L6460 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'L6460' PDF : 139 Pages View PDF
Start-up configurations
L6460
8.6.2
8.6.3
8.6.4
8.6.5
Primary regulator mode (KP)
In this configuration bridge 4 can be configured by firmware while bridge 3 is configured as
two separate synchronous switching regulators. The last regulator in the sequence
(VAUX2_SW) is not considered a system regulator.
When in this mode the power-up sequence is:
1. Auxiliary switching regulator1 (VAUX1_SW).
2. Main switching regulator (VSWmain) together with main linear regulator (VLINmain).
3. Auxiliary switching regulator2 (VAUX2_SW) (Not system regulator).
Regulators mode
In this configuration bridge 4 can be configured by firmware while bridge 3 is configured as
two separate synchronous switching regulators, but the start up sequence is different
previous one.
When in this mode the power-up sequence is:
1. Main switching regulator (VSWmain).
2. Auxiliary switching regulator1 (VAUX1_SW)
3. Auxiliary switching regulator2 (VAUX2_SW)
Simple regulator mode (KT)
Also in this configuration bridge 4 can be configured by firmware while bridge 3 is configured
as two separate synchronous switching regulators. The last regulator in the sequence
(VSWmain) is not considered a system regulator.
When in this mode the power-up sequence is:
1. Auxiliary switching regulator1 (VAUX1_SW).
2. Auxiliary switching regulator2 (VAUX2_SW)
3. Main linear regulator (VLINmain)
4. Main switching regulator (VSWmain) (not system regulator).
Bridge + VEXT mode
In this configuration bridges 3 and 4 are not used as regulators and the regulator obtained
using the switching regulator controller (VSWDRV) is included in start-up.
When in this mode the power-up sequence is:
1. Main switching regulator (VSWmain).
2. Switching regulator controller regulator (VSWDRV).
3. Main linear regulator (VLINmain).
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Doc ID 17713 Rev 1
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