novaBBS - sci.electronics.design - Re: nice little switcher

nice little switcher

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From: jlar...@highlandSNIPMEtechnology.com (John Larkin)
Newsgroups: sci.electronics.design
Subject: nice little switcher
Date: Wed, 15 Feb 2023 08:45:29 -0800
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by: John Larkin - Wed, 15 Feb 2023 16:45 UTC

https://www.dropbox.com/s/0h88ikjnbxcisl3/CUI_PXO_DC-DC.jpg?raw=1

https://www.mouser.com/ProductDetail/CUI-Inc/PXO7805-500-S?qs=Y0Uzf4wQF3l34%252B7eogTBxw%3D%3D

This is the 5 volt out version but there are others. It can also
convert plus to minus.

I can't buy the parts for three times that price.

Re: nice little switcher

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From: klausk...@hotmail.com (Klaus Vestergaard Kragelund)
Newsgroups: sci.electronics.design
Subject: Re: nice little switcher
Date: Wed, 15 Feb 2023 18:30:57 +0100
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by: Klaus Vestergaard Kr - Wed, 15 Feb 2023 17:30 UTC

On 15-02-2023 17:45, John Larkin wrote:
> https://www.dropbox.com/s/0h88ikjnbxcisl3/CUI_PXO_DC-DC.jpg?raw=1
>
> https://www.mouser.com/ProductDetail/CUI-Inc/PXO7805-500-S?qs=Y0Uzf4wQF3l34%252B7eogTBxw%3D%3D
>
> This is the 5 volt out version but there are others. It can also
> convert plus to minus.
>
> I can't buy the parts for three times that price.
>
Nice switcher, yes.

Can you see the part number of the switcher IC? (would be interesting)'

By the way, notice that the output ripple below 20% load is a whopping
300mVpp. Normally one would like to have that well below 100mVpp

Re: nice little switcher

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From: jlar...@highlandSNIPMEtechnology.com (John Larkin)
Newsgroups: sci.electronics.design
Subject: Re: nice little switcher
Date: Wed, 15 Feb 2023 12:15:50 -0800
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by: John Larkin - Wed, 15 Feb 2023 20:15 UTC

On Wed, 15 Feb 2023 18:30:57 +0100, Klaus Vestergaard Kragelund
<klauskvik@hotmail.com> wrote:

>On 15-02-2023 17:45, John Larkin wrote:
>> https://www.dropbox.com/s/0h88ikjnbxcisl3/CUI_PXO_DC-DC.jpg?raw=1
>>
>> https://www.mouser.com/ProductDetail/CUI-Inc/PXO7805-500-S?qs=Y0Uzf4wQF3l34%252B7eogTBxw%3D%3D
>>
>> This is the 5 volt out version but there are others. It can also
>> convert plus to minus.
>>
>> I can't buy the parts for three times that price.
>>
>Nice switcher, yes.
>
>Can you see the part number of the switcher IC? (would be interesting)'

It's marked 1301 G7

>
>By the way, notice that the output ripple below 20% load is a whopping
>300mVpp. Normally one would like to have that well below 100mVpp

It needs added external caps, no big deal.

I do plan to test them and learn more about actual behavior. It
appears to be not a synchronous switcher.

Re: nice little switcher

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Subject: Re: nice little switcher
From: langw...@fonz.dk (Lasse Langwadt Christensen)
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by: Lasse Langwadt Chris - Wed, 15 Feb 2023 20:26 UTC

onsdag den 15. februar 2023 kl. 21.16.01 UTC+1 skrev John Larkin:
> On Wed, 15 Feb 2023 18:30:57 +0100, Klaus Vestergaard Kragelund
> <klau...@hotmail.com> wrote:
>
> >On 15-02-2023 17:45, John Larkin wrote:
> >> https://www.dropbox.com/s/0h88ikjnbxcisl3/CUI_PXO_DC-DC.jpg?raw=1
> >>
> >> https://www.mouser.com/ProductDetail/CUI-Inc/PXO7805-500-S?qs=Y0Uzf4wQF3l34%252B7eogTBxw%3D%3D
> >>
> >> This is the 5 volt out version but there are others. It can also
> >> convert plus to minus.
> >>
> >> I can't buy the parts for three times that price.
> >>
> >Nice switcher, yes.
> >
> >Can you see the part number of the switcher IC? (would be interesting)'
> It's marked 1301 G7
> >
> >By the way, notice that the output ripple below 20% load is a whopping
> >300mVpp. Normally one would like to have that well below 100mVpp
> It needs added external caps, no big deal.
>
> I do plan to test them and learn more about actual behavior. It
> appears to be not a synchronous switcher.

https://www.mornsun-power.com/public/uploads/pdf/SCM1301A.pdf maybe?

Re: nice little switcher

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From: jlar...@highlandSNIPMEtechnology.com (John Larkin)
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Subject: Re: nice little switcher
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by: John Larkin - Wed, 15 Feb 2023 20:58 UTC

On Wed, 15 Feb 2023 12:26:04 -0800 (PST), Lasse Langwadt Christensen
<langwadt@fonz.dk> wrote:

>onsdag den 15. februar 2023 kl. 21.16.01 UTC+1 skrev John Larkin:
>> On Wed, 15 Feb 2023 18:30:57 +0100, Klaus Vestergaard Kragelund
>> <klau...@hotmail.com> wrote:
>>
>> >On 15-02-2023 17:45, John Larkin wrote:
>> >> https://www.dropbox.com/s/0h88ikjnbxcisl3/CUI_PXO_DC-DC.jpg?raw=1
>> >>
>> >> https://www.mouser.com/ProductDetail/CUI-Inc/PXO7805-500-S?qs=Y0Uzf4wQF3l34%252B7eogTBxw%3D%3D
>> >>
>> >> This is the 5 volt out version but there are others. It can also
>> >> convert plus to minus.
>> >>
>> >> I can't buy the parts for three times that price.
>> >>
>> >Nice switcher, yes.
>> >
>> >Can you see the part number of the switcher IC? (would be interesting)'
>> It's marked 1301 G7
>> >
>> >By the way, notice that the output ripple below 20% load is a whopping
>> >300mVpp. Normally one would like to have that well below 100mVpp
>> It needs added external caps, no big deal.
>>
>> I do plan to test them and learn more about actual behavior. It
>> appears to be not a synchronous switcher.
>
>https://www.mornsun-power.com/public/uploads/pdf/SCM1301A.pdf maybe?

That must be it. 700 KHz is right.

If I do my own regs, I'd use the TI TPS54302 family parts,
spread-spectrum synchronous switchers.

Re: nice little switcher

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Subject: Re: nice little switcher
From: langw...@fonz.dk (Lasse Langwadt Christensen)
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by: Lasse Langwadt Chris - Wed, 15 Feb 2023 21:25 UTC

onsdag den 15. februar 2023 kl. 21.58.26 UTC+1 skrev John Larkin:
> On Wed, 15 Feb 2023 12:26:04 -0800 (PST), Lasse Langwadt Christensen
> <lang...@fonz.dk> wrote:
>
> >onsdag den 15. februar 2023 kl. 21.16.01 UTC+1 skrev John Larkin:
> >> On Wed, 15 Feb 2023 18:30:57 +0100, Klaus Vestergaard Kragelund
> >> <klau...@hotmail.com> wrote:
> >>
> >> >On 15-02-2023 17:45, John Larkin wrote:
> >> >> https://www.dropbox.com/s/0h88ikjnbxcisl3/CUI_PXO_DC-DC.jpg?raw=1
> >> >>
> >> >> https://www.mouser.com/ProductDetail/CUI-Inc/PXO7805-500-S?qs=Y0Uzf4wQF3l34%252B7eogTBxw%3D%3D
> >> >>
> >> >> This is the 5 volt out version but there are others. It can also
> >> >> convert plus to minus.
> >> >>
> >> >> I can't buy the parts for three times that price.
> >> >>
> >> >Nice switcher, yes.
> >> >
> >> >Can you see the part number of the switcher IC? (would be interesting)'
> >> It's marked 1301 G7
> >> >
> >> >By the way, notice that the output ripple below 20% load is a whopping
> >> >300mVpp. Normally one would like to have that well below 100mVpp
> >> It needs added external caps, no big deal.
> >>
> >> I do plan to test them and learn more about actual behavior. It
> >> appears to be not a synchronous switcher.
> >
> >https://www.mornsun-power.com/public/uploads/pdf/SCM1301A.pdf maybe?
> That must be it. 700 KHz is right.
>
> If I do my own regs, I'd use the TI TPS54302 family parts,
> spread-spectrum synchronous switchers.

nice, JLC has plenty in stock, you could probably have a board for $0.5

https://jlcpcb.com/partdetail/TexasInstruments-TPS54302DDCR/C311983
https://jlcpcb.com/partdetail/Cenker-CKST0603_10uHM/C3002639
https://jlcpcb.com/partdetail/14236-CL31A106KBHNNNE/C13585

Re: nice little switcher

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From: jlar...@highlandSNIPMEtechnology.com (John Larkin)
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Subject: Re: nice little switcher
Date: Wed, 15 Feb 2023 13:49:42 -0800
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by: John Larkin - Wed, 15 Feb 2023 21:49 UTC

On Wed, 15 Feb 2023 13:25:20 -0800 (PST), Lasse Langwadt Christensen
<langwadt@fonz.dk> wrote:

>onsdag den 15. februar 2023 kl. 21.58.26 UTC+1 skrev John Larkin:
>> On Wed, 15 Feb 2023 12:26:04 -0800 (PST), Lasse Langwadt Christensen
>> <lang...@fonz.dk> wrote:
>>
>> >onsdag den 15. februar 2023 kl. 21.16.01 UTC+1 skrev John Larkin:
>> >> On Wed, 15 Feb 2023 18:30:57 +0100, Klaus Vestergaard Kragelund
>> >> <klau...@hotmail.com> wrote:
>> >>
>> >> >On 15-02-2023 17:45, John Larkin wrote:
>> >> >> https://www.dropbox.com/s/0h88ikjnbxcisl3/CUI_PXO_DC-DC.jpg?raw=1
>> >> >>
>> >> >> https://www.mouser.com/ProductDetail/CUI-Inc/PXO7805-500-S?qs=Y0Uzf4wQF3l34%252B7eogTBxw%3D%3D
>> >> >>
>> >> >> This is the 5 volt out version but there are others. It can also
>> >> >> convert plus to minus.
>> >> >>
>> >> >> I can't buy the parts for three times that price.
>> >> >>
>> >> >Nice switcher, yes.
>> >> >
>> >> >Can you see the part number of the switcher IC? (would be interesting)'
>> >> It's marked 1301 G7
>> >> >
>> >> >By the way, notice that the output ripple below 20% load is a whopping
>> >> >300mVpp. Normally one would like to have that well below 100mVpp
>> >> It needs added external caps, no big deal.
>> >>
>> >> I do plan to test them and learn more about actual behavior. It
>> >> appears to be not a synchronous switcher.
>> >
>> >https://www.mornsun-power.com/public/uploads/pdf/SCM1301A.pdf maybe?
>> That must be it. 700 KHz is right.
>>
>> If I do my own regs, I'd use the TI TPS54302 family parts,
>> spread-spectrum synchronous switchers.
>
>nice, JLC has plenty in stock, you could probably have a board for $0.5
>
>https://jlcpcb.com/partdetail/TexasInstruments-TPS54302DDCR/C311983
>https://jlcpcb.com/partdetail/Cenker-CKST0603_10uHM/C3002639
>https://jlcpcb.com/partdetail/14236-CL31A106KBHNNNE/C13585

How can they sell them for 18 cents, when we are paying 61?

Re: nice little switcher

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Subject: Re: nice little switcher
From: langw...@fonz.dk (Lasse Langwadt Christensen)
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by: Lasse Langwadt Chris - Wed, 15 Feb 2023 22:00 UTC

onsdag den 15. februar 2023 kl. 22.49.51 UTC+1 skrev John Larkin:
> On Wed, 15 Feb 2023 13:25:20 -0800 (PST), Lasse Langwadt Christensen
> <lang...@fonz.dk> wrote:
>
> >onsdag den 15. februar 2023 kl. 21.58.26 UTC+1 skrev John Larkin:
> >> On Wed, 15 Feb 2023 12:26:04 -0800 (PST), Lasse Langwadt Christensen
> >> <lang...@fonz.dk> wrote:
> >>
> >> >onsdag den 15. februar 2023 kl. 21.16.01 UTC+1 skrev John Larkin:
> >> >> On Wed, 15 Feb 2023 18:30:57 +0100, Klaus Vestergaard Kragelund
> >> >> <klau...@hotmail.com> wrote:
> >> >>
> >> >> >On 15-02-2023 17:45, John Larkin wrote:
> >> >> >> https://www.dropbox.com/s/0h88ikjnbxcisl3/CUI_PXO_DC-DC.jpg?raw=1
> >> >> >>
> >> >> >> https://www.mouser.com/ProductDetail/CUI-Inc/PXO7805-500-S?qs=Y0Uzf4wQF3l34%252B7eogTBxw%3D%3D
> >> >> >>
> >> >> >> This is the 5 volt out version but there are others. It can also
> >> >> >> convert plus to minus.
> >> >> >>
> >> >> >> I can't buy the parts for three times that price.
> >> >> >>
> >> >> >Nice switcher, yes.
> >> >> >
> >> >> >Can you see the part number of the switcher IC? (would be interesting)'
> >> >> It's marked 1301 G7
> >> >> >
> >> >> >By the way, notice that the output ripple below 20% load is a whopping
> >> >> >300mVpp. Normally one would like to have that well below 100mVpp
> >> >> It needs added external caps, no big deal.
> >> >>
> >> >> I do plan to test them and learn more about actual behavior. It
> >> >> appears to be not a synchronous switcher.
> >> >
> >> >https://www.mornsun-power.com/public/uploads/pdf/SCM1301A.pdf maybe?
> >> That must be it. 700 KHz is right.
> >>
> >> If I do my own regs, I'd use the TI TPS54302 family parts,
> >> spread-spectrum synchronous switchers.
> >
> >nice, JLC has plenty in stock, you could probably have a board for $0.5
> >
> >https://jlcpcb.com/partdetail/TexasInstruments-TPS54302DDCR/C311983
> >https://jlcpcb.com/partdetail/Cenker-CKST0603_10uHM/C3002639
> >https://jlcpcb.com/partdetail/14236-CL31A106KBHNNNE/C13585
> How can they sell them for 18 cents, when we are paying 61?

you are buying them the wrong place?

Re: nice little switcher

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From: klausk...@hotmail.com (Klaus Vestergaard Kragelund)
Newsgroups: sci.electronics.design
Subject: Re: nice little switcher
Date: Thu, 16 Feb 2023 01:20:14 +0100
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by: Klaus Vestergaard Kr - Thu, 16 Feb 2023 00:20 UTC

On 15-02-2023 23:00, Lasse Langwadt Christensen wrote:
> onsdag den 15. februar 2023 kl. 22.49.51 UTC+1 skrev John Larkin:
>> On Wed, 15 Feb 2023 13:25:20 -0800 (PST), Lasse Langwadt Christensen
>> <lang...@fonz.dk> wrote:
>>
>>> onsdag den 15. februar 2023 kl. 21.58.26 UTC+1 skrev John Larkin:
>>>> On Wed, 15 Feb 2023 12:26:04 -0800 (PST), Lasse Langwadt Christensen
>>>> <lang...@fonz.dk> wrote:
>>>>
>>>>> onsdag den 15. februar 2023 kl. 21.16.01 UTC+1 skrev John Larkin:
>>>>>> On Wed, 15 Feb 2023 18:30:57 +0100, Klaus Vestergaard Kragelund
>>>>>> <klau...@hotmail.com> wrote:
>>>>>>
>>>>>>> On 15-02-2023 17:45, John Larkin wrote:
>>>>>>>> https://www.dropbox.com/s/0h88ikjnbxcisl3/CUI_PXO_DC-DC.jpg?raw=1
>>>>>>>>
>>>>>>>> https://www.mouser.com/ProductDetail/CUI-Inc/PXO7805-500-S?qs=Y0Uzf4wQF3l34%252B7eogTBxw%3D%3D
>>>>>>>>
>>>>>>>> This is the 5 volt out version but there are others. It can also
>>>>>>>> convert plus to minus.
>>>>>>>>
>>>>>>>> I can't buy the parts for three times that price.
>>>>>>>>
>>>>>>> Nice switcher, yes.
>>>>>>>
>>>>>>> Can you see the part number of the switcher IC? (would be interesting)'
>>>>>> It's marked 1301 G7
>>>>>>>
>>>>>>> By the way, notice that the output ripple below 20% load is a whopping
>>>>>>> 300mVpp. Normally one would like to have that well below 100mVpp
>>>>>> It needs added external caps, no big deal.
>>>>>>
>>>>>> I do plan to test them and learn more about actual behavior. It
>>>>>> appears to be not a synchronous switcher.
>>>>>
>>>>> https://www.mornsun-power.com/public/uploads/pdf/SCM1301A.pdf maybe?
>>>> That must be it. 700 KHz is right.
>>>>
>>>> If I do my own regs, I'd use the TI TPS54302 family parts,
>>>> spread-spectrum synchronous switchers.
>>>
>>> nice, JLC has plenty in stock, you could probably have a board for $0.5
>>>
>>> https://jlcpcb.com/partdetail/TexasInstruments-TPS54302DDCR/C311983
>>> https://jlcpcb.com/partdetail/Cenker-CKST0603_10uHM/C3002639
>>> https://jlcpcb.com/partdetail/14236-CL31A106KBHNNNE/C13585
>> How can they sell them for 18 cents, when we are paying 61?
>
> you are buying them the wrong place?

It's not just that. I was working on a project where we had a 6 million
quantity, so we had direct and almost open calculations on pricing. We
managed to quote the same part from Europe and Asia, which provided
different cost. The answer we got was that the support structure is
costly in EU/Western countries. In Asia much less cost which moved the
price down significantly. Also, Asia is a tougher marked, so markup is
lower there.

Re: nice little switcher

<tsjstm$31bkt$2@dont-email.me>

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Subject: Re: nice little switcher
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by: Klaus Vestergaard Kr - Thu, 16 Feb 2023 00:21 UTC

On 15-02-2023 21:15, John Larkin wrote:
> On Wed, 15 Feb 2023 18:30:57 +0100, Klaus Vestergaard Kragelund
> <klauskvik@hotmail.com> wrote:
>
>> On 15-02-2023 17:45, John Larkin wrote:
>>> https://www.dropbox.com/s/0h88ikjnbxcisl3/CUI_PXO_DC-DC.jpg?raw=1
>>>
>>> https://www.mouser.com/ProductDetail/CUI-Inc/PXO7805-500-S?qs=Y0Uzf4wQF3l34%252B7eogTBxw%3D%3D
>>>
>>> This is the 5 volt out version but there are others. It can also
>>> convert plus to minus.
>>>
>>> I can't buy the parts for three times that price.
>>>
>> Nice switcher, yes.
>>
>> Can you see the part number of the switcher IC? (would be interesting)'
>
> It's marked 1301 G7
>

Nice, thanks :-)

>>
>> By the way, notice that the output ripple below 20% load is a whopping
>> 300mVpp. Normally one would like to have that well below 100mVpp
>
> It needs added external caps, no big deal.
>
> I do plan to test them and learn more about actual behavior. It
> appears to be not a synchronous switcher.
>
>
>
Yes, a big diode on the PCB, so probably a schotkky

Re: nice little switcher

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From: jlar...@highlandSNIPMEtechnology.com (John Larkin)
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Subject: Re: nice little switcher
Date: Wed, 15 Feb 2023 16:43:47 -0800
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by: John Larkin - Thu, 16 Feb 2023 00:43 UTC

On Wed, 15 Feb 2023 14:00:20 -0800 (PST), Lasse Langwadt Christensen
<langwadt@fonz.dk> wrote:

>onsdag den 15. februar 2023 kl. 22.49.51 UTC+1 skrev John Larkin:
>> On Wed, 15 Feb 2023 13:25:20 -0800 (PST), Lasse Langwadt Christensen
>> <lang...@fonz.dk> wrote:
>>
>> >onsdag den 15. februar 2023 kl. 21.58.26 UTC+1 skrev John Larkin:
>> >> On Wed, 15 Feb 2023 12:26:04 -0800 (PST), Lasse Langwadt Christensen
>> >> <lang...@fonz.dk> wrote:
>> >>
>> >> >onsdag den 15. februar 2023 kl. 21.16.01 UTC+1 skrev John Larkin:
>> >> >> On Wed, 15 Feb 2023 18:30:57 +0100, Klaus Vestergaard Kragelund
>> >> >> <klau...@hotmail.com> wrote:
>> >> >>
>> >> >> >On 15-02-2023 17:45, John Larkin wrote:
>> >> >> >> https://www.dropbox.com/s/0h88ikjnbxcisl3/CUI_PXO_DC-DC.jpg?raw=1
>> >> >> >>
>> >> >> >> https://www.mouser.com/ProductDetail/CUI-Inc/PXO7805-500-S?qs=Y0Uzf4wQF3l34%252B7eogTBxw%3D%3D
>> >> >> >>
>> >> >> >> This is the 5 volt out version but there are others. It can also
>> >> >> >> convert plus to minus.
>> >> >> >>
>> >> >> >> I can't buy the parts for three times that price.
>> >> >> >>
>> >> >> >Nice switcher, yes.
>> >> >> >
>> >> >> >Can you see the part number of the switcher IC? (would be interesting)'
>> >> >> It's marked 1301 G7
>> >> >> >
>> >> >> >By the way, notice that the output ripple below 20% load is a whopping
>> >> >> >300mVpp. Normally one would like to have that well below 100mVpp
>> >> >> It needs added external caps, no big deal.
>> >> >>
>> >> >> I do plan to test them and learn more about actual behavior. It
>> >> >> appears to be not a synchronous switcher.
>> >> >
>> >> >https://www.mornsun-power.com/public/uploads/pdf/SCM1301A.pdf maybe?
>> >> That must be it. 700 KHz is right.
>> >>
>> >> If I do my own regs, I'd use the TI TPS54302 family parts,
>> >> spread-spectrum synchronous switchers.
>> >
>> >nice, JLC has plenty in stock, you could probably have a board for $0.5
>> >
>> >https://jlcpcb.com/partdetail/TexasInstruments-TPS54302DDCR/C311983
>> >https://jlcpcb.com/partdetail/Cenker-CKST0603_10uHM/C3002639
>> >https://jlcpcb.com/partdetail/14236-CL31A106KBHNNNE/C13585
>> How can they sell them for 18 cents, when we are paying 61?
>
>you are buying them the wrong place?

Direct from TI.

Re: nice little switcher

<tskm3c$vd5a$1@solani.org>

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From: ali...@comet.invalid (Jan Panteltje)
Newsgroups: sci.electronics.design
Subject: Re: nice little switcher
Date: Thu, 16 Feb 2023 07:24:37 GMT
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by: Jan Panteltje - Thu, 16 Feb 2023 07:24 UTC

On a sunny day (Wed, 15 Feb 2023 08:45:29 -0800) it happened John Larkin
<jlarkin@highlandSNIPMEtechnology.com> wrote in
<7p2quhtbpt470mo9alapqos7a7dhocq0al@4ax.com>:

>https://www.dropbox.com/s/0h88ikjnbxcisl3/CUI_PXO_DC-DC.jpg?raw=1
>
>https://www.mouser.com/ProductDetail/CUI-Inc/PXO7805-500-S?qs=Y0Uzf4wQF3l34%252B7eogTBxw%3D%3D
>
>This is the 5 volt out version but there are others. It can also
>convert plus to minus.
>
>I can't buy the parts for three times that price.

Yes, ebay stuff from China, I have some of these:
https://www.ebay.com/itm/112855472220

Re: nice little switcher

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Subject: Re: nice little switcher
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by: Jan Panteltje - Thu, 16 Feb 2023 07:35 UTC

On a sunny day (Thu, 16 Feb 2023 01:21:10 +0100) it happened Klaus Vestergaard
Kragelund <klauskvik@hotmail.com> wrote in <tsjstm$31bkt$2@dont-email.me>:

>On 15-02-2023 21:15, John Larkin wrote:
>> On Wed, 15 Feb 2023 18:30:57 +0100, Klaus Vestergaard Kragelund
>> <klauskvik@hotmail.com> wrote:
>>
>>> On 15-02-2023 17:45, John Larkin wrote:
>>>> https://www.dropbox.com/s/0h88ikjnbxcisl3/CUI_PXO_DC-DC.jpg?raw=1
>>>>
>>>> https://www.mouser.com/ProductDetail/CUI-Inc/PXO7805-500-S?qs=Y0Uzf4wQF3l34%252B7eogTBxw%3D%3D
>>>>
>>>> This is the 5 volt out version but there are others. It can also
>>>> convert plus to minus.
>>>>
>>>> I can't buy the parts for three times that price.
>>>>
>>> Nice switcher, yes.
>>>
>>> Can you see the part number of the switcher IC? (would be interesting)'
>>
>> It's marked 1301 G7
>>
>
>Nice, thanks :-)

The chip on my 10 V upconverter says B6280y
that leads to this:
http://www.jogjarobotika.com/voltage-regulator/4804-mt3608-3608-b6280-b628-sot23-6-12mhz-2a-step-up-converter.html

Must be a similar or the same chip.

Decaffeinated coffee? Just Say No.

tech / sci.electronics.design / Re: nice little switcher

Subject	Author
nice little switcher	John Larkin
Re: nice little switcher	Klaus Vestergaard Kragelund
Re: nice little switcher	John Larkin
Re: nice little switcher	Lasse Langwadt Christensen
Re: nice little switcher	John Larkin
Re: nice little switcher	Lasse Langwadt Christensen
Re: nice little switcher	John Larkin
Re: nice little switcher	Lasse Langwadt Christensen
Re: nice little switcher	Klaus Vestergaard Kragelund
Re: nice little switcher	John Larkin
Re: nice little switcher	Klaus Vestergaard Kragelund
Re: nice little switcher	Jan Panteltje
Re: nice little switcher	Jan Panteltje