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AP3583A

Single Phase Synchronous Buck PWM Controller With Reference Input

BCD Semiconductor 

Data Sheet

Single Phase Synchronous Buck PWM Controller With Reference Input AP3583/A

Typical Performance Characteristics (Continued)

VOUT

2V/div

VREFIN

2V/div

VLGATE

10V/div

Time 10ms/div

VIN

5V/div

VOUT

0.5V/div

VLGATE

10V/div

IL

10A/div

Time 1ms/div

Figure 14. REFIN Operation

(VIN=12V, VOUT=1.2V, IOUT=5A)

Figure 15. Power Input Detection

(VIN=12V, VOUT=1.2V, IOUT=0A)

VUGATE-PHASE

2V/div

VPHASE

2V/div

VUGATE

5V/div

VLGATE

2V/div

Time 40ns/div

VLGATE

2V/div

VUGATE

5V/div

VPHASE

2V/div

VUGATE-PHASE

2V/div

Time 40ns/div

Figure 16. UGATE Turn-off Waveforms

(VIN=12V, VOUT=1.2V, IOUT=20A)

Figure 17. UGATE Turn-on Waveforms

(VIN=12V, VOUT=1.2V, IOUT=20A)

Dec. 2011 Rev. 1. 1

BCD Semiconductor Manufacturing Limited

9

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