MAX8537 View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

MAX8537

Dual-Synchronous Buck Controllers for Point-of-Load, Tracking, and DDR Memory Power Supplies

Maxim Integrated 

Dual-Synchronous Buck Controllers for Point-of-

Load, Tracking, and DDR Memory Power Supplies

Typical Operating Characteristics (continued)

(Circuit of Figure 1, TA = +25°C, 400kHz switching frequency, VIN = 12V, unless otherwise noted.)

POWER-OK

MAX8537 toc10

VTT STARTUP AND SHUTDOWN

MAX8537 toc11

VDDQ LOAD TRANSIENT

AND VTT TRACKING

MAX8537 toc12

IOUT_VDDQ = 20A

IOUT_VTT = 8A

2ms/div

VDDQ

2V/div

POK1

5V/div

VTT

1V/div

POK2

5V/div

2ms/div

EN2

5V/div

VTT

1V/div

VTTR

1V/div

VDDQ

2V/div

20A

di/dt = 5A/µs

10A

VTT_IOUT = 12A

VTTR = 15mA

200µs/div

VDDQ

100mV/div

VTT

50mV/div

VTTR

50mV/div

VDDQ_IOUT

10A/div

VTT LOAD-TRANSIENT RESPONSE

MAX8537 toc13

8A

di/dt = 1A/µs

VTT

AC-COUPLED

50mV/div

VTTR

AC-COUPLED

50mV/div

VDDQ

AC-COUPLED

50mV/div

-8A

IOUT_VDDQ = 20A

VTT_IOUT

10A/div

IOUT_VTTR = 15mA

200µs/div

VTT = 1.25V AT 12A BODE PLOT,

VIN = 12V

150

125

100

75

50

25

0

-25

-50

102

103

104

105

106

Hz

VDDQ = 2.5V AT 20A BODE PLOT,

VIN = 12V

180

160

140

120

100

80

60

40

20

0

-20

-40

100

1k

10k

100k

1M

kHz

SHORT CIRCUIT AND RECOVERY

MAX8537 toc16

VOUT1

1V/div

VOUT2

IL1

1V/div

10V/div

IIN

10ms/div

5A/div

6 _______________________________________________________________________________________

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