MAX1980 데이터 시트보기 (PDF) - Maxim Integrated

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MAX1980

Quick-PWM Slave Controller with Driver Disable for Multiphase DC-DC Converter

Maxim Integrated 

Quick-PWM Slave Controller with

Driver Disable for Multiphase DC-DC Converter

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, V+ = 15V, VCC = VDD = 5V, VOUT = VCOMP = 1.2V, VCM+ = VCM- = VCS+ = VCS- = 1.2V, DD = VCC , TA = 0°C to

+85°C, unless otherwise noted. Typical values are at TA = +25°C.)

PARAMETER

CURRENT SENSING

On-Time Adjustment Range

COMP Output Current

Current-Balance Offset

SYMBOL

CONDITIONS

ICOMP

0.42V < VCOMP < 2.8V, VOUT ≥ 0.7V

Sink and source

(VCM+ - VCM-) - (VCS+ - VCS-), ICOMP = 0,

-100mV ≤ (VCM+ - VCM-) ≤ +100mV

MIN TYP MAX UNITS

-40

30

-1.25

+40

%

µA

+1.25 mV

Current-Balance

Transconductance

(VCM+ - VCM-) - (VCS+ - VCS-) = ±25mV

1.2

mS

Current-Sense, Common-Mode

Range

CM+, CM-, CS+, CS-

-0.2

+2.0

V

Current-Sense Input Current

Positive Current-Limit Threshold

Negative Current-Limit

Threshold

ILIM Standby Threshold Voltage

ILIM Input Current

LIMIT Propagation Delay

LIMIT Output Low Voltage

LIMIT Leakage Current

FAULT PROTECTION

VC_LIM

CM+, CM-, CS+, CS-

VCM+ - VCM- and

VCS+ - VCS-

VCS+ - VCS-

VILIM = 0.5V

VILIM = 1V

VILIM = 0.5V

VILIM = 1V

tLIMIT

VOL(LIMIT)

ILIMIT

Falling edge, 3mV over trip threshold

ISINK = 1mA

LIMIT forced to 5.5V

-1

1

µA

47.5

50

52.5

mV

97.5 100 102.5

-80

-75

-70

mV

-160 -150 -140

0.2

0.3

V

-100

100

nA

1.5

µs

0.1

V

< 0.01

1

µA

VCC Undervoltage Lockout

Threshold

Thermal-Shutdown Threshold

GATE DRIVERS

Rising edge, hysteresis = 20mV, switching

disabled below this level

Rising, hysteresis = 15°C (typ)

3.45

3.85

V

160

°C

DH Gate-Driver On-Resistance

(Note 3)

RON(DH) VBST - VLX forced to 5V

1.0

4.5

Ω

DL Gate-Driver On-Resistance

(Note 3)

High state (pullup)

RON(DL)

Low state (pulldown)

1.0

4.5

Ω

0.4

2.0

DH Gate-Driver Source/Sink

Current

DL Gate-Driver Sink Current

DL Gate-Driver Source Current

Dead Time

Driver Disable Delay

IDH

DH forced to 2.5V, VBST - VLX forced to 5V

IDL

DL forced to 2.5V

IDL

DL forced to 2.5V

DL rising

DH rising

DD falling (Note 4)

tDD

DD rising (Note 4)

1.3

A

4.0

A

1.3

A

35

ns

26

225 1000

ns

65 1000

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