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ON Semiconductor - Dual Output 3 Phase +1/0 Phase Controller

Numéro de référence NCP6121
Description Dual Output 3 Phase +1/0 Phase Controller
Fabricant ON Semiconductor 
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NCP6121 fiche technique
NCP6121
Dual Output 3 Phase +1/0
Phase Controller with
Single SVID Interface for
Desktop and Notebook CPU
Applications
http://onsemi.com
The NCP6121 dual output three plus one phase buck solution is
optimized for Intel VR12 compatible CPUs. The controller combines
true differential voltage sensing, differential inductor DCR current
sensing, input voltage feedforward, and adaptive voltage positioning
to provide accurately regulated power for Desktop applications. The
control system is based on DualEdge pulsewidth modulation
(PWM) combined with DCR current sensing providing the fastest
initial response to dynamic load events and reduced system cost. It
also sheds to single phase during light load operation and can auto
frequency scale in light load while maintaining excellent transient
performance.
Dual high performance operational error amplifiers are provided to
simplify compensation of the system. Patented Dynamic Reference
Injection further simplifies loop compensation by eliminating the need
to compromise between closedloop transient response and Dynamic
VID performance. Patented Total Current Summing provides highly
accurate current monitoring for droop and digital current monitoring.
MARKING
DIAGRAM
1 52
QFN52
CASE 485BE
NCP6121
AWLYYWWG
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = PbFree Package
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 27 of this data sheet.
Features
Meets Intel VR12 and IMVP7 Specifications
Current Mode Dual Edge Modulation for Fastest Initial Response to
Transient Loading
Dual High Performance Operational Error Amplifier
Switching Frequency Range of 200 kHz – 1.0 MHz
One Digital Soft Start Ramp for Both Rails
Dynamic Reference Injection
Accurate Total Summing Current Amplifier
DAC with Droop Feedforward Injection
Dual High Impedance Differential Voltage and Total
Current Sense Amplifiers
PhasetoPhase Dynamic Current Balancing
“Lossless” DCR Current Sensing for Current Balancing
Summed Thermally Compensated Inductor Current
Sensing for Droop
Startup into PreCharged Loads While Avoiding False
OVP
Power Saving Phase Shedding
Vin Feed Forward Ramp Slope
Pin Programming for Internal SVID parameters
Over Voltage Protection (OVP) and Under Voltage
Protection (UVP)
Over Current Protection (OCP)
Dual Power Good Output with Internal Delays
These Devices are PbFree and are RoHS Compliant
True Differential Current Balancing Sense Amplifiers
for Each Phase
Adaptive Voltage Positioning (AVP)
Applications
Desktop and Notebook Processors
© Semiconductor Components Industries, LLC, 2013
January, 2013 Rev. 2
1
Publication Order Number:
NCP6121/D

PagesPages 28
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