Datasheet > 电源电路 > 开关式稳压器或控制器> 5962-8768102V2A

5962-8768102V2A

更新时间： 2024-02-15 13:36:54

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
15页	302K
描述
High Speed PWM Controller

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5962-8768102V2A 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：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5
其他特性：	CONFIGURABLE CURRENT MODE OPERATION	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：	20 V	最小输入电压：	8.8 V
标称输入电压：	12 V	JESD-30 代码：	S-CQCC-N20
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：	2.2 A
最大输出电压：	5.15 V	最小输出电压：	5.05 V
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 SPECIFIED	认证状态：	Qualified
筛选级别：	MIL-PRF-38535 Class V	座面最大高度：	2.03 mm
最大供电电流 (Isup)：	36 mA	标称供电电压 (Vsup)：	12 V
表面贴装：	YES	切换器配置：	PUSH-PULL
最大切换频率：	1000 kHz	技术：	BICMOS
温度等级：	MILITARY	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 SPECIFIED	宽度：	8.89 mm
Base Number Matches：	1

5962-8768102V2A 数据手册

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SLUS334C − AUGUST 1995 − REVISED AUGUST 2004

LEADING EDGE BLANKING

The UC3823A, UC2823B, UC3825A, and UC3825B perform fixed frequency pulse width modulation control. The

UC3823A, and UC3823B outputs operate together at the switching frequency and can vary from zero to some value less

than 100%. The UC3825A and UC3825B outputs are alternately controlled. During every other cycle, one output is off.

Each output then switches at one-half the oscillator frequency, varying in duty cycle from 0 to less than 50%.

To limit maximum duty cycle, the internal clock pulse blanks both outputs low during the discharge time of the oscillator.

On the falling edge of the clock, the appropriate output(s) is driven high. The end of the pulse is controlled by the PWM

comparator, current limit comparator, or the overcurrent comparator.

Normally the PWM comparator senses a ramp crossing a control voltage (error amplifier output) and terminates the pulse.

Leading edge blanking (LEB) causes the PWM comparator to be ignored for a fixed amount of time after the start of the

pulse. This allows noise inherent with switched mode power conversion to be rejected. The PWM ramp input may not

require any filtering as result of leading edge blanking.

To program a leading edge blanking (LEB) period, connect a capacitor, C, to CLK/LEB. The discharge time set by C and

the internal 10-kΩ resistor determines the blanked interval. The 10-kΩ resistor has a 10% tolerance. For more accuracy,

an external 2-kΩ 1% resistor (R) can be added, resulting in an equivalent resistance of 1.66 kΩ with a tolerance of 2.4%.

The design equation is:

ǒ Ǔ

+ 0.5 R ø 10 kW C

LEB

(2)

Values of R less than 2 kΩ should not be used.

Leading edge blanking is also applied to the current limit comparator. After LEB, if the ILIM pin exceeds the 1-V threshold,

the pulse is terminated. The overcurrent comparator, however, is not blanked. It catches catastrophic overcurrent faults

without a blanking delay. Any time the ILIM pin exceeds 1.2 V, the fault latch is set and the outputs driven low. For this

reason, some noise filtering may be required on the ILIM pin.

UDG−95105

Figure 4. Leading Edge Blanking Operational Waveforms

1...4 5 678 9 10...15

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与5962-8768102V2A相关器件

型号	品牌	描述	获取价格	数据表
5962-8768102V2X	TI	2.2A SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, CQCC20, CERAMIC, LCC-20	获取价格
5962-8768102VEA	TI	High Speed PWM Controller	获取价格
5962-8768102XA	TI	High Speed PWM Controller	获取价格
5962-8768102XX	ETC	Current/Voltage-Mode SMPS Controller	获取价格
5962-87681032X	ETC	Current/Voltage-Mode SMPS Controller	获取价格
5962-8768103EA	TI	2.2A SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, CDIP16	获取价格

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