TMC4671 Datasheet • IC Version V1.00 | Document Revision V1.04 • 2018-Dec-11
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A single bit enables the Space Vector PWM (SVPWM). No further settings are required for the space vector
PWM - just ON or OFF. The power on default for the SVPWM is OFF. Space Vector PWM can be enabled
to maximize voltage utilization in the case of an isolated star point of the motor. If the star point is not
isolated, unintended current flows through the star point. Space Vector PWM is only used for three-phase
motors. For other motors the SVPWM must be switched off.
5 Safety Functions
Different safety functions are integrated and mapped to status bits. A programmable mask register selects
bits for activation of the STATUS output.
Internal hardware limiters for real time clipping and monitoring of interim values are available. LIMIT or
LIMITS is part of register names of registers associated to internal limiters. Please refer to table 17.
Bit
0
Source
pid_x_target_limit
pid_x_target_ddt_limit
pid_x_errsum_limit
pid_x_output_limit
pid_v_target_limit
pid_v_target_ddt_limit
pid_v_errsum_limit
pid_v_output_limit
pid_id_target_limit
pid_id_target_ddt_limit
pid_id_errsum_limit
pid_id_output_limit
pid_iq_target_limit
1
2
3
4
5
6
7
8
9
10
11
12
13 pid_iq_target_ddt_limit
14
15
16
17
18
19
20
21
22
23
pid_iq_errsum_limit
pid_iq_output_limit
ipark_cirlim_limit_u_d
ipark_cirlim_limit_u_q
ipark_cirlim_limit_u_r
not_PLL_locked
ref_sw_r
ref_sw_h
ref_sw_l
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