HV9110 데이터 시트보기 (PDF) - Microchip Technology

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HV9110

High-Voltage Current-Mode PWM Controller

Microchip Technology 

HV9110/HV9112/HV9113

4.0 TEST CIRCUITS

The test circuits for characterizing error amplifier output impedance, ZOUT, and error amplifier, power supply rejection

ratio, PSRR, are shown in Figure 4-1 and Figure 4-2.

+10 VDD

1V swept 100 Hz-2.2 MHz

60k

–

FB

+

Reference

GND

100 nF

Tektronix

P6021

V1

(1 turn

secondary)

V2 40k

NOTE:

Set Feedback Voltage so that VCOMP = VDIVIDE ±1 mV

before connecting transformer

FIGURE 4-1:

Error Amp ZOUT.

0.1V swept

10 Hz-1.0 MHz

100k1%

10.0V

100k1%

–

4.0V

+

Reference

V2

V1

100 nF

FIGURE 4-2:

PSRR.

 2016 Microchip Technology Inc.

DS20005505A-page 9

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