Datasheet

iC-WK DEMO WK4D

DEMO BOARD DESCRIPTION

Rev A1, Page 1/3

Figure 1: Component side of WK4D board

ORDERING INFORMATION

Type Order Designation Description/Options

iC-WK Demo

iC-WKL Demo

iC-WKN Demo

WK4D DEMO

WKL4D DEMO

WKN4D DEMO

Evaluation boards for iC-WK, iC-WKL and

iC-WKN; easy to set up for the booster circuit

from the iC-WK/L Application Notes

BOARD WK4D TERMINAL DESCRIPTIONS

(size 100 mm x 80 mm) Name Function

VCC Supply Voltage

GND Ground

CI Capacitor for Power Control

AGND Reference Ground for CI, RM

EN Switching Input for Booster Circuit

MDK Monitor Input for P-Type Laser

Diodes

MDA Monitor Input for N/M-Type Laser

Diodes

LDK Driver Output

LDA Laser Supply/Positive Supply

Terminal of Booster Circuit

CIQ Internal Ground of iC-WK/WKL with

Booster Circuit

RVN Sense Resistor for Overcurrent

Shutdown of Booster Circuit

VN Ground Terminal of Booster Circuit

PAGE 1
iC-WK DEMO WK4D DEMO BOARD DESCRIPTION Rev A1, Page 1/3 ORDERING INFORMATION Type Order Designation Description/Options iC-WK Demo iC-WKL Demo iC-WKN Demo WK4D DEMO WKL4D DEMO WKN4D DEMO Evaluation boards for iC-WK, iC-WKL and iC-WKN; easy to set up for the booster circuit from the iC-WK/L Application Notes BOARD WK4D TERMINAL DESCRIPTIONS (size 100 mm x 80 mm) Name Function VCC GND CI AGND EN MDK Supply Voltage Ground Capacitor for Power Control Reference Ground for CI, RM Switching Input for
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iC-WK DEMO WK4D DEMO BOARD DESCRIPTION Rev A1, Page 2/3 DESCRIPTION The iC-WK/L/N evaluation boards come pre-assebled for use with the RLD-65NE laser diode. The default assembly and current path is highlighted in the below schematic diagram. For hints on dimensioning and other configurations (eg. an external booster circuit) see the the application notes on iC-WK/L, available as a separate document. LDA MDK P-TYPE LASER M-TYPE LASER D2 D3 LDA MDC LDA LDC MDA LDC N-TYPE LASER D1 LDA C1 2.
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iC-WK DEMO WK4D DEMO BOARD DESCRIPTION Rev A1, Page 3/3 ASSEMBLY PART LIST Device C1 Value (typ) Comment 2.