L6598D データシートの表示（PDF） - STMicroelectronics

部品番号

コンポーネント説明

メーカー

L6598D

HIGH VOLTAGE RESONANT CONTROLLER

STMicroelectronics 

L6598

Figure 6. Oscillator/Output Timing Diagram

Cf

HVG

LVG

D98IN897

3 BLOCK’S DIAGRAM DESCRIPTION

3.1 High/Low Side driving section

An High and Low Side driving Section provide the proper driving to the external Power MOS or IGBT. An high

sink/source driving current (450/250 mA typ) ensure fast switching times also when size4 Power MOS are used.

The internal logic ensures a minimum dead time to avoid cross-conduction of the power devices.

3.2 Timing and Oscillator Section

The device is provided of a soft start function. It consists in a period of time, TSS, in which the switching frequen-

cy shifts from fstart to fmin. This feature is explained in the following description (ref. fig.7 and fig.8).

Figure 7. Soft Start and frequency shifting block

Iss

Ifstart

Ifmin

Iosc

gm

OSC

Css

6/17

Share Link: