See datasheet for actual packaging/pinout drawings

Packaging

Package | PIN:

PW | 16

Temp:

Q (-40 to 125)

ECO Plan:

Green (RoHS & no Sb/Br)

LM5115AMT/NOPB


75V, Secondary Side Post Regulator/ Synchronous Buck Controller with Power-Up/Power-Down Tracking

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Texas Instruments LM5115AMT/NOPB

The LM5115A controller contains all of the features necessary to produce multiple tracking outputs using the Secondary Side Post Regulation (SSPR) technique. The SSPR technique develops a highly efficient and well regulated auxiliary output from the secondary side switching waveform of an isolated power converter. LM5115A can be also used as a standalone DC/DC synchronous buck controller (Refer to section). Regulation of the auxiliary output voltage is achieved by leading edge pulse width modulation (PWM) of the main channel duty cycle. Leading edge modulation is compatible with either current mode or voltage mode control of the main output. The LM5115A drives external high-side and low-side NMOS power switches configured as a synchronous buck regulator. A current sense amplifier provides overload protection and operates over a wide common mode input range. Additional features include a low dropout (LDO) bias regulator, error amplifier, precision reference, adaptive dead time control of the gate signals and thermal shutdown.

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