Datasheet TB9062FNG (Toshiba) - 8
| Manufacturer | Toshiba |
| Description | Pre-driver for automobile |
| Pages / Page | 30 / 8 — 7.2.2. DC excitation of start up sequence. Fig.7.2.2.1. Block circuit of … |
| File Format / Size | PDF / 871 Kb |
| Document Language | English |
7.2.2. DC excitation of start up sequence. Fig.7.2.2.1. Block circuit of DC excitation. Fig. 7.2.2.2. DC excitation timing
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Text Version of Document
TB9062FNG
7.2.2. DC excitation of start up sequence
To perform sensorless start up sequence, TB9062FNG initially will set up pre-set voltage level on each 3 phases (dc excitation) to set motor rotor on pre-set positon. The excitation time length is set by external capacitor on pin “IPC” by the following formula. DC excitation time ：TIP [ms] = 400×CIP [μF] In the case that DC excitation is not required, external capacitor on pin “IPC” does not need to set and ”IPC” pin can be kept open on PCB. VBAT Vcc5 10μA Level shift ＋ IP IPC － Sensorless CIP core logic ST/SP
Fig.7.2.2.1
：
Block circuit of DC excitation
PWM INT PWM VTH start IPC ST/SP IP H H U phase HZ HZ HZ terminal voltage L L H H V phase HZ HZ HZ terminal voltage L L H H W phase HZ HZ HZ terminal voltage L L TIP = 400×CIP[ms] TIP 30° 60° 60° 60° 60° ※CIP：μF DC excitation 3 phase sensorless control Forced commutation
Fig. 7.2.2.2
：
DC excitation timing
© 2019 8 / 30 Toshiba Electronic Devices & Storage Corporation 2019-08-05
7.2.2. DC excitation of start up sequence
To perform sensorless start up sequence, TB9062FNG initially will set up pre-set voltage level on each 3 phases (dc excitation) to set motor rotor on pre-set positon. The excitation time length is set by external capacitor on pin “IPC” by the following formula. DC excitation time ：TIP [ms] = 400×CIP [μF] In the case that DC excitation is not required, external capacitor on pin “IPC” does not need to set and ”IPC” pin can be kept open on PCB. VBAT Vcc5 10μA Level shift ＋ IP IPC － Sensorless CIP core logic ST/SP
Fig.7.2.2.1
：
Block circuit of DC excitation
PWM INT PWM VTH start IPC ST/SP IP H H U phase HZ HZ HZ terminal voltage L L H H V phase HZ HZ HZ terminal voltage L L H H W phase HZ HZ HZ terminal voltage L L TIP = 400×CIP[ms] TIP 30° 60° 60° 60° 60° ※CIP：μF DC excitation 3 phase sensorless control Forced commutation
Fig. 7.2.2.2
：
DC excitation timing
© 2019 8 / 30 Toshiba Electronic Devices & Storage Corporation 2019-08-05
