NCP5378MNR2G ON Semiconductor, NCP5378MNR2G Datasheet

NCP5378MNR2G

Manufacturer Part Number

NCP5378MNR2G

Description

IC CTLR 1PH SYNC BUCK 32QFN

Manufacturer

ON Semiconductor

Datasheet

1.NCP5378MNR2G.pdf (18 pages)

Specifications of NCP5378MNR2G

Applications

Controller, Power Supplies for Next-Generation Intel Processors

Voltage - Input

4.3 ~ 7 V

Number Of Outputs

Voltage - Output

0.5 ~ 1.6 V

Operating Temperature

0°C ~ 70°C

Mounting Type

Surface Mount

Package / Case

32-TFQFN Exposed Pad

Output Voltage

0.075 V to 3 V

Output Current

2 mA

Input Voltage

- 0.3 V to + 3 V

Operating Temperature Range

0 C to + 70 C

Mounting Style

SMD/SMT

Isolated/non-isolated

Non Isolated

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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NCP5378

Single Phase Synchronous

Buck Controller with

Integrated Gate Drivers and

Programmable DAC

voltage sensing, differential phase current sensing, adaptive voltage

positioning, and on board gate drivers to provide accurately regulated

power for Intel processors. This controller IC maintains the same

features as the multi−phase product family, but reduces the output to a

single−phase, for lower current systems. Low power mode operation

combined with inductor current sensing reduces system cost by

providing the fastest initial response to dynamic load events.

circuit can provide a low switching loss and high efficiency solution

for notebook and desktop systems. A high performance operational

error amplifier is provided to simplify compensation of the system.

Dynamic Reference Injection further simplifies loop compensation by

eliminating the need to compromise between closed−loop transient

response and Dynamic VID performance.

Features

•

Applications

•

October, 2009 − Rev. 1

The NCP5378 is a single chip solution which combines differential

The gate drive adaptive non overlap and power saving operation

Load Operation

Meets Intel’s VR11.1 Specifications

High Performance Operational Error Amplifier

Internal Soft Start

Dynamic Reference Injection (Patent #US07057381)

DAC Range from 0.5 V to 1.6 V

±0.5% DAC Voltage Accuracy from 1.0 V to 1.6 V

True Differential Remote Voltage Sensing Amplifier

“Lossless” Differential Inductor Current Sensing

Adaptive Voltage Positioning (AVP)

Latched Over Voltage Protection (OVP)

Guaranteed Startup into Pre−Charged Loads

Threshold Sensitive Enable Pin for VTT Sensing

Power Good Output with Internal Delays

Thermally Compensated Current Monitoring

Thermal Shutdown Protection

Adaptive−Non−Overlap Gate Drive Circuit

Integrated MOSFET Drivers

Automatic Power−saving Modes Maximize Efficiency during Light

32−lead QFN

This is a Pb−Free Device

Desktop Power Supplies for Next−generation Intel Chipsets

†For information on tape and reel specifications,

NCP5378MNR2G

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specifications

Brochure, BRD8011/D.

DIFFOUT

VR_RDY

(Note: Microdot may be in either location)

COMP

Device

IMON

VSN

VSP

VFB

ILIM

ORDERING INFORMATION

MARKING DIAGRAM

PIN CONNECTIONS

http://onsemi.com

CASE 488AM

AWLYYWWG

= Assembly Location

= Wafer Lot

= Year

= Work Week

= Pb−Free Package

(Pb−Free)

(Top View)

NCP5378

Package

QFN−32

QFN32

Publication Order Number:

2500/Tape & Reel

Shipping

NCP5378/D

VCC

BST

SWN

VCCP

OFS

†

Related parts for NCP5378MNR2G

NCP5378MNR2G Summary of contents

Page 1

... VSP VSN QFN−32 VFB (Top View) COMP DIFFOUT ILIM ORDERING INFORMATION Device Package NCP5378MNR2G QFN32 (Pb−Free) †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/ VCC BST ...

Page 2

VID0 VID1 VID2 VID3 VID4 VID5 Flexible DAC VID6 VID7 OFS VSN − + VSP Diff Amp DIFFOUT 1.3 V Error Amp + − VFB COMP + VDRP − VDFB CSSUM − CSP + − CSN Gain = 6 RPM ...

Page 3

Table 1. PIN DESCRIPTIONS Pin No. Symbol 1 VR_RDY Open collector output. High indicates that the output is regulating 2 IMON Volt analog signal proportional to the output load current. VSN referenced Clamped to 1.1 Vmax 3 ...

Page 4

ABSOLUTE MAXIMUM RATINGS Rating ELECTRICAL INFORMATION Controller Power Supply Voltages to GND Driver Power Supply Voltages to GND High−Side Gate Driver Supplies: BST to SWN High−Side FET Gate Driver Voltages SWN Switch Node: SWN Low−Side Gate Drive: BG ...

Page 5

ELECTRICAL CHARACTERISTICS 0°C < T < 70°C; 0°C < T < 125°C; 4.75 < Parameter ERROR AMPLIFIER Input Bias Current Open Loop DC Gain Open Loop Unity Gain Bandwidth Open Loop Phase Margin Slew Rate Maximum Output ...

Page 6

ELECTRICAL CHARACTERISTICS 0°C < T < 70°C; 0°C < T < 125°C; 4.75 < Parameter VDROOP AMPLIFIER Open Loop Phase Margin Slew Rate Maximum Output Voltage Minimum Output Voltage Output Source Current Output Sink Current CSSUM AMPLIFIER ...

Page 7

ELECTRICAL CHARACTERISTICS 0°C < T < 70°C; 0°C < T < 125°C; 4.75 < Parameter VR_RDY (Power Good) OUTPUT VR_RDY Output Voltage at Power−up VR_RDY High − Output Leakage Current VR_RDY Upper Threshold Voltage (INTEL) VR_RDY Lower ...

Page 8

ELECTRICAL CHARACTERISTICS 0°C < T < 70°C; 0°C < T < 125°C; 4.75 < Parameter DAC OUTPUT Output Source Current Output Sink Current VID INPUTS Threshold VR11 Mode Leakage Delay before Latching VID Change (VID Deskewing) (Note ...

Page 9

ELECTRICAL CHARACTERISTICS 0°C < T < 70°C; 0°C < T < 125°C; 4.75 < Parameter THERMAL SHUTDOWN Tsd Thermal Shutdown (Note 3) Tsdhys Thermal Shutdown Hysteresis (Note 3) VRM 11 DAC System Voltage Accuracy 3. Guaranteed by ...

Page 10

IN tpdl DRVL DRVL 90% 2V DRVH−SW SW General The NCP5378 is a ramp−pulse−modulated (RPM) controller designed with necessary features for CPU applications. The IC consists of the following blocks: Precision Flexible DAC, Differential Remote Voltage Sense Amplifier, High Performance ...

Page 11

The comp pin will be pulled to ground in a fault condition and should not jump up when the fault cleared. Differential Current Feedback Amplifier A differential amplifier are provided to sense the output current of each phase. The current ...

Page 12

V CCP UVLO threshold. Power Saving Mode The device maintains a RPM operation in power saving mode. The 12VMON input will be used for two purposes: feedforward input supply information for RPM mode and ...