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You can’t totally depend on 8 diodes to reduce EMF,because its effect is not great. If you want to know more about its function, please provide more details about your problems.

Yes, THB8128 is similar with THB6064AH.If you want to know more,you can see the datasheet.

Some datasheet as attached,you can get all the info about THb8128 from them.

Any questions,just post...

If everyone have tech questions about THB6064AH, just post here.
Luc. James and me will give free tech support all the time.

Hope all of you will enjoy your work and life.

What do you want to know?

Maybe you still have a trust issue, that's OK.You can search THB6064ah in www.ebay.com

Just buy them from Ebay,but it's higher than buy from company directly. :)...

Dear Sirs,

Good news for all of you. Price-off promotion is coming.
There is a new quotation for THB6064AH,THB6128,THB7128,THB8128 from this week. If you want to know the details of the...

Dear Luc,

Due to the volatage and current of the evaluation PCB is not very big,so it is unecessary to use it.

By the way, you really did a very good job.

Yes, the choice of diodes is correct.

We usually use Schottky diodes. But I think your diodes is OK.It can help reduce heat by several degrees temperature.Obviously, it don't meet your...

When the reverse recovery is 30nsec, it is helpful for reducing heat.If you still think the chip is too hot,you can add the resistor value of PIN23. By this way, the decay time will be longer.

Dear Luc.

Three factors have influenced temperature of chip:reverse recovery time of diodes, decay mode and decay time. 30nsec. is too fast,so you can change the decay time in order to reduce the...

Dear Luc.

Could you please tell me Max reverse recovery time for your diodes? It has en effect in heat cooling.

Hey James,

How about your board? Is it on working?
:)

Yes,you got it.The heat will be reduced by lowering the chop frequency.But maybe it will cause hiss noise.So you need to find a balance point.

I think your heatsink is not big enough.You 'd beter...

Dear Luc,

Sorry for the delay reply,duo to the business trip.

I think you'd better to use 2X0.47ohm 2512 in parallel instead of 1206.

If necessary, you should use schottky diodes or Fast...

Generrally,the layout of pins are defined from left to right or by counter-clockwise direction.

Hi,

In your PCB, ground of PIN2 is too far from ground of PIN13&17. It will affect the motor running.

Hi Vegipete,

Yes,the REST signal is active HIGH, NOT active LOW.
The datasheet shows:When the RESET signal goes Low level, output goes Initial state (Initial state: A Channel output current is...

James,

Please see the picture,which is the chip dimension. It shows the space between the pin is 2.54mm,not 2mm. You can find it from datasheet page41.

Sorry I failed to upload pictures last time.:D

Oh,My God.

James, I said the layout & pin out were correct,because I thought the chip was mounted on the back side of board. I'm very sorry that I didn't confirm with you before.

Please see the...

Hey,guys.

I think John's revise is much better.:)

If you move C5, it will cause more complex connections or maybe some other new questions.It's just my own opinion for your reference.
...

Dear James,

The pinout and layout of the THB6064AH pins is correct.
There is no problem with the small M+ filter caps being on the opposite side. Just pay attention to the soldering.

However,...

James,

I don't know the value of R5,so I can't calculate the vref on PIN5.Maybe it's over 3V.
If you can keep Vref(Pin5 ) is between 0~3v,it's OK.

lihaijiang

Toshiba company is producing many custmised products,However, Beijing Haihuabiyuan Science and Technology Development Co,Ltd. is the only one whose has the sales right to sell THB6064H (TB6564HQ) and...

So glad to hear the disscussion about THB6064AH(TB6564AHQ)

Hope all of you will be satisfied with it.

Hello vegipete,

As you known, there is some differences between THB6064AH and THB6064H as following:

THB6064AH:
When IC detects CLK frequency less than 2.0Hz or no pulse in 0.5s, output of...

Hello vegipete,

1. Pull-DOWNs resistors can keep low level for the chip.
2. In order to protect the power supply (not for chip), the fuse should be used here.
3. Pin 25, DOWN , can input a low...

Hi,James.

If the voltage is 24V, I think RN3 should be lower than 10K, otherwise the current will be a little high. You just need keep the current is between 5mA-10mA. (Current=Voltage of VMA or...

Hello James,

1.Yes,you can delete C10.
2.When the votage is below 24V, RN2 and RN3 can be 2K7.

If you need ,you can add test point on PIN 11&15 of the board .

Hello James,

Thank you very much for post these here. Hope you can finish your board ASAP.As your request,answers as following:

1.One of C4,C5 and C11,C12 is 47u;the other depends on the...