Datasheet > HV9904P

HV9904P

更新时间： 2024-09-27 22:16:27

品牌	Logo	应用领域
超科 - SUPERTEX		转换器控制器
页数	文件大小	规格书
5页	100K
描述
HV9904 Multi Converter Controller

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中文翻译

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HV9904P 数据手册

HV9904

Preliminary Engineering Specification

HV9904 Multi Converter Controller

Features

General Description

ꢀ Eliminates High Voltage Input Electrolytic Capacitor

ꢀ Smallest and Most Reliable Off-Line Solution

ꢀ Constant Current or Constant Voltage Mode Control

ꢀ Can be Operated Directly from Rectified AC Mains

ꢀ 10V to 400V Input Range Internal Regulator

ꢀ 1.5mA Operating Supply Current

The Supertex HV9904 is a second order PWM controller designed

to provide a constant average current output or a constant average

voltage output from an input of 10V to 400V DC or directly from

rectified AC mains up to 280V. The second order topology is

capable of extremely high dynamic control range, allowing

operation directly from rectified AC mains without the need for

bulky and expensive high voltage input electrolytic capacitor.

ꢀ PLL Based Loop Control with Soft Start

ꢀ On-Time Varies Inversely with Input Voltage

ꢀ Frequency Varies with Load

The PWM control utilizes feed forward circuitry to compensate for

large variations in input voltage (i.e. rectified AC) and a novel

integrator lock loop PLL scheme to regulate a differentially sensed

feedback node where the signal may be discontinuous. This

feedback node could be a current sense resistor or divider from

regulated output voltage. For a constant load the switching

frequency will be nearly constant with a dither of a few kHz helping

to meet FCC conducted emissions requirements.

ꢀ 2.5V Differential Sense

ꢀ Recommended for <10W Applications

Applications

ꢀ Universal Input Voltage LED driver

ꢀ Constant Current Source

ꢀ Battery Charger

A high input voltage linear regulator provides a stable Vdd supply

for the internal circuitry and gate drive to the external MOSFET.

Under voltage lockout provides a power on reset and protection for

the MOSFET

Ordering Information

Package Options

8 Pin Plastic DIP

HV9904P

8 Pin SOIC

HV9904LG

Dice

HV9904X

Typical Application Circuit

Universal Input Constant Average Currrent LED Lamp Power Supply

1N4007

D1 D2

220uH

10VDC to 400VDC

MURS120T3 MURS120T3

VAC to 265V

D4 D3

0.01uF

0.1uF

MURS120T3

1 to 8

LEDs

10mA

1mH

0.1uF

400V

VN2460N8

+Vin

Vdd

GATE

IRFBC30AS

HV9904

250

AGND

PGND

1uF

Prepare by Telecom Group

Rev. D

3/29/2002

Supertex, Inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 TEL: (408) 744-0100 FAX: (408) 222-4895 www.supertex.com

12 3 4 5

中文翻译

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与HV9904P相关器件

型号	品牌	获取价格	描述	数据表
HV9904X	SUPERTEX	获取价格	HV9904 Multi Converter Controller
HV9906	SUPERTEX	获取价格	Simple Off-Line/PFC & >9V DC/DC Switcher
HV9906_04	SUPERTEX	获取价格	Simple Off-Line/PFC & >9V DC/DC Switcher
HV9906DB2	SUPERTEX	获取价格	Off-Line Current Source Controller
HV9906DB3	SUPERTEX	获取价格	Off-Line PFC Current Source Controller
HV9906DB4	SUPERTEX	获取价格	Off-Line Current Source Controller
HV9906LG	SUPERTEX	获取价格	Simple Off-Line/PFC & >9V DC/DC Switcher
HV9906P	SUPERTEX	获取价格	Simple Off-Line/PFC & >9V DC/DC Switcher
HV9906X	SUPERTEX	获取价格	Simple Off-Line/PFC & >9V DC/DC Switcher
HV9910	SUPERTEX	获取价格	Universal High Brightness LED Driver

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