Part Number: LM2678 Other Parts Discussed in Thread: LMR14050 , LM61460 , TPS40057 Hi,
I want to make a tiny motor board controller the Input is 24V and my motor are DC at 8V(or 12V) max.
The PWM controller is 40Khz capable.
I'm would like to know…
Part Number: LM2678 Other Parts Discussed in Thread: LM73605 , LM22678 Hello All Greetings!!!!!! We have designed switcher using LM2678-5.0 for 5A. Input Maximum voltage: - 30V DC using battery pack Please see attached schematic design photo.
We…
Part Number: LM2678 Hello,
Random question here, is PIN 4 ground connected to the back heatsink pad? http://www.ti.com/lit/ds/symlink/lm2678.pdf
Thank you,
Hi Alex,
The VOUT noise is not a good sign, those oscillations are not expected and are probably corrupting the FB signal, causing the issue.
What's even weirder is that the VOUT oscillations show up at a different frequency than the switching frequencies…
George,
The layout can be improved (see below) but not in a way that would regulate perfectly at 5V, then have an issue to regulate perfectly at 8V.
Can you take a scope capture of the switch node as well as the FB pin (at the pin on the IC). Can…
Part Number: LM2678 Other Parts Discussed in Thread: LP38692-ADJ , , LP38692 Hi,
For one of our application requires regulated 5V/4A output and 3.3V/800mA output generated from a single 12V power supply. I have used LM2678 SIMPLE SWITCHER to generate…
Part Number: LM2678 Dear Sir,
My customer is now using LM2678S-ADJ/NOPB.
I have some problem.
When Input voltage is 12V. it is OK.
but when Input voltage is 28V, LM2678S-ADJ is burned.
Could you tell me Why LM2678S-ADJ is burned.
Could…
Part Number: LM2678 Hi, I am designing a power stage using LM2678 where: Vin: 19V Vout_min: 2V Vout_max: 16V Iout: 5A. Problem: With a 4ohm load I found that it can not go higher than 7V approx (1.75A output). With a 8 ohm load this limit appears at 10V…
