L6713A STMicroelectronics, L6713A Datasheet - Page 48

• Manufacturer Part Number: L6713A
• Description: IC CTRLR 2/3PH W/DRIVERS 64-TQFP
• Manufacturer: STMicroelectronics

Specifications of L6713A

• Applications: Controller, Intel VR10, VR11, AMD CPU
• Voltage - Input: 12V
• Number Of Outputs: 3
• Voltage - Output: 0.3 ~ 1.6 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 64-TQFP Exposed Pad, 64-eTQFP, 64-HTQFP, 64-VQFP
• Output Current: 2 A
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Output voltage monitor and protections
17.3
17.4
48/64
Figure 22. Output voltage protections and typical principle connections
Over voltage and programmable OVP
Once VCC crosses the turn-ON threshold and the device is enabled (OUTEN = 1), L6713A
provides an over voltage protection: when the voltage sensed by VSEN overcomes the OVP
threshold, the controller permanently switches on all the low-side MOSFETs and switches
OFF all the high-side MOSFETs in order to protect the load. The OSC/ FAULT pin is driven
high (5 V) and power supply or OUTEN pin cycling is required to restart operations.The OVP
Threshold varies according to the operative mode selected
The OVP threshold can be also programmed through the OVP pin: leaving the pin floating, it
is internally pulled-up and the OVP threshold is set according to
OVP pin to SGND through a resistor R
at the pin. Since the OVP pin sources a constant I
programmed voltage becomes:
Filter OVP pin with 100 pF(max) vs. SGND.
PGOOD (only for AMD mode)
It is an open-drain signal set free after the soft-start sequence has finished. It is pulled low
when the output voltage drops below -300 mV of the programmed voltage.
UVLO
UVLO
VCC
OVP
V cc
VSEN Monitored
Preliminary OVP
(OUTEN = 0)
Preliminary OVP Enabled
VSEN Monitored
No Protection
Provided
OVP
Programmable OVP
VSEN Monitored
TH
(OUTEN = 1)
=
R
OVP
OVP
, the OVP threshold becomes the voltage present
⋅
12.5μA
OVP
+5V
+12V
SB
= 12.5 μA
⇒
BAT54C
(See Table
R
OVP
Table
current(See Table
=
OVP
------------------- -
12.5μA
2.2Ω
2.2Ω
12. Connecting the
12).
TH
1μF
VCC
VCCDR1
VCCDR2
VCCDR3
5), the
L6713A