STEVAL-ISA027V1 STMicroelectronics, STEVAL-ISA027V1 Datasheet - Page 14
![BOARD EVAL 1PH STPDN CONV L6726A](/photos/9/13/91314/steval-isa027v1_sml.jpg)
STEVAL-ISA027V1
Manufacturer Part Number
STEVAL-ISA027V1
Description
BOARD EVAL 1PH STPDN CONV L6726A
Manufacturer
STMicroelectronics
Type
DC/DC Switching Converters, Regulators & Controllersr
Specifications of STEVAL-ISA027V1
Design Resources
STEVAL-ISA027V1 Gerber Files STEVAL-ISA027V1 Schematic STEVAL-ISA027V1 Bill of Material
Main Purpose
DC/DC, Step Down
Outputs And Type
1, Non-Isolated
Voltage - Output
1.25V
Current - Output
20A
Voltage - Input
5 ~ 12V
Regulator Topology
Buck
Frequency - Switching
270kHz
Board Type
Fully Populated
Utilized Ic / Part
L6726A
Input Voltage
5 V to 12 V
Output Voltage
1.25 V
Product
Power Management Modules
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
For Use With/related Products
L6726A
Other names
497-6259
Protections
7.3
14/35
Figure 6.
Undervoltage lock out
In order to avoid anomalous behaviors of the device when the supply voltage is too low to
support its internal rails, UVLO is provided: the device will start up when VCC reaches
UVLO upper threshold and will shutdown when VCC drops below UVLO lower threshold.
The 4.1 V maximum UVLO upper threshold allows L6726A to be supplied from 5 V and 12 V
busses in or-ing diode configuration.
Figure 7.
bottom edge
Enable Th
PWM ramp
UVLO Th
700mV
LGATE
COMP
VCC
OC threshold setting procedure timings (top) and waveforms (bottom)
OCP trip, default threshold, LS: STD38NH02L (left) UVLO turn off (right)
Setting Procedure
R
5.5ms - 6.5ms
OCSET
connected
Doc ID 12754 Rev 4
t
DELAY
bottom edge
Enable Th
PWM ramp
UVLO Th
700mV
LGATE
Setting Procedure
VCC
COMP
R
OCSET
not connected
t
DELAY
L6726A