NCP1395 Ver la hoja de datos (PDF) - ON Semiconductor

Número de pieza

componentes Descripción

Fabricante

NCP1395

High Performance Resonant Mode Controller

ON Semiconductor 

NCP1395A/B

PIN FUNCTION DESCRIPTION

Pin No.

Symbol

Function

1

Fmin

Timing Resistor

2

Fmax

Frequency Clamp

3

DT

Deadtime

4

Css

Soft−Start

5

FB

Feedback

6

Ctimer

Timer Duration

7

BO

Brown−Out

8

Agnd

Analog Ground

9

Pgnd

Power Ground

10

A

Low Side Output

11

B

High Side Output

12

Vcc

Supplies the Controller

13

Fast Fault

Quick Fault Detection

14

Slow Fault

Slow Fault Detection

15

OUT

OPAMP Output

16

NINV

OPAMP Noninverting

Description

Connecting a resistor to this pin, sets the minimum oscillator frequency

reached for VFB is below 1.3 V.

A resistor sets the maximum frequency excursion.

A simple resistor adjusts the deadtime length.

Select the soft−start duration.

Applying a voltage above 1.3 V on this pin increases the oscillation frequency

up to Fmax.

Sets the timer duration in presence of a fault.

Detects low input voltage conditions. When brought above Vlatch, it fully

latches off the controller.

−

−

Drives the low side power MOSFET.

Drives the upper side power MOSFET.

−

Fast shutdown pin, stops all pulses when brought high. Please look in the

description for more details about the fast−fault sequence.

When asserted, the timer starts to countdown and shuts down the controller at

the end of its time duration.

Internal transconductance amplifier.

Non−inverting pin of the OPAMP.

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