Author Topic: PSA: do not use the TPS61099 boost reg in your designs  (Read 11320 times)

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Offline T3sl4co1l

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Re: PSA: do not use the TPS61099 boost reg in your designs
« Reply #50 on: January 25, 2019, 02:57:46 am »
AoS isn't obscure. :)

Diodes Inc makes a bunch of regulators, and controllers maybe, I forget.  ST, On Semi, Rohm, Infineon, Intersil.

There's a ton of Taiwanese sources, even in the western market now.  The documentation is usually terrible, so you may want to evaluate a kit before designing them in.  I haven't seen any that are obviously embarrassingly worse than some of TI's stupider designs.

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Offline SiliconWizard

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Re: PSA: do not use the TPS61099 boost reg in your designs
« Reply #51 on: January 25, 2019, 02:58:22 am »
Who makes decent affordable DC-DC silicon other than TI?

Don’t say high-price LT.

Analog Devices. ;D

MPS makes decent stuff at significantly lower prices.
https://www.monolithicpower.com/en/products/dc-dc-power-conversion/switching-regulators.html
 

Offline KE5FX

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Re: PSA: do not use the TPS61099 boost reg in your designs
« Reply #52 on: January 25, 2019, 03:00:12 am »
Who makes decent affordable DC-DC silicon other than TI?

Don’t say high-price LT.

There's an obscure company called "Alpha and Omega Semiconductor" that seems to be doing some decent work.  E.g., AOZ1050 (although that particular one is NRND).  Their parts seem to have a decent compromise between simplicity, performance, EMI, and overall efficiency. 

They are present on some FPGA integration boards that I've used and I haven't seen any of them melt down yet.  That particular board also uses a part from Richtek that seems to work well.

One concern I have with LT lately is that they don't seem to be able to deliver certain new parts in volume.  The LT8650 is a nice part that I'm using in a design now, but either they can't build them for some reason, don't care to provide them via normal distribution channels, or somebody is buying all of them they can make.  This has been true for the better part of a year now.  I don't remember this happening with Linear before.

AoS isn't obscure. :)

(Shrug) I'd never heard of them before I encountered their parts on the ZTex boards.  Never seen them used anywhere else.

Goofy name, that's for sure.  Makes me think I'm buying from the Branch Davidians or something.
 

Offline amyk

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Re: PSA: do not use the TPS61099 boost reg in your designs
« Reply #53 on: January 25, 2019, 03:44:11 am »
(Shrug) I'd never heard of them before I encountered their parts on the ZTex boards.  Never seen them used anywhere else.

Goofy name, that's for sure.  Makes me think I'm buying from the Branch Davidians or something.
A&O MOSFETs are very common, especially on PC (in particular laptop) motherboards. In general, looking at schematics for mass-produced consumer products can be a very educational experience for seeing who "the big guns" turn to for their designs, and what parts they use (some of TI's switching regulators are common in PCs too.)
 

Offline OwO

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Re: PSA: do not use the TPS61099 boost reg in your designs
« Reply #54 on: January 25, 2019, 04:57:41 am »
Who makes decent affordable DC-DC silicon other than TI?

Don’t say high-price LT.

There are many Ching Chong brands that are ok. You can find them on LCSC or by just searching "buck converter ic" on aliexpress and googling the part numbers.
Email: OwOwOwOwO123@outlook.com
 

Offline JPortici

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Re: PSA: do not use the TPS61099 boost reg in your designs
« Reply #55 on: January 25, 2019, 06:43:46 am »
Who makes decent affordable DC-DC silicon other than TI?

Don’t say high-price LT.

I like to use microchip power parts. cheap and works as intended. I was always able to get near the advertised efficiency (around 1% less) without much effort
I however tend to use TI parts because there's always this or that feature that they seem to be the only one to have (pick a number of requirements, TI will usually have the converter with the ENABLE/SHUTDOWN polarity i need not to complicate the circuit too much)
 


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