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PDF TLE5250 Data sheet ( Hoja de datos )
| Número de pieza | TLE5250 | |
| Descripción | 2.5-A High Performance Smart Power Stepper-Motor Driver with Diagnostic Interface | |
| Fabricantes | Siemens Semiconductor Group | |
| Logotipo |  |
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2.5-A High Performance Smart Power
Stepper-Motor Driver with Diagnostic Interface
TLE 5250
Overview
Features
• Single phase driver for stepper motor 2.5 A
• Low ON-resistance (typical 0.3 Ω)
• Wide supply range 6 V to 45 V
• Wide current range 10 mA to 3 A
• Fast nominal/actual comparator for micro
stepper mode
• Wide temperature range
• Short circuit protection
• Under voltage shutdown
• Overtemperature shutdown
• Serial diagnostic interface
• Fast freewheeling diodes
• TTL-compatible inputs
SPT-IC
P-SIP-15-1
Type
TLE 5250
Ordering Code
Q67000-A9103
Package
P-SIP-15-1
Description
TLE 5250 is a monolithic IC in Smart Power technology for controlling and regulating the
motor current in one phase of a bipolar stepping motor. There are other applications in
driving DC motors and inductive loads that are operated on constant current.
The device has TTL-compatible logic inputs, includes a H-bridge with integrated, fast
free-wheeling diodes plus dynamic limiting of the motor current by a chopper mode. The
nominal current can be set continuously by a control voltage. Microstep mode can be
produced by applying a sinusoidal control voltage. Two TLE 5250s, with a minimum of
external circuitry and a single supply voltage, form a complete system - that can be
driven direct by an MC- for two-phase, bipolar stepping motors with output current of up
to 2.5 A per phase. The outputs of the IC are internally protected against shorted to
ground, supply voltage and shorted load. The output stages are also disabled by
undervoltage and overtemperature. All fault functions can be detected by the internal
diagnostics, which can be read out serially.
Semiconductor Group
1
1998-02-01
1 page  
TLE 5250
Application
Two TLE 5250 drivers are required to operate a bipolar stepping motor. To implement
full-step operation, a squarewave voltage with the required stepping frequency is applied
to the phase input of the upper driver, and the same squarewave voltage, but offset in
phase by 90°el, to the phase input of the lower driver. Motor-current limiting is produced
by a DC signal that is applied to both nominal-current inputs. In microstep operation the
nominal current tracks sinusoidally and synchronously with the required stepping
frequency. This produces a sinusoidal current in the motor windings to ensure very
smooth running and a high stepping frequency. If an instantaneous nominal value (sine
or cosine) is held on the second driver, it is possible to set a certain angle of rotation while
the motor is stationary. The motor current produced by this depends on nominal voltage
and sense resistance (normally 0.5 Ω), i.e.
IM[V] = V---R--n---oS--m-[---Ω-[--V--]---]
The actual voltage should be thoroughly filtered for precise current regulation, especially
in microstep operation. So the actual input is accessible, and an RC element is
necessary between the Sense output and Actual input. The resistance RR should
correspond to the internal resistance of the nominal-current input-voltage source to
prevent additional voltage offset on the nominal/actual comparator.
Circuit Description
Outputs
Outputs Q1 and Q2 are fed by push-pull output stages. Four integrated free-wheeling
diodes referred to ground or the supply voltage protect the integrated circuit against
reverse voltages from an inductive load.
Enable and Phase
Outputs Q1 and Q2 can be disabled by a voltage VInh of ≤ 0.8 V on the Enable pin. The
sink transistors are enabled by VInh ≥ 2 V.
The voltage on the Phase input determines the phase of the output current. Output Q1
acts as a sink for VPh ≤ 0.8 V and as a source for VPh ≥ 2 V.
For output Q2 this is reversed: sink for VPh ≥ 2 V and source for VPh ≤ 0.8 V.
The sink transistors are chopped. Low signal on the Enable pin plus a clock signal on the
Phase pin enable readout of the multiplexer.
Semiconductor Group
5
1998-02-01
5 Page 
TLE 5250
Overcurrent Flag
Q1 Low Status
Q2 Low Status
Q1 High Status
Q2 High Status
& SQ
RQ
&
SQ
RQ
& SQ
RQ
& SQ
RQ
GOn T3
&
SQ
<_1 GOn Status
RQ
GOn T4
& SQ
Nom/Act Stat. Act>Nom->High
RQ
& SQ
Overcurrent T1/T2 Status
Undervoltage Status
RQ
&
SQ
<_1 R Q
& SQ
Overtemperature Status
RQ
& SQ
Monoflop Strobe
RQ
Latch
Enable
Phase
Monoflop Reset
Error Status
Continuous
0
Check Bit Low
1
M
U
X
Q1 Low Status
Continuous
2
Q2 Low Status
Continuous
3
C
h
a
n
n
e
l
Q1 High Status
Continuous
4
Q2 High Status
Continuous
5
Q1 Low Status
Strobed
6
Q2 Low Status
Q
Strobed
7
MUX
Q1 High Status 16-to-1
Strobed
8
Q2 High Status
Strobed
Sequential
Multiplexer
9
Gon Status
Strobed
10
Gon Status
Latched
11
Actual Current up
to Nominal Latched
12
Overcurrent T1/T2
Latched
13
Undervoltage
Latched
14
Overtemperature
Latched
15
Reset Clock
Diagn. Pin
AES01470
Figure 5 Diagnostics Logic
Semiconductor Group
11
1998-02-01
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet TLE5250.PDF ] | |
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