UCC35701PW ,Advanced Voltage Mode Pulse Width ModulatorMAXIMUM RATINGSSupply voltage (Supply current limited to 20mA) ........ 15VT =T UVLO Package Part N ..
UCC35701PWG4 , Advanced Voltage Mode Pulse Width Modulator
UCC35702 ,Advanced Voltage Mode Pulse Width ModulatorELECTRICAL CHARACTERISTICS:Unless otherwise specified, V = 11V, RT = 60.4k, C = 330pF, C =C =DD T R ..
UCC35702D ,Advanced Voltage Mode Pulse Width ModulatorMAXIMUM RATINGSSupply voltage (Supply current limited to 20mA) ........ 15VT =T UVLO Package Part N ..
UCC35702N ,Advanced Voltage Mode Pulse Width ModulatorELECTRICAL CHARACTERISTICS:Unless otherwise specified, V = 11V, RT = 60.4k, C = 330pF, C =C =DD T R ..
UCC35702PW ,Advanced Voltage Mode Pulse Width ModulatorMAXIMUM RATINGSSupply voltage (Supply current limited to 20mA) ........ 15VT =T UVLO Package Part N ..
UPA2003GR-T1 ,Silicon transistor arrayFEATURES
0 Transient Protected Outputs
0 High DC Current Gain ‘
High Output Drive Current
..
UPA2003GR-T2 ,Silicon transistor arrayTRANSISTOR ARRAY-
pPA2001 C41PAZOOZC,/1PA2003C,/1PAZOO4C
NPN SILICON EPITAXIAL DARLINGTON TRANS ..
UPA2003GR-T2 ,Silicon transistor arrayTRANSISTOR ARRAY-
pPA2001 C41PAZOOZC,/1PA2003C,/1PAZOO4C
NPN SILICON EPITAXIAL DARLINGTON TRANS ..
UPA2004 ,Silicon transistor arrayFEATURES
0 Transient Protected Outputs
0 High DC Current Gain ‘
High Output Drive Current
..
UPA2004C ,Silicon transistor arrayTRANSISTOR ARRAY-
pPA2001 C41PAZOOZC,/1PA2003C,/1PAZOO4C
NPN SILICON EPITAXIAL DARLINGTON TRANS ..
UPA2004C. ,Silicon transistor arrayFEATURES
0 Transient Protected Outputs
0 High DC Current Gain ‘
High Output Drive Current
..
UCC35701-UCC35701D-UCC35701N-UCC35701PW
Advanced Voltage Mode Pulse Width Modulator
UCC15701/2
UCC25701/2
UCC35701/2Advanced Voltage Mode Pulse Width Modulator
DESCRIPTIONThe UCC35701/UCC35702 familyof pulse width modulatorsis intendedfor
isolated switching power supplies using primary side control. They can be
used for both off-line applications and DC/DC converter designs suchasin distributed power system architectureorasa telecom power source.
The devices feature low startup current, allowing for efficient off-line start-
ing, yet have sufficient output driveto switch power MOSFETsin excessof
500kHz.
Voltage feed forward compensationis operational overa 5:1 input range
and provides fast and accurate responseto input voltage changes overa
4:1 range. An accurate volt-second clamp and maximum duty cycle limit
are also featured.
Fault protectionis providedby pulseby pulse current limitingas wellas the
abilityto latch off aftera programmable numberof repetitive faults has oc-
curred.
Two UVLO options are offered. UCC35701 family has turn-on and turn-off
thresholdsof 13V/9V and UCC35702 family has thresholdsof 9.6V/8.8V.
The UCC35701/2 and the UCC25701/2 are offeredin the14 pin SOIC (D), pin PDIP (N)orin 14 pin TSSOP (PW) packages. The UCC15701/2is
offeredin the14 pin CDIP (J) package.
TYPICAL APPLICATION DIAGRAM
FEATURES700kHz Operation
Integrated Oscillator/ Voltage Feed
Forward Compensation
Accurate Duty Cycle Limit
Accurate Volt-second Clamp
Optocoupler Interface
Fault Counting Shutdown
Fault Latchoffor Automatic Shutdown
Soft Stop Optimizedfor Synchronous
Rectification Peak Gate Drive Output
130�A Start-up Current
750�A Operating Current
