MP156 Ver la hoja de datos (PDF) - Monolithic Power Systems

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MP156

Small, Energy-Efficient, Off-line Regulator 30mW No-Load Power Consumption

Monolithic Power Systems 

FLOW CHART

MP156 –SMALL, ENERGY-EFFICIENT, OFF-LINE REGULATOR

Start

Shut Down

Internal High Voltage

Regulator

Internal High Voltage

Regulator ON

Y Vcc>5.6V N

Y

Soft Start

Vcc Decrease

to 2.4

Shut off the

Switching

Pulse

Y

Y

Vcc<5.3V N N Vcc<3.4V Y

Y

OTP, SCP N

or open loop

Logic High?

Monitor Vcc

OTP, SCP

and open loop

Monitor

Monitor VFB

N VFB<2.5V

Y

Turn ON the

MOSFET

N

VFB<1.7V

Y

OLP=Logic High

6144

Y switching Y

counter

finished? N

Continuous

Fault Monitor

UVLO, OTP, SCP, OLP and Open Loop

Protection are auto restar

Figure 12: Control Flow Chart

MP156 Rev. 1.15

www.MonolithicPower.com

17

4/21/2016

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