DRV8426PWPR datasheet(36/49 Pages) TI1

Part #	DRV8426PWPR

Description	DRV8426 Stepper Driver With Integrated Current Sense, 1/256 Microstepping, STEP/DIR Interface and smart tune Technology

PDF	49 Pages

Scroll/Zoom	100%

Manufacturer	TI1 [Texas Instruments]

Direct Link	http://www.ti.com

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36 / 49 page

DRV8426

SLOSE55 – MAY 2020

www.ti.com

Product Folder Links: DRV8426

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10 Layout

10.1 Layout Guidelines

The VM pin should be bypassed to GND using a low-ESR ceramic bypass capacitor with a recommended value

of 0.01 µF rated for VM. This capacitor should be placed as close to the VM pin as possible with a thick trace or

ground plane connection to the device GND pin.

The VM pin must be bypassed to ground using a bulk capacitor rated for VM. This component can be an

electrolytic capacitor.

A low-ESR ceramic capacitor must be placed in between the CPL and CPH pins. A value of 0.022 µF rated for

VM is recommended. Place this component as close to the pins as possible.

A low-ESR ceramic capacitor must be placed in between the VM and VCP pins. A value of 0.22 µF rated for 16

V is recommended. Place this component as close to the pins as possible.

Bypass the DVDD pin to ground with a low-ESR ceramic capacitor. A value of 0.47 µF rated for 6.3 V is

recommended. Place this bypassing capacitor as close to the pin as possible.

The thermal PAD must be connected to system ground.

DRV8426PWPR Datasheet(PDF) 36 Page - Texas Instruments