NCP12510 Current-Mode PWM Controller for Off-line Power Supplies

PublishTime：2021-06-22

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.
NCP12510 is improved and pin compatible controller based on very popular flyback controller NCP1250.
●Features:
■Fixed−Frequency 65 kHz or 100 kHz Current−Mode Control Operation
■Frequency Foldback Down to 26 kHz and Skip−Cycle in Light Load Conditions
■Frequency Jittering in Normal and Frequency Foldback Modes
■Internal and Adjustable Over Power Protection (OPP) Circuit
■Auto−Recovery Over Voltage Protection (OVP) on the V-CC Pin
■Internal and Adjustable Slope Compensation
■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
■Improved Reset Time in Latch State
■High Robustness and High ESD Capabilities EPS 2.0 Compliant
■This is a Pb−Free Device

Brand of Product：	ON Semiconductor
Part#：	NCP12510 、 NCP12510ASN65T1G 、 NCP12510BSN65T1G 、 NCP12510CSN65T1G 、 NCP12510DSN65T1G 、 NCP12510ASN100T1G 、 NCP12510BSN100T1G More Part#
Product Category：	Current-Mode PWM Controller 、 highly integrated PWM controller More
Application：	[ Ac−dc Converters for TVs ][ Ac−dc Converters for Set−top Boxes ][ Ac−dc Converters for DVD Players ][ Offline Adapters for Notebooks ][ Offline Adapters for Netbooks ] More
Data Type：	Datasheet More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：	TSOP−6;SOT23−6
Language：	English Chinese Chinese and English Japanese
Date of Creation：	February, 2021
Version Number：	Rev. 6
Data Encoding：	NCP12510/D
Data Size：	806 KB

Data section preview(2pages)

- The full preview is over. If you want to read the whole 28 page document,please Sign in/Register -

Download

+1 Like
Add to Favorites

Recommend

New Products & Solutions

More>

Technical Resources

More>

All reproduced articles on this site are for the purpose of conveying more information and clearly indicate the source. If media or individuals who do not want to be reproduced can contact us, which will be deleted.

Integrated Circuits