MC33067DW データシートの表示（PDF） - ON Semiconductor

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MC33067DW

(MC33067 / MC34067) HIGH PERFORMANCE ZERO VOLTAGE SWITCH RESONANT MODE CONTROLLERS

ON Semiconductor 

MC34067, MC33067

VCC

15

Enable /

UVLO Adjust 9

50k

7.0k

50k

7.0k

8.0 V

VCC UVLO

5.1 V

Vref

Reference

Vref UVLO

Vref

5

ROSC

OSC Charge

1

OSC RC

COSC

2

One−Shot RC

CT RT

Oscillator 16

Control Current

3

IOSC RVFO

Error Amp Output 6

8

Noninverting Input

Inverting Input

7

Soft−Start

Error Amp

11

Vref

Q1

D1

Q2

Oscillator

IOSC

4.9V/3.6 V

One−Shot

4.9 V/3.6 V

3.1V

Error Amp

Clamp

9.0 mA

4.2/4.0 V

Steering

Flip−Flop

Q

T

RQ

14

Output A

Power

13 Ground

Output B

12

R

Q

S

Fault

Latch

Fault Comparator

1.0 V

Fault Input

10

4 Ground

Figure 14. MC34067 Representative Block Diagram

5.1 V

COSC

3. 6 V

One−Shot 5.1 V

3.6 V

Output A

Output B

tOS

tOS

tOS

tOS

tOS

tOS

High State Error Amp output, minimum IOSC current

occurring at minimum input voltage, maximum load.

Low State Error Amp output, maximum IOSC current

occurring at maximum input voltage, minimum load.

Figure 15. Timing Diagram

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