NCP1247AD065R2G AC-DC Power Conversion by ON Semiconductor

PWM Controller, Fixed Frequency, Flyback Converters, USB-Pd Reference Design

Status: Unknown
Series: NCP1247
RoHS: Compliant
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The NCP1247 is a new fixed-frequency current-mode PWM controller featuring Dynamic Self-Supply. This function greatly simplifies the design of the auxiliary supply and the Vcc capacitor by activating the internal startup current source to supply the controller during start-up, transients, latch, stand-by etc. This device contains a special HV detector which detects the application unplug from the AC input line and triggers the X2 discharge current. The HV structure also includes brown-out detection circuitry. The NCP1247 features a timer-based fault detection that ensures the detection of overload and an adjustable power compensation to help keep the maximum power independent of the input voltage. Due to frequency foldback, the controller exhibits excellent efficiency in light load condition while still achieving very low standby power consumption. Internal frequency jittering, ramp compensation, and a versatile latch input make this controller an excellent candidate for robust power supply designs. A dedicated off mode allows the SMPS to reach extremely low no load input power consumption when combined with secondary side controller NCP4353 or NCP4354. When used together, the SMPS is capable of achieving <10 mW no load input power consumption. The secondary side controller signals the NCP1247 to enter a sleep mode, minimizing the power consumption of the control circuitry. The NCP1247 is very similar in its functionality to the NCP1246. The NCP1247 is designed to get better performance out of systems with synchronous rectification. NCP1247 - Adds C & D option for different Brown Out threshold - Enhanced operation with Sync Rec in light load - Increased HV timer - Revised X2 discharge sequence This product is IEC60950 compliant. Please see the test report and certification in the Conformance report section below.

Where to Buy

Prices starting from US$0.34

Distributor Stock
Logo for Farnell
Farnell
from US$0.34
137,430
in stock
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Logo for element14
element14
from US$0.48
2,126
in stock
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Logo for Newark Electronics
Newark Electronics
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-
Buy Now

Features

Frequency foldback and skip mode
Timer-based overload protection with latched (A version) or auto-recovery (B version) operation
High-voltage startup with dynamic self supply
Integrated brown-out detection
Frequency Modulation
Adjustable overpower protection
Latch off input
Benefits
Optimized efficiency across the entire load range
Protection against overcurrent and short circuit
Simplifies the design of the auxiliary supply
Protects against any drops in line voltage
Softened EMI signature
Automatically adjusts the current limit depending on the line input voltage (high line or low line)
Protection against faults
Applications
AC-DC Adapters
USB-Pd (USB Power Delivery)
Notebook Computers
End Products
LCD TV power supplies
Offline USB Pd
Offline USB Power Delivery SMPS

Specifications

Compliance Pb-free Halide free

Alternative Descriptions

Pwm Cont, Current Mode, 28V, Soic-7 | Newark Electronics


Frequently Asked Questions

Where can I find additional details, specifications and documents for a NCP1247AD065R2G?

Additional datasheets, footprints and schematics for NCP1247AD065R2G are listed on our Part Details page. You can also find images and similar parts to NCP1247AD065R2G on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for NCP1247AD065R2G on our Product Comparison page. Access via the 'View Pricing & Stock' button to view NCP1247AD065R2G price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does NCP1247AD065R2G fall under?

The NCP1247AD065R2G is listed under Power Management > AC-DC Power Conversion > Offline Controllers.

Can I view similar or alternative parts?

You can view similar parts to NCP1247AD065R2G when available in the Offline 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 NCP1247AD065R2G you can contact the distributor directly for product support, shipping queries etc.

Is the NCP1247AD065R2G RoHS compliant?

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

Which authorised distributors for NCP1247AD065R2G have stock available?

Authorised distributors including Farnell, element14 and Newark Electronics have stock available or on a lead time for NCP1247AD065R2G.

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