Datasheet > UCC2750DWTR

UCC2750DWTR

更新时间： 2024-02-12 02:35:10

品牌	Logo	应用领域
德州仪器 - TI		电信信息通信管理光电二极管电信集成电路
页数	文件大小	规格书
16页	996K
描述
SPECIALTY TELECOM CIRCUIT, PDSO28, GREEN, PLASTIC, SOIC-28

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技术参数
数据手册

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UCC2750DWTR 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	SOIC
包装说明：	SOP,	针数：	28
Reach Compliance Code：	unknown	HTS代码：	8542.39.00.01
风险等级：	5.11	JESD-30 代码：	R-PDSO-G28
长度：	17.9 mm	功能数量：	1
端子数量：	28	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	峰值回流温度（摄氏度）：	NOT SPECIFIED
认证状态：	Not Qualified	座面最大高度：	2.65 mm
标称供电电压：	5 V	表面贴装：	YES
技术：	BICMOS	电信集成电路类型：	TELECOM CIRCUIT
温度等级：	INDUSTRIAL	端子形式：	GULL WING
端子节距：	1.27 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	7.5 mm
Base Number Matches：	1

UCC2750DWTR 数据手册

UCC2750

UCC3750

APPLICATION INFORMATION (cont.)

When the reference signal goes from positive to nega- starts increasing towards zero, the direction of power

tive, a transition is made from mode 2 to mode 3. In transfer is again reversed and Q2 is PWMed in mode 4.

mode 3, the converter once again acts as a DC-DC

It should be noted that in modes 2 and 3 when the refer-

flyback converter (with negative output). Similar to mode

ence is decreasing, the phase of the feedback path is in-

1, Q1 is controlled by the PWM output, however, the rec-

verted compared to the other two modes. Traditional

tifying path is now through Q3/DR3 as the output polarity

PWM methods will result in instability due to this charac-

is reversed. At the mode boundaries, there could be

teristic. The UCC3750 separates the error signal magni-

some distortion which won’t affect the THD too much as

tude and polarity and determines the correct PWM signal

it is near zero crossings. Finally, as the reference signal

based on a separate mode determination circuit.

UDG-96172-1

UDG-96173

Figure 2. Operating modes.

Figure 3. Circuit waveforms.

UDG-96162-1

UDG-96163

Figure 4a. Mode 1: Forward power transfer, positive

output.

Figure 4b. Mode 2: Reverse power transfer, positive

output.

UDG-96164-1

UDG-96165-1

Figure 4c. Mode 3: Forward power transfer, negative

output.

Figure 4d. Mode 4: Reverse power transfer, negative

output.

1...4 5 678 9 10...16

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