Datasheet > TND308/D

TND308/D

更新时间： 2024-10-29 23:36:55

品牌	Logo	应用领域
其他 - ETC		测试
页数	文件大小	规格书
8页	69K
描述
Graphical Data Test Circuits for the NCP1651

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TND308/D 数据手册

TND308

Graphical Data Test

Circuits for the NCP1651

Prepared by

Alan Ball

ON Semiconductor Applications Engineering

http://onsemi.com

The following circuits are the test configurations that were

used to obtain the data for the graphical section of the

NCP1651/D data sheet. Each graph has a schematic

associated with it and in some cases a description of the

procedure.

APPLICATION NOTE

14 V

0.1 mF

1 mF

ref

Startup

Output

1 nF

S+

AC Comp

FB/SD

0–1 V

AC Comp

avg

avg fltr

0.5 nF

Ref Fltr

1.5 V

AC Input

GND

AC Input

GND

Ramp

Comp

Ramp

Comp

4.7 k

470 pF

47 k

Figure 1. Current Sense Amplifier Gain

Figure 2. FB/SD V–I Characteristics

Re: NCP1651/D data sheet, Figure 4

Re: NCP1651/D data sheet, Figure 5

Energize all three power sources, beginning with the 14 volt

supply. Cycle the 14 volt supply down to 8 volts and back to

14 to start unit operating. Adjust power supply on pin 5 and

read voltages on pins 6 and 7.

Using a decade resistance box for R8, set it to 1 MW. Turn

on the 14 volt source. Cycle it down to 8 volts and back up to

14 to turn the unit on. Read the voltage and pin 8 and note the

resistance. Reduce R8 until the unit shuts down. Calculate the

current for each reading.

Semiconductor Components Industries, LLC, 2002

Publication Order Number:

May, 2002 – Rev.0

TND308/D

12 3 4 5 6 7 8

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