TLF35584

Announcements

From sunburn to sun earn – we’ve got the power! Watch our #poweringgreen videos now.

Tip / Sign in to post questions, reply, level up, and achieve exciting badges. Know more

cross mob
xiaoxuan
Level 3
Level 3
50 sign-ins 25 replies posted 25 sign-ins

hi,

I'm having a problem debugging TLF35584

My configuration of the DEVCTRL register is shown below

xiaoxuan_2-1678412677638.png

The configuration of the DEVCTRLN register is shown in the following figure

xiaoxuan_1-1678412641173.png

The result now is:

QT2 has no current output

QT1 has no current output

QOC has current output

QVR has no current output

Currently in NORMAL

I don't understand why I only turned off the current output in QVR, but there is no current output in QT2 and QT1

 

 

0 Likes
1 Solution
Xiangrui
Moderator
Moderator
Moderator
500 replies posted 250 solutions authored 50 likes received

Hi Xiaoxuan,

QVR is the voltage reference and QT1/2 are voltage trackers.

The trackers  get their reference value from the reference voltage source (QVR). The output voltage of trackers 1 and 2  is following the reference voltage source Volt_Ref with a small drop.

If you disable QVR (switch off), then QT1/2 will be 0 V as well, which leads no current output.

BR,

Xiangrui

View solution in original post

0 Likes
8 Replies
Xiangrui
Moderator
Moderator
Moderator
500 replies posted 250 solutions authored 50 likes received

Hi Xiaoxuan,

QVR is the voltage reference and QT1/2 are voltage trackers.

The trackers  get their reference value from the reference voltage source (QVR). The output voltage of trackers 1 and 2  is following the reference voltage source Volt_Ref with a small drop.

If you disable QVR (switch off), then QT1/2 will be 0 V as well, which leads no current output.

BR,

Xiangrui

0 Likes

hi,

Thank you very much for your reply.

I have another question for you,

NORMAL-state ->SLEEP-state 

NORMAL-state ->STANDBY--state 

Do both of the above state transitions require the MUC to enter low power mode?

If so, how to enter low power mode? (I use TC375 chip)

 

0 Likes
Xiangrui
Moderator
Moderator
Moderator
500 replies posted 250 solutions authored 50 likes received

Hi,

go to SLEEP or STANDBY mode need to make sure ENA and WAK=0 firstly.

Then via SPI command "go to SLEEP" or " go to STANDBY" can the device go to corresponding mode.

BR,

Xiangrui

0 Likes

hello,

How do the following conditions need to be met

xiaoxuan_0-1678762998204.png

There is also a question: how to determine the microcontroller current consumption below the selected LDO_µC current threshold

 

0 Likes
Xiangrui
Moderator
Moderator
Moderator
500 replies posted 250 solutions authored 50 likes received

Hi,

You can configure it with a suitable value in DEVCFG2.CTHR, if your microcontroller current consumption is above LDO_µC current threshold in sleep mode.

BR,

Xiangrui

0 Likes

Hi,

The current of my microcontroller is 144mA, and the maximum current set by DEVCFG2.CTHR is 100mA. What do I need to do to make the MCU current below 100mA?

xiaoxuan_0-1678931209216.png

 

0 Likes
Xiangrui
Moderator
Moderator
Moderator
500 replies posted 250 solutions authored 50 likes received

Hi,

There are several methods to reduce MCU current consumption:

1. Go to low power mode

2. Switch off communication 

3. dynamic reduce frequency

4. design suitable GPIO Pin circuit.

 For further help, you can post a new topic on MCU board.

BR,

Xiangrui

0 Likes

hi,

OK,Thank you very much,

0 Likes