NCP1612A3DR2G AC-DC Power Conversion by ON Semiconductor

Critical Conduction Mode (CrM) Power Factor Controller

Status: Active
Series: NCP1612
RoHS: Compliant
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The NCP1612 is active power factor corrected (PFC) controller specifically designed for use as a boost pre-converter 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 NCP1612 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. This device is particularly suited a PFC stage for LLC controllers due to its dedicated PFC_Okay Output.

Prices starting from US$0.44


Distributor Starting From Stock
Logo for Newark Electronics Newark Electronics US$0.49
1,786
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Logo for element14 element14 US$0.44
1,786
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Logo for Avnet America Avnet America US$0.44
-
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Logo for EBV Elektronik EBV Elektronik -
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Logo for Avnet Silica Avnet Silica -
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Features

Critical conduction mode with current controlled frequency foldback
Dynamic Response Enhancer
Soft Overvoltage Protection
-500 mA/+800 mA Drive Capability
Valley turn on
Wide Vcc Range of 9.5-35 Vdc
Two Vcc startup versions: 10.5 V (A) and 17 V (B)
AC Line Brownout Detection
Cycle-by-cycle switch current monitoring
Saturated inductor and shorted boost or bypass diode detection
PFC Okay Output
Latch Off Input
Independent bulk overvoltage and undervoltage monitoring
Open Ground Pin Fault Monitoring
Near Unity Power Factor
Thermal Shutdown
Benefits
Optimizes conversion efficiency across load range
Improved transient response for line and load steps
Reduces accoustic noise and stress in the event of an overvoltage fault
Supports wide range of MOSFETs and power levels
Improved efficiency amd reduced EMI generation
Easy to bias even under light load or high line conditions
B version allows smaller Vcc capacitor and faster startup in self biased applications
Protects boost stage power components during line fault conditions
Enhances system robustness
Enhanced safety monitoring without extra components
Can enable downstream controller of stable PFC rail
Simplifies implemented latch protection for power supply
Increased system reliablity
Simplifies safety testing
Applications
Offline Power Supplies
LED Lighting Drivers and Power Supplies
All-In-One Computers
LED Lighting
End Products
Lighting Ballasts
Flat TV
High Powered Adapters

Specifications

Description NCP1612, VBUV 1V
Compliance Pb-free Halide free
PFC Mode CRM DCM
Frequency Operation Fixed
Control Mode Current Mode
Topology Step-Up
fSW Typ (kHz) Variable
VCC Max (V) 35
Drive Cap. (mA) 500 / 800
UVLO (V) 9
Latch Yes
UVP Yes
Inhibition Yes
Package Type SOIC-10 NB

Alternative Descriptions

Pfc Controller, Current, 35V, Soic-10 | Newark Electronics
PFC CONTROLLER, CURRENT, 35V, SOIC-10 | element14
Power Factor Correction CONTRLR 0.02mA 20KHz 10-Pin SOIC T/R | Avnet America


Frequently Asked Questions

Where can I find additional details, specifications and documents for a NCP1612A3DR2G?

Additional datasheets, footprints and schematics for NCP1612A3DR2G are listed on our Part Details page. You can also find images and similar parts to NCP1612A3DR2G on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for NCP1612A3DR2G on our Product Comparison page. Access via the 'View Pricing & Stock' button to view NCP1612A3DR2G price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does NCP1612A3DR2G fall under?

The NCP1612A3DR2G 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 NCP1612A3DR2G 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 NCP1612A3DR2G you can contact the distributor directly for product support, shipping queries etc.

Is the NCP1612A3DR2G RoHS compliant?

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

Which authorised distributors for NCP1612A3DR2G have stock available?

Authorised distributors including Newark Electronics, element14, Farnell, Avnet America and EBV Elektronik have stock available or on a lead time for NCP1612A3DR2G.

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