NCP1028LEDGEVB ON Semiconductor, NCP1028LEDGEVB Datasheet - Page 15
![EVAL BOARD FOR NCP1028LEDG](/photos/28/39/283973/ncp1028ledgevb_sml.jpg)
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
Fault Condition – Output Too Low
feedback is ensured by a two-loop control imposing either
constant output voltage (CV) or constant output current
(CC), for instance in a battery charger. In CC mode, the
output voltage falls down below the original target but the
feedback loop is kept closed by the CC controller. For that
This particular mode of operation occurs when the
Figure 28. In this particular case, the output goes low but the timer is not started since the FB pin is still held
by the optocoupler. Due to the UVLO circuit, the controller safely stops operation at V
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NCP1028
15
reason, the controller becomes un-able to detect a real
output short-circuit since Ipflag will never be asserted.
Due to a good winding coupling, the primary side auxiliary
collapsing will ensure a proper fault detection via the
UVLO internal circuit. Figure 28 depicts this operating
way.
CC
= VCC
(min)
.