IPS2050H datasheet(17/32 Pages) STMICROELECTRONICS

Part #	IPS2050H

Description	High efficiency, high-side switch with extended diagnostics and smart driving for capacitive loads

PDF	32 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

Logo

17 / 32 page

Active clamp

Active clamp is also known as Fast Demagnetization of inductive loads or Fast Current Decay. When a high-side

driver turns off an inductance, an under-voltage on output is detected.

The OUT pin is pulled-down to VCC-VDEMAG. The conduction state is modulated by an internal circuitry in order to

keep the OUT pin voltage at ~VDEMAG until the load energy has been dissipated. The energy is dissipated in both

IC internal switch and load resistance.

Figure 12. Active clamp equivalent principle schematic

OUTX

VCC

GND

RPD

SUPPLY RAIL

GROUND PLANE

APPLICATION BOARD

LLOAD

Figure 13. Typical demagnetization energy (single pulse, two channels driven simultaneously) at VCC = 24

V and TAMB = 125 °C

IPS2050H, IPS2050H-32, IPS2050HQ, IPS2050HQ-32

Active clamp

DS13779 - Rev 3

page 17/32

IPS2050H Datasheet(PDF) 17 Page - STMicroelectronics