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NCP1602 Datasheet, PDF (1/32 Pages) ON Semiconductor – Enhanced, High-Efficiency Power Factor Controller | |||
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NCP1602
Enhanced, High-Efficiency
Power Factor Controller
The 6âpin PFC controller NCP1602 is designed to drive PFC boost
stages. It is based on an innovative Valley Synchronized Frequency
Foldâback (VSFF) method. In this mode, the circuit classically
operates in Critical conduction Mode (CrM) when Vcontrol voltage
exceeds a programmable value Vctrl,FF. When Vcontrol is below this
preset level Vctrl,FF, the NCP1602 (versions [B**] and [D**]) linearly
decays the frequency down to about 30 kHz until Vcontrol reaches the
SKIP mode threshold. VSFF maximizes the efficiency at both
nominal and light load. In particular, the standâby losses are reduced
to a minimum. Like in FCCrM controllers, internal circuitry allows
nearâunity power factor even when the switching frequency is
reduced. Housed in a TSOP6 package, the circuit also incorporates the
features necessary for robust and compact PFC stages, with few
external components.
www.onsemi.com
TSOPâ6
SN SUFFIX
1
CASE 318G
MARKING DIAGRAM
AEA AYWG
G
General Features
⢠NearâUnity Power Factor
⢠TwoâLevel Boost Follower Line Level Dependent (disabled by default)
⢠Critical Conduction Mode (CrM)
⢠Valley Synchronized Frequency Foldâback (VSFF): Low Frequency
Operation is Forced at Low Current Levels (9 preâprogrammed settings).
⢠Works With or Without a Transformer w/ ZCD Winding (simple inductor)
1
AEA
A
Y
W
G
= Specific Device Code
= Assembly Location
= Year
= Work Week
= PbâFree Package
(Note: Microdot may be in either location)
⢠Onâtime Modulation to Maintain a Proper Current Shaping in VSFF Mode
⢠Skip Mode at Very Low Load Current (versions[ B**] and [D**])
⢠Fast Line / Load Transient Compensation (Dynamic Response Enhancer)
PIN CONNECTIONS
VCTRL 1
6 FB
⢠Valley Turnâon
⢠High Drive Capability: â500 mA / +800 mA
⢠VCC Range: from 9.5 V to 30 V
⢠Low Startâup Consumption for:
[**C] & [**D] Versions: Low Vcc Startâup level (10.5 V)
[**A] & [**B] Versions: High Vcc Startâup level (17.0 V)
⢠Line Range Detection for Reduced Crossover Frequency Spread
⢠This is a PbâFree Device
GND 2
CS / ZCD 3
5 VCC
4 DRV
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
Safety Features
⢠Thermal Shutdown
⢠Nonâlatching, OverâVoltage Protection
⢠Second OverâVoltage Protection
⢠BrownâOut Detection
⢠SoftâStart for Smooth Startâup Operation ([**C] &
[**D] Versions)
⢠Over Current Limitation
⢠Disable Protection if the Feedback Pin is Not Connected
⢠Low DutyâCycle Operation if the Bypass Diode is
Shorted
⢠Open Ground Pin Fault Monitoring
Typical Applications
⢠PC Power Supplies
⢠Lighting Ballasts (LED, Fluorescent)
⢠Flat TV
⢠All Off Line Appliances Requiring Power Factor
Correction
© Semiconductor Components Industries, LLC, 2015
1
October, 2015 â Rev. 0
Publication Order Number:
NCP1602/D
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