AIC1574 Просмотр технического описания (PDF) - Analog Intergrations

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AIC1574

5-bit DAC, Synchronous PWM Power Regulator with Triple Linear Controllers

Analog Intergrations 

AIC1574

n ELECTRICAL CHARACTERISTICS (Continued)

PARAMETER

TEST CONDITIONS

SYNCHRONOUS PWM CONTROLLER AMPLIFIER

DC Gain

(G.B.D.)

Gain-Bandwidth Product

(G.B.D.)

Slew Rate

(G.B.D.) note 1.

PWM CONTROLLER GATE DRIVER

Upper Drive Source

VCC=12V, VUGATE = 6V

Upper Drive Sink

VUGA T E=1V

Lower Drive Source

VCC=12V, VLGATE =6V

Lower Drive Sink

VLGATE=1V

PROTECTION

VSEN1 Over-Voltage

( VSEN1/DACOUT)

FAULT Sourcing Current

OCSET Current Source

Soft-Start Current

VSEN1 Rising

VCC-VFAULT/RT =2.0V

VOCSET =4.5VDC

POWER GOOD

VSEN1 Upper Threshold

( VSEN1/DACOUT )

VSEN1 Under-Voltage

( VSEN1/DACOUT )

VSEN1 Hysteresis

(VSEN1/DACOUT)

PGOOD Voltage Low

VSEN1 Rising

VSEN Falling

Upper and Lower Threshold

IPGOOD=-4mA

SYMBOL MIN. TYP. MAX. UNIT

GBWP

SR

IUGH

RUGL

ILGH

RLGL

80

dB

13

MHz

6

V/µs

0.9

A

2.8 3.5 Ω

1

A

2.2 3.0 Ω

OVP

116 120 %

IOVP

20

mA

IOCSET 170 200 230 µA

ISS

25

µA

108

111 %

92

95

%

VPGOOD

2

%

0.4 0.8

V

Note 1. Without internal compensation network, the gain bandwidth product is 13MHz. Being associated with in-

ternal compensation networks, the Bode Plot is shown in Fig. 3, “Internal Compensation Gain of PWM Error Am-

plifier”.

5

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