Posted on Nov 14, 2012

This linear post regulator provides 12 V at 3 A. It employs TL431 reference Ul which, without additional amplification, drives TMOS MTP3055A gate Ql series pass regulator. Bias voltage is applied through Rl to Q1`s gate, which is protected against overvoltage by diode CRl. Frequency compensation for closed-loop stability is provided by Cl.

Click here to download the full size of the above Circuit.

Key performance features are: Dropout voltage: 0.6 V Load regulation: lOmV Line regulation: ± 5 m V Output ripple: 10 mVpk-pk

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