MAX17021 데이터 시트보기 (PDF) - Maxim Integrated

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MAX17021

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

SYMBOL

CONDITIONS

RTIME = 71.5k
(12.5mV/μs nominal)

RTIME = 35.7k
(25mV/μs nominal) to 178k

(5mV/μs nominal)

MIN TYP MAX UNITS

-10

+10

-15

+15

Soft-start and soft-shutdown:

RTIME = 35.7k
(3.125mV/μs nominal) to 178k

-25

+25

(0.625mV/μs nominal)

TIME Slew-Rate Accuracy

On-Time

Slow:

IMVP-6.5 (MAX17082/MAX17482): VSLOW = 0V,

1/2 of nominal slew rate, RTIME = 71.5k

(6.25mV/μs nominal);

-15

IMVP-6+ (MAX17021): VDPRSTP = VDPRSLPVR = 5V,

1/4 of nominal slew rate, RTIME = 71.5k

(3.125mV/μs nominal)

Slow:

IMVP-6.5 (MAX17082/MAX17482): VSLOW = 0V,

1/2 of nominal slew rate, RTIME = 35.7k

(12.5mV/μs nominal) to 178k
(2.5mV/μs

nominal);

-15

IMVP-6+ (MAX17021): VDPRSTP = VDPRSLPVR = 5V

1/4 of nominal slew rate, RTIME = 35.7k

(6.25mV/μs nominal) to 178k
(1.25mV/μs

nominal)

RTON = 96.75k
(600kHz per phase), -15

167ns nominal

tON

Measured

at DH_

RTON = 200k
(300kHz per phase),

-10

(Note 3) 333ns nominal

RTON = 303.25k
(200kHz per phase), -15

500ns nominal

+15

%

+15

+15

+10

%

+15

Minimum Off-Time

TON Shutdown Input

Current

tOFF(MIN)

IRTON,SDN

Measured at DH_ (Note 3)

SHDN = GND, VIN = 26V, VCC = VDD = 0V or 5V,

TA = +25°C

300 350

ns

0.01 0.1

μA

BIAS CURRENTS

Quiescent Supply Current

(VCC)

ICC

Measured at VCC, VDPRSLPVR = 5V, FB forced

above the regulation point

2.5

5

mA

Quiescent Supply Current

(VDD)

IDD

Measured at VDD, VDPRSLPVR = 0V, FB forced

above the regulation point, TA = +25°C

0.02

1

μA

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