NCV3063DR2G(2006) Просмотр технического описания (PDF) - ON Semiconductor

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Компоненты Описание

производитель

NCV3063DR2G
(Rev.:2006)

1.5 A, Step−Up/Down/Inverting Switching Regulators

ON Semiconductor 

NCP3063, NCP3063B, NCV3063

+VIN = +12 V

1

J201

C201

0.1 mF

J202

1

GND

R201

0R15

+

C202

220 mF / 50 V

U201

8 N.C. SWC 1

7 IPK SWE 2

6 VCC TCAP 3

5 COMP GND 4

NCP3063

L201 47 mH

C203

2.2 nF

D201

1N5819

C206

0.1 mF

R203

+VOUT = +3.3 V / 800 mA

1

+

C205

470 mF / 25 V

J203

J204

1

GND

R202

2K4 ±1%

3K9 ±1%

Figure 14. Typical Buck Application Schematic

Value of Components

Name

Value

L201

D201

47 mH, Isat > 1.5 A

1 A, 40 V Schottky Rectifier

C202

220 mF, 50 V, Low ESR

C205

470 mF, 25 V, Low ESR

C203

2.2 nF Ceramic Capacitor

Name

R201

R202

R203

C201

C202

Value

150 mW, 0.5 W

2.40 kW

3.90 kW

100 nF Ceramic Capacitor

100 nF Ceramic Capacitor

Test Results

Test

Line Regulation

Load Regulation

Output Ripple

Efficiency

Short Circuit Current

Condition

Vin = 9 V to 12 V, Io = 800 mA

Vin = 12 V, Io = 80 mA to 800 mA

Vin = 12 V, Io = 40 mA to 800 mA

Vin = 12 V, Io = 400 mA to 800 mA

Vin = 12 V, Rload = 0.15 W

Results

8 mV

9 mV

≤ 85 mVpp

> 73%

1.25 A

Figure 15. Buck Demoboard Layout

76

74

72

70

68

66

64

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

OUTPUT LOAD (Adc)

Figure 16. Efficiency vs. Output Current for the Buck

Demo Board at Vin = 12 V, Vout = 3.3 V, TA = 255C

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