TND307 ONSEMI [ON Semiconductor], TND307 Datasheet

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TND307

Manufacturer Part Number
TND307
Description
Graphical Data Test Circuits for the NCP1650
Manufacturer
ONSEMI [ON Semiconductor]
Datasheets

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Prepared by
Alan Ball
ON Semiconductor Applications Engineering
were used to obtain the data for the graphical section of the
NCP1650/D data sheet. Each graph has a schematic
associated with it and in some cases a description of the
procedure.
increments. For each value of I
various values from 0 to 3.8 volts. Record output P
March, 2002 – Rev.0
The following circuits are the test configurations that
Power up chip. Set I
Semiconductor Components Industries, LLC, 2002
0.5 mF
Figure 1. Power Multiplier Family of Curves
0–5 V
0.1 mF
47 k
Re: NCP1650/D data sheet, Figure 3
30 k
10 k
3
4
5
6
7
8
9
GND
AC Comp
Ref Filter
AC Input
FB/SD
Loop Comp
P
P
S–
comp
max
1
V
470 pF
15
between 0 and –200 mV in 50 mV
in
S–
C
T
14
set the ac input (pin 5) to
Output
I
2
V
avg fltr
Ramp
Comp
ref
I
avg
I
0.1 mF
S–
13
47 k
16
12
10
11
1 nF
15 k
0 to –5 V
300
max
1 mF
(pin 9).
14 V
10
1
0.05 mF
Figure 2. Reference Multiplier Family of Curves
0–5 V
0–5 V
1 k
Re: NCP1650/D data sheet, Figure 4
30 k
10 k
3
4
5
6
7
8
9
AC Comp
Ref Filter
AC Input
FB/SD
Loop Comp
P
P
GND
APPLICATION NOTE
comp
max
1
V
15
470 pF
in
http://onsemi.com
C
T
14
Output
2
I
V
avg fltr
Ramp
Comp
ref
Publication Order Number:
I
I
avg
0.1 mF
S–
47 k
13
16
12
10
11
1 mF
TND307/D
14 V

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TND307 Summary of contents

Page 1

... APPLICATION NOTE ref 3 AC Comp 16 Output 4 Ref Filter S– AC Input 6 FB/ avg Loop Comp avg fltr P comp 9 P Ramp max Comp GND 470 Publication Order Number: TND307/D ...

Page 2

... C T Figure 5. Max Duty Cycle versus Frequency Re: NCP1650/D data sheet, Figure 7 Measure frequency and duty cycle for various values TND307 3 Freq Cntr Figure 4. Ramp Peak versus Frequency T Re: NCP1650/D data sheet, Figure 6 Bias device per the above figure ...

Page 3

... P comp 9 P Ramp max Comp GND Figure 11. Frequency versus C Re: NCP1650/D data sheet, Figure 16 TND307 Comp 1 300 Ref Filter 5 AC Input 0 to – FB/SD 7 Loop Comp comp ...

Page 4

... TND307 Comp 4 Ref Filter 5 AC Input 6 FB/SD 7 Loop Comp 8 P 1.5 V comp 9 P max GND 3 Figure 13. UVLO Turn On/Turn Off Re: NCP1650/D data sheet, Figure Comp 0.65 k 1. Ref Filter 5 AC Input ...

Page 5

... I 8 avg fltr 1 comp 9 P Ramp max Comp GND 3 Figure 17. Bias Current versus V Re: NCP1650/D data sheet, Figure 23 TND307 ref 16 Output 12 I 0–5 V S– avg 11 I 1.5 V avg fltr ...

Page 6

... Figure 19. Minimum Duty Cycle versus Frequency Re: NCP1650/D data sheet, Figure 25 Apply power supply and then to 1.5 V supply. Measure on time, and period at pin 16 using an oscilloscope. Vary capacitor value from 2000 pF to 100 pF for frequency range of 25 kHz to 300 kHz. TND307 http://onsemi ...

Page 7

... Notes TND307 http://onsemi.com 7 ...

Page 8

... N. American Technical Support: 800–282–9855 Toll Free USA/Canada TND307 JAPAN: ON Semiconductor, Japan Customer Focus Center 4–32–1 Nishi–Gotanda, Shinagawa–ku, Tokyo, Japan 141–0031 Phone: 81–3–5740–2700 Email: r14525@onsemi.com ON Semiconductor Website: http://onsemi.com For additional information, please contact your local Sales Representative. http://onsemi.com 8 TND307/D ...

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