tda5145ts-c1 NXP Semiconductors, tda5145ts-c1 Datasheet - Page 14

• Manufacturer Part Number: tda5145ts-c1
• Description: Brushless Dc Motor Drive Circuit
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 3 Switching sequence after a reset pulse; note 1
Note
1. Z = high-impedance OFF-state; L = LOW state; H = HIGH state.
Table 4 Priority of function; note 1
Note
1. L = LOW state; H = HIGH state.
R
It is necessary to protect high current circuits and the output stages are protected in two ways:
1998 Oct 27
ELIABILITY
Current limiting of the ‘lower’ output transistors. The ‘upper’ output transistors use the same base current as the
conducting ‘lower’ transistor (+15%). This means that the current to and from the output stages is limited.
Thermal protection of the six output transistors is achieved by each transistor having a thermal sensor that is active
when the transistor is switched on. The transistors are switched off when the ambient temperature becomes too high.
Brushless DC motor drive circuit
DIR
H
H
H
H
H
H
H
L
L
L
L
L
L
L
BRAKE
H
H
H
H
L
L
L
L
RESET
H
H
L
L
L
L
L
L
L
L
L
L
L
L
TEST
H
H
H
H
L
L
L
L
MOT1
H
H
H
H
H
Z
Z
Z
Z
Z
L
L
L
L
14
MOT2
H
H
H
H
Z
Z
Z
Z
L
L
L
L
L
L
RESET
H
H
H
H
L
L
L
L
DIR
H
H
H
H
H
Z
L
L
Z
Z
Z
Z
L
L
normal
reset
test
test
brake
brake
brake
brake
TDA5145TS
Product specification
FUNCTION
reset
normal direction
mode sequence
reset
reverse direction
mode sequence
FUNCTION