MP2930 - 4-PHASE PWM CONTROLLER WITH 8-BIT DAC CODE

MP2930 Rev. 1.01

www.MonolithicPower.com

3

10/30/2013

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© 2013 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

Parameter

Test conditions

Min

Typ

Max

Units

Nominal Supply

VCC=5VDC;

EN_PWR=5VDC;

RT=100k

Ω,

ISEN1=ISEN2=ISEN3=ISEN4=-70uA

18

26

mA

Shutdown Supply

VCC=5VDC; EN_PWR=0VDC;

RT=100

kΩ

14

21

mA

Power-on Reset and Enable

POR Threshold

VCC Rising

4.3

4.5

4.7

V

VCC Falling

3.7

3.9

4.2

V

EN_PWR Threshold

Rising

0.850

0.88

0.910

V

Hysteresis

-

130

-

mV

Falling

0.71

0.745

0.78

V

EN_VTT Threshold

Rising

0.850

0.88

0.910

V

Hysteresis

-

130

-

mV

Falling

0.71

0.745

0.78

V

Reference Voltage and DAC

System Accuracy of MP2930

(ID =1V to 1.6V, TJ=0

C to +70C)

-0.5

-

0.5

℅ID

System Accuracy of MP2930

(ID =0.5V to 1V, TJ=0

C to +70C)

-0.9

0.9

℅ID

ID Pull-Up

-60

-40

-20

μA

ID Input Low Level

-

-

0.4

V

ID Input High Level

0.8

-

-

V

VRSEL Input Low Level

-

-

0.4

V

VRSEL Input High Level

0.8

-

-

V

DAC Source Current

-

4

7

mA

DAC Sink Current

-

-

320

μA

Pin-adjustable Offset

Voltage at OFS Pin

Offset resistor connected to ground

380

400

420

mV

Voltage below VCC, offset resistor

connected to VCC

1.55

1.600

1.65

V

Oscillators

Accuracy of Switching Frequency

setting

RT=100

kΩ

225

250

275

kHz

Adjustment

Range

of

Switching

Frequency

0.08

-

1.0

MHz

Soft-Start Ramp Rate

RS=150

kΩ

-

1.563

-

mV/

μs

Adjustment

Range

of

Soft-Start

Ramp Rage

0.625

-

6.25

mV/

μs

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