VNQ600 datasheet(14/18 Pages) STMICROELECTRONICS

No. de pieza	VNQ600

Descripción Electrónicos	QUAD CHANNEL HIGH SIDE SOLID STATE RELAY

PDF	18 Pages

Scroll/Zoom	100%

Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

Página de inicio	http://www.st.com

Logo

14 / 18 page

14/18

VNQ600

SO-28 Double island PC Board

Thermal calculation according to the PCB heatsink area

RthA = Thermal resistance Junction to Ambient with one chip ON

RthB = Thermal resistance Junction to Ambient with both chips ON and Pdchip1=Pdchip2

RthC = Mutual thermal resistance

Rthj-amb Vs. PCB copper area in open box free air condition

Chip 1

Chip 2

Tjchip1

Tjchip2

Note

OFF

RthA x Pdchip1 + Tamb

RthC x Pdchip1 + Tamb

OFF

RthC x Pdchip2 + Tamb

RthA x Pdchip2 + Tamb

RthB x (Pdchip1 + Pdchip2) + Tamb

Pdchip1=Pdchip2

(RthA x Pdchip1) + RthC x Pdchip2 + Tamb

(RthA x Pdchip2) + RthC x Pdchip1 + Tamb Pdchip1≠Pdchip2

SO-28 DOUBLE ISLAND THERMAL DATA

Layout condition of Rth and Zth measurements (PCB FR4 area= 58mm x 58mm, PCB thickness=2mm,

Cu thickness=35

µm, Copper areas: 0.5cm2, 3cm2, 6cm2).

2345

PCB Cu heats ink area (cm ^2)/island

RTHj_am b

(°C/W)

RthA

RthB

RthC

VNQ600 Datasheet(PDF) 14 Page - STMicroelectronics