Part Number: LM5158 Tool/software: Hi, Staff
I'm designing boost convertor.
Vsupply range is from 25.5V to 46.0V
Vload range is from 47.05V to 49.96V.(Typ. 48.5V)
Target Fsw is about 500KHz.
In Vsupply is 46.0V and Vload 47.05V, PWM Duty is 3.25…
Part Number: LM5158 Tool/software: Hello,
Please can you confirm minimum feedback current requirement for LM5158. My intention is to know the maximum permissible resistor values for the feedback network.
Part Number: LM5158-Q1 Tool/software: This is in continuation to the same below Previous E2E support https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1384756/lm5158-q1-boost-converter?ReplyFilter=Answers&ReplySortBy…
Part Number: LM5158-Q1 Tool/software: I have a PoE product where I am connecting all my devices in a daisy chain using PoE power. I am using the LM5158QRTERQ1 to boost and supply 52V to the PSE. The boost voltage is from 40V-48V input to 52V output with…
Hi Reddy,
I would recommend to keep some ceramic caps and dont change all to aluminum. They are needed for the higher frequencies.
You can use special types like shown in the appnote:
Regarding the input capacitors, please try to increase the total input…
Part Number: LM5158 Tool/software: WEBENCH selects a transformer VP2-0066R from Eaton, but calculates the wrong series resistances.
I entered the following data to WEBENCH:
VinMin = 16.0V
VinMax = 32.0V
Vout = 4.0V
Iout = 1.5A
Device = LM5158RTER
Topology…
Part Number: LM5158 Tool/software: Hello,
I understand that the Hiccup Mode uses timer for fault. Please can you confirm that the Hiccup Mode timer is based on Switching Freq selected in the application.
Part Number: LM5158 Tool/software: I’m working on a boost circuit for PoE type II PSE (30W). The following parameters are required:
Vin: 12V-24V
Vout: 52V, 0.6A
The Webench designed it using a 97µH(21.56mΩ) inductor, which is pretty large.…
Part Number: LM5158Lm5158 datasheet states that it has over-voltage protection when FB pin voltage exceeds Vref by 10%. Please share what is LM5158's behavior if top-side feedback resistor gets open.
