Three-Phase Power MOSFET Controller

A3932

6

Allegro MicroSystems, LLC

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

Parameter

Symbol

Conditions

Limits

Min

Typ

Max

Units

Bootstrap Capacitor

Bootstrap Charge Current

100

–

–

mA

Bootstrap Output Voltage

10.4

11.6

12.8

V

Bootstrap Resistance

–

9.0

12

Ω

Current Limit Circuitry

Input Offset Voltage

0 V

–

–

±5.0

mV

SENSE Input Current

–

-25

–

μA

REFERENCE Input Current

–0–

μA

Blank Time

–

0.91

–

μs

RC Charge Current

-0.9

-1.0

-1.1

mA

RC Voltage Threshold

1.0

1.1

1.2

V

2.7

3.0

3.3

V

Protection Circuitry

Bootstrap Charge Threshold

–

-9.0

–

mA

Motor Short-to-Ground Monitor

1.3

2.0

2.7

V

Undervoltage Threshold

UVLO

9.2

9.7

10.2

V

8.6

9.1

9.6

V

FAULT Output Voltage

–

–

0.5

V

TACH Output Voltage

–

–

0.5

V

TACH Output Pulse Width

–

0.75

–

μs

Thermal Shutdown Temp.

–

165

–

°C

Thermal Shutdown Hyster-

esis

–10–°C

Thermal Resistance

Package EQ Four-layer PCB

–

37

–

°C/W

Package LD Four-layer PCB

–

51

–

°C/W

NOTES:

1. Typical Data is for design information only.

2. Negative current is defined as coming out of (sourcing) the specified device terminal.