NCP1611ADR2G AC-DC Power Conversion by ON Semiconductor

Critical Conduction Mode (CrM) Power Factor Controller

Status: Active
Series: NCP1611
RoHS: Compliant
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The NCP1611 is active power factor corrected (PFC) controller specifically designed for use as a boost preconverter in ac-dc adapters, flat TVs, lighting ballasts and other medium powered offline applications. The controller is based on an innovative Current Controlled Frequency Foldback(CCFF) method. In this mode, the circuit classically operates in Critical conduction Mode (CrM) when the inductor current exceeds a programmable value. When the current is below this preset level, the NCP1611 linearly reduces the frequency down to about 20 kHz when the current is at a null. CCFF maximizes the efficiency at both nominal and light load. In particular, the standby losses are reduced to a minimum. The controller features a robust suite of protection features to properly handle an array of power supply operating and fault conditions.

Prices starting from US$0.34


Distributor Starting From Stock
Logo for Future Electronics Future Electronics US$0.34
2,500
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Logo for Newark Electronics Newark Electronics US$0.40
-
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Logo for Avnet America Avnet America US$0.34
-
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Logo for element14 element14 US$0.36
-
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Logo for Avnet Asia Avnet Asia US$0.35
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Features

Critical Conduction mode with current controlled frequency foldback
Dynamic Response Enhancer
Soft Overvoltage Protection (S-OVP)
-500 mA/+800 mA Drive Capability
Valley Turn On
Wide Vcc Range of 9.5-35V
Two Vcc Startup Versions: 10.5V (A) and 17V (B)
AC Line Brownout Detection
Saturated Inductor and shorted boost or bypass protection
Open Pin Protection including Ground
Undervoltage and Fast Over voltage protection
Near Unity Power Factor
Cycle-by-cycle current protection
Benefits
Optimizes conversion efficiency across load range
Improved transient response for line and load steps
Reduces accoustic noise and stress in the even of an overvoltage fault
High drive to support wide range of FETS and power levels
Improved efficiency and reduced EMI generation
Easy to Bias even at light load and high line conditions
B version allows smaller Vcc capacitor and faster startup in self biased applications
Protect boost stage from fault conditions
Enhances safe operating monitoring without extra components
Enhanced fault handling
Robust safety handling
Applications
Offline Power Supplies
Flat TVs
High Powered Adapters
Dimmable Fluorescent Ballasts
End Products
Lighting Ballasts
All-in-one Computers
LED Lighting Power Supplies and Drivers
LED Lighting

Specifications

Description NCP1611, with 10.5 V Startup (typ)
Compliance Pb-free Halide free
PFC Mode CRM
Frequency Operation Variable
Control Mode Current Mode
Topology Step-Up
fSW Typ (kHz) Variable
VCC Max (V) 35
Drive Cap. (mA) 500 / 800
UVLO (V) 9
Latch No
UVP Yes
Inhibition Yes
Package Type SOIC-8

Alternative Descriptions

NCP1611 Series Enhanced 9.5 to 35 V Power Factor Controller - SOIC-8 | Future Electronics
Power Factor Controller, Current, 35V, Soic-8, Full Reel | Newark Electronics
Power Factor Correction PWM CONTRLR 0.02mA 8-Pin SOIC N T/R | Avnet America
POWER FACTOR CONTROLLER, CURRENT, 35V, SOIC-8, FULL REEL | element14
PFC, 9.5-35V, 0.8A, 12V, 8SOIC | Farnell


Frequently Asked Questions

Where can I find additional details, specifications and documents for a NCP1611ADR2G?

Additional datasheets, footprints and schematics for NCP1611ADR2G are listed on our Part Details page. You can also find images and similar parts to NCP1611ADR2G on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for NCP1611ADR2G on our Product Comparison page. Access via the 'View Pricing & Stock' button to view NCP1611ADR2G price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does NCP1611ADR2G fall under?

The NCP1611ADR2G is listed under Power Management > AC-DC Power Conversion > Power Factor Controllers.

Can I view similar or alternative parts?

You can view similar parts to NCP1611ADR2G when available in the Power Factor Controllers range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the NCP1611ADR2G you can contact the distributor directly for product support, shipping queries etc.

Is the NCP1611ADR2G RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by ON Semiconductor.

Which authorised distributors for NCP1611ADR2G have stock available?

Authorised distributors including Future Electronics, Newark Electronics, Avnet America, element14 and Avnet Asia have stock available or on a lead time for NCP1611ADR2G.

How do I check stock and lead times for all distributors?

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