AP494 Просмотр технического описания (PDF) - Anachip Corporation

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Компоненты Описание

производитель

AP494

Voltage Mode PWM Controller

Anachip Corporation 

Voltage Mode PWM Controller

AP494

Figure 2. OPERATIONAL TEST CIRCUIT AND WAVEFORMS

Voltage

at C1

Voltage

at C2

Voltage

at CT

DTC

Threshold Voltage

0V

FEEDBACK

0.7 V

Duty Cycle

Threshold Voltage

MAX

0%

VOLTAGE WAVEFORMS

Figure 3. AMPLIFIER CHARACTERISTICS

Vcc

0V

Vcc

0V

0%

Error Amplifier Under Test

+

VIn

-

FEEDBACK

+

Vref

-

Other Amplifier

Figure 4. COMMON-EMITTER CONFIGURATION

Each Output

Circuit

15 V

68Ω

2W

Output

CL=15 pF

(See Note A)

TEST CIRCUIT

NOTE A. CL includes probe and jig capacitance.

tf

tr

90%

90%

10%

10%

OUTPUT VOLTAGE WAVEFORM

Anachip Corp.

www.anachip.com.tw

Rev.1.0 Oct 11, 2004

5/9

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