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UCC28730DR

更新时间： 2024-01-18 14:00:38
品牌 Logo 应用领域
德州仪器 - TI 监控开关光电二极管
页数 文件大小 规格书
44页 1859K
描述
Zero-Power Standby PSR Flyback Controller with CVCC and Wake-Up Monitoring

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UCC28730DR 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active包装说明：SOIC-7
Reach Compliance Code：compliantECCN代码：EAR99
Factory Lead Time：12 weeks风险等级：1.72
Samacsys Description：Zero Standby PSR Flyback Controller with CVCC and Wake-Up Monitoring模拟集成电路 - 其他类型：SWITCHING CONTROLLER
控制模式：CURRENT/VOLTAGE-MODE控制技术：RESONANT CONTROL
最大输入电压：35 V最小输入电压：9 V
标称输入电压：25 VJESD-30 代码：R-PDSO-G7
JESD-609代码：e4长度：4.9 mm
湿度敏感等级：1功能数量：1
端子数量：7最高工作温度：125 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装形状：RECTANGULAR
封装形式：SMALL OUTLINE座面最大高度：1.58 mm
标称供电电压 (Vsup)：25 V表面贴装：YES
切换器配置：SINGLE最大切换频率：90 kHz
温度等级：AUTOMOTIVE端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL宽度：3.91 mm
Base Number Matches：1

UCC28730DR 数据手册

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Sample &  
Buy  
Support &  
Community  
Product  
Folder  
Tools &  
Software  
Technical  
Documents  
UCC28730  
SLUSBL5 –FEBRUARY 2015  
UCC28730 Zero-Power Standby PSR Flyback Controller  
with CVCC and Wake-Up Monitoring  
1 Features  
3 Description  
The UCC28730 isolated-flyback power supply  
controller provides Constant-Voltage (CV) and  
Constant-Current (CC) output regulation without the  
use of an optical coupler, and wake-up signal  
detection to improve transient response to large load  
steps. A minimum switching frequency of 30 Hz  
facilitates achieving less than 5 mW of no-load  
power. This device processes information from the  
primary power switch and an auxiliary flyback winding  
for precise control of output voltage and current. The  
wake-up monitoring works with a secondary-side  
alarm device such as the UCC24650 to deliver rapid  
response to heavy load steps using minimal output  
capacitance.  
1
•
•
•
•
Enables Zero-Power (<5 mW) Standby  
Consumption  
Smart Wake-Up Detection Enables Smallest  
Output Capacitance  
Primary-Side Regulation (PSR) Eliminates Opto-  
coupler  
±5% Voltage Regulation and Current Regulation  
Across Line and Load  
•
•
700-V Start-up Switch  
83-kHz Maximum Switching Frequency Enables  
Low Stand-by Power Charger Designs  
•
Resonant-Ring Valley-Switching Operation for  
Highest Overall Efficiency  
An internal 700-V start-up switch, dynamically-  
controlled operating states and a tailored modulation  
profile support ultra-low stand-by power without  
sacrificing start-up time or output transient response.  
Control algorithms in the UCC28730 allow operating  
efficiencies to meet or exceed applicable standards.  
Discontinuous conduction mode (DCM) operation  
with valley-switching reduces switching losses.  
Modulation of the switching frequency and primary  
current peak amplitude (FM and AM) keeps the  
conversion efficiency high across the entire load and  
line ranges.  
•
•
•
Frequency-Dither to Ease EMI Compliance  
Clamped Gate-Drive Output for MOSFET  
Over-Voltage, Low-Line, and Over-Current  
Protection Functions  
•
•
Programmable Cable Compensation  
SOIC-7 Package  
2 Applications  
•
Adapters and Chargers for Smart Phones,  
Tablets, and Other Consumer Electronics  
Device Information(1)  
•
•
TV and Monitor Power Supplies  
PART NUMBER  
PACKAGE  
BODY SIZE (NOM)  
SMPS for Home Appliances and Industrial  
Automation  
UCC28730  
SOIC (7)  
4.90 mm x 3.90 mm  
(1) For all available packages, see the orderable addendum at  
the end of the data sheet.  
•
Standby and Auxiliary Power Supplies  
Simplified Schematic  
Zero-Power Input Consumption at No-Load  
VBULK  
VOUT  
IOUT  
NP  
NS  
VSEC  
CB1  
CB2  
UCC24650  
COUT  
5
3
WAKE VDD  
1
2
VAC  
ENS  
GND  
RPL  
DS  
5.1 V +/-5% Cout = 540 mF  
UCC28730  
DA  
VAUX  
NA  
1
VDD  
HV  
7
CVDD  
M1  
RS1  
Input  
Voltage  
No-load  
Input Power  
DRV  
CS  
6
5
RLC  
2
3
VS  
115 VRMS  
230 VRMS  
3.0 mW  
3.5 mW  
CBC  
GND  
4
RS2  
RCBC  
RCS  
2-A Load Step  
Switching Pulses  
1
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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