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UCC256403

更新时间： 2024-12-01 11:07:55
品牌 Logo 应用领域
德州仪器 - TI 控制器
页数 文件大小 规格书
78页 3809K
描述
具有超低功耗和超静音待机运行功能的 LLC 谐振控制器

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UCC256403 数据手册

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UCC256402, UCC256403, UCC256404  
SLUSD90D – MAY 2019 – REVISED NOVEMBER 2020  
UCC25640x LLC Resonant Controller  
with Ultra-Low Audible Noise and Standby Power  
1 Features  
3 Description  
•
Optimized low power mode and burst mode  
The UCC25640x is a fully featured LLC controller with  
algorithm  
integrated high-voltage gate driver. It has been  
designed to pair with a PFC controller to provide a  
complete power system using a minimum of external  
components. The resulting power system is designed  
to meet the most stringent requirements for standby  
power without the need for a separate standby power  
converter.  
– Burst mode with Soft-ON and Soft-OFF periods  
– Minimized audible noise at no load and standby  
– User option to disable burst mode  
– Opto-coupler low power operation  
– Efficiency performance exceeds DoE Level VI  
and EU CoC Tier-2 External Power Supply  
Standards  
Hybrid hysteretic control (HHC)  
– Best-in-class transient response  
– Fast exit from burst mode  
Robust adaptive dead-time control  
Integrated high-voltage gate driver with 0.6 A  
source and 1.2 A sink capability  
Robust capacitive region (ZCS) avoidance scheme  
Over temperature, output over voltage, input  
under voltage protection, three levels  
of over current protection  
UCC25640x provides a highly efficient burst mode  
with soft-on and soft-off periods to minimize audible  
noise at standby operation. The burst power level and  
hysteresis are programmable, simplifying the  
optimization of efficiency and burst mode operation.  
Burst mode can also be disabled through pin  
configuration. UCC25640x uses hybrid hysteretic  
control to provide best in class line and load transient  
response.  
•
•
•
•
•
UCC25640x includes a range of features designed to  
make LLC converter operation well controlled and  
protected. It can be used with UCC28056 or  
UCC28064A PFC controllers, along with UCC24624  
synchronous rectifier controller to offer a complete  
power supply solution.  
•
•
Integrated high voltage startup function  
Active X-capacitor discharge function  
2 Applications  
Device Information  
•
•
•
•
•
•
•
•
•
SMPS power supply for TV  
Lighting  
AC-DC adapter  
PART NUMBER  
UCC256402  
PACKAGE  
BODY SIZE (NOM)  
9.9 mm x 3.9 mm  
9.9 mm x 3.9 mm  
9.9 mm x 3.9 mm  
SOIC  
UCC256403  
SOIC  
SOIC  
Power tools  
UCC256404  
Medical power supply  
Multi-functional printer  
Enterprise and cinema projector  
PC power supply  
Cr  
Lr  
Lm  
HO  
Vout  
HS  
VIn  
BLK  
VCC  
Gaming console power supply  
BW  
LO  
FB  
AC Line  
HV  
16  
HS  
1
HS  
HO  
HB  
AC Neutral  
RHV  
HO  
15  
14  
CBOOT  
VCC  
3
4
5
6
7
8
VCC  
UCC25640x  
LLC  
Controller  
BLK  
FB  
BLK  
FB  
RVCC  
GND  
12  
11  
10  
9
ISNS  
ISNS  
VCR  
VCR  
BW  
LO  
LO  
LL/SS  
BW  
CSS  
Simplified Schematic  
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. PRODUCTION DATA.  
 
 
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