SLDS182A August   2010  – July 2015 TPIC7218-Q1

PRODUCTION DATA.  

  1. 1 Device Overview
    1. 1.1 Features
    2. 1.2 Applications
    3. 1.3 Description
    4. 1.4 Functional Block Diagram
  2. 2 Revision History
  3. 3 Pin Configuration and Functions
  4. 4 Specifications
    1. 4.1  Absolute Maximum Ratings
    2. 4.2  ESD Ratings
    3. 4.3  Recommended Operating Conditions
    4. 4.4  Thermal Information
    5. 4.5  Input Port Electrical Characteristics
    6. 4.6  PWM Low-Side Driver Electrical Characteristics
    7. 4.7  Digital Low-Side Driver Electrical Characteristics
    8. 4.8  High-Side Driver Electrical Characteristics
    9. 4.9  K-Line Electrical Characteristics
    10. 4.10 Warning Lamp Electrical Characteristics
    11. 4.11 Power Supply Electrical Characteristics
    12. 4.12 SPI Electrical Characteristics
    13. 4.13 WL_LS Low-Side Switch Output Characteristics
    14. 4.14 Wheel-Speed High-Side Driver Characteristics
    15. 4.15 Wheel-Speed Low-Side Driver Characteristics
    16. 4.16 Wheel-Speed Output Characteristics
    17. 4.17 RST Output Characteristics
    18. 4.18 SPI Timing Electrical Characteristics
    19. 4.19 Power Supply Switching Characteristics
    20. 4.20 Wheel-Speed Counter Switching Characteristics
    21. 4.21 HS Driver Switching Characteristics
    22. 4.22 Digital Low-Side Driver Switching Characteristics
    23. 4.23 PWM Low-Side Driver Switching Characteristics
    24. 4.24 K-Line Switching Characteristics
    25. 4.25 Warning Lamp Switching Characteristics
    26. 4.26 Watchdog Switching Characteristics
    27. 4.27 Wheel Speed Interface Switching Characteristics
    28. 4.28 Wheel-Speed High-Side Driver Switching Characteristics
    29. 4.29 Wheel-Speed Output Switching Characteristics
    30. 4.30 Typical Characteristics
  5. 5 Detailed Description
    1. 5.1 Overview
    2. 5.2 Functional Block Diagram
    3. 5.3 Feature Description
      1. 5.3.1  Ground Connections
      2. 5.3.2  Charge Pump
      3. 5.3.3  Reference Current Generator
      4. 5.3.4  Wheel-Speed Reference, VREF
      5. 5.3.5  Faults Common To Most Functional Blocks
      6. 5.3.6  PWM Low-Side Drivers
      7. 5.3.7  Digital Low-Side Drivers
      8. 5.3.8  High-Side Drivers
        1. 5.3.8.1 High-Side Terminals: GPR, SPR, DPR, and HSPC
        2. 5.3.8.2 High-Side Terminals: GMR, SMR, DMR, and HSMC
      9. 5.3.9  Wheel-Speed Sensing
      10. 5.3.10 K-Line
      11. 5.3.11 Warning Lamp Drivers
      12. 5.3.12 Watchdog Operation
    4. 5.4 Device Functional Modes
      1. 5.4.1 Device Reset
    5. 5.5 Programming
      1. 5.5.1 Serial Peripheral Interface (SPI) Interface To Microcontroller
        1. 5.5.1.1 Summary and Description Of Control and Reporting Registers
    6. 5.6 Register Maps
      1. 5.6.1 SPI Registers
  6. 6 Application and Implementation
    1. 6.1 Application Information
    2. 6.2 Typical Application
      1. 6.2.1 Design Requirements
      2. 6.2.2 Detailed Design Procedure
        1. 6.2.2.1 Gatedrive circuit Motor FET
        2. 6.2.2.2 Gatedrive circuit Master Relay FET
      3. 6.2.3 Application Curves
  7. 7 Power Supply Recommendations
  8. 8 Layout
    1. 8.1 Layout Guidelines
      1. 8.1.1 Local Grounding Configuration
      2. 8.1.2 Board Level Grounding Configuration, TPIC7218-Q1 to System Connector
      3. 8.1.3 VCC3 Bypass Capacitor
      4. 8.1.4 VDD Bypass Capacitor
      5. 8.1.5 VBAT and CHP Capacitors
      6. 8.1.6 Multiple Plane Layer Assignments
      7. 8.1.7 Duplicate Pad Under TPIC7218-Q1 on All Non-Ground Plane Inner Layers
      8. 8.1.8 Flooding
    2. 8.2 Layout Example
  9. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Community Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  10. 10Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

3 Pin Configuration and Functions

3.0.1 PFP Package
80-Pin HTQFP With PowerPAD™
Top View

TPIC7218-Q1 po1_lds174.gif

Pin Functions

PIN I/O FUNCTION DESCRIPTION INPUT PIN
PULLUP OR
PULLDOWN		 PIN DURING
RESET CONDITION
NAME NO.
CHP 60 O External 100-nF capacitor to VBAT for an internal charge pump Pullup VCHP = VBAT + 12 V (typical)
CNT_CLR 23 I Clear bit for the 8-bit digital counter that counts the wheel-speed sensor pulse edges seen in WSSOUTx Pulldown
CNT_EN 22 I Enable bit for the 8-bit digital counter that counts the wheel-speed sensor pulse edges seen in WSSOUTx Pulldown
CSN 44 I SPI chip select active low pin Pullup
DMR 55 I Drain pin for master relay (MR) FET Pulldown Externally supplied voltage (VBAT)
DPR 62 I Drain pin for PR (pump motor relay) FET Pulldown Externally supplied voltage (VBAT)
GMR 57 O Gate pin for master relay (MR) FET Low
GND 6 Ground Ground
GPR 58 O Gate pin for PR (pump motor relay) FET Low
HSMC 45 I Logic input for MR (master relay) FET Pulldown
HSPC 47 In Logic input for PR (pump motor relay) FET Pulldown
ISOK 54 I/O K-line serial data transmit output to diagnosis tester and K-line serial data receive input from diagnosis tester High-Z High-Z
KRx 49 O K-line serial data input to the microcontroller High
KTx 48 I K-line serial data output from the microcontroller Pullup
nRST 11 I/O Reset signal that is used to either indicate an internal reset event or to induce an external reset Pulldown See Table 5-1
PGND1 37 Ground Power ground pin for low-side valve driver 1
PGND2 31 Ground Power ground pin for low-side valve driver 2
32
PGND3 29 Ground Power ground pin for low-side valve driver 3
30
PGND4 24 Ground Power ground pin for low-side valve driver 4
PGND5 63 Ground Power ground pin for low-side valve driver 5
64
PGND6 69 Ground Power ground pin for low-side valve driver 6
70
PGND7 71 Ground Power ground pin for low-side valve driver 7
72
PGND8 77 Ground Power ground pin for low-side valve driver 8
Q1 35 O Drain pin of the low-side valve driver 1 High-Z
36
Q2 33 O Drain pin of the low-side valve driver 2 High-Z
34
Q3 27 O Drain pin of the low-side valve driver 3 High-Z
28
Q4 25 O Drain pin of the low-side valve driver 4 High-Z
26
Q5 65 O Drain pin of the low-side valve driver 5 High-Z
66
Q6 67 O Drain pin of the low-side valve driver 6 High-Z
68
Q7 73 O Drain pin of the low-side valve driver 7 High-Z
74
Q8 75 O Drain pin of the low-side valve driver 8 High-Z
76
REF 8 I Reference pin used to generate the internal bias currents. An external load of 10 kΩ is needed. Pulldown REF = 1.25 V
SCLK 43 I SPI clock pin Pulldown
SI 42 I SPI input pin Pulldown
SMR 56 O Source pin for master relay (MR) FET Low
SO 41 O SPI output pin High-Z
SPR 61 I/O Source pin for PR (pump motor relay) FET Low
TEST 46 I Internal test pin. For any application, this is externally pulled to ground with a 1-kΩ resistor. Pulldown
VBAT 59 Power Battery power supply (after reverse battery)
VCC3 7 Power Internal regulator for digital logic. Connect this pin only to a capacitor for regulator stability. VCC3 = 3.3 V
VDD 9 Power 5-V external power supply
VIO 38 Power 3.3-V or 5-V external supply for the I/O buffers
VREF 13 I Externally supplied voltage reference used to set the current detection thresholds for the wheel-speed sensor interface Pulldown
WDIN 10 I Watchdog timer signal Pulldown
WLG1 50 I Logic input for warning lamp driver 1 Pulldown
WLG2 51 I Logic input for warning lamp driver 2 Pulldown
WLQ1 52 O Drain pin of low-side warning lamp driver 1 See Table 5-1
WLQ2 53 O Drain pin of low-side warning lamp driver 2 See Table 5-1
WL_LS 12 O Low side switch for warning-lamp driver control that indicates the watchdog status High-Z See Table 5-1
WSLS1 21 I Wheel-speed sensor channel 1 low-side switch High-Z
WSLS2 20 I Wheel-speed sensor channel 2 low-side switch High-Z
WSLS3 19 I Wheel-speed sensor channel 3 low-side switch High-Z
WSLS4 18 I Wheel-speed sensor channel 4 low-side switch High-Z
WSP1 80 O Supplies VBAT power to wheel-speed sensor channel 2 Low
WSP2 1 O Supplies VBAT power to wheel-speed sensor channel 2 Low
WSP3 2 O Supplies VBAT power to wheel-speed sensor channel 3 Low
WSP4 3 O Supplies VBAT power to wheel-speed sensorchannel 4 Low
WSS1 17 I Wheel-speed sensor channel 1 signal pin Pulldown
WSS2 16 I Wheel-speed sensor channel 2 signal pin Pulldown
WSS3 15 I Wheel-speed sensor channel 3 signal pin Pulldown
WSS4 14 I Wheel-speed sensor channel 4 signal pin Pulldown
WSSOUT1 78 O Supplies processed wheel-speed pulse signal output to the microcontroller of channel 1 in a digital voltage form Low
WSSOUT2 79 O Supplies to the microcontroller the processed wheel-speed pulse signal of channel 2 in a digital voltage form Low
WSSOUT3 4 O Supplies to the microcontroller the processed wheel-speed pulse signal of channel 3 in a digital voltage form Low
WSSOUT4 5 O Supplies to the microcontroller the processed wheel-speed pulse signal of channel 4 in a digital voltage form Low
WSSQ1 40 O Drain pin for wheel-speed channel 1 output driver. Used to pass WSSOUT1 information to a high-voltage capable node High-Z
WSSQ2 39 O Drain pin for wheel-speed channel 2 output driver. Used to pass WSSOUT2 information to a high-voltage capable node High-Z
PAD Ground Thermal power ground pin for low-side drivers. Connect to PGNDx plane.