So what amperage can safely run it at for long periods of time

[capwizard]

Re: XL7005A vs XL7005

"what happens I also bought one, " YOU are my body!..............................

The MOSFET legs (pins) under the fan need to be resolder, it already have ring on legs even it is brand new. If you are seriously, you can put bigger TO-220 MOSFETs on it (four MOSFETs bridge) will give more power.

"So what amperage can safely run it at for long periods of time"
extra large heat sink or oil cooler for cpu.


Measuring the Voltage Ripple of the DPS5015
https://www.youtube.com/watch?v=WpbkxL0p7u8

http://www.eevblog.com/forum/testgea...ps5015-50v15a/

http://lygte-info.dk/review/Power%20...arts%20UK.html
Compared to professional units it is missing a lot: Lower noise, both numeric keypad and encoded, 4 terminal connections, computer control, larger display. But for the price it is very good and works fine.

http://lygte-info.dk/review/Power%20DPS5015%20UK.html

[capwizard]

Re: XL7005A vs XL7005

Need help to find the specification of this mosfet which is one of the (four MOSFETs Full Bridge)? at Pic8

Pic last one: The MOSFET legs (pins) under the fan needs to be resolder, it already has ring on leg even it is brand new (with never load)

PS: look! How small it is!

Hope! Can use Door Hinge Rework Station take out the microcontroller and read Firmware on it then ZIP for you guys. Anyone has idea of those pins ( V GCD) or the other one (Rx B TX) at (pic2) . Can I read it with my TL866A ? and HOW?

[capwizard]

Re: XL7005A vs XL7005

microcontroller is 32f100 in LQFP48 packing

https://cdn.badcaps-static.com/pdfs/...a875e57a69.pdf


PS: Anyone has idea of those pins ( V GCD) or the other one (Rx B TX) at (pic2) . Can I read it with my TL866A ? and HOW?

PS: TX is at pin30, RX is at pin 31, (pin30 is PA9 pin31 is PA10?).

Embedded SRAM
Up to 8 Kbytes of embedded SRAM accessed (read/write) at CPU clock speed with 0 wait states.

[budm]

Re: XL7005A vs XL7005

It is not hooked up as full bridge, look at how Gate of T1 and T4 are tied together, also how the Drain of T2, T3 are tied together and connected to T1 Drain.

[capwizard]

Re: XL7005A vs XL7005

You are good and Youre really pay attention to detail. YES it is A Half-Bridge.......you're right again..............

Pic1 is U02 show 5106 is LM5106 100-V Half-Bridge Gate Driver With Programmable Dead-Time

LM5106
https://cdn.badcaps-static.com/pdfs/...bb5162a5d8.pdf

NCP5106A
https://cdn.badcaps-static.com/pdfs/...c8362829bb.pdf


PS: last pic can see the U02 NO.

[budm]

Re: XL7005A vs XL7005

So that 10-pin IC where the 4 MOSFETs are, is it XL7005? 5106?
Never mind, I see it now.

[capwizard]

Re: XL7005A vs XL7005

One question? why uses A half-bridge driver not the full bridge driver?

[budm]

Re: XL7005A vs XL7005

Full Bridge, both terminals of outputs are not ref to GND, V drops on the load is also about 2x the supply Voltage, they are both hot, same basic as amplifier set to bridge mode.
You need to see how those 4 MOSFETs are actually connected.

[capwizard]

Re: XL7005A vs XL7005

"V drops on the load is also about 2x the supply Voltage." very good!

PS: Ive traced the circuits, it like twins, two MOSFETs put together to increase current, and it only has two driver signals (Lo and Hi) (full bridge needs 4 driver signals.).



My home work.

provides characterization data of its half−bridge driver to show the maximum negative voltage the driver can safely operate with. To prevent the negative injection, it is the designer duty to verify that the amount of negative voltage pertinent to his/her application does not exceed the
characterization curve we provide, including some safety margin.

Confirm zero-voltage switching during all operating conditions
http://www.powerguru.org/the-half-br...cuit-revealed/

Half Bridge vs Full Bridge
https://cdn.badcaps-static.com/pdfs/...aa877cf64a.pdf

[capwizard]

Re: XL7005A vs XL7005

EEVblog #900 - STM32 ARM Development Board
https://www.youtube.com/watch?v=mkx4qZCCHqI

I don't understand what he's saying? the next one is better

STM32 dev board first steps (linux)
https://www.youtube.com/watch?v=xsYIh1sunso

PS: Can we use Arduino to read it or ST-Link V2?

PS: Anyone has idea of those pins ( V GCD) or the other one (Rx B TX) at (pic2) . Can I read it with my TL866A ? and HOW?

PS: TX is at pin30, RX is at pin 31, (pin30 is PA9 pin31 is PA10?).

How to Use ST-Link V2 Utility to program your STM8 and STM32 MCU
https://www.youtube.com/watch?v=d9MftOa28Pw
microcontroller is 32f100 in LQFP48 packing



Discovery[/url] kit for STM32F100 Value line


STM32F100xx value line Flash programming
https://cdn.badcaps-static.com/pdfs/...10a9e60c7c.pdf

STM32F10xxx/20xxx/21xxx/L1xxxx Cortex-M3 programming manual
https://cdn.badcaps-static.com/pdfs/...27f87a1e61.pdf