The UTC USR3654A is a primary control switch mode charger and adapter applications. The controlled variable is transferred by an auxiliary winding from the secondary to the primary side. The device integrates PWM controller to enhance the performance of discontinuous conduction mode (DCM) flyback converters. The UTC USR3654A operates in primary-side sensing .
including Cycle-by-cycle current limiting, VDD over voltage protection, VDD clamp, OTP, leading edge blanking, VDD under voltage lockout, etc.
DIP-7A DIP-8
FEATURES
* High Voltage startup circuit
* Built-in 650V Power MOSFET
* ±5% constant voltage regulation at universal AC input
* High precision constant current regulation at universal AC input
* Primary side control without TL431 and opto-coupler
* Programmable CV and CC regulation
* Programmable cable compensation in CV mode
* Flyback topology in DCM operation
* Frequency hopping to reduce system EMI
* Built-in leading edge blanking
* .
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | USR3651 |
UTC |
HIGH PRECISION CC/CV PRIMARY-SIDE PWM POWER SWITCH | |
2 | USR3651S |
Unisonic Technologies |
HIGH PRECISION CC/CV PRIMARY-SIDE PWM POWER SWITCH | |
3 | USR30 |
Microsemi Corporation |
RECTIFIERS ASSEMBLIES | |
4 | USR35 |
Microsemi Corporation |
RECTIFIERS ASSEMBLIES | |
5 | USR100A |
Microsemi Corporation |
RECTIFIERS ASSEMBLIES | |
6 | USR100PP12A |
Origin |
Custom snubber module | |
7 | USR100QP16 |
Origin |
Custom snubber module | |
8 | USR1021 |
UNISONIC TECHNOLOGIES |
3A SYNCHRONOUS BUCK REGULATOR | |
9 | USR1051 |
UNISONIC TECHNOLOGIES |
3A SYNCHRONOUS BUCK REGULATOR | |
10 | USR1101 |
UNISONIC TECHNOLOGIES |
5V 12V SYNCHRONOUS BUCK PWM DC-DC CONTROLLER | |
11 | USR1171 |
Microsemi Corporation |
11.7 VOLT ULTRA STABLE TEMPERATURE COMPENSATED ZENER REFERENCE DIODES | |
12 | USR1172 |
Microsemi Corporation |
11.7 VOLT ULTRA STABLE TEMPERATURE COMPENSATED ZENER REFERENCE DIODES |