ISL6446 查看數據表（PDF） - Renesas Electronics

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ISL6446

Dual (180°Out-of-Phase) PWM and Linear Controller

Renesas Electronics 

ISL6446

Electrical Specifications Operating conditions unless otherwise noted: VIN = 12V, or VCC = 5V ±10%, TA = -40°C to +85°C. Typical values

are at +25°C. Boldface limits apply across the operating temperature range, -40°C to +85°C (Continued)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

(Note 9)

TYP

MAX

(Note 9)

UNIT

POWER-ON RESET ON VCC

Rising Threshold

Falling Threshold

PWM CONVERTERS

VPOR_r

VPOR_f

4.2

4.4

4.48

V

3.85

4.0

4.1

V

Minimum UGATE On-time

Maximum Duty Cycle

Maximum Duty Cycle

FBx Pin Bias Current

OSCILLATOR

tUGATE_min (Note 7)

DCmax VIN = 5V or 12V; fSW = 300kHz

DCmax VIN = 5V; fSW = 2.58MHz

IFBx VFB1 = VFB2 = 600mV

100

ns

95

%

80

%

-250

30

250

nA

Low-end Frequency

Oscillation Frequency

High-end Frequency

Frequency Adjustment Range

PWM Sawtooth Ramp Amplitude

(Peak-to-peak)

fSW

VIN = 12V; RT = 163kΩ

fSW

VIN = 5V or 12V; RT = 52.3kΩ

VIN = 24V; RT = 52.3kΩ

fSW

VIN = 5V; RT = 4.75kΩ

VIN = 12V; RT = 4.75kΩ

fSW RT = 163kΩ; (Note 7)

RT = 4.75kΩ; (Note 7)

VP-P (Note 8)

103

kHz

270

300

330

kHz

270

305

340

kHz

2.25

2.5

2.75

MHz

2.25

2.59

2.85

MHz

0.1

MHz

2.6

MHz

1.25

V

PWM Sawtooth Ramp Offset

VPWM_OFF (Note 8)

PWM CONTROLLER GATE DRIVERS (Note 7)

1.25

V

Upper Gate Pull-up Resistance

2.6

Ω

Upper Gate Pull-down Resistance

2

Ω

Lower Gate Pull-up Resistance

2.6

Ω

Upper Gate Pull-down Resistance

2

Ω

Rise Time

Fall Time

Dead Time Between Drivers

CL = 3300pF

CL = 3300pF

25

ns

25

ns

20

ns

ERROR AMPLIFIERS

DC Gain

Gain (Note 8)

88

dB

Gain-bandwidth Product

GBWP (Note 8)

15

MHz

Slew Rate

SR COMP = 10pF (Note 8)

5

V/µs

Maximum Output Voltage

Minimum Output Voltage

PROTECTION AND OUTPUT MONITOR

VEA_H

VEA_L

ICOMP_SRC = 40µA

ICOMP_SINK = 40µA

3.9

4.2

V

0.8

1.1

V

Overvoltage Threshold

OV

111

116

121

%

Undervoltage Threshold

UV

77

82

88

%

OCSET Current Source

OCSET Current Source

OCSET Current Source

LINEAR CONTROLLER

IOCSET

IOCSET

IOCSET

VOCSET = 4.5V, TA = -40°C

VOCSET = 4.5V, TA = +25°C

VOCSET = 4.5V, TA = +85°C

80

µA

110

µA

140

µA

Drive Sink Current

LCFB Feedback Threshold

ILCDR

VLCFB

LCDR

TA = +25°C

TA = -40°C to +85°C

TA = 0°C to +70°C

50

mA

0.595

V

0.570

0.620

V

0.580

0.610

V

FN7944 Rev 2.00

October 12, 2015

Page 7 of 19

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