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NCP1562B - High Performance Active Clamp/Reset PWM Controller

Download the NCP1562B datasheet PDF. This datasheet also covers the NCP1562A variant, as both devices belong to the same high performance active clamp/reset pwm controller family and are provided as variant models within a single manufacturer datasheet.

General Description

1 Vin Connect the input line voltage directly to this pin to enable the internal startup regulator.

A constant current source supplies current from this pin to the capacitor connected to the VAUX pin, eliminating the need for a startup resistor.

Key Features

  • of the NCP1562 are soft- stop and a cycle skip current limit with a time threshold. Soft- stop circuitry powers down the converter in a controlled manner if a severe fault is detected. The cycle skip detector enables a soft- stop sequence if a continuous overcurrent condition is present. Additional features found in the NCP1562 include line feedforward, frequency synchronization up to 1.0 MHz, cycle- by- cycle current limit with leading edge blanking (LEB), independent under and overvoltage dete.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (NCP1562A_ONSemiconductor.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number NCP1562B
Manufacturer onsemi
File Size 477.61 KB
Description High Performance Active Clamp/Reset PWM Controller
Datasheet download datasheet NCP1562B Datasheet

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Other Datasheets by onsemi

Part Number Description
NCP1562A High Performance Active Clamp/Reset PWM Controller
NCP1565 Highly Integrated Dual-Mode Active Clamp PWM Controller
NCP1566 Dual-Mode Active Clamp PWM Controller
NCP1568 AC-DC Active Clamp Flyback PWM
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
NCP1562A, NCP1562B High Performance Active Clamp/Reset PWM Controller The NCP1562x is a family of voltage mode controllers designed for dc- dc converters requiring high- efficiency and low parts count. These controllers incorporate two in phase outputs with an overlap delay to prevent simultaneous conduction and facilitates soft switching. The main output is designed for driving a forward converter primary MOSFET. The secondary output is designed for driving an active clamp circuit MOSFET, a synchronous rectifier on the secondary side, or an asymmetric half bridge circuit. The NCP1562 family reduces component count and system size by incorporating high accuracy on critical specifications such as maximum duty cycle limit, undervoltage detector and overcurrent threshold.