NCP5215 Datasheet, PDF (1/21 Pages) ON Semiconductor – Dual Synchronous Buck Controller for Notebook Power System

NCP5215
Dual Synchronous Buck
Controller for Notebook
Power System
The NCP5215, a high−efficiency and fast−transient−response
dual−channel buck controller, provides a multifunctional power
solution for notebook power system. 180^o interleaved operation
function between the two channels has capabilities of reducing the
common input capacitor requirement and improving noise immunity.
Adaptive−Voltage−Positioning (AVP) control reduces the
requirement of output filter capacitors. Programmable power−saving
operation ensures high efficiency over entire load range. Input
feedforward voltage−mode control is employed to deal with wide
input voltage range. Transient−Response−Enhancement (TRE)
control for the both channels enables fast transient response.
Features
• Wide Input Voltage Range: 4.5 V to 24 V
• Adjustable Output Voltage Range: 0.8 V to 3.0 V
• Selectable Nominal Fixed Switching Frequency:
200 kHz, 300 kHz, and 400 kHz
• 180° Interleaved Operation Function between the Two Channels
• Programmable Adaptive−Voltage−Positioning (AVP) Operation
• Programmable Transient−Response−Enhancement (TRE) Control
• Power Saving Operation under Light Load Condition
• Input Feedforward Voltage Mode Control
• Resistive or Inductor’s DCR Current Sensing
• 1% Internal 0.8 V Reference
• External Soft−Start Operation
• Output Discharge and Soft−Stop
• Built−in Gate Drivers
• Input Supplies Undervoltage Lockout
• Output Overvoltage and Undervoltage Protections
• Accurate Overcurrent Protection
• Thermal Shutdown Protection
• QFN40 Package
• This is a Pb−Free Device
Typical Applications
• Notebook Computers
• CPU Chipset Power Supplies
http://onsemi.com
MARKING
DIAGRAM
1 40
QFN40
MN SUFFIX
CASE 488AR
NCP5215
AWLYYWWG
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb−Free Package
PIN CONNECTIONS
FSET ₁
VCC 2
AGND 3
VREF 4
PGOOD1 ₅
PGOOD2 6
EN1 7
EN2 8
SS1 9
SS2 10
NCP5215
30 BST1
29 VCCP1
28 BG1
27 PGND1
26 ^VIN
25 FPWM#
24 PGND2
23 BG2
22 VCCP2
21 BST2
(Top View)
ORDERING INFORMATION
Device
Package
Shipping
NCP5215MNR2G QFN40 2500/Tape & Reel
(Pb−Free)
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2008
1
October, 2008 − Rev. 5
Publication Order Number:
NCP5215/D