IR3513Z International Rectifier Corp., IR3513Z Datasheet - Page 24

• Manufacturer Part Number: IR3513Z
• Description: Xphase3tm Pol Control Ic
• Manufacturer: International Rectifier Corp.

ROSC/OVP
Error Amp
& IIN drive
Discharge
high until
OV clears
Disabled
Clearing
Method
SS/DEL
PGood
Delay?
Fault Table
The Fault Table below describes the different faults that can occur and how IR3513Z would react to protect the supply
and the load from possible damage. The fault types that can occur are listed in row 1. Row 2 has the method that a fault
is cleared. The first 4 faults are latched in the UV fault latch and the VCCL power has to be recycled by switching off the
input and switching it back on for the converter to work again. The rest of the faults (except for UVLO Vout) are latched
in the SS fault latch and do not need to recycle the VCCL power in order for IR3513Z to resume operation. IR3513Z will
automatically resume operation when these fault conditions no longer apply in the system. Most of the faults disable the
error amplifier (EA) and discharge the soft start capacitor. All the faults flag PGood. PGood returns back to high when
the faults are cleared. The delay row shows how long it takes IR3513Z to react after detecting a fault condition. Delays
are provided to minimize the possibility of nuisance faults.
Fault table
Flags
Fault
Page 24
Open
Daisy
Pulses
Clock
30
PHSOUT
Control
Pulses
Open
Loop
No
8
Recycle VCCL
Sense
Open
Line
No
Voltage
Over
Yes
No
Yes
Yes
Fault Type
Disable
250 ns
Blank
Time
Yes
Resume Normal Operation when Condition Clears
UVLO
VCC
No
VCCL
UVLO
No
Programm
PHSOUT
Start-up
Pulses.
Before
ROSC
Count
ed by
value
OC
May 11, 2009
IR3513Z
Discharge
Threshold
OC After
Start-up
SS/DEL
VOUT
UVLO
No
No
No