AIC1571 查看數據表（PDF） - Analog Intergrations

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产品描述 (功能)

比赛名单

AIC1571

5-bit DAC, Synchronous PWM Power Regulator with Dual Linear Controllers

Analog Intergrations 

TYPICAL PERFORMANCE CHARACTERISTICS

UGATE

UGATE

AIC1571

LGATE

LGATE

FIG.1 The gate drive waveforms

60

CUGATE=CLGATE=CGATE

50 VCC=12V

40

30

20

10

CGATE=5000pF

CGATE=2000pF

CGATE=660pF

10000

1000

RT Pull Up to +12V

100

10

RT Pull Down to GND

0

100

150

200

250

300

350

400

Switching Frequency (KHz)

FIG. 2 Bias Supply Current VS. Frequency

1

100 150

200

250

300

350

400

450

Switching Frequency (KHz)

FIG. 3 RT Resistance VS. Frequency

PGOOD (5V/div)

VOUT1 (1V/div)

VOUT2 (1V/div)

VOUT3 (1V/div)

SS (2V/div)

SS (2V/div)

VOUT2 (1V/div)

PGOPOGDO(5OVD/di(v5)V/div)

SSSS(2(V2V/d/diivv)

VOUT3

VOUT3

VOUVTO1 U(1T1V(/1dVi/vd)iv)

FIG.4-1 Circuit 1---Soft Start Interval with 3 Outputs

and PGOOD

FIG.4-2 Circuit 2---Soft Start Interval with 3

Outputs and PGOOD

5

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