NCP1568D
NCP1568D is DC-DC Active Clamp Flyback PWM manufactured by onsemi.
feature increases power density of a power converter by increasing the operating frequency while achieving high efficiency. The Active Clamp Flyback (ACF) operation simplifies EMI filter design to avoid interference with other sensitive circuits in the system. The NCP1568D features a HV startup circuit, a strong low side driver, and a 5 V logic level driver for the active clamp FET. The NCP1568D is suitable for a variety of applications including power brick, industrial, tele, lighting, and other applications where power density and efficiency are important requirements.
The NCP1568D also features multimode operation and transitions from ACF mode to Discontinuous Conduction Mode (DCM) to have outstanding light load operation. The NCP1568D further implements skip in standby mode, resulting in excellent standby power. The bination of flexible control scheme and user programmable features allow the use of NCP1568D with Super- Junction MOSFETs (Si) and Gallium Nitride (Ga N) FETs.
Features
- Active Clamp Flyback Topology Aids in ZVS
- Proprietary Multi- Mode Operation to Enhance Efficiency at all
Loads
- Proprietary Adaptive ZVS Algorithm Allows High Frequency
Operation while Reducing EMI
- Adaptive Dead- Time Control Both Main and Active Clamp FETs
- Peak Current- Mode Control with built in Slope pensation
Options
- Flexible Control Scheme and Programmability Allow for
Configuration with Either External Silicon or Ga N FETs
- Programmable Optional Transition to DCM
- DCM Mode Frequency Foldback with Minimum Frequency Clamp
- Quiet Skip Eliminates Audible Noise
- 700 V Startup Circuit
- 0.85 A/1.5 A Source/Sink for Low Side
- 65 m A/150 m A Active Clamp Driver Output
- Programmable Frequency from 100 k Hz to 1 MHz
.onsemi.
MARKING DIAGRAM
TSSOP- 16 DT SUFFIX CASE 948BW
1568 DXXX ALYWG
1568D XXX
A L Y W G
= Specific Device Code = Specific Variant = (D00) = Assembly Location = Wafer Lot = Year = Work Week = Pb- Free Package
(Note: Microdot may be in either...