NCP12510DSN65T1G集成电路（IC）的ACDC转换器离线开关规格书PDF中文资料

NCP12510DSN65T1G属于集成电路（IC）的ACDC转换器离线开关。由安森美半导体公司制造生产的NCP12510DSN65T1GAC DC 转换器，离线开关该系列是元器件级控制产品，用于构建将交流市电转换为直流电（通常电压大幅降低）的设备。集成和未集成系统主要开关元件的器件均包括在内。由于高输入输出电压比，以及此类系统中通常需要隔离，这些器件通常与外部变压器配合使用。尽管通常使用定制变压器来实现此用途，但也有许多专门用于此用途的库存产品，请参见“开关转换器，SMPS 变压器”标题。

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.

特性 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 VCC 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

Typical Applications

• Ac−dc Converters for TVs, Set−top Boxes and DVD Players

• Offline Adapters for Notebooks and Netbooks