NCP5222 PDF даташит
Спецификация NCP5222 изготовлена «ON Semiconductor» и имеет функцию, называемую «High Performance Dual-Channel / Two-Phase Synchronous Buck Controller». |
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Детали детали
Номер произв | NCP5222 |
Описание | High Performance Dual-Channel / Two-Phase Synchronous Buck Controller |
Производители | ON Semiconductor |
логотип |
28 Pages
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NCP5222
High Performance
Dual-Channel / Two-Phase
Synchronous Buck
Controller for Notebook
Power System
The NCP5222, a fast−transient−response and high−efficiency
dual−channel / two−phase buck controller with built−in gate drivers,
provides multifunctional power solutions for notebook power system.
180° interleaved operation between the two channels / phases has a
capability of reducing cost of the common input capacitors and
improving noise immunity. The interleaved operation also can reduce
cost of the output capacitors with the two−phase configuration. Input
supply voltage feedforward control is employed to deal with wide
input voltage range. On−line programmable and automatic
power−saving control ensures high efficiency over entire load range.
Fast transient response reduces requirement on the output filters. In the
dual−channel operation mode, the two output power rails are regulated
individually. In the two−phase operation mode, the two output power
rails are connected together by an external switch and current−sharing
control is enabled to balance power delivery between phases.
Features
• Wide Input Voltage Range: 4.5 V to 27 V
• Adjustable Output Voltage Range: 0.8 V to 3.3 V
• Option for Dual−Channel and Two−Phase Modes
• Fixed Nominal Switching Frequency: 300 kHz
• 180° Interleaved Operation Between the Two Channels in
Continue−Conduction−Mode (CCM)
• Adaptive Power Control
• Input Supply Voltage Feedforward Control
• Transient−Response−Enhancement (TRE) Control
• Resistive or Inductor’s DCR Current Sensing
• 0.8% Internal 0.8 V Reference
• Internal 1 ms Soft−Start
• Output Discharge Operation
• Built−in Adaptive Gate Drivers
• Input Supplies Undervoltage Lockout (UVLO)
• Output Overvoltage and Undervoltage Protections
• Accurate Over Current Protection
• Thermal Shutdown Protection
• QFN−28 Package
• This is a Pb−Free Device
Typical Applications
• CPU Chipsets Power Supplies
• Notebook Applications
http://onsemi.com
MARKING
DIAGRAM
1
QFN28
CASE 485AR
N5222
ALYWG
G
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
PIN CONNECTIONS
7654321
8 CS2−/
Vo2
9 CS2+
10 EN2/
SKIP2
11 BST2
12 DH2
13 SWN2
14 DL2
NCP5222
AGND
29
CS1−/
Vo1
28
CS1+ 27
EN1/ 26
S KIP1
BST1 25
DH1 24
SWN1 23
DL1 22
15 16 17 18 19 20 21
(Top View)
ORDERING INFORMATION
Device
NCP5222MNR2G
Package
QFN28
(Pb−Free)
Shipping†
4000 /
Tape & Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2010
February, 2010 − Rev. 0
1
Publication Order Number:
NCP5222/D
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NCP5222
CS1− / Vo1
CS1+
1 ICS1
2 FB1
3 CO MP1
4 VIN
Vi n
5 CO MP2
6 FB2
7 ICS2
PGND1 21
PGO OD1 20
VCCP 19
DRVS / 18
2CH
VCC 17
PGO OD2 16
PGND2 15
PGOO D1
PGOO D2
CS2+
CS2− / Vo2
Figure 1. Typical Application Diagram for A Dual−Channel Application
http://onsemi.com
2
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NCP5222
CS1− / Vo1
CS1+
1 ICS1
2 FB1
3 CO MP1
4 VIN
Vi n
5 CO MP2
6 FB2
7 ICS2
PGND1 21
PGOO D1 20
PG OO D1
VCCP 19
DRVS/
2CH
18
VCC 17
PGOO D2 16
PGND2 15 PG OO D2
CS2+
CS2− / Vo2
Figure 2. An Application Diagram for A Two−Phase Application
http://onsemi.com
3
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