NCP81243MNTXG DC-DC Power Conversion by ON Semiconductor

Multi-Phase Buck Controller for IMVP8

Status: Active
Series: NCP81243
RoHS: Compliant
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The NCP81243 is a Multi-Phase buck solution is optimized for Intel IMVP8 compatible CPUs with user configurations of 3/2/1+ 2/1 phases, including an option to do 4+1. The controller combines true differential voltage sensing, differential inductor DCR current sensing, input voltage feed-forward, and adaptive voltage positioning to provide accurate regulated power for Desktop applications. The control system is based on Dual-Edge pulse-width modulation (PWM) combined with DCR current sensing providing the fastest initial response to dynamic load events at reduced system cost.

Where to Buy

Prices starting from US$1.49

Distributor Stock
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Farnell
from US$1.56
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Newark Electronics
from US$1.49
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Future Electronics
from US$1.60
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Avnet America
from US$1.59
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element14
from US$1.68
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Avnet Asia
from US$1.54
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EBV Elektronik
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Features

Meets Intel's IMVP8 Specification
Current Mode Dual Edge Modulation for Fast Initial Response to Transient Loading
Dual High Performance Operational Error Amplifier
One Digital Soft Start Ramp for Both Rails
Dynamic Reference Injection® (Patent #US07057381)
Accurate Total Summing Current Amplifier(Patent #US006683441)
DAC with Droop Feed-forward Injection(Patent Pending)
Dual High Impedance Differential Voltage and Total Current Sense Amplifiers
Phase-to-Phase Dynamic Current Balancing
“Lossless” DCR Current Sensing for Current Balancing
Summed Compensated Inductor Current Sensing for Droop
True Differential Current Balancing Sense Amplifiers for Each Phase
Adaptive Voltage Positioning (AVP)
Switching Frequency Range of 200KHz – 1.5MHz
Startup into Pre-Charged Loads while avoiding False OVP
Vin Feed Forward Ramp Slope
Over Voltage Protection (OVP) & Under Voltage Protection (UVP)
Over Current Protection (OCP)
Dual Power Good Output with Internal Delays
Applications
Industrial Servers
End Products
Embedded Systems Power Management

Specifications

Description NCP81243, Industrial Temp Range IMVP8 3+2, Notebook & Desktop 2 Rail Controller
Compliance Pb-free Halide free
Topology Step-Down
Phases 1/2/3
Control Mode Voltage Mode
VCC Min (V) 4.75
VCC Max (V) 5.25
fSW Typ (kHz) 300 - 1200
Package Type QFN-52

Alternative Descriptions

Industrial Temp Range Imvp8 3+2, Notebook & Desktop 2 Rail Controller/Reel |Onsemi NCP81243MNTXG | Newark Electronics
Multi-Phase Controller | Future Electronics
DC DC Cntrlr Single-OUT Buck Controller 4.75V to 5.25V 52-Pin QFN T/R | Avnet America
DC/DC CTRL, BUCK, 1.4MHZ, 5.25V, QFN-52 | element14


Frequently Asked Questions

Where can I find additional details, specifications and documents for a NCP81243MNTXG?

Additional datasheets, footprints and schematics for NCP81243MNTXG are listed on our Part Details page. You can also find images and similar parts to NCP81243MNTXG on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for NCP81243MNTXG on our Product Comparison page. Access via the 'View Pricing & Stock' button to view NCP81243MNTXG price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does NCP81243MNTXG fall under?

The NCP81243MNTXG is listed under Power Management > DC-DC Power Conversion > Controllers.

Can I view similar or alternative parts?

You can view similar parts to NCP81243MNTXG when available in the 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 NCP81243MNTXG you can contact the distributor directly for product support, shipping queries etc.

Is the NCP81243MNTXG RoHS compliant?

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

Which authorised distributors for NCP81243MNTXG have stock available?

Authorised distributors including Newark Electronics, Future Electronics, Avnet America, element14 and Avnet Asia have stock available or on a lead time for NCP81243MNTXG.

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