APU3048M 데이터 시트보기 (PDF) - Advanced Power Electronics Corp

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APU3048M

DUAL SYNCHRONOUS PWM CONTROLLER CIRCUITRY AND LDO CONTROLLER

Advanced Power Electronics Corp 

APU3048

BLOCK DIAGRAM

Vcc 9

25uA

SS 15

POR

1.25V

25K

25K

Fb1 16

Comp1 3

64uA Max

Error Amp1

Bias

Generator

4.2V / 4.0V

VcH1

VcH2

3.5V / 3.3V

3.5V / 3.3V

UVLO

3V

1.25V

POR

PWM Comp1

Ramp1

R

Q

S

Reset Dom

Set1

Ramp2

Two Phase

Oscillator

Set2

SS > 2V

1.25V

25K

25K

Fb2 2

Comp2 4

1.25V

25K

25K

Fb3 14

Gnd 1

Error Amp2

PWM Comp2

0.5V

S

Q

R

Reset Dom

POR

Vcc

2V

SS

40mA LDO Controller

Figure 2 - Block diagram of the APU3048.

12 VcH1

11 HDrv1

10 LDrv1

5 VcH2

6 HDrv2

7 LDrv2

8 PGnd

13 VOUT3

4

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