IR3510MTRPBF International Rectifier, IR3510MTRPBF Datasheet - Page 26

• Manufacturer Part Number: IR3510MTRPBF
• Description: IC XPHASE CONTROL 32-MLPQ
• Manufacturer: International Rectifier
• Series: XPhase™r

Specifications of IR3510MTRPBF

• Applications: Processor
• Mounting Type: Surface Mount
• Package / Case: 32-MLPQ
• Package: 32-Lead MLPQ
• Circuit: X-Phase Control IC
• Pbf: PbF Option Available
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Voltage - Supply: -
• Operating Temperature: -
• Other names: IR3510MTRPBFTR

Open Remote Sense Line Protection
If either remote sense line VOSEN+ or VOSEN- or both are open, the output of remote sense amplifier (VO) drops.
The open-sense comparator monitors VO pin voltage continuously. If VO voltage is lower than 200 mV, two
separate pulse currents are applied to VOSEN+ and VOSEN- pins respectively to check if the sense lines are open.
If VOSEN+ is open, a voltage higher than 90% of VBIAS will be present at VOSEN+ pin and the output of open line
detect comparator will be high. If VOSEN- is open, a voltage higher than 700mV will be present at VOSEN- pin and
the output of open-line-detect comparator will be high. The open sense line fault latch is set, which pulls error
amplifier output low immediately and shut down the voltage regulator.
The open sense protection circuit has limited current source, it may not be high enough to charge the open sense
line up to the threshold voltage if there is a differential or common mode cap on these two remote sense lines. In
this case, an alternative external open-sense protection circuit may be needed.
12V
Enable
UVLO2
P12V
Vss
EAOUT
Vout
VRRDY
ORING
Iout
Page 26 of 36
IN
Soft-Start
UVLO2
3.8V
VRM
Fig. 14b Good module OVP response
Vth
1.3V
IR Confidential
3.6V
OVP
Vset
Vth
Bot
OVP
FET
OVP
On
Removed
No
Fault
May 18, 2009
Latch
IR3510