NCP1395 Просмотр технического описания (PDF) - ON Semiconductor

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Компоненты Описание

производитель

NCP1395

High Performance Resonant Mode Controller

ON Semiconductor 

NCP1395A/B

Vdd

Fmin

Imin

Vfb = < Vfb_off

Vref

+

−

C

IDT

+

DT Adj.

I = Imax for Vfb = 5 V

I = 0 for Vfb < Vfb_off

Vdd

Imax

Vfb = 5

SS

Vdd

Fmax

Vref

Itimer

If FAULT Itimer else 0

S

D

Q

Clk Q

R

50% DC

Temperature

Shutdown

Vref

FF

BO

Reset

PON

Reset

Fault

Timeout

Fault

SS Reset on

A Version Only

Timer

+

−

+

Vref

Vdd

ISS

SS

Timeout

Fault

PON

Reset

Fault

20 V

UVLO

Fault

FB

RFB

−

+

+

Vfb_fault

IDT

DT

BO

AGND

Vdd

IBO

+

−

+

VBO

+

G=1

> 0 only if

−

V(FB) > Vfb_off Vdd

+

Vfb_off

Vref

Deadtime

Adjustment

+

−

+

Vlatch

20 ms Noise

Filter

PON Reset

Figure 2. Internal Circuit Architecture

http://onsemi.com

4

Vref_FB

+

NINV

− + gm

OUT

+

Slow

−

Fault

+

Vref Fault

+

−

Fast

Fault

+

Vref Fault

VCC

B

A

PGND

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