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Other Parts Discussed in Thread: TPS40192 By a circuit using TPS40192, undershoot occurs to an output voltage wave pattern the output side in Vdd side power supply Off in no load, and negative electric potential may occur at one time. It drives Low side…
Other Parts Discussed in Thread: TPS40192 I am using a TPS40192 in an application to regulate +5.0V input down to +0.9V output. At input voltages less than approximately +4.88V, the TPS40192 cuts out, disabling the output. I was expecting the regulation…
Danilo,
As you note, the soft-start sequence for the TPS40192 is not going to support PWM dimming via the Enable pin well, however there are a couple of other possibilities:
1) Provide a pull-up on the FB pin such that the programmed LED current…
Other Parts Discussed in Thread: TPS40192 Hi,
There is an question from customer side. The output voltage is not requlated normally when EN pin is tied to the external voltage 18V. In the D/S, the absolute max. voltage can be up to 20V. So it means that…
Other Parts Discussed in Thread: SWITCHERPRO , TPS40192TPS40192/93 symbol in SwitcherPro schematic incorrectly shows pin 5 as GND when it should be PowerGood. Also, pin 11 which is the PowerPad ground is not shown.
Thanks,
Allen
Hi, Marco
1. I think your idea is not practical.
2. Suggest to use a higher current devices:
Integrated power FET: TPS544B20 or TPS544B25.
External power FET: TPS40192 or LM3000.
Part Number: TPS546C20A Other Parts Discussed in Thread: TPS546C23 , I am facing two issues with TPS546C20A on a single phase design.
Input: 12V
Output: 0.845V 30A
Issue 1: On the measured loop gain, at the low frequency region (1kHz to 4kHz, see Case…
Hi Jospeh,
Thanks for your inputs.
I have updated the power calculator and selected suitable Feedback and compensation network. Please review the schematics and power calculator bode plots and provide if any review comments. I would like to release the…
Other Parts Discussed in Thread: CSD16410Q5A , TPS40192 , SWITCHERPRO I just created a buck-regulator design using the TPS40192, using one each of CSD16410Q5A, which has Ron=10mOhm@4.5V, for high and low-sides.
I_rms(Q1) was calculated to be 4.05A. The Q1…
