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5962-9958302Q2A

更新时间： 2024-01-16 20:24:55
品牌 Logo 应用领域
德州仪器 - TI 稳压器开关式稳压器或控制器电源电路开关式控制器
页数 文件大小 规格书
32页 705K
描述
PULSE-WIDTH-MODULATION CONTROL CIRCUITS

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5962-9958302Q2A 技术参数

生命周期：Active零件包装代码：QLCC
包装说明：QCCN,针数：20
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.33
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：40 V
最小输入电压：3.6 V标称输入电压：6 V
JESD-30 代码：S-CQCC-N20JESD-609代码：e0
长度：8.89 mm功能数量：1
端子数量：20最高工作温度：125 °C
最低工作温度：-55 °C最大输出电流：0.1 A
封装主体材料：CERAMIC, METAL-SEALED COFIRED封装代码：QCCN
封装形状：SQUARE封装形式：CHIP CARRIER
峰值回流温度（摄氏度）：NOT APPLICABLE认证状态：Qualified
筛选级别：MIL-PRF-38535 Class Q座面最大高度：2.03 mm
表面贴装：YES切换器配置：SINGLE
最大切换频率：500 kHz温度等级：MILITARY
端子面层：TIN LEAD端子形式：NO LEAD
端子节距：1.27 mm端子位置：QUAD
处于峰值回流温度下的最长时间：NOT APPLICABLE宽度：8.89 mm

5962-9958302Q2A 数据手册

 浏览型号5962-9958302Q2A的Datasheet PDF文件第1页浏览型号5962-9958302Q2A的Datasheet PDF文件第2页浏览型号5962-9958302Q2A的Datasheet PDF文件第4页浏览型号5962-9958302Q2A的Datasheet PDF文件第5页浏览型号5962-9958302Q2A的Datasheet PDF文件第6页浏览型号5962-9958302Q2A的Datasheet PDF文件第7页 
TL5001, TL5001A  
PULSE-WIDTH-MODULATION CONTROL CIRCUITS  
SLVS084F – APRIL 1994 – REVISED JANUARY 2002  
detailed description  
voltage reference  
A 2.5-V regulator operating from V  
is used to power the internal circuitry of the TL5001 and TL5001A and as a  
CC  
reference for the error amplifier and SCP circuits. A resistive divider provides a 1-V reference for the error amplifier  
noninverting input which typically is within 2% of nominal over the operating temperature range.  
error amplifier  
The error amplifier compares a sample of the dc-to-dc converter output voltage to the 1-V reference and generates  
an error signal for the PWM comparator. The dc-to-dc converter output voltage is set by selecting the error-amplifier  
gain (see Figure 1), using the following expression:  
V
= (1 + R1/R2) (1 V)  
O
TL5001/A  
3
4
COMP  
FB  
Compensation  
Network  
R1  
V
I(FB)  
–
To PWM  
Comparator  
R2  
+
V
ref  
= 1 V  
8
GND  
Figure 1. Error-Amplifier Gain Setting  
The error-amplifier output is brought out as COMP for use in compensating the dc-to-dc converter control loop for  
stability. Because the amplifier can only source 45 µA, the total dc load resistance should be 100 kΩ or more.  
oscillator/PWM  
The oscillator frequency (f ) can be set between 20 kHz and 500 kHz by connecting a resistor between RT and  
osc  
GND. Acceptable resistor values range from 15 kΩ to 250 kΩ. The oscillator frequency can be determined by using  
the graph shown in Figure 5.  
The oscillator output is a triangular wave with a minimum value of approximately 0.7 V and a maximum value of  
approximately 1.3 V. The PWM comparator compares the error-amplifier output voltage and the DTC input voltage  
to the triangular wave and turns the output transistor off whenever the triangular wave is greater than the lesser of  
the two inputs.  
dead-time control (DTC)  
DTC provides a means of limiting the output-switch duty cycle to a value less than 100%, which is critical for boost  
and flyback converters. A current source generates a reference current (I ) at DTC that is nominally equal to the  
DT  
current at the oscillator timing terminal, RT. Connecting a resistor between DTC and GND generates a dead-time  
reference voltage (V ), which the PWM/DTC comparator compares to the oscillator triangle wave as described  
DT  
in the previous section. Nominally, the maximum duty cycle is 0% when V is 0.7 V or less and 100% when V  
DT  
DT  
is 1.3 V or greater. Because the triangle wave amplitude is a function of frequency and the source impedance of  
RT is relatively high (1250 Ω), choosing R for a specific maximum duty cycle, D, is accomplished using the  
DT  
following equation and the voltage limits for the frequency in question as found in Figure 11 (V max and V min  
osc  
osc  
are the maximum and minimum oscillator levels):  
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...32

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