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Inverter IC recommendation

KIM Andy
Expert 2530 points
Other Parts Discussed in Thread: TPS61175, CD4047B, TPL7407L

HI

My customer now wants to develop an inverter to operate a 30V UV lamp.

Is there an IC that can be recommended for inverter development of about 10W with input voltage of 12Vdc and output of 30V/0.3A?

  • 0
    TI__Guru* 78715 points
    Hi Kim,

    Do you mean 12Vdc to 30Vac? I am afraid our webmaster misunderstand your term "inverter", which sometimes also means +12Vdc to -30Vdc conversion.

    Let me try to direct this to the right group to support you.

    Best Regards,
    Youhao Xi, Applications Engineering
  • 0
    TI__Mastermind 21565 points
    Hi KiM Andy:
    I guess you want a boost converter, am I right?
    TPS61175 may help you.
  • 0 in reply to Minqiu Xie
    Expert 2530 points

    Hi
    thank you for your quick reply.
    I'm not looking for boost ic ...;
    inverter related solution.
    The input voltage is DC 12V and the output voltage is AC 30V.
    The inverter circuit using TI's CD4047 + ULN2004 was found on GOOGLE.
    But the CD4047 is too old IC. Is there a solution to this?

  • 0 in reply to KIM Andy
    Prodigy 5 points

    Hello Andy,
    I see the similar circuits you found on the web.
    TI's archives do no yield any 30VAC output designs to fit your need.
    What frequency and current are you needing to drive the UV LED?
          10W with input voltage of 12Vdc and output of 30V/0.3A, is this RMS or peak current.
    Can you provide the UV LED part number?

    The CD4047 + ULN2004 combination is still a valid design, both devices are active and can be purchased.
    www.ti.com/.../CD4047B
    www.ti.com/.../ULN2004A
    There are newer devices to replace these two.

    CD4047B CMOS Low-Power Monostable/Astable Multivibrator
    VCC max is 18V for this and some of the other CDxxxx devices.
    Newer multivibrators have a lower VCC rating, ~6V
    All TI Multivibrators may be found here:
    www.ti.com/.../products.html


    ULN2004 is a 50V, 500mA Darlington low side driver.
    All TI low side switches may be found here:
    www.ti.com/.../products.html
    Suggested newer replacement is TPL7407L, 40V, 600mA low side NMOS driver
    www.ti.com/.../description