TLE4729G Infineon Technologies, TLE4729G Datasheet - Page 22

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TLE4729G

Manufacturer Part Number
TLE4729G
Description
IC STEPPER MOTOR DRVR PDSO-24-9
Manufacturer
Infineon Technologies
Type
Stepper Motor Controller/Driverr
Datasheets

Specifications of TLE4729G

Applications
Stepper Motor Driver, 2 Phase
Number Of Outputs
1
Current - Output
800mA
Voltage - Supply
5 V ~ 16 V
Operating Temperature
-40°C ~ 110°C
Mounting Type
Surface Mount
Package / Case
DSO-24
Product
Stepper Motor Controllers / Drivers
Operating Supply Voltage
5 V to 16 V
Supply Current
50 mA
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Load
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
SP000011867
SP000398988
TLE4729G
TLE4729GINTR
TLE4729GNT
TLE4729GT
TLE4729GXT

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Calculation of Power Dissipation
The total power dissipation
The following equations give the power dissipation for chopper operation without phase
reversal.
This is the worst case, because full current flows for the entire time and switching losses
occur in addition.
P
where
I
I
i
i
t
t
t
t
t
T
d
V
V
V
V
V
Data Sheet
D
R
p
ON
OFF
DON
DOFF
N
q
tot
satl
satuC
satuD
Fu
S
= 2 ×
Saturation losses
Quiescent losses
Switching losses
= Nominal current (mean value)
= Quiescent current
= Reverse current during turn-on delay
= Peak reverse current
= Conducting time of chopper transistor
= Turn-ON time
= Turn-OFF time
= Turn-ON delay
= Turn-OFF delay
= Cycle duration
= Duty cycle
= Saturation voltage of sink transistor (TX3, TX4)
= Saturation voltage of source transistor (TX1, TX2) during charge cycle
= Saturation voltage of source transistor (TX1, TX2) during discharge cycle
= Forward voltage of free-wheeling diode (DX1, DX2)
= Supply voltage
P
sat
+
P
P
P
P
q
sat
q
q
+ 2 ×
t
p
V
------ -
/
=
P
T
P
P
T
S
s
I
I
q
sat
N
q
P
i
------------------------ -
×
s
{
D
P
V
V
×
tot
satI
(transistor saturation voltage and diode forward voltages),
(quiescent current times supply voltage) and
(turn-ON / turn-OFF operations).
S
2
t
DON
is made up of
×
d
+
+
(
------------------------------------- -
V
i
D
Fu
+
22
(1 –
i
R
4
)
×
d
) +
t
ON
V
+
satuC
I
-----
2
N
(
t
×
DOFF
d
+
V
+
satuD
t
OFF
(1 –
)
TLE 4729 G
d
2005-01-17
)}

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