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UCC28910_15 PDF预览

UCC28910_15

更新时间: 2024-11-11 01:00:31
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德州仪器 - TI /
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53页 1338K
描述
High-Voltage Flyback Switcher with Primary-Side Regulation and Output Current Control

UCC28910_15 数据手册

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UCC28910  
UCC28911  
SLUS769C JULY 2013REVISED MARCH 2015  
UCC28910, UCC28911 High-Voltage Flyback Switcher  
with Primary-Side Regulation and Output Current Control  
1 Features  
3 Description  
The UCC28910 and UCC28911 are high-voltage  
1
Constant-Voltage (CV) and Constant-Current (CC)  
Output Regulation Without Optical-Coupler  
flyback switchers that provide output voltage and  
current regulation without the use of an optical  
coupler. Both devices incorporate a 700-V power FET  
and a controller that process operating information  
from the flyback auxiliary winding and power FET to  
provide a precise output voltage and current control.  
The integrated high-voltage current source for startup  
that is switched off during device operation, and the  
controller current consumption is dynamically  
adjusted with load. Both enable the very low stand-by  
power consumption.  
±5% Output Voltage Regulation Accuracy  
±5% Output Current Regulation With AC Line and  
Primary Inductance Tolerance Compensation  
700-V Start-Up and Smart Power Management  
Enables <30-mW Standby Power  
115-kHz Maximum Switching Frequency Design  
for High-Power Density  
Valley Switching and Frequency Dithering to Ease  
EMI Compliance  
Control algorithms in the UCC28910 and UCC28911,  
combining switching frequency and peak primary  
current modulation, allow operating efficiencies to  
meet or exceed applicable standards. Discontinuous  
conduction mode (DCM) with valley switching is used  
to reduce switching losses. Built-in protection features  
help to keep secondary and primary component  
stress levels in check across the operating range.  
The frequency jitter helps to reduce EMI filter cost.  
Thermal Shut Down  
Low Line and Output Over-Voltage Protection  
2 Applications  
Home and Building Automation  
Power Metering Bias  
Bias Power for Smoke Alarm, Fire Alarm and  
Thermostat  
Device Information  
Wall Adapters, Chargers for Mobile Phones  
Smart plug, IoT, MCU and WiFi Power  
Aux power for TV, Server, White Goods  
LED Lighting  
PART NUMBER  
UCC28910  
PACKAGE  
SOIC-7 (7)  
SOIC-7 (7)  
BODY SIZE (NOM)  
5.00 mm x 6.20 mm  
5.00 mm x 6.20 mm  
UCC28911  
4 Simplified Schematic  
Typical Target Output V-I Characteristic  
5
4
3
2
1
UCC2891x  
DRAIN  
8
±5%  
1
2
3
4
GND  
GND  
GND  
IPK  
VDD  
VS  
6
5
USB Specs. 1.1  
Typical Application  
0.25 0.5 0.75  
1
1.25 1.5  
Output Current (A)  
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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