Datasheet NCP1200 (ON Semiconductor)

FabricanteON Semiconductor
DescripciónPWM Current-Mode Controller for Low-Power Universal Off-Line Supplies
Páginas / Página16 / 1 — www.onsemi.com. MARKING. DIAGRAMS. SOIC−8. D SUFFIX. CASE 751. PDIP−8. P …
Formato / tamaño de archivoPDF / 288 Kb
Idioma del documentoInglés

www.onsemi.com. MARKING. DIAGRAMS. SOIC−8. D SUFFIX. CASE 751. PDIP−8. P SUFFIX. CASE 626. Features. PIN CONNECTIONS. Typical Applications

Datasheet NCP1200 ON Semiconductor

Línea de modelo para esta hoja de datos

Versión de texto del documento

link to page 14 NCP1200 PWM Current-Mode Controller for Low-Power Universal Off-Line Supplies Housed in SOIC−8 or PDIP−8 package, the NCP1200 represents a major leap toward ultra−compact Switchmode Power Supplies. Due to
www.onsemi.com
a novel concept, the circuit allows the implementation of a complete offline battery charger or a standby SMPS with few external
MARKING
components. Furthermore, an integrated output short−circuit
DIAGRAMS
protection lets the designer build an extremely low−cost AC−DC wall 8 adapter associated with a simplified feedback scheme.
SOIC−8
200Dy With an internal structure operating at a fixed 40 kHz, 60 kHz or
D SUFFIX
ALYW 100 kHz, the controller drives low gate−charge switching devices like 8
CASE 751
G an IGBT or a MOSFET thus requiring a very small operating power. 1 1 Due to current−mode control, the NCP1200 drastically simplifies the design of reliable and cheap offline converters with extremely low 8 acoustic generation and inherent pulse−by−pulse control.
PDIP−8 P SUFFIX
1200Pxxx When the current setpoint falls below a given value, e.g. the output
CASE 626
AWL power demand diminishes, the IC automatically enters the skip cycle 8 YYWWG mode and provides excellent efficiency at light loads. Because this 1 1 occurs at low peak current, no acoustic noise takes place. Finally, the IC is self−supplied from the DC rail, eliminating the xxx = Device Code: 40, 60 or 100 need of an auxiliary winding. This feature ensures operation in y = Device Code: presence of low output voltage or shorts. 4 for 40 6 for 60 1 for 100
Features
A = Assembly Location • L = Wafer Lot No Auxiliary Winding Operation Y, YY = Year • Internal Output Short−Circuit Protection W, WW = Work Week • Extremely Low No−Load Standby Power G, G = Pb−Free Package • Current−Mode with Skip−Cycle Capability • Internal Leading Edge Blanking •
PIN CONNECTIONS
250 mA Peak Current Source/Sink Capability • Internally Fixed Frequency at 40 kHz, 60 kHz and 100 kHz Adj HV • 1 8 Direct Optocoupler Connection • FB 2 7 NC Built−in Frequency Jittering for Lower EMI • CS V SPICE Models Available for TRANsient and AC Analysis 3 6 CC • Internal Temperature Shutdown GND 4 5 Drv • These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant (Top View)
Typical Applications

ORDERING INFORMATION
AC−DC Adapters • See detailed ordering and shipping information on page 14 of Offline Battery Chargers this data sheet. • Auxiliary/Ancillary Power Supplies (USB, Appliances, TVs, etc.) © Semiconductor Components Industries, LLC, 2015
1
Publication Order Number:
April, 2015 − Rev. 19 NCP1200/D