Datasheet > UCC28730_15

UCC28730_15

更新时间： 2024-11-24 01:08:15

品牌	Logo	应用领域
德州仪器 - TI		监控
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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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.

•

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

V_BULK

V_OUT

I_OUT

N_P

N_S

V_SEC

C_B1

C_B2

UCC24650

C_OUT

WAKE VDD

V_AC

ENS

GND

R_PL

D_S

5.1 V +/-5% Cout = 540 mF

UCC28730

D_A

V_AUX

N_A

VDD

C_VDD

M₁

R_S1

Input

Voltage

No-load

Input Power

DRV

R_LC

115 VRMS

230 VRMS

3.0 mW

3.5 mW

CBC

GND

R_S2

R_CBC

R_CS

2-A Load Step

Switching Pulses

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.

12 3 4 5 6 7...44

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与UCC28730_15相关器件

型号	品牌	获取价格	描述	数据表
UCC28730D	TI	获取价格	Zero-Power Standby PSR Flyback Controller with CVCC and Wake-Up Monitoring
UCC28730DR	TI	获取价格	Zero-Power Standby PSR Flyback Controller with CVCC and Wake-Up Monitoring
UCC28730-Q1	TI	获取价格	适用于汽车的零功耗待机 PSR 反激式控制器
UCC28730QDRQ1	TI	获取价格	适用于汽车的零功耗待机 PSR 反激式控制器 \| D \| 7 \| -40 to 125
UCC28740	TI	获取价格	Constant-Voltage Constant-Current Flyback Controller Using Opto-Coupled Feedback
UCC28740D	TI	获取价格	Constant-Voltage Constant-Current Flyback Controller Using Opto-Coupled Feedback
UCC28740DR	TI	获取价格	Constant-Voltage Constant-Current Flyback Controller Using Opto-Coupled Feedback
UCC28740-Q1	TI	获取价格	具有集成高压启动和光耦合器反馈功能的汽车类超低待机功耗反激式控制器
UCC28740QDRQ1	TI	获取价格	具有集成高压启动和光耦合器反馈功能的汽车类超低待机功耗反激式控制器 \| D \| 7 \| -
UCC28742	TI	获取价格	具有 1% 输出调节精度的高效反激控制器

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