SPMD250STP [STMICROELECTRONICS]
2.5 A bipolar stepper motor drive module; 2.5 A双极步进电机驱动模块
| 型号： | SPMD250STP |
| 厂家： | 
ST |
| 描述： | 2.5 A bipolar stepper motor drive module |
| 文件： | 总29页 (文件大小：1003K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SPMD250STP
2.5 A bipolar stepper motor drive module
Features
■ Wide supply voltage range
■ Full/Half step drive capability
■ Logic signals TTL/CMOS compatible
■ Programmable motor phase current and
chopper frequency
■ Selectable Slow/Fast current decay
■ Synchronization for multimotor applications
■ Remote shut-down
■ Home position indication
Description
The SPMD250STP is a drive module that directly
interface a microprocessor to a two phase,
bipolar, permanent magnet stepper motors.
The phase current is chopper controlled, and the
internal phase sequence generation reduces the
burden of the controller and it simplifies software
development. The SPMD250STP has PowerMOS
outputs to significantly reduce both commutation
and conduction losses. A further benefit offered
by the SPMD250STP is the complete protection
of the outputs against any type of shorts.
Table 1.
Device summary
Order code
SPMD250STP
January 2008
Rev 1
1/29
www.st.com
29
Contents
SPMD250STP
Contents
1
Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2
3
4
5
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Signal timing and block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Bipolar stepper motor basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.1
5.2
5.3
One-phase-on or wave drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Two-phase-on or normal drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Half step drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6
7
8
9
Phase sequence generation inside the device . . . . . . . . . . . . . . . . . . . 13
RESET, ENABLE and HOME signals . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Motor current regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
User notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
9.1
9.2
9.3
9.4
9.5
9.6
9.7
9.8
9.9
Supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Case grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Thermal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Supply line impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Module protections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Motor connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Unused inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Phase current programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Chopper frequency programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2/29
SPMD250STP
Contents
10
11
12
13
Multi modules application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Thermal operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3/29
Electrical data
SPMD250STP
1
Electrical data
1.1
Absolute maximum ratings
Table 1.
Symbol
Absolute maximum ratings
Parameter
Value
Unit
VS
DC supply voltage (pin 18)
42
7
V
V
VSS
Tstg
Tcop
DC logic supply voltage (pin 12)
Storage temperature range
– 40 to +105
– 40 to +85
°C
°C
Operating case temperature range
4/29
SPMD250STP
Electrical characteristics
2
Electrical characteristics
Table 2.
Symbol
Electrical characteristics
(T = 25°C and VS = 24V unless otherwise specified)
A
Value
Unit
Min Typ Max
Parameter
Test conditions
Vs
Vss
Is
DC supply voltage
12
40
20
V
V
DC logic supply voltage
Quiescent supply current
5
Pin 18
mA
mA
Iss
Quiescent logic supply current Pin 12 Vss = 5 V
60
V
V
Pin
Input voltage
Low
High
0.8
Vss
Vi
Ii
3,4,6,7,10,11
2
Pin
Input current
Vi = Low
Vi = High
0.6
10
mA
µA
3,4,6,7,10,11
Pin
Source/sink saturation voltage
14,15,16,17
Io = 2 A
Vsat
1.8
2.5
V
Io
IoL
fc
Phase current
A
A
Current limit intervention
Chopper frequency
5
17
kHz
µs
µs
µs
µs
µs
tclk
ts
Stepckl width
Set up time
Pin 6 (Figure 1 on page 6)
0.5
1
"
"
"
"
th
Hold time
1
tr
Reset width
1
trclk
Reset to clock set up time
1
5/29
Signal timing and block diagram
SPMD250STP
3
Signal timing and block diagram
Figure 1.
Signals timing
Figure 2.
Block diagram
6/29
SPMD250STP
Figure 3.
Signal timing and block diagram
Module typical application
SPMD250STP
7/29
Pin connection
SPMD250STP
4
Pin connection
Figure 4.
Connection diagram (top view)
8/29
SPMD250STP
Pin connection
Table 3.
Pin description
Name
N°
Function
1
GND1
Return path for the logic signals and 5 V supply.
Chopper oscillator output. Several modules can be synchronized by
connecting together all Sync pins. This pin can be used as the input for an
external clock source.
2
Sync
Asynchronous reset input. An active low pulse on this input preset the internal
logic to the initial state (ABCD = 0101).
3
4
Reset
Half/Full step selection input. When high or unconnected the half step
operation is selected.
Half/Full
When high, this output indicates that the internal counter is in its initial state
(ABCD = 0101). This signal may be used in conjunction with a mechanical
switch to ground or with open collector output of an optical detector to be used
as a system home detector.
5
Home
Stepcl
6
7
The motor is moved one step on the rising edge of this signal.
Direction control input. When high or unconnected clockwise rotation is
CW/CCW selected. Physical direction of motor rotation depends also on windings
connection.
The chopper oscillator timing, internally fixed at 17 kHz, can be modified by
connecting a resistor between this pin and Vss or a capacitor between this pin
and Gnd1. The oscillator input must be grounded when the unit is externally
8
Oscillator
synchronized.
Phase current setting input. A resistor connected between this pin and Gnd1 or
9
Ioset
Vss, allows the factory setted phase current value ( 2 A for SPMD250STP) to
be changed.
Logic input that allows the phase current decay mode selection. When high or
unconnected the slow decay is selected.
10
11
Control
Module enable input. When low this input floats the outputs enabling the
Enable manual positioning of the motor. Must be LOW during power-up and down
sequence, HIGH during normal operation.
12
13
14
15
16
17
Vss
5V supply input. Maximum voltage must not exceed 7 V.
GND2
Return path for the power section.
D
C
B
A
D output.
C output.
B output.
A output.
Module and motor supply voltage. Maximum voltage must not exceed the
specified values.
18
Vs
9/29
Bipolar stepper motor basics
SPMD250STP
5
Bipolar stepper motor basics
Simplified to the bare essentials, a bipolar permanent magnet motor consists of a rotating-
permanent magnet surrounded by stator poles carrying the windings (Figure 5).
Figure 5.
Simplified bipolar two phase motor
Bidirectional drive current is imposed on windings A-B and C-D and the motor is stepped by
commutating the voltage applied to the windings in sequence. For a motor of this type there
are three possible drive sequences.
5.1
5.2
One-phase-on or wave drive
Only one winding is energized at any given time according to the sequence :
AB - CD - BA - DC
(BA means that the current is flowing from B to A).
Fig. 6 shows the sequence for a clockwise rotation and the corresponding rotor position.
Two-phase-on or normal drive
This mode gives the highest torque since two windings are energized at any given time
according to the sequence (for clockwise rotation).
AB & CD ; CD & BA ; BA & DC ; DC & AB
Figure 7 shows the sequence and the corresponding position of the rotor.
10/29
SPMD250STP
Bipolar stepper motor basics
5.3
Half step drive
This sequence halves the effective step angle of the motor but gives a less regular torque
being one winding or two windings alternatively energized.
Eight steps are required for a complete revolution of the rotor.
The sequence is:
AB ; AB & CD ; CD ; CD & BA ; BA ; BA & DC ; DC ; DC & AB
as shown in fig. 8.
By the configurations of fig. 6, 7, 8 the motor would have a step angle of 90 ° (or 45 ° in half
step). Real motors have multiple poles pairs to reduce the step angle to a few degrees but
the number of windings (two) and the drive sequence are unchanged.
Figure 6.
One-phase-on (wave mode) drive
Figure 7.
Two-phase-on (normal mode) drive
11/29
Bipolar stepper motor basics
Figure 8. Half step sequence
SPMD250STP
12/29
SPMD250STP
Phase sequence generation inside the device
6
Phase sequence generation inside the device
The modules contains a three bit counter plus some combinational logic which generate
suitable phase sequences for half step, wave and normal full step drive. This 3 bit counter
generates a basic eight-step Gray code master sequence as shown
in fig. 9. To select this sequence, that corresponds to half step mode, the HALF/FULL input
(pin 4) must be kept high or unconnected.
The full step mode (normal and wave drive) are both obtained from the eight step master
sequence by skipping alternate states. This is achieved by forcing the step clock to bypass
the first stage of the 3 bit counter. The least significant bit of this counter is not affected and
therefore the generated sequence depends on the state of the counter when full step mode
is selected by forcing pin 4 (HALF/FULL) low. If full step is selected when the counter is at
any odd-numbered state, the twophase-on (normal mode) is implemented (see Figure 10).
On the contrary, if the full mode is selected when the counter is at an even-numbered state,
the one-phase-on (wave drive) is implemented (see Figure 11).
Figure 9.
The eight step master sequence corresponding to half step mode
13/29
Phase sequence generation inside the device
SPMD250STP
Figure 10. Two-phase-on (normal mode) drive Figure 11. One-phase-on (wave mode) drive
14/29
SPMD250STP
RESET, ENABLE and HOME signals
7
RESET, ENABLE and HOME signals
The RESET is an asynchronous reset input which restores the module to the home position
(state 1 : ABCD = 0101). Reset is active when low.
The HOME output signals this condition and it is intended to be ANDed with the output of a
mechanical home position sensor.
The ENABLE input is used to start up the module after the system initialization. ENABLE is
active when high or unconnected.
8
Motor current regulation
The two bipolar winding currents are controlled by two internal choppers in a PWM mode to
obtain good speed and torque characteristics.
An internal oscillator supplies pulses at the chopper frequency to both choppers.
When the outputs are enabled, the current through the windings raises until a peak value set
by Ioset and Rsense (see the equivalent block diagram) is reached. At this moment the
outputs are disabled and the current decays until the next oscillator pulse arrives.
The decay time of the current can be selected by the CONTROL input (pin 10). If the
CONTROL input is kept high or open the decay is slow, as shown in Figure 12, where the
equivalent power stage and the voltages on A and B are shown as well as the current
waveform on winding AB.
When the CONTROL input is forced low, the decay is fast as shown in fig. 13.
The CONTROL input is provided on SPMD250STP to allow maximum flexibility in application.
If the modules must drive a large motor that does not store much energy in the windings, the
chopper frequency must be decreased: this is easily obtained by connecting an external
capacitor between OSC pin and GND1.
In these conditions a fast decay (CONTROL LOW) would impose a low average current and
the torque could be inadequate. By selecting CONTROL HIGH, the average current is
increased thanks to the slow decay.
When the m odule is used in the fast-decay mode it is recommended to connect external
fast recovery, low drop diodes between each phase output and the supply return (GND).
The slow-decay should be the preferred operating recirculation mode because of the lower
power dissipation and low noise operations.
15/29
Motor current regulation
Figure 12. Chopper control with slow decay
SPMD250STP
drive current (Q1, Q2 ON)
– – – – recirculation current
(Q1 ON, Q2 OFF, D1 ON)
Figure 13. Chopper control with fast decay
drive current (Q1, Q2 ON)
– – – – recirculation current
(Q1, Q2 OFF, D1, D2 ON)
16/29
SPMD250STP
User notes
9
User notes
9.1
Supply voltage
The recommended operating maximum supply voltage must include the ripple voltage for
the Vs rail, and a 5 V 5 ꢀ for the Vss line is required.
The two supply voltages must to be correctly sequenced to avoid any possible erroneous
positioning of the power stages. The correct power-up and power-down sequences are:
●
Power-up
1.Vss (5 V) is applied with Enable = Low
2. Vs (the motor supply voltage) is applied
3. Enable is brougth High
Power-down
●
1.Enable is brougth Low
2. Vs is switched off
3. Vss is switched off.
9.2
9.3
Case grounding
The module case is internally connected to pin 1 and 13. To obtain additional effective EMI
shield, the PCB area below the module can be used as an effective sixth side shield.
Thermal characteristics
The case-to-ambient thermal resistance is 5 °C/W. This produces a 50 °C temperature
increase of the module surface for 10 W of internal dissipation.
According to ambient temperature and/or to power dissipation, an additional heatsink or
forced ventilation may be required. (See derating curves Figure 16).
9.4
Supply line impedance
The module has an internal capacitor connected accross the supply pins (18 and 13) to
assure the circuit stability. This capacitor cannot handle high values of current ripple, and
would be permanently damaged if the primary energy source impedance is not adequate.
The use of a low ESR, high ripple current 470 µF capacitor located as close to the module
as possible is recommended.
When space is a limitation, a 22 µF ceramic multilayer capacitor connected across the
module input pins must be used.
17/29
User notes
SPMD250STP
9.5
Module protections
The SPMD250STP outputs are protected against short circuits to Gnd, Vs and to another
output. When the current exceeds the maximum value, the output is automatically disabled.
The module protection is of the latching type, i.e. when an overload condition is detected the
unit outputs are disabled. To restart the operations it is necessary to disable the unit
(pin 11 = Low) or to switch off the supply voltage for at least 100 ms.
9.6
Motor connection
The motor is normally quite far from the module and long cables are needed for connection.
The use of a twisted pair cable with appropriate cross section for each motor phase is
recommended to minimize DC losses and RFI problems.
9.7
9.8
Unused inputs
All the SPMD250STP logic inputs have an internal pull-up, and they are high when
unconnected.
Phase current programming
The output current is factory set to a standard 2 A value.
The phase current value can be changed by connecting an appropriate resistor between pin
9 and ground or Vss (see Figure 14). In the first case the phase current will decrease, in the
latter it will increase.
The maximum phase current must be limited to 2.5 A, to avoid permanent damage to the
module.
SPMD250STP phase current programming:
Equation 1
10 – 0.33 ⋅ I
0.473 ⋅ I – 1
-----------------------------
I > 2A
Ri =
= kΩ
Ri ≥ 50kΩ
Equation 2
I
----------------------------------
I < 2A
Rd =
= kΩ
3.03 – 1.43 ⋅ I
18/29
SPMD250STP
Figure 14. Phase current programming
User notes
12
12
9
9
SPMD250STP
SPMD250STP
1
1
9.9
Chopper frequency programming
The chopper frequency is internally set to 17 kHz, and it can be changed by addition of
external components as follows. To increase the chopper frequency a resistor must be
connected between Oscillator (pin 8) and Vss (pin 12, see Figure 15). The resistor value is
calculated according to the formula:
Equation 3
306
fc–17
--------------
Rf =
= kΩ
where
fc = kHz
Rf ≥ 18kΩ
To decrease the chopper frequency a capacitor must be connected between Oscillator (pin
8) and Gnd1 (pin 1). The capacitor value is calculated according to the formula:
Equation 4
80.5 – 4.7fc
------------------------------
Cf =
= nF
where
fc = kHz
fc
19/29
User notes
SPMD250STP
Figure 15. Chopper frequency programming
12
12
osc
osc
8
SPMD250STP
8
SPMD250STP
1
1
f
C < 17 KHz
f
C > 17 KHz
Figure 16. Free air derating curve
Tamb (°C)
20/29
SPMD250STP
Multi modules application
10
Multi modules application
In complex systems, many motors must be controlled and driven. In such a case more than
one SPMD250STP must be used.
To avoid chopper frequencies noise and beats, all the modules should be synchronized.
If all the motors are relatively small, the fast decay may be used, the chopper frequency
does not need any adjustement and Figure 17 shows how to synchronize several modules.
When at least one motor is relatively large a lower chopper frequency and a slow decay may
be required: In such a case the overall system chopper frequency is determined by the
largest motor in the system as shown in Figure 18.
Figure 17. Multimotor synchronization, small motor and fast current decay
SPMD250STP
SPMD250STP
SPMD250STP
21/29
Multi modules application
SPMD250STP
Figure 18. Multimotor synchronization, large and small motor, slow current decay
SPMD250STP
SPMD250STP
22/29
SPMD250STP
Thermal operating conditions
11
Thermal operating conditions
In many cases the modules do not require any additional cooling because the dimensions
and the shape of the metal box are studied to offer the minimum possible thermal resistance
case-to-ambient for a given volume.
It should be remembered that these modules are a power device and, depending on
ambient temperature, an additional heath-sink or forced ventilation or both may be required
to keep the unit within safe temperature range. (Tcasemax < 85 °C during operation).
The concept of maximum operating ambient temperature is totally meaningless when
dealing with power components because the maximum operating ambient temperature
depends on how a power device is used.
What can be unambiguously defined is the case temperature of the module.
To calculate the maximum case temperature of the module in a particular applicative
environment the designer must know the following data:
●
●
●
●
Input voltage
Motor phase current
Motor phase resistance
Maximum ambient temperature
From these data it is easy to determine whether an additional heath-sink is required or not,
and the relevant size i.e. the thermal resistance.
The step by step calculation is shown for the following example.
Vin = 40 V, Iphase = 1 A, Rph Phase resistance = 10 Ω, max. T = 50 °C
A
●
Calculate the power dissipated from the indexer logic and the level shifter (see
electrical characteristics):
Plogic = (5 V x 60 mA) + (40 V x 20 mA) = 1.1 W
Calculate the average voltage across the winding resistance:
Vout = (Rph x Iout) = 10Ω ζ 1A = 10 V
Calculate the required ON duty cycle (D.C.) of the output stage to obtain the average
voltage (this D.C. is automatically adjusted by the SPMD250STP):
●
●
VOUT
DC= -------------- = ------ = 0.25
VIN 40
10
●
Calculate the power dissipation of the SPMD250STP output power stage. The power
dissipation depends on two main factors:
–
–
the selected operating mode (FAST or SLOW DECAY)
the selected drive sequence (WAVE, NORMAL, HALF STEP)
FAST DECAY. For this mode of operation, the internal voltage drop is Vsatsource + Vsatsink
during the ON period i.e. for 25 ꢀ of the time.
During the recirculation period (75 ꢀ of the time), the current recirculates on two internal
diodes that have a voltage drop Vd = 1 V, and the internal sense resistor (0.5 Ω). For this
example, by assuming maximum values for conservative calculations, the power dissipation
during one cycle is:
Ppw = 1.1 x [2 Vsat x Iph x D.C. + 2 Vd x Iph x (1 - D.C.) + 0.5 x Iph]
23/29
Thermal operating conditions
SPMD250STP
Ppw = 1.1 x [2x1.8x1x0.25+2x1x1x0.75 + 0.5 x1]
Ppw = 1.1 x [0.9 + 1.5 + 0.5] = 3.19 W
The factor 1.1 takes into account the power dissipation during the switching transient.
SLOW DECAY. The power dissipation during the ON period is the same. The
RECIRCULATION is made internally through a power transistor (Vsatsink) and a diode. The
power dissipation is, therefore:
Ppw = 1.1x [2 Vsat x Iph x D.C.+(Vsat+Vd) x Iph x (1-D.C.)]
Ppw = 1.1x [2 x 1.8 x 1 x 0.25 + (1.8 + 1) x 1 x 0.75]
Ppw = 1.1 x [0.9 + 2.1] = 3.3 W
WAVE MODE. When operating in this mode the power dissipation is given by values of
FAST and SLOW DECAY mode, because one phase is energized at any given time.
NORMAL MODE. At any given time, two windings are always energized. The power
dissipation of the power output stage is therefore multiplied by a factor 2.
HALF STEP. The power sequence, one-phase-on, two-phase-on forces the power
dissipation to be 1.5 times higher than in WAVE MODE when the motor is running. In stall
condition the worst case for power dissipation is with two-phase-on i.e. a power dissipation
as in NORMAL MODE.
The following table summarizes the power dissipations of the output power stage of the
SPMD250STP when running for this example:
Table 4.
Power dissipations
Wave
Normal
Half Step
Fast Decay
Slow Decay
3.19 W
3.30 W
6.38 W
6.60 W
6.38 W
6.60 W
●
Calculate the total power dissipation for the SPMD250STP :
Ptot = Plogic + Ppw
In this example, for slow decay and normal mode
Ptot = 1.1 + 6.6 = 7.7 W
●
The case temperature can now be calculated:
Tcase = Tamb + (Ptot x Rth) = 55 + (7.7 x 5) = 93.5 °C
●
If the calculated case temperature exceeds the maximum allowed case temperature, as
in this example, an external heat-sink is required and the thermal resistance can be
calculated according to:
Equation 5
T
cmax – Tamb
Rthtot = ----------------------------------- = ------------------ = 3.9°C
Ptot 7.7
85 – 55
24/29
SPMD250STP
Equation 6
Thermal operating conditions
Rth ⋅ Rth
5 ⋅ 3.9
Rthhs = --------------------------- = ----------------- = 17.7°C
tot
R
th – Rth 5 – 3.9
tot
The following table gives the thermal resistance of some commercially available heath-sinks
that fit on the SPMD250STP module.
Table 5.
Thermal resistance
Manufacturer
Part number
Rth (°C/W)
Mounting
Thermalloy
Thermalloy
Thermalloy
Fischer
6177
6152
3
4
Horizontal
Vertical
6111
10
3
Vertical
SK18
V5440
V5382
Vertical
Assman
4
Vertical
Assman
4
Horizontal
25/29
Package mechanical data
SPMD250STP
12
Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a Lead-free second level interconnect . The category of
second level interconnect is marked on the package and on the inner box label, in
compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an ST trademark.
ECOPACK specifications are available at: www.st.com
26/29
SPMD250STP
Figure 19. Mechanical data
Package mechanical data
0.5 (0.02)
20.5 (0.81)
18.5 (0.73)
85.5 (3.37)
2.2 (0.87)
2.54 (0.1)
29.5
18.4
(1.16)
(0.72)
5.04 (0.2)
5.04 (0.2)
2.54 (0.1)
2.54 (0.1)
5.04 (0.2)
23.0
(0.90)
1.2 (0.47)
2.2 (0.87)
66.67 (2.62)
78.5 (3.09)
4 (0.16)
7 (0.28)
82.3 (3.24)
Dimensions in mm
Figure 20. Mother board layout
27/29
Revision history
SPMD250STP
13
Revision history
Table 6.
Date
23-Jan-2007
Document revision history
Revision
Changes
1
First release
28/29
SPMD250STP
Please Read Carefully:
Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the
right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any
time, without notice.
All ST products are sold pursuant to ST’s terms and conditions of sale.
Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no
liability whatsoever relating to the choice, selection or use of the ST products and services described herein.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this
document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products
or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such
third party products or services or any intellectual property contained therein.
UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED
WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS
OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT
RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING
APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY,
DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE
GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN RISK.
Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void
any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any
liability of ST.
ST and the ST logo are trademarks or registered trademarks of ST in various countries.
Information in this document supersedes and replaces all information previously supplied.
The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners.
© 2008 STMicroelectronics - All rights reserved
STMicroelectronics group of companies
Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -
Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America
www.st.com
29/29
相关型号：
SPMF50A500
Power Field-Effect Transistor, 50A I(D), 500V, 0.1ohm, 2-Element, N-Channel, Silicon, Metal-oxide Semiconductor FET, PLASTIC, MODULE-8
VISHAY
SPMPT-10CE3TR
Trans Voltage Suppressor Diode, 1500W, 10V V(RWM), Bidirectional, 1 Element, Silicon, DO-202AA, ROHS COMPLIANT, HERMETIC SEALED, METAL, DO-13, 2 PIN
MICROSEMI
SPMPT-10E3
Trans Voltage Suppressor Diode, 1500W, 10V V(RWM), Unidirectional, 1 Element, Silicon, DO-202AA, ROHS COMPLIANT, HERMETIC SEALED, METAL, DO-13, 2 PIN
MICROSEMI
SPMPT-10E3TR
Trans Voltage Suppressor Diode, 1500W, 10V V(RWM), Unidirectional, 1 Element, Silicon, DO-202AA, ROHS COMPLIANT, HERMETIC SEALED, METAL, DO-13, 2 PIN
MICROSEMI
SPMPT-10TR
Trans Voltage Suppressor Diode, 1500W, 10V V(RWM), Unidirectional, 1 Element, Silicon, DO-202AA, HERMETIC SEALED, METAL, DO-13, 2 PIN
MICROSEMI
SPMPT-12CE3
Trans Voltage Suppressor Diode, 1500W, 12V V(RWM), Bidirectional, 1 Element, Silicon, DO-202AA, ROHS COMPLIANT, HERMETIC SEALED, METAL, DO-13, 2 PIN
MICROSEMI
SPMPT-12CE3TR
Trans Voltage Suppressor Diode, 1500W, 12V V(RWM), Bidirectional, 1 Element, Silicon, DO-202AA, ROHS COMPLIANT, HERMETIC SEALED, METAL, DO-13, 2 PIN
MICROSEMI
SPMPT-15
Trans Voltage Suppressor Diode, 1500W, 15V V(RWM), Unidirectional, 1 Element, Silicon, DO-202AA, HERMETIC SEALED, METAL, DO-13, 2 PIN
MICROSEMI
SPMPT-15C
Trans Voltage Suppressor Diode, 1500W, 15V V(RWM), Bidirectional, 1 Element, Silicon, DO-202AA, HERMETIC SEALED, METAL, DO-13, 2 PIN
MICROSEMI
SPMPT-15CE3
Trans Voltage Suppressor Diode, 1500W, 15V V(RWM), Bidirectional, 1 Element, Silicon, DO-202AA, ROHS COMPLIANT, HERMETIC SEALED, METAL, DO-13, 2 PIN
MICROSEMI
SPMPT-15E3
Trans Voltage Suppressor Diode, 1500W, 15V V(RWM), Unidirectional, 1 Element, Silicon, DO-202AA, ROHS COMPLIANT, HERMETIC SEALED, METAL, DO-13, 2 PIN
MICROSEMI
©2020 ICPDF网 联系我们和版权申明