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PL384XBP8 Datasheet(PDF) 5 Page - Cystech Electonics Corp.

Part No. PL384XBP8
Description  High Performance Current Mode PWM Controllers
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Maker  CYSTEKEC [Cystech Electonics Corp.]
Homepage  http://www.cystekec.com
Logo CYSTEKEC - Cystech Electonics Corp.

PL384XBP8 Datasheet(HTML) 5 Page - Cystech Electonics Corp.

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CYStech Electronics Corp.
Spec. No. : C510P8
Issued Date : 2003.04.24
Revised Date :
Page No. : 5/15
PL384XBP8
CYStek Product Specification
Figure 1: Open Loop Test Circuit
8
7
6
5
4
3
2
1
VREF
0.1uF
VI
OUTPUT
GROUND
0.1uF
1W
1k
VI
VREF
OUTPUT
A
RT
2N2222
4.7k
1k
4.7k
100k
5k
COMP
VFB
ISENSE
RT/CT
CT
GROUND
ISENSE
ADJUST
ERROR AMP.
ADJUST
High peak currents associated with capacitive loads necessitate careful grounding techniques. Timing and bypass
capacitors should be connected close to pin 5 in a single point ground. The transistor and 5kΩ potentiometer are
used to sample the oscillator waveform and apply an adjustable ramp to pin 3.
Figure 2:Timing Resistor vs Oscillator Frequency
1
10
100
10
100
1000
Oscillator Frequency---fosc(kHz)
CT=100pF
200pF
500pF
10nF
5nF
2nF
1nF
Vi=15V,TA=25
Figure 3:Output Dead-Time vs Oscillator Frequency
1
10
100
10
100
1000
Oscillator Frequency---fosc(kHz)
CT=200pF
CT=500p
F
CT=1nF
CT=2nF
CT=10nF
CT=5nF
CT=100pF
Vi=15V
TA=25


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