Datasheet TB9062FNG (Toshiba) - 10
| Manufacturer | Toshiba |
| Description | Pre-driver for automobile |
| Pages / Page | 30 / 10 — Input. 7.3.1. Input digital filter. 7.3.2. Input PWM signal frequency … |
| File Format / Size | PDF / 871 Kb |
| Document Language | English |
Input. 7.3.1. Input digital filter. 7.3.2. Input PWM signal frequency conversion circuit. 7.3.3. Input compensation circuit
Model Line for this Datasheet
Text Version of Document
TB9062FNG
Input 7.3.1. Input digital filter
TB9062FNG has digital filter for the input PWM signal, rejecting input if below 6μs(2μs×3) and passing if above 8μs(2μs×4).
7.3.2. Input PWM signal frequency conversion circuit
The input PWM signal from pin “SIG” is checked for frequency and duty by TB9062FNG. In the case that frequency is over the spec (5Hz to 1.2kHz) or the duty is out of the spec, it is considered as fault and TB9062FNG shall stop pre-driver output (Hi-Z).
7.3.3. Input compensation circuit
TB9062FNG build-in input PWM duty compensation circuit by the following formula and the figure. y = (255/179) × (x-39) In the case input PWM duty range is lower than 15%, output PWM duty become 0%. In the case input PWM duty range is upper than 85%, output PWM duty become 100%. 255 y dut WM P 255/179 nput ed i at 15% 85% 100% pens om C 0 39 218 255 Pin ”SIG” input PWM duty
Fig. 7.3.3 ”SIG” pin input PWM duty compensation
© 2019 10 / 30 Toshiba Electronic Devices & Storage Corporation 2019-08-05
Input 7.3.1. Input digital filter
TB9062FNG has digital filter for the input PWM signal, rejecting input if below 6μs(2μs×3) and passing if above 8μs(2μs×4).
7.3.2. Input PWM signal frequency conversion circuit
The input PWM signal from pin “SIG” is checked for frequency and duty by TB9062FNG. In the case that frequency is over the spec (5Hz to 1.2kHz) or the duty is out of the spec, it is considered as fault and TB9062FNG shall stop pre-driver output (Hi-Z).
7.3.3. Input compensation circuit
TB9062FNG build-in input PWM duty compensation circuit by the following formula and the figure. y = (255/179) × (x-39) In the case input PWM duty range is lower than 15%, output PWM duty become 0%. In the case input PWM duty range is upper than 85%, output PWM duty become 100%. 255 y dut WM P 255/179 nput ed i at 15% 85% 100% pens om C 0 39 218 255 Pin ”SIG” input PWM duty
Fig. 7.3.3 ”SIG” pin input PWM duty compensation
© 2019 10 / 30 Toshiba Electronic Devices & Storage Corporation 2019-08-05
