DA9313 datasheet(29/54 Pages) DIALOG

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DA9313

High Efficiency Dual Cell Switched Capacitor Divider

Datasheet

Revision 3.0

07-Apr-2017

CFR0011-120-00

29 of 54

10.3.4

PVC Power Down

During PVC power down, the PVC does not switch and the flying capacitors CFLY are connected in

parallel to the output capacitor CLOAD. An internal pull-down is used to ensure the PVC is in a defined

start condition. When the output voltage drops below the threshold of 1 V, the PVC can accept a re-

start.

In master/slave configuration, power down is synchronized by the master/slave interface (MS_IF) in a

way where both devices connect the flying capacitors (CFLY) in parallel to the output capacitor (CLOAD)

at the same time. These capacitors are discharged by the master.

10.3.5

PVC Current Limit

The configurable integrated current limit is aimed to protect DA9313’s power stages and the external

components from excessive current.

When hitting the current limit ILIM_PVC (configured in PVC_ILIM) DA9313 enters FAULT RECOVERY.

DA9313 provides an indication that the system current is approaching the critical limit, before hitting

the current limit itself, allowing an active host processor to take some countermeasures.

When the warning threshold IALARM is reached the event E_PVC_OC_WARN is generated. The status

of the over-current alarm comparator can be read back on FAULT_LOG via the I

2C control interface.

DA9313 Datasheet(PDF) 29 Page - Dialog Semiconductor