Datasheet > HFC0300

HFC0300

更新时间： 2024-01-11 19:41:47

品牌	Logo	应用领域
芯源 - MPS		控制器
页数	文件大小	规格书
21页	442K
描述
Variable Off Time Controller

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HFC0300 数据手册

HFC0300

Variable Off Time Controller

The Future of Analog IC Technology

FEATURES

DESCRIPTION

HFC0300 is a variable off-time controller that



Variable Off-Time, Current Mode Control

Universal Main Supply Operation (85VAC to

265VAC)

uses

fixed-peak–current technique to

decrease its frequency as the load lightens. As

a result, it offers excellent efficiency at light-load

while optimizing the efficiency under other load

conditions.



Frequency Foldback as Load Lightens

Peak-Current Compression to Reduce

Transformer Noise



Active-Burst Mode for Low Standby Power

Consumption

When the frequency decreases to threshold,

the peak current decreases with the decreasing

load to prevent mechanical resonance in the

transformer. The controller enters burst mode

when the output power falls below a given level.



Internal High-Voltage Current Source

Internal 200ns Leading Edge Blanking

Thermal Shutdown (Auto Restart with

Hysteresis)

The HFC0300 features various protections such

as thermal shutdown, V_CCunder-voltage lockout,

overload protection, short-circuit protection, and

over-voltage protection.



VCC Under-Voltage Lockout with Hysteresis

Over-Voltage Protection on VCC Pin

Timer-Based Overload Protection

Short-Circuit Protection

Natural Spectrum Shaping for Improved

EMI Performance

The HFC0300 is available in SOIC-7 package.

APPLICATIONS



Battery Charger for Portable Electronics

Standby Power Supply

Switched-Mode Power Supplies

For MPS green status, please visit MPS website under Quality Assurance.

“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of

Monolithic Power Systems, Inc.

HFC0300 Rev. 1.0

9/23/2011

www.MonolithicPower.com

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

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