Part Number: LM2698 Other Parts Discussed in Thread: TLV61047 Tool/software: Hi,
I am designing Boost regulator using LM2698 with following specs
Vin = 5.2V Vout = 11.6V Iout = 0.4A L = 10uH
Fsw = 1.2MHz
Power stage calculation
Dominant Pole…
Part Number: LM2698 Tool/software: Hi,
Is the device LM2698 support the negative output?
Webench designer says it is not supported
( LM2698 data sheet, product information and support | TI.com )
But in the datasheet "Figure 24. Level-Shifted…
Part Number: LM2698 I am looking to design an inverting boost DC-DC going from Vin = +5.0V to Vout = - 15V.
Because of part procurement difficulties, I am trying to use the LM2698 since it seems to be able to do it.
WEBENCH does not support the inverted…
Part Number: LM2698 Hi ,
We are using LM2698 in our design. We are boosting 7 to 8 V to 12 V. Our circuit was working fine. Load on 12V o/p is max 100mA. Below is snap of our circuit.
While testing suddenly chip started becoming hot. We then isolated…
Part Number: LM2698 Hi ,
We are using LM2698 as boost converter.
Input is 8.4V.
Output = 12V
We got 12V proper o/p. However we would like to use SHUTDOWN feature of same IC. Here we have controlled SHDN pin by means of Transistor . When we turned…
Hi Sahol,
WEBENCH efficiency algorithm generally covers several all corner conditions and are verified with the bench results for different Vins, Vouts, Iouts, Ta, diff frequencies both at full and light load , and the max eff mismatch is targeted around…
Part Number: LM2698 Is there a revision history available for LM2698?
We have been using LM2698MM-ADJ/NOPB with date codes 75E9 and 7337. Unfortunately the LM2698 is not available in desired quantities at the moment.
We got offered LM2669 with an…
Hi Tanzim,
Yes, the fundamental frequency of the output ripple will be the same as the switching frequency of the converter. There will be additional higher frequencies (harmonics) as well, but they will be of lower amplitude than the fundamental…
