NCP1028LEDGEVB ON Semiconductor, NCP1028LEDGEVB Datasheet
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NCP1028LEDGEVB
Manufacturer Part Number
NCP1028LEDGEVB
Description
EVAL BOARD FOR NCP1028LEDG
Manufacturer
ON Semiconductor
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
1
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
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 ...