Datasheet TB9M040FTG (Toshiba) - 9
| Manufacturer | Toshiba |
| Description | IC for automotive three-phase brushless DC motor in 36-VFQFPN package |
| Pages / Page | 38 / 9 — Preliminary. 9.2. High Side Driver (HSD). HSD. Figure 9.2.1 High Side … |
| File Format / Size | PDF / 1.0 Mb |
| Document Language | English |
Preliminary. 9.2. High Side Driver (HSD). HSD. Figure 9.2.1 High Side Driver Block Diagram
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Preliminary
TB9M040FTG
9.2. High Side Driver (HSD)
This product incorporates one channel of a high-side driver (HSD), powered from VCC (5 V). The HSD channel includes an overcurrent detection function. The HSD channel can be configured for either register control or PWM control.
HSD
APB AMBA APB Interface PCLK and Register block VCC DF OC_HSD rol System D nt IT Control N HS Co U [ANDETSR] Mode Select <HSDOCDET> Enable/Disable [HSDMR]<HSDMS> [HSDER]<HSDEN> Gate Control OUTH [HSDCR]<HSDGC>
Figure 9.2.1 High Side Driver Block Diagram 9.3. Current-Sense Amplifier (CSAMP)
The Current-Sense Amplifier (CSAMP) amplifies the voltage across the built‑in shunt resistor (Typ. 0.1Ω) by the gain programmed via a 3-bit register field. The amplified output is sent to the 12-bit ADC (MADC), overcurrent detection comparator (OCCMP), and current limit comparator (CLCMP). The output offset voltage can be adjusted. Refer to Figure 9.1.1 "BDRV Block Diagram" for the module configuration of CSAMP.
9.4. Current Limit Comparator (CLCMP)
This function performs current limiting when the output of the current-sense amplifier exceeds a threshold value. The voltage output from the current-sense amplifier is input to this comparator. The CLCMP incorporates a digital filter to prevent malfunction caused by noise. For the configuration related to abnormality detection, refer to Figure 9.1.2 BDRV Abnormality Detection Block Diagram.
9.5. Overcurrent Detection Comparator (OCCMP)
This function detects an abnormal condition when the output of the current-sense amplifier exceeds a threshold value. The overcurrent detection function can be enabled or disabled (flag only) via register settings. The OCCMP incorporates a digital filter to prevent malfunction caused by noise For the configuration related to abnormality detection, refer to Figure 9.1.2 BDRV Abnormality Detection Block Diagram. © 2 026 9 2026-3-26 Toshiba Electronic Devices & Storage Corporation Rev. 1.0 Document Outline 1. Description 2. Applications 3. Features 4. Functions 5. Block Diagram 6. Pin Assignments 7. Pin Description 8. I/O Equivalent Circuits 9. Functional Description 9.1. Bridge Drivers (BDRV) Circuit 9.2. High Side Driver (HSD) 9.3. Current-Sense Amplifier (CSAMP) 9.4. Current Limit Comparator (CLCMP) 9.5. Overcurrent Detection Comparator (OCCMP) 9.6. Vector Engine(VE) 9.7. Programmable Motor Driver (PMD) 9.8. Memory Map 10. Electrical Characteristics 10.1. Absolute Maximum Ratings 10.2. Operating Ranges 10.3. Overall Electrical Characteristics 10.4. Reset Generator and Standby Time 10.5. 5-V Regulator (LDO5V) 10.6. 1.5-V Regulator (LDO15V) 10.7. Charge Pump 10.8. Oscillator 10.9. 12-bit ADC 10.10. Bridge Drivers (BRDV) 10.11. Current-Sense Amplifier (CSAMP) 10.12. Current Limit Comparator (CLCMP) 10.13. Overcurrent Detection Comparator (OCCMP) 10.14. Back-EMF Comparator (BEMFCMP) 10.15. Thermal Shutdown (TSD) Circuit 10.16. LIN 10.17. UART 10.18. SPI 10.19. GPIO 10.20. Flash (Code Flash) 10.21. Other 11. Application Circuit Example 12. Package Information 12.1. Package Dimensions 12.2. Marking 13. IC Usage Considerations 13.1. Notes on Handling of ICs 13.2. Points to Remember on Handling of ICs RESTRICTIONS ON PRODUCT USE
Preliminary
TB9M040FTG
9.2. High Side Driver (HSD)
This product incorporates one channel of a high-side driver (HSD), powered from VCC (5 V). The HSD channel includes an overcurrent detection function. The HSD channel can be configured for either register control or PWM control.
HSD
APB AMBA APB Interface PCLK and Register block VCC DF OC_HSD rol System D nt IT Control N HS Co U [ANDETSR] Mode Select <HSDOCDET> Enable/Disable [HSDMR]<HSDMS> [HSDER]<HSDEN> Gate Control OUTH [HSDCR]<HSDGC>
Figure 9.2.1 High Side Driver Block Diagram 9.3. Current-Sense Amplifier (CSAMP)
The Current-Sense Amplifier (CSAMP) amplifies the voltage across the built‑in shunt resistor (Typ. 0.1Ω) by the gain programmed via a 3-bit register field. The amplified output is sent to the 12-bit ADC (MADC), overcurrent detection comparator (OCCMP), and current limit comparator (CLCMP). The output offset voltage can be adjusted. Refer to Figure 9.1.1 "BDRV Block Diagram" for the module configuration of CSAMP.
9.4. Current Limit Comparator (CLCMP)
This function performs current limiting when the output of the current-sense amplifier exceeds a threshold value. The voltage output from the current-sense amplifier is input to this comparator. The CLCMP incorporates a digital filter to prevent malfunction caused by noise. For the configuration related to abnormality detection, refer to Figure 9.1.2 BDRV Abnormality Detection Block Diagram.
9.5. Overcurrent Detection Comparator (OCCMP)
This function detects an abnormal condition when the output of the current-sense amplifier exceeds a threshold value. The overcurrent detection function can be enabled or disabled (flag only) via register settings. The OCCMP incorporates a digital filter to prevent malfunction caused by noise For the configuration related to abnormality detection, refer to Figure 9.1.2 BDRV Abnormality Detection Block Diagram. © 2 026 9 2026-3-26 Toshiba Electronic Devices & Storage Corporation Rev. 1.0 Document Outline 1. Description 2. Applications 3. Features 4. Functions 5. Block Diagram 6. Pin Assignments 7. Pin Description 8. I/O Equivalent Circuits 9. Functional Description 9.1. Bridge Drivers (BDRV) Circuit 9.2. High Side Driver (HSD) 9.3. Current-Sense Amplifier (CSAMP) 9.4. Current Limit Comparator (CLCMP) 9.5. Overcurrent Detection Comparator (OCCMP) 9.6. Vector Engine(VE) 9.7. Programmable Motor Driver (PMD) 9.8. Memory Map 10. Electrical Characteristics 10.1. Absolute Maximum Ratings 10.2. Operating Ranges 10.3. Overall Electrical Characteristics 10.4. Reset Generator and Standby Time 10.5. 5-V Regulator (LDO5V) 10.6. 1.5-V Regulator (LDO15V) 10.7. Charge Pump 10.8. Oscillator 10.9. 12-bit ADC 10.10. Bridge Drivers (BRDV) 10.11. Current-Sense Amplifier (CSAMP) 10.12. Current Limit Comparator (CLCMP) 10.13. Overcurrent Detection Comparator (OCCMP) 10.14. Back-EMF Comparator (BEMFCMP) 10.15. Thermal Shutdown (TSD) Circuit 10.16. LIN 10.17. UART 10.18. SPI 10.19. GPIO 10.20. Flash (Code Flash) 10.21. Other 11. Application Circuit Example 12. Package Information 12.1. Package Dimensions 12.2. Marking 13. IC Usage Considerations 13.1. Notes on Handling of ICs 13.2. Points to Remember on Handling of ICs RESTRICTIONS ON PRODUCT USE