L6460 STMicroelectronics, L6460 Datasheet - Page 77

• 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
the regulated current: the voltage provided at the I
internal reference. L6460 has the possibility to choose between four voltage references
using the serial interface, writing the SelCurrRef[1:0] bits in the Aux3SwCfg1 register.
Regardless of the CurrRef voltage, if the I
the internal current limitation will work (typical Ilimit current 4A).
The battery charge profile can be chosen by fixing the desired CurrRef and FBRef internal
reference voltages and by choosing the desired V = f(I) trans-characteristic of the external
differential amplifier.
In the
Figure 22. Li-ion battery charge profile
The battery charge loop control can be used to implement a buck type switching regulator.
The regulated output voltage will be externally set by a resistor divider network connected to
V
internally in the Bridge4 section.
Veochrg
Iprechrg
REF_FB
Ieochrg
Vchrg
Ichrg
Voltage
Figure 22
pin, as already described and the current protection will be the one implemented
or
Current
Precharge
phase
is shown a typical Li-Ion battery charge profile.
Rapid charge
Doc ID 17713 Rev 1
phase
REF_FB
Constant V.
pin remains below the chosen threshold,
Blue=Battery Voltage
Red=Battery Current
REF_FB
phase
pin will be compared to the
End Of Charge
CurrRef depending
FBRef depending
Power bridges
Time
77/139