MP2932 - 6-PHASE PWM CONTROLLER WITH 8-BIT ADC CODE

MP2932 Rev.1.02

www.MonolithicPower.com

4

4/30/2012

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© 2012 MPS. All Rights Reserved.

Parameter

Test conditions

Min

Typ

Max

Units

Error Amplifier

Maximum Output Voltage

3.8

4.2

4.6

V

Output High Voltage @ 2mA

3.6

V

Output Low Voltage @ 2mA

1.8

V

Remote-sense Amplifier

Bandwidth

20

MHz

Output High Current

VSEN-RGND=2.5V

-100

100

μA

Output High Current

VSEN-RGND=0.6

-100

100

μA

PWM Output

PWM Output Voltage Low Threshold

ILOAD=±500μA

0.5

V

PWM Output Voltage High Threshold ILOAD=±500μA

4.3

V

Current Sense and Over-current Protection

Sensed Current Tolerance(IDROOP)

ISEN1=ISEN2=ISEN3=ISEN4=

ISEN5=ISEN6=50μA

47

50

53

μA

Overcurrent Trip level for Average

Current

72

85

98

μA

Peak Current Limit for Individual

Channel

120

μA

Maximum Voltage at IDROOP and

IOUT Pins

1.98

2.01

2.04

V

Thermal Monitoring and Fan Control

TM Input Voltage for VR_FAN TRIP

1.55

1.65

1.75

V

TM Input Voltage for VR_FAN Reset

1.85

1.95

2.05

V

TM Input Voltage for VR_HOT Trip

1.3

1.4

1.5

V

TM Input Voltage for VR_HOT Reset

1.55

1.65

1.75

V

Leakage current of VR_FAN

With externally pull-up resistor

connected to VCC

30

μA

VR_RAN Low Voltage

IVR_FAN=4mA

0.4

V

Leakage Current of VR_HOT

With externally pull-up resistor

connected to VCC

30

μA

VR_HOT Low Voltage

IVR_HOT=4mA

0.4

V

VR Ready and Protection Monitors

Leakage Current of VR_RDY

With externally pull-up resistor

connected to VCC

30

μA

VR_RDY Low Voltage

IVR_RDY=4mA

0.4

V

Undervoltage Threshold

VDIFF Falling

48

50

52

℅ID

VR_RDY Reset Voltage

VDIFF Rising

58

60

62

℅ID

Overvoltage Protection Threshold

Before Valid ID

1.250

1.275

1.300

V

After valid ID, the voltage above

ID

150

175

200

Mv

Overvoltage Protection Reset

Hysteresis

100

mV