NCP1129BP65G AC-DC Power Conversion by ON Semiconductor

High Voltage Switching Regulator for Offline SMPS

Status: Unknown
Series: NCP1129
RoHS: Compliant
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The NCP1129 switcher offers everything needed to build reliable and compact AC-DC switching power supplies with minimal surrounding elements. Incorporating an avalanche rated 650 V MOSFET, converters built with the NCP1129 can be safely designed for international conditions without jeopardizing the overall reliability. The NCP1129 implements peak current mode control with adjustable ramp compensation that ensures stability in Continuous Conduction Mode (CCM) operation. With an external resistor, the maximum peak current is adjustable, allowing the designer the ability to inject ramp compensation to stabilize CCM power supplies. A short circuit fault condition is independently detected from the auxiliary winding voltage resulting in improved short circuit protection with true overload detection. The Source pin provides access to the MOSFET source, allowing for overpower compensation. With a supply range up to 26 V, the switcher also provides a jittered 65 kHz or 100 kHz switching frequency operated in peak current mode control. When the power on the secondary side starts to decrease, the switcher automatically folds back its switching frequency down to a minimum level of 26 kHz. As the power further goes down, the part enters skip cycle while limiting the peak current.

Where to Buy

Prices starting from US$0.55

Distributor Stock
Logo for Newark
Newark
-
No stock
Buy Now
Logo for Farnell
Farnell
from US$0.89
16,070
in stock
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Logo for Avnet America
Avnet America
from US$0.55
-
Buy Now

Features

650 V Avalanche Rated MOSFET
FixedFrequency 65 or 100 kHz CurrentMode Control Operation
Frequency Foldback Down to 26 kHz and SkipCycle in Light Load Conditions
Adjustable Current Limit
50 ms Timer-Based Auto-Recovery Short-Circuit Protection
Frequency Jittering in Normal and Frequency Foldback Modes
Option for Auto-Recovery or Latched Short-Circuit Protection
Less than 100 mW Standby Power at High Line
Benefits
Rugged MOSFET for robust design
Ability to scale for efficiency or size
Eliminate acoustic noise and improved efficiency at light loads
Scale for various designs 5W~20W
Provides more robust protection without worrying about the coupling of the aux winding
Improved efficiency at light load / Improved EMI over the entire load
Flexible protection options
EPS 2.0 Compliant
Applications
Power Supply
Aux supply for TV, USB, Appliance
End Products
Power supply for DVD, STB, CD-Player

Specifications

Compliance Pb-free Halide free

Alternative Descriptions

AC/DC CONVERTER, FLYBACK, DIP-7 | Farnell
Ac/Dc Converter, Flyback, Dip-7 |Onsemi NCP1129BP65G | Newark Electronics
Current Mode PWM Controller 7-Pin PDIP Rail | Avnet America


Frequently Asked Questions

Where can I find additional details, specifications and documents for a NCP1129BP65G?

Additional datasheets, footprints and schematics for NCP1129BP65G are listed on our Part Details page. You can also find images and similar parts to NCP1129BP65G on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for NCP1129BP65G on our Product Comparison page. Access via the 'View Pricing & Stock' button to view NCP1129BP65G price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does NCP1129BP65G fall under?

The NCP1129BP65G is listed under Power Management > AC-DC Power Conversion > Offline Regulators.

Can I view similar or alternative parts?

You can view similar parts to NCP1129BP65G when available in the Offline Regulators 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 NCP1129BP65G you can contact the distributor directly for product support, shipping queries etc.

Is the NCP1129BP65G RoHS compliant?

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

Which authorised distributors for NCP1129BP65G have stock available?

Authorised distributors including Farnell, Newark Electronics and Avnet America have stock available or on a lead time for NCP1129BP65G.

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