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NCP12711ADNR2G

更新时间： 2024-09-19 11:14:07
品牌 Logo 应用领域
安森美 - ONSEMI /
页数 文件大小 规格书
25页 1789K
描述
4-45 V Input Current Mode Isolated Flyback PWM Controller

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中文翻译

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NCP12711ADNR2G 数据手册

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DATA SHEET  
www.onsemi.com  
Current Mode PWM  
Controller  
MSOP10, 3x3  
CASE 846AE  
NCP12711  
The NCP12711 is a fixed−frequency peak−current−mode PWM  
controller containing all of the features necessary for implementing  
single−ended power converter topologies. The device operates from  
4 V to 45 V without auxiliary winding and within its thermal  
capabilities. The controller contains a programmable oscillator  
capable of operating from 100 kHz to 1 MHz and integrates slope  
compensation to prevent subharmonic oscillations. The controller  
includes a programmable soft−start, input voltage UVLO protection,  
and an over−power protection (OPP) circuit which limits the total  
power capability of the circuit as the input voltage increases. The  
UVLO pin also features a shutdown comparator which allows for an  
external signal to disable switching and brings the controller into a low  
quiescent state. An onboard op−amp allows the implementation of  
primary−side regulated converters or non−isolated dc−dc converters.  
The NCP12711 contains a suite of protection features including  
cycle−by−cycle peak−current limiting with smooth frequency increase  
and a timer−based overload protection. All protection features place  
the device into a low quiescent fault mode with a 1−s auto−recovery  
period to allow for system recovery if the fault condition is removed.  
MARKING DIAGRAM  
10  
P11x  
AYWG  
G
1
P11x  
= Specific Device Code  
= A  
x
A
Y
W
G
= Assembly Location  
= Year  
= Work Week  
= Pb−Free Package  
PIN CONNECTIONS  
UVLO  
FB  
1
2
3
10  
9
Vin  
Common General Features  
• Wide V Input Range (4 – 45 V)  
cc  
VCC  
DRV  
GND  
CS  
• Internal 7.5−V Regulator  
• Current−Mode Control with Adjustable Slope Compensation  
• 0% Duty Ratio Operation in No−Load Condition  
• Internal Over Power Protection  
SS  
8
RT  
7
4
5
• Single Resistor Programmable Oscillator – 100 kHz to 1 MHz  
• Adjustable Soft−Start on Peak Current and Frequency  
• Programmable Input Voltage UVLO with Hysteresis  
• Shutdown Threshold for External Disable  
COMP  
6
• Overload Protection with 30 ms Overload Timer  
• Internal Operational Amplifier  
ORDERING INFORMATION  
• Fault Auto−recovery Mode with 1−s Auto−recovery Period  
†
Device  
NCP12711ADNR2G MSOP10, 3x3 2,500 / Tape  
(Pb−Free) & Reel  
Package  
Shipping  
•
1 A Source / Sink Gate Driver  
Typical Applications  
†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.  
• Single−ended Flyback and Forward Converters for Electric Vehicles  
• 4 − 45 V Input DC/DC Controller for Auxiliary Power  
© Semiconductor Components Industries, LLC, 2022  
1
Publication Order Number:  
December, 2022 − Rev. 0  
NCP12711/D  
1234567...25

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