NCP1028LEDGEVB ON Semiconductor, NCP1028LEDGEVB Datasheet

NCP1028LEDGEVB

Manufacturer Part Number

NCP1028LEDGEVB

Description

EVAL BOARD FOR NCP1028LEDG

Manufacturer

ON Semiconductor

Datasheets

1.NCP1028P065G.pdf (29 pages)

2.NCP1028LEDGEVB.pdf (2 pages)

Specifications of NCP1028LEDGEVB

Design Resources

NCP1028LEDGEVB BOM CP1028LEDGEVB Gerber Files NCP1028LED EVB Schematic

Current - Output / Channel

720mA

Outputs And Type

1, Isolated

Voltage - Output

18V

Voltage - Input

90 ~ 265VAC

Utilized Ic / Part

NCP1028

Core Chip

NCP1028

Topology

Flyback

No. Of Outputs

Output Current

720mA

Output Voltage

18V

Development Tool Type

Hardware - Eval/Demo Board

Leaded Process Compatible

Yes

Mcu Supported Families

NCP1028

Rohs Compliant

Yes

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Features

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

For Use With/related Products

NCP1028LEDG

Other names

NCP1028LEDGEVBOS

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Download datasheet (33Kb)

12/4/2007

Introduction:

The NCP1028LED Evaluation Board is a universal input, off-line power supply intended to

provide a constant current output with a maximum “header” voltage for powering strings of

LEDs. The output has a constant current, constant voltage profile that depends on the circuit

configuration. The evaluation board is configured to provide a nominal current of 700 mA with

an open LED clamp voltage of 18V

The switching topology is a discontinuous flyback converter operating at 100 kHz The output

connector of the demo supply is a Tyco type connector and will either require a mating connector

or the load should be “hard wired” to pad E1 (+) and E2 (-) on the pc board.

Test Equipment Required:

Setup Procedure:

current to the demo board can be measured. The oscilloscope should be set up so that the output

ripple can be monitored.

Set the equipment as shown in the diagram on the next page so that the output voltage and

1. Adjustable, isolated AC power source capable of zero to 265 Vac output and up to 500

2. Digital volt/amp meters to measure output current and voltage to the electronic load.

3. A variable electronic load or rheostat capable of up to a 5 amp load at 24 volts. If an

4. Oscilloscope with probe to monitor output ripple on the demo converter.

mA. AC source should have the capability of measuring output power in watts. If not, an

AC line analyzer or AC wattmeter should be used. Wattmeter should be capable if

reading down to 50 mW (for standby power measurements.)

electronic load is used it is preferable to have it operate in a constant resistance load

mode.

Test Procedure for the NCP1028LEDG Driver

Evaluation Board

Related parts for NCP1028LEDGEVB

NCP1028LEDGEVB Summary of contents

Page 1

Test Procedure for the NCP1028LEDG Driver 12/4/2007 Introduction: The NCP1028LED Evaluation Board is a universal input, off-line power supply intended to provide a constant current output with a maximum “header” voltage for powering strings of LEDs. The output has a ...

Page 2

Vac AC Source AC out Iadj Vadj WATTS (Required if not in AC source) Test Procedure: 1. Switch the electronic load on, set to constant resistance mode and the load adjust to zero load; switch all of the digital ...

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