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CS51221: Enhanced Voltage Mode PWM Controller for Forward or Flyback

Datasheet: Enhanced Voltage Mode PWM Controller
Rev. 8 (172.0kB)
Product Overview
»View Reliability Data
»View Material Composition
» Product Change Notification
The CS51221 Enhanced Voltage Mode PWM Controller contains all of the features necessary for basic voltage mode operation. This PWM controller has been optimized for high frequency primary side control operation. In addition, this device includes such features as: Soft Start, accurate duty cycle limit control, less than 50uA startup current, over and under voltage protection and bidirectional synchronization. The CS51221 is available in a SOIC-16 and TSSOP-16 surface mount packages.
Features
 
  • 1MHz Frequency Capability
  • Fixed Frequency Voltage Mode Operation, with Feed Forward
  • Thermal Shutdown
  • Under Voltage Lock-out
  • Accurate Programmable Max Duty Cycle Limit
  • 1A Sink/Source Gate Drive
  • Programmable Pulse-by-Pulse Overcurrent Protection
  • Leading Edge Current Sense Blanking
  • 75ns Shutdown Propagation Delay
  • Programmable Soft Start
  • Undervoltage Protection
  • Overvoltage Protection with Programmable Hysteresis
  • Bi-directional Synchronization
  • 25ns GATE Rise and Fall Time (1nF load)
  • 3.3V 3% Reference Voltage Output
  • Pb-Free Package is Available
Applications
  • Hot Swap - DC-DC Conversion
Technical Documentation & Design Resources
Design Notes (2) Package Drawings (2)
Data Sheets (1)  
Availability & Samples
Specifications
Case Outlines
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
CS51221ED16G Obsolete 
AEC Qualified
PPAP Capable
Pb-free
Halide free
CS51221 SOIC-16 751B-05 1 260 Tube 48  
CS51221EDR16G Active
AEC Qualified
PPAP Capable
Pb-free
Halide free
CS51221 SOIC-16 751B-05 1 260 Tape and Reel 2500 $1.2
CS51221EDTB16G Obsolete 
AEC Qualified
PPAP Capable
Pb-free
Halide free
CS51221 TSSOP-16 948F-01 1 260 Tube 96  
CS51221EDTB16R2G Obsolete 
AEC Qualified
PPAP Capable
Pb-free
Halide free
CS51221 TSSOP-16 948F-01 1 260 Tape and Reel 2500  
Market Leadtime (weeks) : Contact Factory
PandS   (2020-09-14 00:00) : <100
Market Leadtime (weeks) : 4 to 8
Market Leadtime (weeks) : Contact Factory
PandS   (2020-09-14 00:00) : <100
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
CS51221EDR16G  
 $1.2 
Pb
A
H
P
 Active   
Forward
Voltage Mode
Up to 1000
No
Yes
No
Yes
Yes
15
1000
SOIC-16
Case Outlines
751B-05    948F-01   
Packages
CS51221: Enhanced Voltage Mode PWM Controller for Forward or Flyback
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