Active clamp flyback using in CCM

Expert 1065 points

Other Parts Discussed in Thread: UCC2897A, TINA-TI

Hi TI expert,

I am looking for Active clamp flyback using in CCM, any recommended IC?

Could you please also provide the SIMPLIS simulation file let me try, thanks/

over 3 years ago

0 Ulrich Goerke over 3 years ago

TI__Mastermind 40120 points

Hello Jack,

The UCC2897A Active Clamp controller works in the forward mode with the output inductor current operating in CCM.
Data sheet link: https://www.ti.com/lit/gpn/ucc2897a

Section 12.1.1 of the UCC2897A data sheet (page 36) contains several other links to earlier forward-mode ACF controllers.

The Design tools and Simulation section of the UCC2897A product page ( UCC2897A data sheet, product information and support | TI.com ) has links to PSpice and TINA-TI models, but unfortunately, we do not have a Simplis model available for this device.

Regards,
Ulrich

0 J over 3 years ago in reply to Ulrich Goerke

Expert 1065 points

Hi Goreke,

Can this IC be used in the flyback?

Jack

0 Ulrich Goerke over 3 years ago in reply to J

TI__Mastermind 40120 points

Hello Jack,

The UCC2897A data sheet indicates that this part can be used in flyback mode, but it is not clear if it can operate in CCM-flyback.

I will refer your question to someone more familiar with this device than I am.
Please allow a day or two for a response.

Regards,
Ulrich

0 Hong Huang over 3 years ago in reply to Ulrich Goerke

TI__Guru 73265 points

Hi,

Yes, this device can work for flyback both CCM and DCM depending your inductance design..

Power management

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Active clamp flyback using in CCM