MAX17482GTL Ver la hoja de datos (PDF) - Maxim Integrated

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MAX17482GTL

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies

Maxim Integrated 

Dual-Phase, Quick-PWM Controllers for

IMVP-6+/IMVP-6.5 CPU Core Power Supplies

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, VIN = 10V, VCC = VDD = VSHDN = VPGDIN = VPSI = VILIM = 5V, V3P3 = 3.3V, DPRSLPVR = GNDS = GND, VCSP1

= VCSN1 = VCSP2 = VCSN1 = 1.0000V, FB = FBAC, RFBAC = 3.57kΩ from FBAC to CSN1, D6–D0 = [0101000]; MAX17082/MAX17482:

VSLOW = 5V; MAX17021: DPRSTP = GND; TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)

PARAMETER

CLKEN, PWRGD, and

PHASEGD Transition

Blanking Time

(VID Transitions)

SYMBOL

CONDITIONS

tBLANK

Measured from the time when FB reaches the

target voltage (Note 2)

MIN TYP MAX UNITS

20

μs

PHASEGD Transition

Blanking Time (Phase 2

Enable Transitions)

CLKEN Output Low Voltage

CLKEN Output High

Voltage

Number of DH2 pulses for which PHASEGD is

blanked after phase 2 is enabled

Low state, ISINK = 3mA

High state, ISOURCE = 3mA

V3P3 -

0.4

PWRGD, PHASEGD Output

Low Voltage

Low state, ISINK = 3mA

PWRGD, PHASEGD

Leakage Current

CSN1 Pulldown Resistance

in Shutdown

High-impedance state, PWRGD, PHASEGD forced

to 5V, TA = +25°C

SHDN = 0, measured after soft-shutdown

completed (DL_ = low)

VCC Undervoltage Lockout

(UVLO) Threshold

VUVLO(VCC)

Rising edge, 65mV typical hysteresis,

controller disabled below this level

4.05

THERMAL PROTECTION

VRHOT Trip Threshold

Measured at THRM as a percentage of VCC,

29

falling edge, typical hysteresis = 75mV

VRHOT Delay

tVRHOT

THRM forced 25mV below the VRHOT trip

threshold, falling edge

VRHOT Output

On-Resistance

RON(VRHOT) Low state

VRHOT Leakage Current

High-impedance state, VRHOT forced to 5V,

TA = +25°C

THRM Input Leakage

ITHRM VTHRM = 0 to 5V, TA = +25°C

-0.1

Thermal-Shutdown Threshold TSHDN Typical hysteresis = 15°C

VALLEY CURRENT LIMIT, DROOP, AND CURRENT BALANCE

VTIME - VILIM = 100mV

7

Current-Limit Threshold

Voltage (Positive)

VLIMIT VCSP_ - VCSN_

VTIME - VILIM = 500mV

45

ILIM = VCC

20

Current-Limit Threshold

Voltage (Negative)

VLIMIT(NEG) VCSP_ - VCSN_, nominally -125% of VLIMIT

-4

Accuracy

32

10

4.27

30

10

2

160

10

50

22.5

Pulses

0.4

V

V

0.4

V

1

μA

4.48

V

31

%

μs

10

1

μA

+0.1 μA

°C

13

55

mV

25

+4

mV

Current-Limit Threshold

Voltage (Zero Crossing)

VZERO VGND - VLX_, DPRSLPVR = 5V

1

mV

_______________________________________________________________________________________ 5

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