Datasheet > ML4830CP

ML4830CP

更新时间： 2024-02-29 07:34:39

品牌	Logo	应用领域
MICRO-LINEAR		光电二极管电子控制器
页数	文件大小	规格书
15页	221K
描述
Electronic Ballast Controller

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数据手册

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ML4830CP 数据手册

March 1997

ML4830*

Electronic Ballast Controller

GENERAL DESCRIPTION

FEATURES

The ML4830 is a complete solution for a dimmable, high

power factor, high efficiency electronic ballast.

Contained in the ML4830 are controllers for “boost” type

power factor correction as well as for a dimming ballast.

■ Complete Power Factor Correction and Dimming

Ballast Control on one IC

■ Low Distortion, High Efficiency Continuous Boost,

Average Current sensing PFC section

The Power factor circuit uses the average current sensing

method with a gain modulator and over-voltage

protection. This system produces power factors of better

than 0.99 with low input current THD at > 95%

efficiency. Special care has been taken in the design of

the ML4830 to increase system noise immunity by using a

high amplitude oscillator, and a gain modulator. An over-

voltage protection comparator stops the PFC section in

the event of sudden load decrease.

■ Programmable Start Scenario for Rapid or Instant Start

Lamps

■ Selectable Variable Frequency dimming and starting

■ Programmable Restart for lamp out condition to

reduce ballast heating

■ Over-Temperature Shutdown replaces external heat

sensor for safety

The ballast section provides for programmable starting

scenarios with programmable preheat and lamp out-of-

socket interrupt times. The IC controls lamp output

through either frequency or Pulse Width control using

lamp current feedback.

■ PFC Over-Voltage comparator eliminates output

“runaway” due to load removal

■ Large oscillator amplitude and gain modulator

improves noise immunity

The ML4830 is designed using Micro Linear‘s Semi-

Standard tile array methodology. Customized versions of

this IC, optimized to specific ballast architectures can be

made available. Contact Micro Linear or an authorized

representative for more information.

*This Part Is End Of Life As Of August 1, 2000

BLOCK DIAGRAM

MODE

R(SET)

LAMP F.B.

OSCILLATOR

LFB OUT

R(T)/C(T)

OUTPUT

DRIVERS

R(X)/C(X)

OUT A

PRE-HEAT

AND INTERRUPT

TIMERS

PWM OR

FREQUENCY

MODULATOR

INTERRUPT

OUT B

OVP/INHIBIT

IA OUT

IA–

PFC OUT

POWER

FACTOR

CONTROLLER

IA+/I(LIM)

I(SINE)

VCC

UNDER-VOLTAGE

AND THERMAL

SHUTDOWN

EA OUT

EA–

REF

GND

12 3 4 5 6 7...15

中文翻译

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与ML4830CP相关器件

型号	品牌	获取价格	描述	数据表
ML4830CS	MICRO-LINEAR	获取价格	Electronic Ballast Controller
ML4831	MICRO-LINEAR	获取价格	Electronic Ballast Controller
ML4831CP	MICRO-LINEAR	获取价格	Electronic Ballast Controller
ML4832	MICRO-LINEAR	获取价格	Electronic Dimming Ballast Controller
ML4832CP	MICRO-LINEAR	获取价格	Electronic Dimming Ballast Controller
ML4832CS	MICRO-LINEAR	获取价格	Electronic Dimming Ballast Controller
ML4833	MICRO-LINEAR	获取价格	Electronic Dimming Ballast Controller
ML4833CP	MICRO-LINEAR	获取价格	Electronic Dimming Ballast Controller
ML4833CS	MICRO-LINEAR	获取价格	Electronic Dimming Ballast Controller
ML4835	MICRO-LINEAR	获取价格	Compact Fluorescent Electronic Dimming Ballast Controller

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