Datasheet > HV461FG-GM931

HV461FG-GM931

更新时间： 2024-02-10 13:17:23

品牌	Logo	应用领域
超科 - SUPERTEX		电信电信集成电路
页数	文件大小	规格书
14页	881K
描述
Telephone Ringer Circuit

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技术参数
数据手册

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HV461FG-GM931 技术参数

生命周期：	Obsolete	包装说明：	,
Reach Compliance Code：	unknown	HTS代码：	8542.39.00.01
风险等级：	5.82	电信集成电路类型：	TELEPHONE RINGER CIRCUIT
Base Number Matches：	1

HV461FG-GM931 数据手册

Supertex inc.

HV461

Ring Generator Controller IC

Features

General Description

► 3.3V operation, logic inputs 3.3V & 5.0V compatible

► Digital control of ring frequency, amplitude, and offset

► Control via 8-bit bus or via individual inputs

The HV461FG is a highly integrated ring generator controller

IC, designed to work with a patented four-quadrant inverter

topology, with synchronous rectiﬁers on the secondary side to

achieve higher efﬁciencies. The inverter delivers the desired

ring voltage from a standard -48V Telecom power supply.

► 8 built-in ring frequencies: 12, 16²/₃, 20, 25, 33¹/₃, 40,

50, 60Hz

► External ring frequency input

TheHV461consistsofasinewavesynthesizerthatcanprovide

eight different ring frequencies for universal applications. Any

other frequency in the 12 to 63Hz range can be obtained by

applying an external logic signal to the IC. A transparent latch

permits control of the ringer output individually or through the

8-bit bus. The output amplitude and DC offset can be digitally

controlled providing high ﬂexibility to the designers. The

► Low distortion sine wave synthesizer

► AC-only, AC+DC, or DC-only ringer output

► Adjustable over-current protection

► Internal precision voltage references

► Power-on reset and undervoltage lockout for hotswap

capability

► Syncoutputwithadjustableleadtimeforsynchronizing patented inverter topology using the HV461 controller IC is

ringing relays

capable of achieving higher efﬁciencies, typically over 80%,

and drive up to a 40 REN load.

► Fault output for problem detection

► Open or closed loop operation

► Efﬁcient 4-quadrant operation

► Zero-cross turn-on with zero-cross turn-off option

The controller allows ring generators to provide a ﬂoating

94VAC (rms) waveform that can be referenced to either the

-48V or any other offset level by using the programmable

offset pins of the IC. Output offset may be achieved by directly

generating the offset within the power stage, or by ﬂoating the

output stage on a DC source, or both.

Applications

► PBX

► DLC

The HV461 also has an internal boost converter that can be

used to provide the gate drive voltages for the two MOSFETS

on the primary side and the two secondary rectiﬁers on the

secondary side.

► Key Systems

► Remote Terminal

► Wireless Loop Systems

Typical Application Circuit

-48V

Current Sense

Xtal

VDD

+3.3V

I/O

Gate Drive

Out

-48V

HV461

94VAC

(rms)

-48V

Doc.# DSFP - HV461

C071913

Supertex inc.

www.supertex.com

12 3 4 5 6 7...14

中文翻译

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