L6460 STMicroelectronics, L6460 Datasheet - Page 54

• 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

Switching regulator controller
13.2
13.3
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Output equivalent circuit
The switching regulator controller output driving stage can be represented with an
equivalent circuit as in the
Figure 13. Switching regulator controller output driving: equivalent circuit
As can be seen from the above figure, the external switch gate is charged with a current
generator I
applied for a T
and source until the sink command is present.
Switching regulator controller application considerations
This controller can implement a step-down switching regulator used to provide a regulated
voltage in the range 0.8 V – 32 V. Such kind of variation could be managed by considering
some constraints in the application and particularly by choosing the correct feedback
reference voltage as indicated in the
Table 13.
Output regulated voltage range
SOURCE
Sink pulse command
Sink command
Switching regulator controller application: feedback reference
Source command
SINK
0.8V ≤ V
5V ≤ V
and it is discharged towards ground with a current generator I
pulse while an equivalent resistor R
out
out
≤ 32V
< 5V
Figure
Doc ID 17713 Rev 1
Tsink
13:
I
SOURCE
I
SINK
Table
VPUMP
13.
R
SUSTAIN
Feedback voltage reference
SUSTAIN
is connected between gate
0.8V - 1V
2.5V - 3V
V
V
SWDRV_SW
SWDRV_gate
SINK
that is
L6460