NCP1605 Datasheet, PDF (1/32 Pages) ON Semiconductor – Enhanced, High Voltage and Efficient Standby Mode, Power Factor Controller

NCP1605, NCP1605A
Enhanced, High Voltage and
Efficient Standby Mode,
Power Factor Controller
The NCP1605 is a controller that exhibits near−unity power factor
while operating in fixed frequency, Discontinuous Conduction Mode
(DCM) or in Critical Conduction Mode (CRM).
Housed in a SOIC−16 package, the circuit incorporates all the
features necessary for building robust and compact PFC stages, with
a minimum of external components. In addition, it integrates the skip
cycle capability to lower the standby losses to a minimum.
General Features
• Near−Unity Power Factor
• Fixed Frequency, Discontinuous Conduction Mode Operation
• Critical Conduction Mode Achievable in Most Stressful Conditions
• Lossless High Voltage Current Source for Startup
• Soft Skipt Cycle for Low Power Standby Mode
• Switching Frequency up to 250 kHz
• Synchronization Capability
• Fast Line / Load Transient Compensation
• Valley Turn On
• High Drive Capability: −500 mA / +800 mA
• Signal to Indicate that the PFC is Ready for Operation
(“pfcOK” Pin)
• V_CC range: from 10 V to 20 V
• Follower Boost Operation
• Two V_CC Turn−On Threshold Options:
15 V for NCP1605, 10.5 V for NCP1605A
• This is a Pb−Free Device
Safety Features
• Output Under and Overvoltage Protection
• Brown−Out Detection
• Soft−Start for Smooth Startup Operation
• Overcurrent Limitation
• Zero Current Detection Protecting the PFC stage from Inrush
Currents
• Thermal Shutdown
• Latched Off Capability
Typical Applications
• PC Power Supplies
• All Off Line Appliances Requiring Power Factor Correction
http://onsemi.com
1
SOIC−16
D SUFFIX
CASE 751B
MARKING
DIAGRAMS
16
NCP1605G
AWLYWW
1
16
NCP1605AG
AWLYWW
1
A = Assembly Location
WL = Wafer Lot
Y = Year
WW = Work Week
G = Pb−Free Package
PIN CONNECTIONS
STBY 1
BO 2
V_control 3
FB 4
CS_{in 5}
CS_out/ZCD 6
Ct 7
OSC/SYNC 8
(Top View)
16 HV
15 NC
14 OVP/UVP
13 STDWN
12 pfcOK/REF5V
11 V_CC
10 DRV
9 GND
ORDERING INFORMATION
Device
Package Shipping^†
NCP1605DR2G
SOIC−16 2500/Tape & Reel
(Pb−Free)
NCP1605ADR2G SOIC−16 2500/Tape & Reel
(Pb−Free)
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2009
1
April, 2009 − Rev. 7
Publication Order Number:
NCP1605/D