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| TDA5145TS Datasheet, PDF (8/20 Pages) NXP Semiconductors – Brushless DC motor drive circuit | |||
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Philips Semiconductors
Brushless DC motor drive circuit
Notes
1. An unstabilized supply can be used.
2. VVMOT = VP, all other inputs at 0 V; all outputs at VP; Io = 0 mA.
3. Switching levels with respect to MOT1, MOT2 and MOT3.
4. Drivers are in the high-impedance OFF-state.
5. The outputs are short-circuit protected by limiting the current and the IC temperature.
Product speciï¬cation
TDA5145TS
handbook, full pagewidth
back EMF signal
VMOT0
VCSW
hysteresis 75 µV typ.
VCSW
MGR381
MOT1, MOT2 and MOT3
comparator threshold
voltages
Fig.4 Switching levels with respect to MOT1, MOT2 and MOT3.
handbook, halfpag1e2.5 V
2.0 V
tr
12.5 V
2.0 V
tf
MGR382
1998 Oct 27
Fig.5 Output transition time measurement.
8
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