MP4026 – PRIMARY SIDE CONTROL, OFFLINE LED CONTROLLER WITH ACTIVE PFC

MP4026 Rev. 1.1

www.MonolithicPower.com

13

9/9/2015

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Vbus

Vcomp

Vgate

VCC

Brown out

happen

Brown out

detected

Brown

out

recover

Figure 10: Brown-Out Protection Waveforms

IC Thermal Shut Down

To prevent from any lethal thermal damage,

when the inner temperature exceeds the OTP

threshold, the MP4026 shuts down switching

cycle and latched until VCC drop below UVLO

and restart again.

Design Example

For the design example, please refer to MPS

application note AN076 for the detailed design

procedure.