Hi Ben,
Another option here is to disconnect VCCX from VOUT and rely on the internal VCC. This lowers the gate drive amplitude and hence reduces the turn-on speed. The penalty in terms of no-load input current is not that big as these FETs are low…
Hi Roy,
Just use the per-phase equivalent circuit with the total output cap divided by the number of phases. The LM5143-Q1 quickstart calculator is configurable for 2/3/4-phase operation and can help you with compensation component calculations - it…
Yes, tie DEMB to GND (or CSG). Note that PMP7282 has 3 high-side FETs and 3 low-side 80V FETs per phase, so switching losses are high. Depending on the Vin-max spec, you should also consider the LM5143-Q1 two-phase controller with 60V or 80V FETs as needed…
Part Number: PMP7282 Other Parts Discussed in Thread: LM5116 , LM5143-Q1 Hi Sir,
Is it possible use the LM5116 IC in Master slave configuration as shown in PMP7282 neglecting the current sensing.
1. Using LM5116 in voltage mode by shorting the CG…
Hi Mark,
An op-amp is required to implement a 2-phase LM5140-Q1 solution. Alternatively, please consider the LM5143-Q1 two-phase controller that does not need an external op-amp for current sharing.
Regards,
Tim
Hi Ann,
35mA seems reasonable for input current.
Note that we also have the LM5143-Q1 if you need a true (current-sharing) two-phase solution.
Regards,
Tim
hi，Ravi
This is the device tree source file. Pls help to review it.
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2022
*
*/
/dts-v1/;
#include <dt-bindings/gpio/gpio.h>
#include "k3-j784s4.dtsi"
/ {
compatible = "xxx,j784s4…
Hi Wei-Hao,
There is a blog written by David Baba that describes paralleling two LM5145 controllers. However, I recommend looking at the LM5143-Q1 as that is a true multi-phase controller.
Regards,
Tim
