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Application Report
SLVA460–March 2011
Solenoid Driving With DRV8841/42
Jose Quiñones ..................................................................................................... Analog Motor Drives
ABSTRACT
This document is provided as a supplement to the DRV8841 (SLVSAC0) and DRV8842 (SLVSAB8)
datasheets. It details a technique utilizing either the DRV8841 or DRV8842 as a multiple half H-Bridge
power output to drive solenoid inductive loads.
Contents
1 Introduction .................................................................................................................. 2
2 DRV8841/42 H-Bridge Power Stage ..................................................................................... 3
3 Connection Styles ........................................................................................................... 7
4 Protection .................................................................................................................... 8
List of Figures
1 A Power FET Transistor and a Freewheeling Diode Used to Drive a Solenoid Valve............................. 2
2 An H-Bridge Block Utilized to Drive a Solenoid Valve ................................................................. 3
3 DRV8841 H-Bridge A Block Diagram .................................................................................... 4
4 The Half H-Bridge........................................................................................................... 5
5 DRV8841’s Half H-Bridge Ddriving a Solenoid Valve.................................................................. 6
6 Different Solenoid Connection Styles on a Per H-Bridge Basis ...................................................... 7
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SLVA460–March 2011 Solenoid Driving With DRV8841/42
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Verzeichnis
- ・ Blockdiagramm on Seite 3 Seite 4
- ・ Anwendungsbereich on Seite 9
