CS1630-FSZ datasheet(43/56 Pages) APEX

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CS1630/31

DS954F2

6.32 Configuration 50 (Config50) – Address 82

6.33 Configuration 51 (Config51) – Address 83

654

OVP_CNT2

OVP_CNT1

OVP_CNT0

OVP_LAT

OVP_TYPE

OVP_BLANK2 OVP_BLANK1 OVP_BLANK0

Number

Name

Description

[7:5]

OVP_CNT[2:0]

Sets the second stage OVP fault counter threshold used when declaring a

fault.

0 = Force OVP fault (debug only)

1-7 = Number of times an OVP fault has to occur consecutively before

the IC will enter a fault state.

[4]

OVP_LAT

Configures second stage OVP fault type.

0 = Unlatched fault

1 = Latched fault

[3]

OVP_TYPE

Selects the type of blanking for the second stage OVP. When bit

OVP_TYPE is set to T2 offset, the blanking time is always equal to the cor-

responding channel’s previous T2 switching cycle time minus an offset of

500ns.

0 = Fixed time blanking mode

1 = T2 offset blanking mode.

[2:0]

OVP_BLANK[2:0]

Configures fixed time blanking interval tOVP for output open protection,

OVP. The value is an unsigned integer in the range of 0

value7.

654

RESTART5

RESTART4

RESTART3

RESTART2

RESTART1

RESTART0 FAULT_SLOW FAULT_SHDN

Number

Name

Description

[7:2]

RESTART[5:0]

Set fault restart time TRestart for second stage faults that are set as unlatched

type. If slow restart bit FAULT_SLOW is enabled, then

else

[1]

FAULT_SLOW

Configures slow restart for second stage faults that are set at unlatched type.

0 = Disable slow restart; use 25.6

s timer for restart time countdown

1 = Enable slow restart; use 40.96ms timer for restart time countdown

[0]

FAULT_SHDN

Selects which stages to disable when a fault event occurs in the second stage.

0 = Shutdown second stage only

1 = Shutdown boost stage and second stage

tOVP

s

OVP_BLANK



[2:0] 0.5

s 



TRestart

RESTART[5:0] 40.96ms



TRestart

RESTART[5:0] 25.6

s



CS1630-FSZ 数据表(PDF) 43 Page - Cirrus Logic

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