Single Ended Active Clamp/Reset PWM

The UCC3580 family of PWM Controllers is designed to implement a variety of active clamp/reset and synchronous Rectifier switching converter topologies. While containing all the necessary functions for fixed frequency, high performance pulse width modulation, the additional feature of this design is the inclusion of an auxiliary Switch driver which complements the main power Switch and with a programmable deadtime or delay between each transition. The active clamp/reset technique allows operation of single ended converters beyond 50% duty cycle while reducing voltage stresses on the switches, and allows a greater flux swing for the power transformer. This approach also allows a reduction in switching losses by recovering energy stored in parasitic elements such as leakage inductance and Switch capacitance.
The Oscillator is programmed with two resistors and a capacitor to set switching frequency and maximum duty cycle. A separate synchronized ramp provides a voltage feedforward pulse width modulation and a programmed maximum volt-second limit. The generated Clock from the Oscillator contains both frequency and maximum duty cycle information.
The main Gate drive output (OUT1) is controlled by the pulse width Modulator The second output (OUT2) is intended to activate an auxiliary Switch during the off time of the main Switch except that between each transition there is deadtime where both switches are off, programmed by a single external resistor. This design offers two options for OUT2, normal and inverted. In the -1 and -2 versions, OUT2 is normal and CAN be used to drive PMOS FETs In the -3 and -4 versions, OUT2 is inverted and CAN be used to drive NMOS FETs In all versions, both the main and auxiliary switches are held off prior to startup and when the PWM command goes to zero duty cycle. During fault conditions, OUT1 is held off while OUT2 operates at maximum duty cycle with a guaranteed off time equal to the sum of the two deadtimes.
Undervoltage lockout monitors supply voltage (VDD), the precision reference (REF), input line voltage (LINE), and the shutdown Comparator (SHTDWN). If after any of these four have sensed a fault condition, recovery to full operation is initiated with a soft start. VDD thresholds, on and off, are 15V and 8.5V for the -2 and -4 versions, 9V and 8.5V for the -1 and -3 versions.
The UCC1580-x is specified for operation over the military temperature range of ?55C to 125C. The UCC2580-x is specified from ?40C to 85C. The UCC3580-x is specified from 0C to 70C. Package options include 16-pin surface mount and dual in-line.
By Texas Instruments
Part Manufacturer Description Datasheet Samples
UCC2580D-2 Texas Instruments Single Ended Active Clamp/Reset PWM 16-SOIC -40 to 85
UCC2580N-3 Texas Instruments Single Ended Active Clamp/Reset PWM 16-PDIP -40 to 85
UCC2580N-1 Texas Instruments Single Ended Active Clamp/Reset PWM 16-PDIP -40 to 85
UCC2580DTR-3 Texas Instruments Single Ended Active Clamp/Reset PWM 16-SOIC -40 to 85
UCC2580N-1G4 Texas Instruments Single Ended Active Clamp/Reset PWM 16-PDIP -40 to 85
UCC2580DTR-3G4 Texas Instruments Single Ended Active Clamp/Reset PWM 16-SOIC -40 to 85
UCC2580DTR-2G4 Texas Instruments 1.2A SWITCHING CONTROLLER, 430kHz SWITCHING FREQ-MAX, PDSO16, GREEN, PLASTIC, MS-012AC, SOIC-16
UCC2580D-4G4 Texas Instruments Single Ended Active Clamp/Reset PWM 16-SOIC -40 to 85
UCC2580DTR-2 Texas Instruments Single Ended Active Clamp/Reset PWM 16-SOIC -40 to 85
UCC2580D-4 Texas Instruments Single Ended Active Clamp/Reset PWM 16-SOIC -40 to 85
UCC2580-2 's PackagesUCC2580-2 's pdf datasheet
UCC2580D-2 SOIC
UCC2580D-2G4 SOIC
UCC2580DTR-2 SOIC
UCC2580DTR-2G4 SOIC
UCC2580N-2 PDIP
UCC2580N-2G4 PDIP




UCC2580-2 Pinout, Pinouts
UCC2580-2 pinout,Pin out
This is one package pinout of UCC2580-2,If you need more pinouts please download UCC2580-2's pdf datasheet.

UCC2580-2 Application circuits
UCC2580-2 circuits
This is one application circuit of UCC2580-2,If you need more circuits,please download UCC2580-2's pdf datasheet.


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