TPS61196: Can the TPS61196 be driven with an external clock?

Stuart Borden

Part Number: TPS61196

This is a second question I have on the TPS61196, unrelated to the first. We need 2 controllers operating at different voltages and would like to drive them out of phase with each other to minimize EMI. Is this possible?

Best regards,

Stuart Borden

over 4 years ago

0 Yuting Shao over 4 years ago

TI__Genius 13001 points

Hi Stuart,

Each channel of TPS61196 can be controlled by corresponding PWM input signal. So you can apply direct PWM dimming method and set different phase for input PWM signal.

BR,

Robin

0 Stuart Borden over 4 years ago in reply to Yuting Shao

Prodigy 180 points

We are looking at the Vled generation, not the output current control. With two drivers operational, we would like to keep the Vled pulses 180-degrees out of phase to minimize EMI and current transients on the main power bus. I guess we can double up on the capacitors on the main bus, but it would be nice to save the space (and inrush!).

Best regards,

Stuart.

0 Yuting Shao over 4 years ago in reply to Stuart Borden

TI__Genius 13001 points

Hi Stuart,

This device doesn't have SYNC pin, so we can't control the internal switching phase between two devices.

BR,

Robin

0 Stuart Borden over 4 years ago in reply to Yuting Shao

Prodigy 180 points

Thanks.

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TPS61196: Can the TPS61196 be driven with an external clock?