NCP1345 Series

Highly integrated quasi-resonant flyback controller for off-line USB-PD and USB Type-C power converters.

Catalog

Highly integrated quasi-resonant flyback controller for off-line USB-PD and USB Type-C power converters.

Part	Operating Temperature [Min]	Operating Temperature [Max]	Internal Switch(s)	Output Isolation	Control Features	Voltage - Breakdown	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Fault Protection	Mounting Type	Topology	Voltage - Start Up	Supplier Device Package	Package / Case	Package / Case	Package / Case [x]	Package / Case [y]
ON Semiconductor NCP1345Q01D1R2G	-40 °C	125 ¯C		Isolated	Frequency Control Soft Start	800 V	8 V	38 V	Current Limiting Over Load Over Power Over Temperature Over Voltage	Surface Mount	Flyback	17 V	9-SOIC	10-SOP	9 PC Pad	0.154 in	3.9 mm
ON Semiconductor NCP1345Q02D1R2G	-40 °C	125 ¯C		Isolated	Frequency Control Soft Start	800 V	8 V	38 V	Current Limiting Over Load Over Power Over Temperature Over Voltage	Surface Mount	Flyback	17 V	9-SOIC	10-SOP	9 PC Pad	0.154 in	3.9 mm

Catalog

Highly integrated quasi-resonant flyback controller for off-line USB-PD and USB Type-C power converters.

Key Features

• 150-V Wide Range Vcc Architecture

• Auto-Tuning Skip

• Rapid Frequency Foldback

• Constant Output Current Limiting

• SR Spike Reduction Circuitry (Adaptive Gate Drive)

• Improved Frequency Jittering

• 350 KHz high frequency QR

• Internal 700 V Startup w X2 discharge

Description

The NCP1345 is a highly integrated quasi-resonant flyback controller suitable for designing high-performance off-line USB-PD and USB Type-C power converters. The included dual-pin VCC architecture allows direct connection to the aux winding for simplified VCC management with a reduced parts count and increased performance.The NCP1345 also features a precise, primary side based output current limiting circuit to ensure a constant output current limit regardless of programmed output voltage, or nameplate output power.