Datasheet > OB2532

OB2532

更新时间： 2024-09-14 01:21:27

品牌	Logo	应用领域
其他 - ETC		/
页数	文件大小	规格书
10页	404K
描述
High Precision CC/CV Primary-Side PWM Controller

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OB2532 数据手册

OB2532

High Precision CC/CV Primary-Side PWM Controller

Product Specification

GENERAL DESCRIPTION

FEATURES

OB2532 is a high performance offline PWM

controller for low power AC/DC charger and

adapter applications. It operates in primary-side

±5% Constant Voltage Regulation at

Universal AC input

High Precision Constant Current Regulation at

Universal AC input

Primary-side Sensing and Regulation Without

TL431 and Opto-coupler

sensing

and

regulation.

Consequently,

opto-coupler and TL431 could be eliminated.

Proprietary Constant Voltage (CV) and Constant

Current (CC) control is integrated as shown in the

figure below.

Programmable CV and CC Regulation

Adjustable Constant Current and Output

Power Setting

In CC control, the current and output power setting

can be adjusted externally by the sense resistor

Rs at CS pin. In CV control, multi-mode operations

are utilized to achieve high performance and high

efficiency. In addition, good load regulation is

achieved by the built-in cable drop compensation.

Device operates in PFM in CC mode as well at

large load condition and it operates in PWM with

frequency reduction at light/medium load.

OB2532 offers power on soft start control and

protection coverage with auto-recovery features

including Cycle-by-Cycle current limiting, VDD

OVP, VDD clamp and UVLO. Excellent EMI

performance is achieved with On-Bright

proprietary frequency shuffling technique.

High precision constant voltage (CV) and constant

current (CC) can be achieved by OB2532.

Built-in Secondary Constant Current Control

with Primary Side Feedback

Built-in Adaptive Current Peak Regulation

Built-in Primary winding inductance

compensation

Programmable Cable drop Compensation

Power on Soft-start

Built-in Leading Edge Blanking (LEB)

Cycle-by-Cycle Current Limiting

VDD Under Voltage Lockout with Hysteresis

(UVLO)

VDD OVP

VDD Clamp

APPLICATIONS

Low Power AC/DC offline SMPS for

Cell Phone Charger

Digital Cameras Charger

Small Power Adapter

Auxiliary Power for PC, TV etc.

Linear Regulator/RCC Replacement

OB2532 is offered in SOT23-6 package.

Fig.1. Typical CC/CV Curve

TYPICAL APPLICATION

©On-Bright Electronics

Confidential

Datasheet

OB_DOC_DS_2532A0

- 1 -

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