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TY72011AP2 fiches techniques PDF

ON Semiconductor - Single Ended PWM Controller Featuring QR Operation and Soft Frequency Foldback

Numéro de référence TY72011AP2
Description Single Ended PWM Controller Featuring QR Operation and Soft Frequency Foldback
Fabricant ON Semiconductor 
Logo ON Semiconductor 





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TY72011AP2 fiche technique
Customer Specific Device from ON Semiconductor
TY72011AP2
Advance Information
Single Ended PWM
Controller Featuring QR
Operation and Soft
Frequency Foldback
The TY72011AP2 combines a true Current Mode Control
modulator and a demagnetization detector to ensure full
Discontinuous Conduction Mode in any load/line
conditions and minimum drain voltage switching
(Quasi-Resonant operation). Thanks to its inherent Variable
Frequency Mode (VFM), the controller decreases its
operating frequency at constant peak current whenever the
output power demand diminishes. Associated with
automatic multiple valley switching, this unique
architecture guarantees minimum switching losses and the
lowest power drawn from the mains when operating at
no-load conditions. The internal High-Voltage current
source provides a reliable charging path for the Vcc
capacitor and ensures a clean and short start-up sequence
without deteriorating the efficiency once off.
Finally, the continuous feedback signal monitoring
implemented with an over-current fault protection circuitry
(OCP) makes the final design rugged and reliable. An
internal Over Voltage Protection (OVP) circuit continuously
monitors the Vcc pin and stops the IC whenever its level
exceeds 40 V. The internal OVP connection is also
externally available to precisely adjust the final protection
level to the designer needs.
ORDERING INFORMATION
Device
Package
Shipping
Features
Natural Drain-Source Valley Switching for Lower EMI
and Quasi-Resonant Operation
Current Mode Control
Smooth Frequency Foldback for Low Standby Power
and Minimum Output Ripple at No-Load
Internal 200 ns Leading Edge Blanking on Current
Sense
Wide UVLO Levels: 9.3 to 15 V Typical
250 mA Sink and Source Driver
Wide Operating Voltages: 8.0 to 36 V with Fixed Over
Voltage Protection (OVP) on the VCC or Adjustable
through a Dedicated Pin
Internal Short-Circuit Protection
Integrated 3.0 mA Typ. Start-Up Source
Applications
Off-Line Charger
Standby SMPS
Wall Adapters
Power Supplies For:
DVD Players
Set-Top Boxes, etc.
TYP2011AP2
TYP2011AP2G
PDIP-14
PDIP-14
(Pb-Free)
14
1
PDIP-14
P SUFFIX
CASE 646
25 Units/Rail
25 Units/Rail
MARKING
DIAGRAM
1
TY72011AP2
AWLYYWWG
14
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb-Free Package
PIN CONNECTIONS
HV 1
NC 2
Demag 3
FB 4
Ct 5
OVP 6
NC 7
14 NC
13 VCC
12 Drive
11 Isense
10 GND
9 NC
8 NC
This document contains information on a new product. Specifications and information
herein are subject to change without notice.
©Ă Semiconductor Components Industries, LLC, 2006
October, 2006 - Rev. 2
1
Publication Order Number:
TY72011AP2/D
Free Datasheet http://www.datasheet-pdf.com/

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