This document is an engineering report describing a LCD Monitor power supply utilizing a TOP258PN. This power supply is intended as a general purpose evaluation platform for TOPSwitch-HX.
A Flyback converter configuration built around TOP258PN is used in this power supply to obtain two output voltages. The 5 V output can supply a load current of 2.2 A, and the 12 V output can supply a load current of 2.0 A. This power supply can operate between 90 – 264 VAC.
The 5 V output is the main regulated output. This output is regulated using a TL431 voltage reference. Some feedback is also derived from the 12 V output for improved cross regulation.
The document contains the power supply specification, schematic, bill of materials, transformer documentation, printed circuit layout, and performance data.
| Manufacturer | Power Integrations |
|---|---|
| Category | AC/DC and DC/DC Conversion |
| Sub-Category | AC/DC SMPS - Multi Output |
| Eval Board Part Number | 596-1193-ND |
| Eval Board Supplier | Power Integrations |
| Eval Board |
Board not Stocked
|
| AC Voltage |
115 V
230 V Universal (115 / 230V) |
| Outputs and Type |
2 Isolated
|
| Voltage Out: Highest Current First |
12V, 5V
|
| Current Out |
2.2A, 2A
|
| Output Power |
35 W
|
| Efficiency @ Conditions |
>83%, 230V in, From 50% ~ 100% Full Load
>82%, 115V in, From 50% ~ 100% Full Load |
| No-load Input Power @ Voltage |
150 mW @ 115 V
200 mW @ 230 V |
| Features |
Energy Standard Compliant
Over Voltage Protection Short Circuit Protection Thermal Protection Under Voltage Protection, Brown-Out |
| Switching Frequency |
66 kHz
|
| Internal Switch |
Yes
|
| Component Count + Extras |
62 + 6
|
| Voltage In |
90 ~ 264 VAC
|
| Application / Target Market |
LCD TV / Monitor
|
| Design Author |
Power Integrations
|
| Main I.C. Base Part |
TOP258
|
| Date Created By Author | 2007-07 |
| Date Added To Library | 2017-05 |
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