UCD3138A: LLC code

user4357894

Intellectual 260 points

Part Number: UCD3138A

Hi TI,

I found an issue when test UCD3138A demo using LLC code.

In Resonant LLC topology, three modes are used. At the lowest power, a pulse width modulated mode (Multi Mode) is used.

Init_DPWM() ,I configure EVENT1-EVENT4 in Multi_mode for LLC DPWM dead.

In 100us time interrupt while power running I change the dead time using EVENT1-EVENT4 of DPWM. but the dead time is only changed in PFM mode, can not change in PWM mode according the experiment? so what is reason for that?

Thanks !

over 6 years ago

0 Yitzhak Bolurian over 6 years ago

TI__Mastermind 18370 points

Please note that EVENT1-EVENT4 should not be set in the Init_DPWM() function, but in the configure_dpwm_timing() function.

configure_dpwm_timing() is called more than just in the initialization/power up time. Therefore it will overwrite the value of EVENT1-EVENT4.

Hope this helps.

Regards,

0 user4357894 over 6 years ago in reply to Yitzhak Bolurian

Intellectual 260 points

Thank you for you kind reply!

0 Yitzhak Bolurian over 6 years ago in reply to user4357894

TI__Mastermind 18370 points

You are welcome. If the above addresses your concern, please set the status of this post to resolved.

Regards,

Power management

Power management forum

UCD3138A: LLC code