[SOLVED] Issue with TLE9844QX's High Side switch.

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User16111
Level 1
Level 1
Hi all,

I’m using the TLE9844QX chip. I am facing an issue with the High Side switch, it switches off if the supply is less than 5V.

Is that a normal behavior ?
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1 Reply
pestadieu
Employee
Employee
Hi,

I really like your username.

The High side pin for TLE984x series MCU works fine up to 5.5V. Below 5.5V, it will switch off due to undervoltage on VS pin.

In order to work in the extend range of up to 3V on VS pin, the bit HSx_CYC_ON_ACTIVE need to be set to 1. This bit is in the HS_CTRL register.
More information can be found in the User Manual (Rev 1.0) on page 925.

Kind Regards
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