NCP1028P100G

Duty Cycle:	80%
Base Part Number:	NCP1028
Mounting Type:	Through Hole
Supplier Device Package:	7-PDIP
Package / Case:	8-DIP (0.300", 7.62mm), 7 Leads
Operating Temperature:	0°C ~ 125°C (TJ)
Control Features:	--
Fault Protection:	Over Power, Short Circuit
Power (Watts):	25W
Frequency - Switching:	100kHz
Series:	--
Voltage - Supply (Vcc/Vdd):	7.2 V ~ 10 V
Voltage - Start Up:	8.5V
Topology:	Flyback
Voltage - Breakdown:	700V
Internal Switch(s):	Yes
Output Isolation:	Isolated
Part Status:	Not For New Designs
Packaging:	Tube

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< article >NCP1028P100G is a new product recently released by On Semiconductor. It’s a Power Management Integrated Circuit (PMIC) which provides AC-DC (alternating current-direct current) conversion and other offline switch power conversion functions. It’s designed to meet the requirements of portable and consumer electronics.NCP1028P100G is an integrated power management device with peak current mode controllers, a synchronous rectifier, high and low side N-channel MOSFETs and an integrated current sense resistor. This allows for high efficiency AC-DC conversion and integration with the power supply system. It also includes a wide assortment of safety features.NCP1028P100G supports a wide range of input voltages from 3V to 42V and provides up to 100W of output power. Its operating temperature range is from -40°C to 85°C. Before deploying this product, users should check for compliance with local environmental regulations in order to ensure no health risks in the event of operation under extreme conditions.When it comes to working principle, NCP1028P100G works by controlling the power flow between the AC and DC side of a power supply system. The input voltage is first rectified by a bridge rectifier and then the output voltage is closely regulated by an integrated peak current mode controller which provides protection against short circuit, over current and overvoltage.On the DC side, the NCP1028P100G provides high efficiency synchronous rectification using its N-channel MOSFETs. The synchronous rectification removes voltage drops caused by the traditional diode rectification and reduces switching losses.In order to simplify design and reduce cost, the NCP1028P100G also features integrated current sense resistors which are used to measure the voltage drop across the switch nodes. The sensed voltage drop is used by the integrated controller to accurately control the peak current and therefore reduces power dissipation in the switch nodes.The NCP1028P100G is designed to provide reliable offline switching solutions for power supplies in relatively low-cost consumer and portable devices. By leveraging the integrated peak current mode controller and the synchronous rectification, the device can provide reliable and efficient power conversion while meeting the safety requirements of the end application.< /article >

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