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TI Home » TI E2E Community » Support Forums » Power Management » Digital Power » Digital Power Forum » Need Schematic for PTH08D110 Module
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Need Schematic for PTH08D110 Module

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Elden Crom
Posted by Elden Crom
on Jan 27 2009 13:07 PM
Prodigy20 points

--or the spec for the module

The PTH08D110 is a part on the 'EightChBuck-DCDC-SCH.pdf' from sprc678 (In the BOM for the TMDSDCDC8KIT, it's listed as 'TI to provide').  But I don't know what's inside.  And google and the TI site don't recognize the part number. My questions are,

a) How is the current measured, can it measure negative? Is it across the highside or from the lowside fet?

b) What happens when the Inhibit is driven low.

c) What is SRE?

I would like to use this dev kit to drive a three phase sensorless motor. To do so I need to allow one phase to float, ie both highside and lowside fett need to be off, so that I can read the voltage generated by that winding. Thus, I think I need to wire the Inhibt to a GPIO, assuming that I won't blow anything up.

 

 I think I found My answer....the part number in the schematic is wrong it's actually a PTD08A010W.

 

PTH08D110 EightChBuck-DCDC TMDSDCDC8KIT
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  • Dave Freeman
    Posted by Dave Freeman
    on Mar 17 2009 11:22 AM
    Prodigy225 points

    Yes, the part number is PTD08A010W.  This is a 10A power train module that uses a UCD7230 as a driver.  This driver has an integrated current sense amplifier.

    a) This module uses the DCR of the inductor to measure current.  The UCD7230 has a gain of ~48X.  It also applies a 0.6V bias to the current mesurment so that it can measure negative current.

    b) The inhibit input when driven low will turn off the output and will cancel the PWM and SRE input operation to the UCD7230.

    c) SRE is the Synchronous Rectifier Enable pin.  When this logic input is high, then the synchronous FET is operational allowing the module to both sink and source current.  When this input is low then the module can only supply current.

    This module is intended to be used with either a member of the UCD911X or UCD92XX family of digital controllers.

    Let me know if you need more information. 

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  • Elden Crom
    Posted by Elden Crom
    on Mar 27 2009 14:11 PM
    Prodigy20 points

     

    I'm not sure what happend to my other reply but it appears to have not posted.

    What I need is a similar pin out to the PTD08A010W (Temp, Current, PWM in, etc) but with an input range of about 40 to 42 Volts, with an output of 5 to 38 Volts....or simply a 0 to 28V output with current monitoring extending 5 volts on either side of the rails.

    If the module does not exist (the PTN04050C is getting closer, voltage and current wise, but futher away function wise), is there a chip similar to the UCD7230 that has a wider common mode voltage for current sense?

    (need around 8k to 10k units)

     

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  • Tom Guerin
    Posted by Tom Guerin
    on Apr 09 2009 15:33 PM
    Mastermind21350 points

    Mr. Elden Crom:

    I reviewed you request for  an hihg voltage  PTD08A010 with UCD7230. Thr e are no plans to develop a module with thsi capability.

    However, I have attached a link to a power solution, using the TPS54160 IC.1.5A wide input voltage (60V to lower voltages to 58V output  voltage

    http://focus.ti.com/docs/prod/folders/print/tps54160.html

    Regards

    Tom Guerin

    TPS54160
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  • Changling WU
    Posted by Changling WU
    on Aug 11 2009 10:01 AM
    Prodigy110 points

    Dear Tom,

    In my project ,power stage is controled by UCD7230. vin =15volt,double phase vout,FS=1MHZ,L=0.5uH,C=470uf*5+47uf*10,I want to get a adjustable Vout of 0 to 12volt. in the course of regulating, ofen burn down the low side MOSFET,ucd7230 is hot too, it will be better when configure single phase.Could you share the reference circuit of ucd7230 and reference configure with me,Could you share me the  PTH08D110 SCH? thanks !

    Custom Power Stage PTH08D110 waiting for reply
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  • Tom Guerin
    Posted by Tom Guerin
    on Aug 11 2009 11:45 AM
    Mastermind21350 points

    Mr. Changling WU :

    I receved this  e-mail concerning the PTD08A010  .There are many concerns about this high frequency  operation an   voltage range. The UCD 7230 is limited  0.7V to 3.6V Vout .THePTD serise limited to 0.7V to 3.6V Vout. See teh prodcut UCD 7230 wEB site for details.

    This includes the  minimum maximum Vout data  and      http://focus.ti.com/docs/prod/folders/print/ucd7230.html pages under propagation  delay and maximum Vin to Vout .

    Regards

    Tom Guerin

    share the EVM sechmatic with me
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  • Changling WU
    Posted by Changling WU
    on Aug 23 2009 04:35 AM
    Prodigy110 points

    Dear Tom,

    I can not find any information that ucd7230 can not support 12volt vout in spec. in our project ,the power stage that engaged in ucd7230 can already support 12volt vout ,but the configure is single phase , As i want get more current output (about 50A),so i need double phase configure ,but it is not stable sometime can not get any vout, MOSFET was often  burned down ,by the way ,ucd9240 is unable to sense correctly current of powr stage,what configuration does the ucd9240 need? do you have any suggestion for me? thank you!

     

     

    waiting for reply ucd7230 double phase configure issue
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  • Tom Guerin
    Posted by Tom Guerin
    on Aug 25 2009 15:02 PM
    Verified Answer
    Verified by Richard Garvey
    Mastermind21350 points
    1. Dear Changling Wu:

    Thansk for the-mail.

    The UCD specification on page 5 under maximum Vin  of 15V  has the analog or Vout  limited 0.7V to 3.6V. It cannot accept vout of greater than  3.6V Vout.

    http://focus.ti.com/docs/prod/folders/print/ucd7230.html. See the  link with data on the  UCD7230.

    best regards

    Tom Guerin

     

     

     

    UCD9240EVM
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