LT8580 Ver la hoja de datos (PDF) - Linear Technology

Número de pieza

componentes Descripción

Fabricante

LT8580

Boost/SEPIC/Inverting DC/DC Converter with 1A, 65V Switch, Soft-Start and Synchronization

Linear Technology 

typical Applications

1.2MHz Inverting Converter Generates –48V Output From 12V Input

C2

2.2µF

49.9Ω

L1

150µH

C1

1µF

L2

330µH

VIN

12V

619k

D1

VIN

SW

SHDN

FBX

CIN

LT8580

1µF

SYNC

VC

RT GND SS

69.8k

0.33µF

576k

20.5k

47pF

4.7nF

VOUT

–48V

70mA

COUT

2.2µF

8580 TA04a

L1: COOPER 150µH DR74-151

L2: COOPER 330µH DR74-331

D1: DIODES, INC. DFLS1100

CIN: 1µF, 50V, 0805, X7R

COUT: 2.2µF, 100V, 1206, X7R

C1: 1µF, 100V, 0805, X7S

C2: 2.2µF, 100V, 1206, X7S

Efficiency and Power Loss

90

1040

80

920

70

800

60

680

50

560

40

440

Switching Waveforms

30

20

0

EFFICIENCY 320

POWER LOSS

200

10 20 30 40 50 60 70

LOAD CURRENT (mA)

8580 TA04b

Start-Up Waveforms

LT8580

VSW

20V/DIV

VOUT

20mV/DIV

AC-COUPLED

IL1 + IL2

200mA/DIV

200µs/DIV

8580 TA04c

VSW

20V/DIV

VOUT

10V/DIV

IL1 + IL2

200mA/DIV

For more information www.linear.com/LT8580

200µs/DIV

8580 TA04d

8580f

27

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