NCP3102 반도체 회로 부품 판매점
Wide Input Voltage Synchronous Buck Converter
|
|
 ON Semiconductor |
NCP3102
Wide Input Voltage
Synchronous Buck Converter
www.datashTeheet4Nu.cCoPm3102 is a high efficiency, 10 A DC-DC buck converter
designed to operate from a 5 V to 13.2 V supply. The device is capable
of producing an output voltage as low as 0.8 V. The NCP3102 can
continuously output 10 A through MOSFET switches driven by an
internally set 275 kHz oscillator. The 40-pin device provides an
optimal level of integration to reduce size and cost of the power
supply. The NCP3102 also incorporates an externally compensated
transconductance error amplifier and a capacitor programmable
soft-start function. Protection features include programmable short
circuit protection and under voltage lockout (UVLO). The NCP3102
is available in a 40-pin QFN package.
Features
•ăInput Voltage Range from 4.5 V to 13.2 V
•ă275 kHz Internal Oscillator
•ăGreater than 90% Maximum Efficiency
•ăBoost Pin Operates to 25 V
•ăVoltage Mode PWM Control
•ă0.8 V $1% Internal Reference Voltage
•ăAdjustable Output Voltage by Resistor Divider
•ăCapacitor Programmable Soft-Start
•ă80% Maximum Duty Cycle
•ăInput Undervoltage Lockout
•ăResistor Programmable Current Limit
•ăThis is a Pb-Free Device
http://onsemi.com
QFN40
CASE 485AK
MARKING
DIAGRAM
1 40
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb-Free Package
NCP3102
AWLYYWWG
PIN CONNECTIONS
Applications
•ăServers/Networking
•ăDSP and FPGA Power Supply
•ăDC-DC Regulator Modules
Vin
PWRVCC CPHS BST
VCC
PWRPHS
NCP3102
COMP/DIS TGOUT
FB TGIN
AGND BG PWRGND
GND
Figure 1. Typical Application Diagram
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 16 of this data sheet.
100
Vout 95
90 VIN = 5.0 V
85
80 VIN = 12 V
75
70
65
60
55
GND
50
0 1 2 3 4 5 6 7 8 9 10
OUTPUT CURRENT (A)
Figure 2. Efficiency
©Ă Semiconductor Components Industries, LLC, 2007
November, 2007 - Rev. 2
1
Publication Order Number:
NCP3102/D
NCP3102
FB
16
www.datasheet4u.comVref
COMP
DIS
17
VCC
13
POR
UVLO
-
+
0.8V
-
+
CLOCK
R
Q
PWM
OUT
S
FAULT
BST TGOUT TGIN
24 21 25
+
-
2V
- FAULT
+
0.4V
50mV-550mV
VOCTH
CPHS
RAMP
OSC
VCC
OSC
-
+
LATCH
2V
-
+
VOCTH
SET
10mA
14,15,19,20,23
AGND
Figure 3. Detailed Block Diagram
35
BG
PWRVCC
26-37
PWRPHS
1-4
36-40
CPHS
22
5-12
PWRGND
PIN FUNCTION DESCRIPTION
Pin No
Symbol
1-4 , 36-40
PWRPHS
5-12
PWRGND
13
14,15,19,20,23
16
VCC
AGND
FB
17 COMP/DIS
18
21
22
24
25
26-34
35
NC
TGOUT
CPHS
BST
TGIN
PWRVCC
BG
Description
Power phase node. Drain of the low side power MOSFET and source of the high side
MOSFET.
Power ground. Source of the low side power MOSFET. Connected with large copper
area. High current return for the low side MOSFET.
Supply for the internal driver. Decouple with a 0.1 mF - 1 mF capacitor to AGND as close
to the IC as possible.
Internal driver ground. Reference ground for FB, COMP and other driver circuits.
The input pin to the error amplifier.(inverted input error amplifier) Connect this pin to the
output resistor divider (if used) or directly to the output voltage near the load connection.
Compensation or disable pin. (output error amplifier) Use this pin to compensate the
voltage control feedback loop. The compensation capacitor also acts as a soft-start
capacitor. Pulling the pin below 400 mV will disable the controller.
No connect. This pin can be connected to AGND or not connected.
Output high side MOSFET driver.
The controller phase sensing.
Supply rail for the floating top gate driver.
Gate high side MOSFET
Input supply pins for the high side MOSFET. (Drain)
The current limit set pin.
http://onsemi.com
2
|
PDF 파일 내의 페이지 : 총 18 페이지
제조업체: ON Semiconductor
( onsemi )
NCP3102 converter
데이터시트 다운로드 :
[ NCP3102.PDF ]
[ NCP3102 다른 제조사 검색 ]
국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
관련 데이터시트
NCP3101
Wide Input Voltage Synchronous Buck Converter - ON Semiconductor
NCP3101C
Wide Input Voltage Synchronous Buck Converter - ON Semiconductor
NCP3101CMNTXG
Wide Input Voltage Synchronous Buck Converter - ON Semiconductor
NCP3102
Wide Input Voltage Synchronous Buck Converter - ON Semiconductor