APX9292 datasheet(10/18 Pages) ANPEC

10 / 18 page

Rev. A.3 - Apr., 2017

www.anpec.com.tw

APX9292

Functional Descriptions (Cont.)

Output Drivers

All four drivers in the bridge output are designed for single

coil fans. An internally generated dead time prevents cross-

over currents that can occur when switching the output

devices. Built-in re-circulation diodes make the output

current flows through the internal re-circulation diodes

between the output devices are switched off in dead time.

Frequency Generator Function

The FG pin is an open collector output, connecting a pull

up resistor to a high level voltage for the frequency gen-

erator function. When IN- is larger than IN+, the FG is low

(switch on); when IN- is smaller than IN+, the FG is high

(switch off). RD pin is also open corrector output. Low

level is at rotation mode and high level is at stop mode

(See Truth Table). Open the terminal when not in using.

Thermal Protection

The APX9292 has thermal protection. W hen internal

junction temperature reaches 175

°C, the output devices

will be switched off. When the IC

’s junction temperature

cools by 30

°C, the thermal sensor will turn the output

devices on again, resulting in a pulsed output during

continuous thermal protection.

APX9292 Fiches technique(PDF) 10 Page - Anpec Electronics Coropration