Diodes AP3585A/B/C Manual de usuario descargar pdf (Pagina 5)

AP3585A/B/C

Document number: DS36819 Rev. 1 - 2

5 of 18

www.diodes.com

January 2014

© Diodes Incorporated

AP3585A/B/C

A

Product Line o

f

Diodes Incorporated

NEW PRODUCT

Electrical Characteristics (Cont. V

CC

= 12V, T

A

= +25

o

C, unless otherwise specified.)

Symbol Parameter Conditions Min Typ Max Unit

POWER ON RESET

V

POR

V

CC

Rising Threshold V

CC

Rising

4.0 4.2 4.4 V

V

POR_HYS

V

CC

Threshold Hysteresis

–

– 500 – mV

ERROR AMPLIFIER

G

DC_OL

Open Loop DC Gain – 55 70 – dB

G

BW

Gain-bandwidth Product – – 10 – MHz

SR Slew Rate – 3 6 – V/µs

– Transconductance – – 800 1100 µA/V

– Output Source Current

V

FB

< V

REF

80 120 – µA

– Output Sink Current

V

FB

> V

REF

80 120 – µA

PWM CONTROLLER GATE DRIVERS

I

UG_SRC

Upper Gate Source Current

V

BOOT

-V

PHASE

= 12V,

V

BOOT

-V

UGATE

= 6V

– -1.0 – A

I

UG_SNK

Upper Gate Sink Current

V

BOOT

-V

PHASE

= 12V,

V

BOOT

-V

UGATE

= 6V

– 1.5 – A

R

UGATE

Upper Gate Sink

Resistance

50mA Source Current

– 2 4 Ω

I

LG_SRC

Lower Gate Source Current

V

CC

-V

LGATE

= 6V

– -1 – A

I

LG_SNK

Lower Gate Sink Current

V

LGATE

= 6V

– 1.5 – A

R

LGATE

Lower Gate Sink

Resistance

50mA Source Current

– 1 2 Ω

–

PHASE Falling to LGATE

Rising Delay

V

PHASE

< 1.2V to V

LGATE

>

1.2V

– 30 – ns

–

LGATE Falling to UGATE

Rising Delay

V

LGATE

< 1.2V to

(V

UGATE

-V

PHASE

) > 1.2V

– 30 – ns

– Minimum Duty Cycle – – 0 – %

– Maximum Duty Cycle – 75 82 89 %

OSCILLATOR

f

OSC

Oscillator Frequency

AP3585A/B 270 300 330

kHz

AP3585C 180 200 220

∆V

OSC

Ramp Amplitude – – 1.4 –

V

P-P

REFERENCE VOLTAGE

V

FB

Feedback Voltage

AP3585A 0.788 0.8 0.812 V

AP3585B/C 0.591 0.6 0.609 V

I

FB

Feedback Bias Current

V

FB

= 5V

– 10 50 nA

PROTECTION

V

FB_UVP

Under Voltage Protection

–

0.3 0.4 0.5 V

V

FB_OVP

Over Voltage Protection

AP3585A – 1.1 –

V

AP3585B/C – 0.8 –

I

OCSET

OC Current Source

–

9 10 11 µA

V

OCP_MAX

Built-in Maximum OCP

Voltage

–

– 0.375 – V

t

SS

Soft-start Interval

AP3585A – 2 –

ms

AP3585B – 1.5 –

AP3585C

– 2.4 –

V

COMP/EN

Enable Threshold

–

0.25 0.30 0.35 V

T

OTSD

Thermal Shutdown

–

– +160 – ºC

T

HYS

Thermal Shutdown

Hysteresis

–

– +20 – ºC

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