APW7074 Ver la hoja de datos (PDF) - Anpec Electronics

Número de pieza

componentes Descripción

Fabricante

APW7074

Synchronous Buck PWM Controller

Anpec Electronics 

APW7074

Electrical Characteristics (Cont.)

Unless otherwise specified, these specifications apply over VCC=12V, and TA =-20~70°C. Typical values are

at TA=25°C.

Symbol

Parameter

Test Conditions

GATE DRIVERS (Cont.)

RLGATE Lower Gate Source Impedance

RLGATE Lower Gate Sink Impedance

TD Dead Time

PROTECTION

PVCC = 12V, ILGATE = 0.1A

PVCC = 12V, ILGATE = 0.1A

UVFB FB Under Voltage Level

Percent of VREF

IOCSET OCSET Source Current (Hi-Side) VOCSET = 11.5V

VOCP OCP Voltage (Low-Side)

SOFT START

ISS Soft-Start Charge Current

Note 3:Guaranteed by design.

APW7074

Unit

Min Typ Max

1.3 1.95 Ω

1.25 1.88 Ω

20

nS

45 50 55 %

150 200 250 uA

230 270 310 mV

8 10 12 uA

Typical Application Circuit

12V

ON

OFF

22nF

33nF

8.2nF

2.7K

1uF

PVCC VCC OCSET

EN

BOOT

SS

UGATE

PHASE

COMP

LGATE

FB

PGND

GND

1N4148

1nF

1uH

2.37K

1uF

470uFx2

0.1uF

APM2509

2.2uH

APM2506

SCD24

1.5nF

7.5R

VIN

470uF

VOUT

1000uFx2

1K

2K

18R 68nF

Copyright © ANPEC Electronics Corp.

5

Rev. A.2 - Feb., 2006

www.anpec.com.tw

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