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NCP12510

更新时间： 2024-09-19 01:04:43
品牌 Logo 应用领域
安森美 - ONSEMI /
页数 文件大小 规格书
27页 607K
描述
Current-Mode PWM Controller for Off-line Power Supplies

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NCP12510 数据手册

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NCP12510  
Current-Mode PWM  
Controller for Off-line  
Power Supplies  
The NCP12510 is a highly integrated PWM controller capable of  
delivering a rugged and high performance offline power supply in a  
tiny TSOP−6 package. With a voltage supply range up to 35 V, the  
controller hosts a jittered 65−kHz or 100−kHz switching circuitry  
operated in peak current mode control. When the power on the  
secondary side starts decreasing, the controller automatically folds  
back its switching frequency down to a minimum level of 26 kHz. As  
the power further goes down, the part enters skip cycle while limiting  
the peak current.  
Over Power Protection (OPP) is a difficult exercise especially when  
no−load standby requirements drive the converter specifications. The  
ON Semiconductor proprietary integrated OPP allows harness the  
maximum delivered power without affecting the standby performance  
simply via two external resistors. An Over Voltage Protection (OVP)  
input is also combined on the same pin and protects the whole circuitry  
in case of optocoupler destruction or adverse open loop operation.  
Finally, a timer−based short−circuit protection offers the best  
protection scheme, allowing precisely select the protection trip point  
without caring of a loose coupling between the auxiliary and the power  
windings.  
www.onsemi.com  
MARKING  
DIAGRAM  
TSOP−6  
(SOT23−6)  
SN SUFFIX  
CASE 318G  
5DxAYWG  
G
1
1
STYLE 13  
5Dx  
x
A
= Specific Device Code  
= A, 2, J, or K  
= Assembly Location  
= Year  
= Work Week  
= Pb−Free Package  
Y
W
G
(Note: Microdot may be in either location)  
PIN CONNECTIONS  
NCP12510 is improved and pin compatible controller based on very  
popular flyback controller NCP1250.  
GND  
FB  
1
2
6
5
4
DRV  
Features  
V
CC  
• Fixed−Frequency 65 kHz or 100 kHz Current−Mode Control  
Operation  
OPP/Latch  
3
CS  
• Frequency Foldback Down to 26 kHz and Skip−Cycle in Light Load  
Conditions  
(Top View)  
• Frequency Jittering in Normal and Frequency Foldback Modes  
• Internal and Adjustable Over Power Protection (OPP) Circuit  
• Auto−Recovery Over Voltage Protection (OVP) on the VCC Pin  
• Internal and Adjustable Slope Compensation  
ORDERING INFORMATION  
See detailed ordering, marking and shipping information on  
page 2 of this data sheet.  
• Internal Fixed 4 ms Soft−Start  
• Auto−Recovery or Latched Short−Circuit Protection  
• Pre−Short Ready for Latched OCP Version  
• OVP/OTP Latch Input for Improved Robustness  
• +300 mA/ −500 mA Source/Sink Drive Capability  
• Improved Consumption  
• EPS 2.0 Compliant  
• This is a Pb−Free Device  
Typical Applications  
• Ac−dc Converters for TVs, Set−top Boxes and DVD  
Players  
• Improved Reset Time in Latch State  
• Offline Adapters for Notebooks and Netbooks  
• High Robustness and High ESD Capabilities  
© Semiconductor Components Industries, LLC, 2016  
1
Publication Order Number:  
September, 2016 − Rev. 1  
NCP12510/D  
1234567...27

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