NCP1345: Highly integrated quasi-resonant flyback controller for off-line USB-PD and USB Type-C power converters.

Datasheet: High-Voltage Quasi-Resonant Flyback Controller With USB-PD Optimization
Rev. 0 (918kB)
Product Overview
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Product Change Notification
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.
Features   Benefits
     
  • 150-V Wide Range Vcc Architecture
 
  • Reduces external part counts
  • Auto-Tuning Skip
 
  • Adjusts skip entry based on VOUT
  • Rapid Frequency Foldback
 
  • Improved Light Load Efficiency
  • Constant Output Current Limiting
 
  • Meet LPS(Limited Power Source) requirements in PPS
  • SR Spike Reduction Circuitry (Adaptive Gate Drive)
 
  • Enables Lower Voltage Rated SR FETs
  • Improved Frequency Jittering
 
  • Softer EMI Signature
  • 350 KHz high frequency QR
 
  • Enable smaller magnetic designs
  • Internal 700 V Startup w X2 discharge
 
  • Improve standby power
Applications   End Products
  • USB PD
 
  • Phone, Tablet, & Notebook Chargers
  • Aftermarket USB PD Multi-Port Chargers
  • USB C Enabled Wall Sockets
Technical Documentation & Design Resources
Data Sheets (1) Evaluation Board Documents (3)
Package Drawings (1)  
Evaluation/Development Tool Information
Product Status Compliance Short Description Action
NCP1345PD65WGEVB Active
Pb-free
NCP1345 USB-PD 65W Evaluation Board.
Availability & Samples
Specifications
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
NCP1345Q00D1R2G Active 
Pb-free
Halide free
NCP1345, AGD-2nd Valley, Frequency Foldback-disabled SOIC-9 NB 751BP 1 260 Tape and Reel 2500 $0.6
NCP1345Q01D1R2G Active 
Pb-free
Halide free
NCP1345, AGD-3rd Valley, Frequency Foldback-350 mV SOIC-9 NB 751BP 1 260 Tape and Reel 2500 $0.6
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory

Product
Description
Pricing ($/Unit)
Compliance
Status
Topology
Control Mode
fsw Typ (kHz)
Stand-by Mode
UVLO (V)
Short Circuit Protection
Latch
Soft Start
VCC Max (V)
Drive Cap. (mA)
Package Type
NCP1345Q00D1R2G  
 $0.6 
Pb
H
 Active   
Flyback
Current Mode
Variable
Yes
9
Yes
No
Yes
38
500 / 800
SOIC-9 NB
NCP1345Q01D1R2G  
 $0.6 
Pb
H
 Active   
Flyback
Current Mode
Variable
Yes
9
Yes
No
Yes
38
500 / 800
SOIC-9 NB
Case Outlines
751BP   
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