6-13

HIP4011

Functional Block Diagram

FREEWHEEL DIODES

Forward Drop

-

-

1.5

V

INTERNAL BRAKE DRIVER

Undervoltage Trip Point, PV+

(See Note 3)

2.7

-

3.3

V

Hysteresis

(See Note 4)

40

-

60

%

On Saturation

-

-

0.4

V

BRAKE CAPACITOR (BCAP)

Discharge Leakage

SV+ = PV+ = 3V to 12V, BCAP = 10V

-

-

5

µA

NOTES:

1. The system bandwidth is fixed by an internal RC network around the amplifier.

2. Internal limiting of turn on and turn off drive is used to limit output dv/dt.

3. The braking action starts at the given trip point with a falling supply voltage.

4. Hysteresis causes the brake to be removed at a higher trip point with a rising supply voltage.

5. This value includes the combined voltage drops of one upper plus one lower switch at the indicated current.

Electrical Specifications

PARAMETERS

TEST CONDITION

MIN

TYP

MAX

UNITS

SENA

1

HALL

SENSOR

A

SENB

2

HALL

SENSOR

B

SENC

3

HALL

SENSOR

C

FBRK

6

FORCE

BRAKE

13

SIGNAL

V+

1mA

V+

V+

1mA

1mA

BREAK

BEFORE

MAKE

THERMAL

SENSING

DECODE

LOGIC

WITH

ILLEGAL

CODE

REJECTION

100

µA

V+

VBS (BRAKE

(SENSE REF)

CURRENT

SENSE

RESISTOR

(CURRENT LIMITING

REF)

CURRENT

LIMITING

+

-

V+

BCAP

10

4 PV+

OUTA

11

OUTB

8

9 PV+

BRAKE

CAP.

POWER V+

MOTOR

φA

MOTOR

φC

MOTOR

φB

OUTC

5

ISEN

12

ISEN

7

IREF

14

SIGNAL

GND

15

SGND

PGND

TAB

SUBSTRATE

GND

39K

39K

100pF

38.5K

1K 1K