Datasheet > UPSR1103

UPSR1103

更新时间： 2024-11-19 01:14:27

品牌	Logo	应用领域
友顺 - UTC		开关
页数	文件大小	规格书
8页	201K
描述
HIGH PRECISION CC/CV PRIMARY SIDE SWITCHING REGULATOR

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UPSR1103 数据手册

UNISONIC TECHNOLOGIES CO., LTD

UPSR1103

Advance

CMOS IC

HIGH PRECISION CC/CV

PRIMARY SIDE SWITCHING

REGULATOR



DESCRIPTION

The UTC UPSR1103 is a primary control unit for 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.

SOP-8

The UTC UPSR1103 operates in primary-side sensing and

regulation. Opto-coupler and TL431 could be eliminated. It also

provides off-time modulation to linearly decrease PWM frequency

under light-load conditions so that low standby power can be

achieved.

The UTC UPSR1103 achieves high precision CV/CC regulation

and high power efficiency. It offers comprehensive protection

coverage with auto-recovery features including Cycle-by-cycle

current limiting, VDD over voltage protection, VDD clamp, OTP,

leading edge blanking, VDD under voltage lockout, etc.



FEATURES

* High voltage startup

* Driver MOSFET switch

* ±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

* Built-in leading edge blanking

* Built-in primary winding inductance

compensation

* Gate output maximum voltage clamped at 15V

* Cycle-by-cycle current limiting

* Over voltage protection

* Frequency hopping to reduce system EMI

* V_DDunder-voltage lockout



ORDERING INFORMATION

Ordering Number

Lead Free

Package

SOP-8

Packing

Tube

Halogen Free

UPSR1103G-S08-T

UPSR1103L-S08-T

www.unisonic.com.tw

1 of 8

QW-R502-961. a

12 3 4 5 6 7 8

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