L6460 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'L6460' PDF : 139 Pages View PDF
L6460
Power bridges
Table 27. Stepper fast decay
MixDecPhX[4:0]
00000
00001
00010
00011
00100
00101
00110
00111
01000
01001
01010
01011
01100
01101
01110
01111
1xxxx
Fast decay percentage
during off time
Unit
Typ
0
%
6.25
%
12.5
%
18.75
%
25
%
31.25
%
37.6
%
43.75
%
50
%
56.25
%
62.5
%
68.75
%
75
%
81.25
%
87.5
%
93.75
%
100
%
14.1.6
Synchronous buck regulator configuration (Bridge 3)
Bridge 3 can be configured to be used as 2 independent synchronous buck regulators or as
a single high current synchronous buck regulator using GPIOs pins in order to close the
voltage loop. The resulting regulator(s) will implement a non linear, pulse skipping, control
loop using an internally generated PWM signal. The voltage will be set externally with a
divider network and PWM duty cycle that can be programmed in order to ensure a proper
regulation.
The regulator will be enabled/disabled using serial interface and will implement a soft start
strategy similar to that used by primary switching regulator.
Doc ID 17713 Rev 1
73/139
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