TLE72422GXT Infineon Technologies, TLE72422GXT Datasheet
TLE72422GXT
Specifications of TLE72422GXT
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TLE72422GXT Summary of contents
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Table of Contents Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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Channel Fixed Frequency Constant Current Control IC 1 Overview 1.1 Features • Low side constant current control pre-driver integrated circuit • Four independent channels • Output current programmable with 11 bit resolution – Current range = 0 to 1.2A ...
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Open load in on state – Open load in off state – Short to ground – Test complete bit - indicates that fault detection test has completed • Control loop monitor capabilities – The average current measurement over the ...
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POSx NEGx R G OUTx Figure 1 External Circuit Diagram for On/Off Mode Operation 1.3.2 Constant Current Mode Operation During constant current operation, the POSx and NEGx pins must be connected to the circuit in the configuration shown in Figure ...
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The 11 bit Current Set Point is programmed via the SPI message #3. The equation for calculating the current setpoint is: The Proportional coefficient (KP) and the Integral coefficient (KI) of the control loop are programmed in SPI message #5. ...
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If the autozero function is enabled in SPI message #7, then the measured offset will be subtracted from the A/D converter output as shown in Dither A triangular dither waveform can be superimposed on the current set point ...
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Set Point change > Threshold New Set Point > Old Set Point Steady- next State ADC value Reset Mode Set point change > Threshold New Set Point < Old Set Point Figure 5 Transient Mode State Diagram A typical current ...
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Block Diagram V5D V5A GND_D GND_A V_SIGNAL BAT SCK SI SO CS_B RESET_B ENABLE FAULT PHASE_SYNC CLK TEST Figure 7 Block Diagram Data Sheet Current Control Supply Block Biasing Monitoring Current Control SPI Interface V_SIGNAL V_SIGNAL Current Control Block ...
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Pin Configuration 3.1 Pin Assignment Figure 8 Pin Configuration 3.2 Pin Definitions and Functions Pin Symbol I/O 1 OUT3 O 2 OUT2 O 3 POS3 I 4 NEG3 I 5 NEG2 I 6 POS2 I 7 GND_A - 8 ...
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Pin Symbol I/O 10 NEG1 I 11 NEG0 I 12 POS0 I 13 OUT1 O 14 OUT0 O 15 BAT I 16 PHASE_SYNC I 17 TEST V_SIGNAL GND_D - 22 ...
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General Product Characteristics 4.1 Maximum Ratings 1) Absolute Maximum Ratings = -40 °C to +150 °C; all voltages with respect to ground, positive current flowing into pin (unless otherwise T j specified) Pos. Parameter Voltages 4.1.1 Battery Input (VBAT) ...
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Functional Range T = -40 °C to +150 °C; all voltages with respect to ground, positive current flowing into pin (unless otherwise j specified) Pos. Parameter 4.2.1 Supply Voltage (VBAT) - Full Parametric Operation on all functions except FET ...
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Functional Description and Electrical Characteristics Note: The listed characteristics are ensured over the operating range of the integrated circuit. Typical characteristics specify mean values expected over the production spread. If not otherwise specified, typical characteristics apply at T 5.1 ...
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Input / Output All digital inputs are compatible with 3.3 V and 5 V I/O logic levels. The supply voltage for the SPI output SO is the V_SIGNAL pin. All digital inputs are pulled to a known state by ...
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OUTx T1 PWM/32 CLK PHASE_SYNC Figure 10 Phase Synchronization Diagram The TEST pin is an input pin that is used during IC level test. This pin should be connected directly to ground for normal device operation. ...
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Certain faults can be prevented from activating the FAULT pin by setting the fault mask register in SPI message #7. Once a fault is detected it is latched into the FAULT register. The microcontroller can access the ...
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Two fault tested bits are defined: The tested bit is set to 1 when the fault test has completed successfully. Table 3 Diagnostics Tested Bits / Flags Tested Type Short to Ground and Open load OFF tested Short to Battery ...
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On-State Diagnostics When the OUTx pin transitions high, the fault timers are cleared to 0 and the tested timer starts. If the tested timer expires, the Bit SB-T (in the SPI register #9) is set the ...
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PWM_Start OUTx Vpos OL-ON-F SPI Message Diagnostic Read Figure 13 Open - On 5.3.2 Off-State Diagnostics The off-state diagnostics function in both constant current mode and in on/off mode. When the OUTx pin transitions low, the fault timers are cleared ...
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SG/OL-OFF TESTED latch OL-OFF- FAULT latch SG- FAULT latch Figure 14 Off-State Diagnostics OUTx OFF-T open LOAD ok Vol V Vsg POS OL-O FF-F SPI M essage Diagnostic Read Figure 15 Off-State Diagnostics Timing Diagram - open Data Sheet Functional ...
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OUTx Tested Timer OFF-T Short to ground LOAD ok V POS Vol Vsg SG-F SPI READ ADDR 9 Figure 16 Off-State Diagnostics Timing Diagram - short to ground Over voltage Shutdown and Diagnostics If the voltage at the BAT pin ...
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V5D = 4.75V to 5.25V, Vbat = 5.5V to 42V, current flowing into pin (unless otherwise specified) Pos. Parameter 5.3.8 POS Fault Threshold Voltage 5.3.9 POS Fault Threshold Voltage 5.3.10 POS Fault Threshold Voltage 5.3.11 POS Fault Threshold Voltage 5.3.12 ...
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Output Driver The OUTx pins of the device are connected to the gates of the external MOSFET transistors. The OUTx pin driver circuits charge and discharge the MOSFET gate capacitance with a constant current source and sink. The supply ...
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Serial Peripheral Interface (SPI) SPI messages for the TLE7242 2G IC are 32-bit values broken down into the following fields. Bit 31: Read/Write Bit - 0 = Read 1 = Write Bits 30-26: Message Identifier Bits 25-24: Channel Number ...
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SPI Signal Description Electrical Characteristics: V5D = 4.75V to 5.25V, Vbat = 5.5V to 42V, current flowing into pin (unless otherwise specified) Pos. Parameter 5.6.1 T LEAD 5.6.2 T LAG 5.6.3 5.6.4 1/F Period of SCK SCK 5.6.5 5.6.6 ...
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CS_B t 5 SCK clock don’t care Bit 31 don’t care MSB t 11 high impedance SO Bit 31 MSB Figure 17 SPI Timing Diagram Data Sheet Functional Description and Electrical Characteristics ...
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... Description Read / Write Bit 0 = Read 1 = Write Message Identifier 0 0000 = IC Version / Manufacturer Description Message Identifier 0 0000 = IC Version / Manufacturer IC Manufacturer ID Number 1100 0001= Infineon Technologies Version Number 0000 0010 = K11 28 TLE7242-2G Reset Value not used Reset Value Manuf Rev. 1.0, 2008-07-09 ...
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SPI Message #1 - Main Period Set Sent Values: Main Period Set R/W MSG_ID not used Field Bits Type R/W 31 MSG_ID 30:26 Channel 25:24 N 13:0 Response: Main ...
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SPI Message #2 - PWM Offset Sent Values: PWM Offset R/W MSG_ID Field Bits Type R/W 31 MSG_ID 30:26 Channel 25:24 Phase Synch 4:0 Response: PWM Offset 31 30 ...
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SPI Message #3 - Current Set Point and Dither Amplitude Set Dither Sent Values: Current Set Point and Dither Amplitude Set R/W MSG_ID Dither Dither Step Size ON/ OFF ...
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Response: Current Set Point and Dither Amplitude Set R/W MSG_ID Dither Dither Step Size ON/ OFF Field Bits Type MSG_ID 30:26 Channel 25: ON/OFF 22 Step Size 21:12 ...
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SPI Message #4 - Dither Period Set Sent Values: Dither Period Set R/W MSG_ID not used Field Bits Type R/W 31 MSG_ID 30:26 Channel 25:24 Dither Steps 5:0 Response: ...
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SPI Message #5 - Control Variable Set (KP and KI) Sent Values: Control Variable Set (KP and KI R/W MSG_ID Field Bits Type R/W 31 MSG_ID 30:26 Channel ...
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The duty cycle of the OUTx pin can be calculated from the difference equations: DutyCycle = INT ( k ) error where is the difference between the commanded average current and the measured average current in units of Amps, where ...
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SPI Message #6 - Dynamic Threshold Value Set Sent Values: Dynamic Threshold Value Set R/W MSG_ID Transient Mode Threshold Field Bits Type R/W 31 MSG_ID 30:26 Channel 25:24 Transient ...
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Field Bits Type Transient 22:12 Mode Thresh Int. Preload 11:0 Current Preload The Preload value is limited to a maximum value Data Sheet Functional Description and Electrical Characteristics Description Transient Mode Threshold Setpoint changes grater than ...
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SPI Message #7 - On/Off Control and Fault Mask Configuration Sent Values: On/Off Control and Fault Mask Configuration R/W MSG_ID FMR FME DIAG_TMR Disable Field Bits Type R/W ...
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Response: On/Off Control and Fault Mask Configuration R/W MSG_ID FMR FME DIAG_TMR Disable Field Bits Type MSG_ID 30:26 CMx 23, 22, 21, 20 FMx 19, 18, 17, 16 FMR ...
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SPI Message #8 - Diagnostic Configuration Sent Values: Diagnostic Configuration R/W MSG_ID SB_RETRY1 Field Bits Type R/W 31 MSG_ID 30:26 SBx 23:22 17:16 11:10 5:4 SB_RETRYx 21:18 15:12 9:6 ...
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Field Bits Type SBx 23:22 17:16 11:10 5:4 SB_RETRYx 21:18 15:12 9:6 3:0 If the SB_RETRY field is programmed to the value 0, the short to battery retry period is identical to the programmed the PWM period as programmed in ...
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SPI Message #9 - Diagnostic Read Sent Values: Diagnostic Read R/W MSG_ID Field Bits Type R/W 31 MSG_ID 30:26 Response Values: Diagnostic Read ...
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SPI Message #10 - Current Read Sent Values: Current Read R/W MSG_ID Field Bits Type R/W 31 MSG_ID 30:26 Channel 25:24 Response Values: Current Read ...
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SPI Message #11 - Autozero Read Sent Values: Autozero Read R/W MSG_ID Field Bits Type R/W 31 MSG_ID 30:26 Channel 25:24 Response Values: Autozero Read ...
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Field Bits Type PSL off 12 AZ (on) value 11:6 AZ (off) value 5:0 Data Sheet Functional Description and Electrical Characteristics Description Phase sync latch This latch is set when a rising edge occurs on ...
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SPI Message #12 - Duty Cycle Read Sent Values: Duty Cycle Read R/W MSG_ID Field Bits Type R/W 31 MSG_ID 30:26 Channel 25:24 Response Values: Autozero Read 31 30 ...
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Application Information Note: The following information is given as a hint for the implementation of the device only and shall not be regarded as a description or warranty of a certain functionality, condition or quality of the device. V ...
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Package Outlines Figure 19 PG-DSO-28-26 Green Product (RoHS-compliant) To meet the world-wide customer requirements for environmentally friendly products and to be compliant with government regulations the device is available as a green product. Green products are RoHS-Compliant (i.e Pb- ...
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Revision History 0 Version Date Changes 1.0 July 9, 2008 Release of datasheet Data Sheet 49 TLE7242-2G Revision History Rev. 1.0, 2008-07-09 ...
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... Infineon Technologies Office. Infineon Technologies components may be used in life-support devices or systems only with the express written approval of Infineon Technologies failure of such components can reasonably be expected to cause the failure of that life-support device or system or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body or to support and/or maintain and sustain and/or protect human life ...