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UCC25701
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UCC25701

  • Category:ACDC- and -DCDC-power supply
  • Product Name:Advanced voltage mode pulse width modulator
  • Manufacturers:TI
  • Production Batch Number:10+
  • Encapsulation:14PDIP, 14SOIC, 14TSSOP
  • Stock Status:There is stock
  • Stock Quantity:2500
  • Minimum order quantity: 1
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  • Product introduction

The pulse-width modulator UCC35701/UCC35702 family is used to isolate switching power supplies using primary-side control supplies. They can be used both in offline applications and in the design of DC/DC converters, such as in distributed power system architectures, or as telecom power supplies.

These devices have low start-up current, high efficiency allowed on the off-field starting line, but there are enough output drivers in excess of 500kHz switching power MOSFETs.

Voltage feedforward compensation operates over a 5:1 input range and provides a fast and accurate response to input voltage changes over a 4:1 range. Accurate volt-second clamps and maximum duty cycle limits were also on display.

Fault protection provides pulse current limit for pulses and the ability to latch up programmable digits that occur repeatedly after a fault.

characteristic
 
  • 700kHz operation
  • Integrated oscillator/voltage feed-forward compensation
  • Precise duty cycle limits
  • Accurate volt-second clamping
  • Optocoupler interface
  • Count shutdown failures
  • Fault lock off or automatic shutdown
  • Soft-stop synchronous rectification optimization
  • 1A peak gate drive output
  • 130μA start-up current
  • 750μA operating current
parameter
  UCC25701  
topology Boost, reverse, forward  
Control method Voltage mode  
Duty cycle (max.) (%) 99  
Frequency (max) (khertz) 700  
On/Off of Undervoltage Lockout Threshold (5) 13 / 9  
Pins/Packets 14PDIP,14SOIC,14TSSOP  
(#) Regulated output One  
Operating temperature range(°C) -40 to 85  

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