Datasheet > HV9904

HV9904

更新时间： 2024-01-31 04:48:20

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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数据手册

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HV9904 技术参数

生命周期：	Obsolete	零件包装代码：	DIE
包装说明：	DIE,	Reach Compliance Code：	unknown
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.84	其他特性：	CAN ALSO BE CONFIGURED IN CONSTANT CURRENT MODE
模拟集成电路 - 其他类型：	SWITCHING CONTROLLER	控制模式：	VOLTAGE-MODE
控制技术：	PULSE WIDTH MODULATION	最大输入电压：	400 V
最小输入电压：	12 V	标称输入电压：	10 V
JESD-30 代码：	X-XUUC-N	功能数量：	1
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	UNSPECIFIED	封装代码：	DIE
封装形状：	UNSPECIFIED	封装形式：	UNCASED CHIP
认证状态：	Not Qualified	表面贴装：	YES
切换器配置：	SINGLE	温度等级：	INDUSTRIAL
端子形式：	NO LEAD	端子位置：	UPPER
Base Number Matches：	1

HV9904 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

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