Power management

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TCPP01-M12 FLT fault indicator

I'd like to add an LED indicator to the FLT pin so it sinks current when it becomes active low. The LED anaode would be tide high with a resistor in series. The spec sheet says this pin has a resistance of 250Ohms when active. How much current can t...

RMas by Associate II
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Adding Power Delivery

Hello.1- We want to add USB Power Delivery to an existing converter which can deliver 2x 5.1 V/3A from an unique power stage (isolated converter with one transformer, one regulator IC, etc.).The PD-controller has to meet the following requirements:-N...

FC1 by Associate
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  • 4 replies
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Disable Vbus in both source/sink role during operation

Hi everyone,I am looking the way to disable charge and enable charge for external device wihin STUSB1602. I guest the register TYPE_C_CTRL 0x11 may help but don't know how to the way to do.Does someone try that? Please help. Thanks in advance.

Qmai.1 by Associate
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Resolved! LDO U3 at STEVAL-USBPD27S

Hi together,the VCONN voltage at STEVAL-USBPD27S is generated with a LDO. https://www.st.com/content/st_com/en/products/evaluation-tools/solution-evaluation-tools/psu-and-converter-solution-eval-boards/steval-usbpd27s.html#overviewUSB power delivery ...

DRH by Associate III
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  • 1 replies
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How to enable two seperate Rails with the STUSB4500L

We have an application we would like to power via USB PD. The device needs 12V or more to fully operate. To do a firmware upgrade 5V is sufficient. But the 5V are on a different Rail, normally supplied from the 12V Rail via DCDC converter. So we need...

I would like to couple the STEVAL-ISC004V1 (USB PD source) with the STEVAL-ISC005V1 (USB PD sink) like in this demonstration video https://youtu.be/Sld2pj-_ho0?t=100 My question is how you can choose which Vbus voltage level will be negotiated.

In the video, it appears that the boards cycle automatically through the different PDO's (first the LED at the 9V PDO lights up, then the LED at the 15V PDO and so on. Is this default?Let's say that I connect an electric razor to the 15V PDO at the s...

JBaer.1 by Associate
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STUSB4500 Discharge path

Hello everyone,I have a question about the application schematic in page 24 of the datasheet STUSB4500.I don't understand the utility of D4/C4/R1 and R4, why not use only one resistance between VBUS en VBUS_VS_Disch to discharge the bus ?Best Regard'...

Kevin1 by Associate
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