SC2443 datasheet(8/22 Pages) SEMTECH

tên linh kiện	SC2443

Giải thích chi tiết về linh kiện	Dual-Phase Single or Two Output Synchronous Step-Down Controller

PDF	22 Pages

Scroll/Zoom	100%

nhà sản xuất	SEMTECH [Semtech Corporation]

Trang chủ	http://www.semtech.com

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8 / 22 page

SC2443

Typical Application Circuit Performance

Circuit Conditions : Dual independent outputs configuration as shown in page 7

Soft Start (VOUT)

0ms/DIV

VIN

2V/DIV

VOUT

V/DIV

COMP

EN/SS

2V/DIV

Soft Start (Both outputs)

VOUT2

2V/DIV

COMP2

V/DIV

EN2/SS2

2V/DIV

VIN

2V/DIV

VOUT2

2V/DIV

SS2/EN2

2V/DIV

VOUT

0.5V/DIV

SS/EN

2V/DIV

Gate waveforms (VOUT_2 = 20A)

us/DIV

GDH

GDL

0V/DIV

GDH2

GDL2

0V/DIV

Output Ripple (VOUT_20A)

Output Ripple (VOUT2_20A)

GDH2

GDL2

0V/DIV

Transient Response (VOUT _ 2A ~ 7A)

200us/DIV

VOUT

50mV/DIV

OCP Trip (VOUT = 30A)

VOUT2

50mV/DIV

VOUT

0.5V/DIV

GDH

GDL

20V/DIV

SS/EN

2V/DIV

0ms/DIV

20ms/DIV

VOUT

50mV/DIV

GDH

GDL

0V/DIV

us/DIV

200us/DIV

400us/DIV

Combined Efficiency (2VIN to VOUT & 2.5VOUT)

IOUT(A)

EFF (%)

VOUT2

V/DIV

GDL2

0V/DIV

GDH2

20V/DIV

SS2/EN2

2V/DIV

400us/DIV

Soft Start (VOUT2)

VOUT2

50mV/DIV

Transient Response (VOUT2 _ 2A ~ 7A)

OCP Trip (VOUT2 = 28A)

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