POWER DRIVER FOR STEPPER MOTORS INTEGRATED CIRCUITS TMC262 DATASHEET Universal, cost-effective stepper driver for two-phase bipolar motors with state-of-the-art features. External MOSFETs fit different motor sizes. With Step/Dir Interface and SPI.
TMC262 DATASHEET (V2.14 / 2016-JUL-14) 2 APPLICATION EXAMPLES: HIGH POWER – SMALL SIZE The TMC262 scores with its high power density and a versatility that covers a wide spectrum of applications and motor sizes, all while keeping costs down. Extensive support at the chip, board, and software levels enables rapid design cycles and fast time-to-market with competitive products.
TMC262 DATASHEET (V2.14 / 2016-JUL-14) 3 TABLE OF CONTENTS 1 PRINCIPLES OF OPERATION ......................... 4 1.1 1.2 1.3 1.4 2 KEY CONCEPTS ............................................... 4 CONTROL INTERFACES .................................... 5 MECHANICAL LOAD SENSING ......................... 5 CURRENT CONTROL ........................................ 5 PIN ASSIGNMENTS ........................................... 6 2.1 2.2 PACKAGE OUTLINE .........................................
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 1 4 Principles of Operation 0A+ High-Level Interface µC S/D MOSFET TMC262 Driver Stage SPI High-Level Interface µC SPI S N 0B+ 0B- 0A+ TMC429 Motion Controller for up to 3 Motors 0A- S/D TMC262 MOSFET Driver Stage 0A- S N 0B+ 0B- SPI Figure 1.1 Applications block diagrams The TMC262 motor driver is the intelligence between a motion controller and the power MOSFETs for driving a two-phase stepper motor, as shown in Figure 1.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 5 In addition to these performance enhancements, TRINAMIC motor drivers also offer safeguards to detect and protect against shorted outputs, open-circuit output, overtemperature, and undervoltage conditions for enhancing safety and recovery from equipment malfunctions. 1.2 Control Interfaces There are two control interfaces from the motion controller to the motor driver: the SPI serial interface and the STEP/DIR interface.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 2 6 Pin Assignments TST_ANA VS 7 14 15 16 CSN ENN CLK SDI 13 GND SDO 12 SCK 11 5VOUT 8 10 24 SG_TST 6 9 23 GNDP TMC 262-LA VHS HB1 22 VCC_IO 25 HB2 21 DIR 26 BMB2 20 STEP 27 5 SRA 28 BMB1 19 4 LA2 29 LB1 18 3 BMA2 LA1 30 LB2 17 HA2 BMA1 31 2 HA1 32 1 GND TST_MODE 2.1 Package Outline SRB Top view Figure 2.1 TMC262 pin assignments 2.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) Pin SDI Number 11 Type DI VIO SCK 12 DI VIO CSN ENN CLK 14 15 16 DI VIO DI VIO DI VIO VHS VS TST_ANA SG_TST GNDP VCC_IO 24 25 26 27 28 29 AO VIO DO VIO DIR 30 DI VIO STEP TST_MODE 31 32 DI VIO DI VIO www.trinamic.com Function Data input of SPI interface (Scan test input in test mode) Serial clock input of SPI interface (Scan test shift enable input in test mode) Chip select input of SPI interface Enable not input for drivers.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 3 8 Internal Architecture Figure 3.1 shows the internal architecture of the TMC262. +VM 9-59V VHS 220n 16V 100n VS TMC262 +VCC VCC_IO 3.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 4 9 stallGuard2 Load Measurement stallGuard2 provides an accurate measurement of the load on the motor. It can be used for stall detection as well as other uses at loads below those which stall the motor, such as coolStep loadadaptive current reduction. (stallGuard2 is a more precise evolution of the earlier stallGuard technology.) The stallGuard2 measurement value changes linearly over a wide range of load, velocity, and current settings, as shown in Figure 4.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) Status word SG Description 10-bit unsigned integer stallGuard2 measurement value. A higher value indicates lower mechanical load. A lower value indicates a higher load and therefore a higher load angle. For stall detection, adjust SGT to return an SG value of 0 or slightly higher upon maximum motor load before stall. 10 Range 0… 1023 Comment 0: highest load low value: high load high value: less load 4.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) stallGuard2 reading at no load optimum SGT setting simplified SGT setting 1000 20 900 18 800 16 700 14 600 12 500 10 400 8 300 6 200 4 100 2 0 0 50 lower limit for stall detection 4 RPM 100 150 11 200 250 300 350 400 450 back EMF reaches supply voltage 500 550 600 Motor RPM (200 FS motor) Figure 4.2 Linear interpolation for optimizing SGT with changes in velocity 4.1.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 12 4.3 Detecting a Motor Stall To safely detect a motor stall, a stall threshold must be determined using a specific SGT setting. Therefore, you need to determine the maximum load the motor can drive without stalling and to monitor the SG value at this load, for example some value within the range 0 to 400. The stall threshold should be a value safely within the operating limits, to allow for parameter stray.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 5 13 coolStep Load-Adaptive Current Control coolStep allows substantial energy savings, especially for motors which see varying loads or operate at a high duty cycle. Because a stepper motor application needs to work with a torque reserve of 30% to 50%, even a constant-load application allows significant energy savings because coolStep automatically enables torque reserve when required.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 14 mechanical load stallGuard2 reading motor current increases the current. When the load decreases and SG rises above (SEMIN + SEMAX + 1) x 32 the current becomes reduced.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 15 5.1 Tuning coolStep Before tuning coolStep, first tune the stallGuard2 threshold level SGT, which affects the range of the load measurement value SG. coolStep uses SG to operate the motor near the optimum load angle of +90°. The current increment speed is specified in SEUP, and the current decrement speed is specified in SEDN. They can be tuned separately because they are triggered by different events that may need different responses.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 6 16 SPI Interface The TMC262 requires setting configuration parameters and mode bits through the SPI interface before the motor can be driven. The SPI interface also allows reading back status values and bits. 6.1 Bus Signals The SPI bus on the TMC262 has four signals: SCK SDI SDO CSN bus clock input serial data input serial data output chip select input (active low) The slave is enabled for an SPI transaction by a low on the chip select input CSN.
TMC262 DATASHEET (Rev. 2.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 18 Figure 6.2 shows the interfaces in a typical application. The SPI bus is used by an embedded MCU to initialize the control registers of both a motion controller and one or more motor drivers. STEP/DIR interfaces are used between the motion controller and the motor drivers. 6.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 19 6.4.2 Read Response Overview The table below shows the formats for the read response. The RDSEL parameter in the DRVCONF register selects the format of the read response. Bit RDSEL=%00 RDSEL=%01 RDSEL=%10 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MSTEP9 MSTEP8 MSTEP7 MSTEP6 MSTEP5 MSTEP4 MSTEP3 MSTEP2 MSTEP1 MSTEP0 STST OLB OLA S2GB S2GA OTPW OT SG SG9 SG8 SG7 SG6 SG5 SG4 SG3 SG2 SG1 SG0 - SG9 SG8 SG7 SG6 SG5 SE4 SE3 SE2 SE1 SE0 - 6.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 20 DRVCTRL Driver Control in SPI Mode (SDOFF=1) Bit 8 Name PHB Function Polarity B CB7 CB6 CB5 CB4 CB3 CB2 CB1 CB0 Current B MSB 7 6 5 4 3 2 1 0 Comment Sign of current flow through coil B: 0: Current flows from OB1 pins to OB2 pins. 1: Current flows from OB2 pins to OB1 pins. Magnitude of current flow through coil B. The range is 0 to 248, if hysteresis or offset are used up to their full extent.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 21 6.6 Chopper Control Register (CHOPCONF) CHOPCONF Chopper Configuration Bit 19 18 17 16 15 Name 1 0 0 TBL1 TBL0 Function Register address bit Register address bit Register address bit Blanking time CHM Chopper mode 14 Comment Blanking time interval, in system clock periods: %00: 16 %01: 24 %10: 36 %11: 54 This mode bit affects the interpretation of the HDEC, HEND, and HSTRT parameters shown below.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) CHOPCONF Chopper Configuration Bit 3 2 1 0 Function Off time/MOSFET disable Name TOFF3 TOFF2 TOFF1 TOFF0 22 Comment Duration of slow decay phase. If TOFF is 0, the MOSFETs are shut off. If TOFF is nonzero, slow decay time is a multiple of system clock periods: NCLK= 12 + (32 x TOFF) (Minimum time is 64clocks.) %0000: Driver disable, all bridges off %0001: 1 (use with TBL of minimum 24 clocks) %0010 … %1111: 2 … 15 6.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 23 6.8 stallGuard2 Control Register (SGCSCONF) SGCSCONF stallGuard2™ and Current Setting Bit 19 18 17 16 Name 1 1 0 SFILT Function Register address bit Register address bit Register address bit stallGuard2 filter enable 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 0 SGT6 SGT5 SGT4 SGT3 SGT2 SGT1 SGT0 0 0 0 CS4 CS3 CS2 CS1 CS0 Reserved stallGuard2 threshold value www.trinamic.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 24 6.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 25 6.10 Read Response For every write command sent to the motor driver, a 20-bit response is returned to the motion controller. The response has one of three formats, as selected by the RDSEL parameter in the DRVCONF register. The table below shows these formats. Software must not depend on the value of any bit shown as reserved.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 26 6.11 Device Initialization The following sequence of SPI commands is an example of enabling the driver and initializing the chopper: SPI = $901B4; // Hysteresis mode SPI = $94557; // Constant toff mode SPI = $D001F; // Current setting: $d001F (max.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 7 27 STEP/DIR Interface The STEP and DIR inputs provide a simple, standard interface compatible with many existing motion controllers. The microPlyer STEP pulse interpolator brings the smooth motor operation of highresolution microstepping to applications originally designed for coarser stepping and reduces pulse bandwidth. 7.1 Timing Figure 7.1 shows the timing parameters for the STEP and DIR signals, and the table below gives their specifications.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 28 7.2 Microstep Table The internal microstep table maps the sine function from 0° to 90°, and symmetries allow mapping the sine and cosine functions from 0° to 360° with this table. The angle is encoded as a 10-bit unsigned integer MSTEP provided by the microstep counter. The size of the increment applied to the counter while microstepping through this table is controlled by the microstep resolution setting MRES in the DRVCTRL register.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 29 7.3 Changing Resolution The application may need to change the microstepping resolution to get the best performance from the motor. For example, high-resolution microstepping may be used for precision operations on a workpiece, and then fullstepping may be used for maximum torque at maximum velocity to advance to the next workpiece.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 30 In Figure 7.3, the first STEP cycle is long enough to set the STST bit. This bit is cleared on the next STEP active edge. Then, the STEP frequency increases and after one cycle at the higher rate microPlyer increases the interpolated microstep rate. During the last cycle at the slower rate, microPlyer did not generate all 16 microsteps, so there is a small jump in motor angle between the first and second cycles at the higher rate. 7.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 8 31 Current Setting The internal 5V supply voltage available at the pin 5VOUT is used as a reference for the coil current regulation based on the sense resistor voltage measurement. The desired maximum motor current is set by selecting an appropriate value for the sense resistor. The sense resistor voltage range can be selected by the VSENSE bit in the DRVCONF register.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 32 8.1 Sense Resistors Sense resistors should be carefully selected. The full motor current flows through the sense resistors. They also see the switching spikes from the MOSFET bridges. A low-inductance type such as film or composition resistors is required to prevent spikes causing ringing on the sense voltage inputs leading to unstable measurement results. A low-inductance, low-resistance PCB layout is essential.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 9 33 Chopper Operation The currents through both motor coils are controlled using choppers. The choppers work independently of each other. Figure 9.1 shows the three chopper phases: +VM +VM +VM ICOIL ICOIL ICOIL RSENSE RSENSE On Phase: current flows in direction of target current Fast Decay Phase: current flows in opposite direction of target current RSENSE Slow Decay Phase: current re-circulation Figure 9.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) Parameter TBL CHM 34 Description Blanking time. This time needs to cover the switching event and the duration of the ringing on the sense resistor. For most low-current applications, a setting of 16 or 24 is good. For high-current applications, a setting of 36 or 54 may be required.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 35 An Excel spreadsheet is provided for performing these calculations. As experiments show, the setting is quite independent of the motor, because higher current motors typically also have a lower coil resistance. Choosing a medium default value for the hysteresis (for example, effective HSTRT+HEND=10) normally fits most applications.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) Parameter HDEC 36 Description Setting Hysteresis decrement setting. This setting 0… 3 determines the slope of the hysteresis during on time and during fast decay time. It sets the number of system clocks for each decrement. Comment 0: fast decrement 3: very slow decrement %00: 16 %01: 32 %10: 48 %11: 64 Example: In the example above, a hysteresis start of 7 has been chosen. The hysteresis end is set to about half of this value, 3.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 37 Three parameters control constant off-time mode: Parameter TFD (HSTART & HDEC0) OFFSET (HEND) NCCFD (HDEC1) Description Fast decay time setting. With CHM=1, these bits control the portion of fast decay for each chopper cycle. Sine wave offset. With CHM=1, these bits control the sine wave offset. A positive offset corrects for zero crossing error. Selects usage of the current comparator for termination of the fast decay cycle.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 38 10 Power MOSFET Stage The TMC262 provides gate drivers for two full-bridges using N- and P-channel power MOSFETs. The gate current for the MOSFETs can be adapted to influence the slew rate at the coil outputs. The main features of the stage are: - 5V gate drive voltage for low-side N-MOS transistors, 8V for high-side P-MOS transistors.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 39 10.3 Slope Control The TMC262 provides constant-current gate drivers for slope control. This allows adapting the driver strength to the drive requirements of the power MOSFETs and adjusting the output slope of the controlled gate charge and discharge. A slower slope reduces electromagnetic emissions, but it increases power dissipation in the MOSFETs. The duration of the complete switching event depends on the total gate charge of the MOSFETs. In Figure 10.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 40 11 Diagnostics and Protection 11.1 Short to GND Detection The short to ground detection prevents the high-side power MOSFETs from being damaged by accidentally shorting the motor outputs to ground. It disables the MOSFETs only if a short condition persists. A temporary event like an ESD event could look like a short, but these events are filtered out by requiring the event to persist.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 41 The short to ground detector is controlled by a mode bit and a parameter: Mode bit / Parameter DISS2G Description Setting Comment Short to ground detection disable bit. 0/1 TS2G This setting controls the short to GND detection 0… 3 delay time. It needs to cover the switching slope time. A higher setting reduces sensitivity to capacitive loads. 0: Short to ground detection enabled. 1: Short to ground detection disabled. %00: 3.2µs. %01: 1.6µs. %10: 1.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) Status OTPW 42 Description Range Overtemperature warning. This bit indicates 0 / 1 whether the warning threshold is reached. Software can react to this setting by reducing current. Overtemperature shutdown. This bit indicates 0 / 1 whether the shutdown threshold has been reached and the driver has been disabled. OT Comment 1: temperature prewarning level reached 1: driver shut down due to overtemperature 11.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 43 12 Power Supply Sequencing The TMC262 generates its own 5V supply for all internal operations. The internal reset of the chip is derived from the supply voltage regulator in order to ensure a clean start-up of the device after power up. During start up, the SPI unit is in reset and cannot be addressed. All registers become cleared.
VVCC_IO VCLK 3.3V/5V VINHI CLK must be low, while VCC_IO is below VINHI TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 44 Defined clock, no intermediate levels allowed max. VCC_IO VVS VUV Device in reset: all registers cleared to 0 Operation, CLK is not allowed to have undefined levels between VINLO and VINHI and timing must satisfy TCLK (min) Time Device in reset: all registers cleared to 0 Figure 13.1 Start-up requirements of CLK input 13.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 45 14 MOSFET Examples There are a many of N- and P-channel paired MOSFETs available suitable for the TMC262, as well as single N- and P-devices. The important considerations are the electrical data (voltage, current, RDSon), package, and configuration (single vs. dual). The following table shows a few examples of SMD MOSFET pairs for different motor voltages and currents. These MOSFETs are recent types with a low total gate charge.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 46 15 External Power Stage The TMC262 uses a completely complementary driving scheme for the power MOSFETs. This allows using the low-side gate driver outputs to control external gate drivers for the power MOSFETs. In this case, the external gate driver must provide the break-before-make function. You can directly connect gate driver chips like the TMC603 as gate drivers for high-current NMOS transistor bridges.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 47 +VM 100n 100n 16V VHS +VCC VCC_IO 3.3V or 5V TMC262 5VOUT +10V 470nF D 100n 8-20MHz 470pF CLK Attention: High side capacitors would discharge at 100% duty cycle within a few seconds. Disable driver if open load occurs in stand still. optional capacitor increases BBM time by roughly 70ns at min.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 48 16 Layout Considerations The PCB layout is critical to good performance, because the environment includes both highsensitivity analog signals and high-current motor drive signals. 16.1 Sense Resistors The sense resistors are susceptible to ground differences and ground ripple voltage, as the microstep current steps result in voltages down to 0.5mV. No current other than the sense resistor currents should flow through their connections to ground.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 49 16.4 Layout Example top layer (assembly side) inner layer inner layer bottom layer (solder side) Figure 16.1 Layout example www.trinamic.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 50 17 Absolute Maximum Ratings The maximum ratings may not be exceeded under any circumstances. Operating the circuit at or near more than one maximum rating at a time for extended periods shall be avoided by application design. Parameter Supply voltage Supply and bridge voltage max.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 51 18 Electrical Characteristics 18.1 Operational Range Parameter Junction temperature Supply voltage TMC261 I/O supply voltage Symbol Min Max Unit TJ VVS VVIO -40 9 3.00 125 59 5.25 °C V V 18.2 DC and AC Specifications DC characteristics contain the spread of values guaranteed within the specified supply voltage range unless otherwise specified. Typical values represent the average value of all parts measured at +25°C.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 52 Notes: a) Low-side drivers behave similar to a constant-current source between 0V and 2.5V (switching on) and between 2.5V and 5V (switching off), because switching MOSFETs go into saturation. At 2.5V, the output current is about 85% of peak value. This is the value specified. PMOS High-Side Driver DC Characteristics VVS = 24.0V, VVS - VHSX = 2.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) Linear Regulator DC Characteristics Parameter Symbol Conditions Output voltage V5VOUT Output resistance Deviation of output voltage over the full temperature range Output current capability (attention, do not exceed maximum ratings with DC current) R5VOUT V5VOUT(DEV) I5VOUT Min Typ Max Unit I5VOUT = 10mA TJ = 25°C Static load I5VOUT = 10mA TJ = full range 4.75 5.0 5.25 V 60 W mV VVS = 12V 100 mA VVS = 8V 60 mA VVS = 6.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) Digital Logic Levels 54 DC Characteristics Parameter Symbol Conditions d) Input voltage low level Input voltage high level d) Output voltage low level Output voltage high level Input leakage current VINLO VINHI VOUTLO VOUTHI IILEAK Min -0.3 2.4 IOUTLO = 1mA IOUTHI = -1mA 0.8VVIO -10 Typ Max 0.8 VVIO+0.3 0.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 55 19 Package Mechanical Data 19.1 Dimensional Drawings Attention: Drawings not to scale. Figure 19.1 Dimensional drawings Parameter Total thickness Standoff Mold thickness Lead frame thickness Lead width Body size X Body size Y Lead pitch Exposed die pad size X Exposed die pad size Y Lead length Package edge tolerance Mold flatness Coplanarity Lead offset Exposed pad offset Ref A A1 A2 A3 b D E e J K L aaa bbb ccc ddd eee Min 0.80 0.00 0.2 3.2 3.2 0.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 56 20 Disclaimer TRINAMIC Motion Control GmbH & Co. KG does not authorize or warrant any of its products for use in life support systems, without the specific written consent of TRINAMIC Motion Control GmbH & Co. KG. Life support systems are equipment intended to support or sustain life, and whose failure to perform, when properly used in accordance with instructions provided, can be reasonably expected to result in personal injury or death.
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 57 22 Table of Figures Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure 1.1 Applications block diagrams ......................................................................................................................... 4 2.1 TMC262 pin assignments .....................................................................................
TMC262 DATASHEET (Rev. 2.14 / 2016-JUL-14) 58 23 Revision History Version Date Author Description BD = Bernhard Dwersteg SD – Sonja Dwersteg 1.00 2010-AUG-09 BD 2.00 2012-FEB-03 SD 2.01 2.02 2012-FEB-20 2012-MAR-29 SD SD 2.03 2012-JUN-07 SD 2.04 2012-AUG-01 SD 2.05 2.06 2012-AUG-13 2012-NOV-05 SD SD 2.07 2013-FEB-14 BD 2.08 2013-MAY-14 BD 2.09 2.09a 2013-JUL-30 2013-OKT-31 SD BD 2.10 2013-NOV-29 BD 2.11 2.12 2014-MAY-12 2015-JAN-13 SD BD 2.13 2.