L6460 STMicroelectronics, L6460 Datasheet - Page 73

• Manufacturer Part Number: L6460
• Description: MOSFET & Power Driver ICs SPI Config Stepper DC Multi Motor DRV
• Manufacturer: STMicroelectronics
• Type: Full-Bridge Driverr

Specifications of L6460

• Product: Half-Bridge Drivers
• Rise Time: 0.4 us
• Fall Time: 0.4 us
• Supply Voltage (max): 38 V
• Supply Voltage (min): 13 V
• Supply Current: 11 mA
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Number Of Drivers: 4
• Output Current: 10 mA
• Output Voltage: 30 V
• Package / Case: TQFP-64
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

L6460
14.1.6
Table 27.
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.
Stepper fast decay
MixDecPhX[4:0]
00000
00001
00010
00011
00100
00101
00110
00111
01000
01001
01010
01011
01100
01101
01110
01111
1xxxx
Doc ID 17713 Rev 1
Fast decay percentage
during off time
18.75
31.25
43.75
56.25
68.75
81.25
93.75
6.25
12.5
37.6
62.5
87.5
Typ
100
25
50
75
0
Power bridges
Unit
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