TEA1610P Ver la hoja de datos (PDF) - Philips Electronics

Número de pieza

componentes Descripción

Fabricante

TEA1610P

Zero-voltage-switching resonant converter controller

Philips Electronics 

Philips Semiconductors

Zero-voltage-switching

resonant converter controller

Product specification

TEA1610P; TEA1610T

FUNCTIONAL DESCRIPTION

Start-up

When the applied voltage at VDD reaches VDD(initial) (see

Fig.5), the low side power switch is turned-on while the

high side power switch remains in the non-conducting

state. This start-up output state guarantees the initial

charging of the bootstrap capacitor (Cboot) used for the

floating supply of the high side driver.

During start-up, the voltage on the frequency capacitor (Cf)

is zero and defines the start-up state. The output voltage

of the error amplifier is kept constant (typ. 2.5 V) and

switching starts at about 80% of the maximum frequency

at the moment pin VDD reaches the start level.

The start-up state is maintained until VDD reaches the start

level (13.5 V), the oscillator is activated and the converter

starts operating.

handbook, full pagewidth

VDD

0

GH - SH

0

GL

0

VDD(start)

VDD(initial)

Fig.5 Start-up.

t

MGT998

2001 Apr 25

5

Share Link: