PMP7605 REVC uses the SM72295MA bridge to charge the battery from a solar panel. Bias power to all circuitry (10V and 3.3V) is derived from the LM5019 buck and TLV70433 linear regulator, respectively. Bias power receives its input voltage from P+ (panel…
Hi Ramesh,
Where did you measure the 3.3V? Do you mean there's no output of DCDC controller(LM5019 at test point 2)? If that's the case, probably there's something wrong happened on the DCDC circuit. Thanks.
Best regards,
Penny
Part Number: TPS23880 Other Parts Discussed in Thread: LM5019 , TPS54360
Hi,
Here are some question for previous comment
"AGND and DGND should be connected together to the ground plane and Vpwr and VDD should be referenced to the same ground.…
Hello Mr Harris,
you are right on the isolated grounds. However the body diode of the Mosfet Q1 allows the capacitors to charge to a voltage that is high enough to power the LM5019 to power the VCC. Then Q1 is used as a switch and a signal can be generated…
Hi,
For LMR33630, at light loads, the mode changes to PFM. If we are putting heavy loads on the secondary side, the primary side current will go negative. Therefore, LMR33630 can't be used as fly-buck in this case.
Theoretically, TPS54308 can be used…
Part Number: LM34925 Other Parts Discussed in Thread: LM34926 , , LM5018 , LM5019
Hi Team, Is Buck Switch RDS(ON) same between LM34925 and LM34926 under same test condition? The datasheet shows the value is the same however test condition is different…
Hi Yash,
Can you clarify whether you want 1 for LM5008 or LM5019? It is usually good to seperate the question when two different part numbers are involved.
Regards,
Hi Shreenidhi,
Please see my comments below:
SHTDWN pin is used to fast shut down ports. To enable this function, you will need to configure register 0x15 to make the SHTDWN pin have impact on ports. If the the AUTO bit is register 0x11 is set…
Hi Kamal,
The LM25019 and LM5019 product webpages have Webench and an excel based quick-start calculator tool.
http://www.ti.com/product/LM25019/toolssoftware
http://www.ti.com/product/LM5019/toolssoftware
There is no bode plot support available…
