UCC3750

更新时间： 2024-11-09 22:52:39

品牌	Logo	应用领域
德州仪器 - TI		控制器
页数	文件大小	规格书
11页	260K
描述
Source Ringer Controller

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中文翻译

获取价格

数据手册
替代型号

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UCC3750 数据手册

application

INFO

UCC2750

UCC3750

available

PRELIMINARY

Source Ringer Controller

DESCRIPTION

FEATURES

The UCC3750 Source Ringer Controller provides a complete control and

drive solution for a four quadrant flyback-based ring generator circuit. The

IC controls a primary side switch, which is modulated when power transfer

is taking place from input to output. It also controls two secondary

switches which act as synchronous rectifier switches during positive

power flow. These switches are pulse-width-modulated when the power is

being delivered back to the source.

• Provides Control for Flyback Based

Four Quadrant Amplifier Topology

• Onboard Sine Wave Reference with

Low THD

• Selectable Ringing Frequency for

Different Phone Systems (20Hz,

25Hz and 50Hz)

The UCC3750 has an onboard sine wave reference with programmable

frequencies of 20Hz, 25Hz and 50Hz. The reference is derived from a

high-frequency (32kHz) crystal connected externally. Two fre-

quency-select pins control an internal divider to give a sinusoidal output at

20Hz, 25Hz or 50Hz. The ring generator can also be used at other fre-

quencies by supplying externally generated sine-waves to the chip or by

clocking the crystal input at a fixed multiple of the desired frequency.

• Programmable Output Amplitude and

DC Offset

• DC Current Limiting for Short Circuit

Protection

• Secondary Side Voltage Mode

Control

Other features included in the UCC3750 are programmable DC current

limit (with buffer amplifier), a charge-pump circuit for gate drive voltage, in-

ternal 3V and 7.5V references, a triangular clock oscillator and a buffer

amplifier for adding programmable DC offset to the output voltage. The

UCC3750 also provides an uncommitted amplifier (AMP) for other signal

processing requirements.

• Operates from a Single 5V Supply

TYPICAL APPLICATION

V_OUT

–48V

V_IN

48V

V_OUT

GD2 GD3 ENBL REF

GD1

VCP

VS2

VS1

VDD

UCC3750

24 RT

23 CT

RGOOD

11 OUTDC

12 NEGDC

OUT2 15

13 AMPOUT

14 AMPIN

22 XTAL1

21 XTAL2

20 FS0

NEG2 18

OUT1 16

NEG1 17

SINFLT 10

19 FS1

SINREF

SWRLY

GND

C17

0.047µF

UDG-99073

SLUS172A - DECEMBER 1999

12 3 4 5 6 7...11

中文翻译

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UCC3750 替代型号

型号	品牌	替代类型	描述	数据表
UCC3752	TI	功能相似	Resonant Ring Generator Controller
UCC3751	TI	功能相似	Single Line Ring Generator Controller
UCC2750	TI	功能相似	Source Ringer Controller

与UCC3750相关器件

型号	品牌	获取价格	描述	数据表
UCC3750DW	TI	获取价格	Source Ringer Controller
UCC3750DWG4	TI	获取价格	Source Ringer Controller
UCC3750DWP	TI	获取价格	SPECIALTY TELECOM CIRCUIT, PDSO28, SOIC-28
UCC3750DWTR	TI	获取价格	Source Ringer Controller
UCC3750DWTRG4	TI	获取价格	Source Ringer Controller
UCC3750N	TI	获取价格	Source Ringer Controller
UCC3750NG4	TI	获取价格	Source Ringer Controller
UCC3750Q	TI	获取价格	SPECIALTY TELECOM CIRCUIT, PQCC28
UCC3751	TI	获取价格	Single Line Ring Generator Controller
UCC3751D	TI	获取价格	Single Line Ring Generator Controller 16-SOIC 0 to 70

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