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TDA5146T

Brushless DC motor drive circuit

Philips Electronics 

Philips Semiconductors

Brushless DC motor drive circuit

Product specification

TDA5146T

CHARACTERISTICS

VP = 14.5 V; Tamb = 25 °C; unless otherwise specified

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Supply

VP

IP

VVMOT

Supply voltage range

Input current range

Input voltage to the driver output

stages range

note 1

note 2

see Figure 1

4

–

18

V

–

5.9

7.5

mA

1.7

–

16

V

IVsup

Vsup current range

Vsup = 12 V

–

1.2

2.0

mA

Thermal protection

TSD

Local temperature at temperature

sensor causing shut–down

130

140

150

°C

DT

Reduction in temperature

after shut–down

–

TSD–30 –

°C

before switch–on

MOT0 – CENTER TAPE

VI

II

±VCSW

DVCS

Input voltage range

Input bias current

Comparator Switching Level

–0.5

–

VVMOT

V

0.5 V<VI <VMOT–1.5 V –10

–

–

mA

note 3

20

25

30

mV

Variation in threshold voltage be-

tween comparators

note 3

–

–

3

mV

VH

Comparator input hysteresis

MOT1, MOT2 AND MOT3

–

75

–

mV

VDO

Dropout Voltage

IO = 100 mA

IO =1000 mA

–

0.9

1.05

V

1.6

1.85

DVOL

Variation in saturation voltage be-

tween lower transistors

IO = 100 mA

–

–

180

mV

DVOH

Variation in saturation voltage be-

tween upper transistors

IO = –100 mA

–

–

180

mV

ILIM

Current limiting

VVMOT=10V

Rout=1.2W

1.8

2.0

2.5

A

Tr

Rise time switching output

VMOT=15V note 6

5

10

15

ms

TF

Fall time switching output

VMOT=15V note 6

10

15

20

ms

VDHF

Diode forward voltage (DH)

notes 4 and 5;

–

–

1.5

V

see Fig. 1;

I0 = –500 mA

VDLF

IDM

DIR

Diode forward voltage (DL)

notes 4 and 5;

–1.5

–

–

V

see Fig. 1;

I0 = 500 mA

Peak diode current

note 5

–

–

2.5

A

VIH

Normal rotation voltage on pin 5

4V< VP <18V

2.0

–

–

V

VIL

Reverse rotation voltage on pin 5

4V<VP <18V

–

–

0.8

V

IIL

Reverse rotation current

–

–20

–

mA

IIH

Normal rotation current

–

–20

–

mA

RESET

VIH

Input voltage HIGH in reset mode

4V< VP <18V

2.0

–

–

V

VIL

Input voltage LOW in normal mode 4V<VP <18V

–

–

0.8

V

IIH

Input current HIGH

VI = 2.0 V

–

–20

–

mA

IIL

Input current LOW

VI = 0.8V

–

–20

–

mA

1994 May 18

7

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