DataSheet26.com

NCP5424 PDF даташит

Спецификация NCP5424 изготовлена ​​​​«ON Semiconductor» и имеет функцию, называемую «Dual Synchronous Buck Controller».

Детали детали

Номер произв NCP5424
Описание Dual Synchronous Buck Controller
Производители ON Semiconductor
логотип ON Semiconductor логотип 

18 Pages
scroll

No Preview Available !

NCP5424 Даташит, Описание, Даташиты
NCP5424
Dual Synchronous
Buck Controller with Input
Current Sharing
The NCP5424 is a flexible dual N−Channel synchronous buck
controller utilizing V2t control for fast transient response and
excellent line and load regulation. This highly versatile controller can
be configured as a single two phase output converter that draws
programmable amounts of current from two different input voltages or
all current from one supply. The NCP5424 can also be configured as
two independent out−of−phase controllers.
Using the NCP5424 in a current sharing input configuration is ideal
for applications where more power is required than is available from
one supply, such as video cards or other plug−in boards. When
configured as a dual output controller, the output of one controller can
be divided down and used as the reference for the second controller.
This tracking capability is useful in applications such as Double Data
Rate (DDR) Memory power where the termination voltage must track
VDD.
The NCP5424 provides a cycle−to−cycle current limit on
Controller 2 allowing the system to handle transient overcurrent
events and a hiccup mode overcurrent protection on Controller 1
allowing lossless short circuit protection. In addition, the NCP5424
provides Soft−Start, undervoltage lockout, and built−in adaptive FET
www.DataSheet4U.com
nonoverlap time to prevent shoot through.
Features
Hiccup Mode Current Limit (Controller 1)
Cycle−to−Cycle Current Limit (Controller 2)
Programmable Soft−Start
100% Duty Cycle for Enhanced Transient Response
150 kHz to 600 kHz Programmable Frequency Operation
Switching Frequency Set by Single Resistor
Out−Of−Phase Synchronization Between the Channels Reduces the
Input Filter Requirement
Undervoltage Lockout
Pb−Free Packages are Available*
Applications
Video Graphics Card
DDR Memory
High Current (Two−Phase) Power Supplies
Dual Output DC−DC Converters
http://onsemi.com
16
1
SOIC−16
D SUFFIX
CASE 751B
PIN CONNECTIONS AND
MARKING DIAGRAM
1
GATE(H)1
GATE(L)1
GND
BST
IS+1
IS−
VFB1
COMP1
16
GATE(H)2
GATE(L)2
VCC
ROSC
IS+2
VFB+2
VFB−2
COMP2
A = Assembly Location
WL = Wafer Lot
Y = Year
WW = Work Week
ORDERING INFORMATION
Device
Package
Shipping
NCP5424D
SOIC−16
48 Units/Rail
NCP5424DG
NCP5424DR2
SOIC−16
(Pb−Free)
SOIC−16
48 Units/Rail
2500 Tape & Reel
NCP5424DR2G SOIC−16 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 Specifications
Brochure, BRD8011/D.
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2005
March, 2005 − Rev. 4
1
Publication Order Number:
NCP5424/D









No Preview Available !

NCP5424 Даташит, Описание, Даташиты
12 V
5.0 V
+ C2
+ C1
220 mF 220 mF
NCP5424
+ C17
220 mF
3.3 V
+ C18
220 mF
C6
0.1 mF
R1 R2
xk xk
L2
+ C3/4/5 1.3 mH/15 A
680 mF/
4V
Q3
MTD60N03
Q4
MTD90N02
R3
x k ± 1%
R4
x k ± 1%
R5
5 k ± 1%
C8
.22 mF
R6
10 k ± 1%
C11
1.0 mF
U1
VCC
BST
GATE(H)1 GATE(H)2
GATE(L)1 GATE(L)2
IS+1
IS+2
NCP5424
IS− VFB+2
COMP1
COMP2
VFB1
GND
VFB−2
ROSC
R12
30.9 k
Q1 MTD60N03
L1
1.3 mH/15 A
Q2
MTD90N02
R17
4k
C14
0.1 mF
C19/20/21
+ 680 mF/
4V
C13
0.01 mF
1.5 V @ 20 A
Figure 1. Two−Phase Buck Regulator Application, with Input Current Sharing
http://onsemi.com
2









No Preview Available !

NCP5424 Даташит, Описание, Даташиты
NCP5424
MAXIMUM RATINGS
Rating
Value
Unit
Operating Junction Temperature, TJ
Storage Temperature Range, TS
ESD Susceptibility (Human Body Model)
150
−65 to +150
2.0
°C
°C
kV
Package Thermal Resistance, SOIC−16: Junction−to−Case, RqJC
Junction−to−Ambient, RqJA
28 °C/W
115 °C/W
Lead Temperature Soldering:
Reflow: (SMD styles only) (Note 1)
230 peak
°C
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
1. 60 second maximum above 183°C.
MAXIMUM RATINGS
Pin Symbol
Pin Name
VCC
COMP1, COMP2
IC Power Input
Compensation Capacitor for Channel 1 or 2
VFB1, VFB+2, VFB−2
BST
Voltage Feedback Input for Channel 1 or 2
Power Input for GATE(H)1, 2
ROSC
GATE(H)1,
GATE(H)2
Oscillator Resistor
High−Side FET Driver for Channel 1 or 2
GATE(L)1, GATE(L)2
GND
Low−Side FET Driver for Channel 1 or 2
Ground
IS+1, IS+2
Positive Current Sense for Channel 1 or 2
IS− Negative Current Sense for Channels 1 and 2
VMAX
16 V
4.0 V
5.0 V
20 V
4.0 V
20 V
VMIN
−0.3 V
ISOURCE
N/A
ISINK
1.5 A peak, 200 mA DC
−0.3 V
1.0 mA
3.5 mA
−0.3 V
1.0 mA
1.0 mA
−0.3 V N/A 1.5 A peak, 200 mA DC
−0.3 V
1.0 mA
1.0 mA
−0.3 V 1.5 A peak, 200 mA DC 1.5 A peak, 200 mA DC
16 V
0V
6.0 V
6.0 V
−0.3 V 1.5 A peak, 200 mA DC 1.5 A peak, 200 mA DC
0 V 1.5 A peak, 200 mA DC
N/A
−0.3 V
1.0 mA
1.0 mA
−0.3 V
1.0 mA
1.0 mA
PACKAGE PIN DESCRIPTION
PIN # SYMBOL
FUNCTION
1 GATE(H)1 High Side Switch FET driver pin for channel 1.
2 GATE(L)1 Low Side Synchronous FET driver pin for channel 1.
3 GND Ground pin for all circuitry contained in the IC. This pin is internally bonded to the substrate of the IC.
4 BST Power input for GATE(H)1 and GATE(H)2 pins.
5 IS+1 Positive input for channel 1 overcurrent comparator.
6 IS− Negative input for channels 1 and 2 overcurrent comparator.
7 VFB1 Error amplifier inverting input for channel 1.
8 COMP1 Channel 1 Error Amp output. PWM Comparator reference input. A capacitor to LGND provides Error Amp compensation.
The same capacitor provides Soft−Start timing for channel 1. This pin also disables the channel 1 output when pulled
below 0.3 V.
9 COMP2 Channel 2 Error Amp output. PWM Comparator reference input. A capacitor to LGND provides Error Amp compensation
and Soft−Start timing for channel 2. Channel 2 output is disabled when this pin is pulled below 0.3 V.
10 VFB−2 Error amplifier inverting input for channel 2.
11 VFB+2 Error amplifier noninverting input for channel 2.
12 IS+2 Positive input for channel 2 overcurrent comparator.
13 ROSC Oscillator frequency pin. A resistor from this pin to ground sets the oscillator frequency.
14 VCC Input Power supply pin.
15 GATE(L)2 Low Side Synchronous FET driver pin for channel 2.
16 GATE(H)2 High Side Switch FET driver pin for channel 2.
http://onsemi.com
3










Скачать PDF:

[ NCP5424.PDF Даташит ]

Номер в каталогеОписаниеПроизводители
NCP5422A(NCP5422A / NCP5423) Dual Out-of-Phase Synchronous Buck ControllerON Semiconductor
ON Semiconductor
NCP5423(NCP5422A / NCP5423) Dual Out-of-Phase Synchronous Buck ControllerON Semiconductor
ON Semiconductor
NCP5424Dual Synchronous Buck ControllerON Semiconductor
ON Semiconductor
NCP5424ADual Synchronous Buck ControllerON Semiconductor
ON Semiconductor

Номер в каталоге Описание Производители
TL431

100 мА, регулируемый прецизионный шунтирующий регулятор

Unisonic Technologies
Unisonic Technologies
IRF840

8 А, 500 В, N-канальный МОП-транзистор

Vishay
Vishay
LM317

Линейный стабилизатор напряжения, 1,5 А

STMicroelectronics
STMicroelectronics

DataSheet26.com    |    2020    |

  Контакты    |    Поиск