STEVAL-ISA039V1 STMicroelectronics, STEVAL-ISA039V1 Datasheet - Page 5

• Manufacturer Part Number: STEVAL-ISA039V1
• Description: BOARD EVAL BASED ON L6727
• Manufacturer: STMicroelectronics
• Type: DC/DC Switching Converters, Regulators & Controllersr

Specifications of STEVAL-ISA039V1

• Design Resources: STEVAL-ISA039V1 Gerber Files L6727 Eval Board Schematic STEVAL-ISA039V1 Bill of Materials
• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 1.25V
• Current - Output: 5A
• Voltage - Input: 5 ~ 12V
• Regulator Topology: Buck
• Frequency - Switching: 300kHz
• Board Type: Fully Populated
• Utilized Ic / Part: L6727
• 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: L6727
• Other names: 497-8266

L6727
2
2.1
Pins description and connection diagrams
Figure 3.
Pin descriptions
Table 2.
Pin #
1
2
3
4
5
6
7
8
COMP / DIS
PHASE
UGATE
Pins connection (top view)
Pins descriptions
LGATE
BOOT
Name
GND
VCC
/ OC
FB
UGATE
LGATE
BOOT
GND
HS driver supply.
Connect through a capacitor (100 nF) to the floating node (LS-drain) pin
and provide necessary bootstrap diode from VCC.
HS driver output. Connect to HS MOSFET gate.
All internal references, logic and drivers are connected to this pin.
Connect to the PCB ground plane.
LS driver output. Connect to LS MOSFET gate.
Device and LS driver power supply.
Operative range from 4.1 V to 13.2 V. Filter with at least 1μF MLCC to GND.
Error Amplifier Inverting Input.
Connect with a resistor R
resistor R
reference.
COMP. Error amplifier output. Connect with an R
compensate the control-loop.
DIS. The device can be disabled by forcing this pin lower than 0.5V(typ). To
disable the device, the external pull-down need to overcome 10mA of
COMP output current for about 15 μs. Once disabled, COMP output current
drops to 20 μA.
OC. Over current threshold set. Connect with an R
(ONLY IF VCC is supplied by 5 V bus) to program OC threshold. When
VCC > 5V, R
HS driver return path, current-reading and adaptive-dead-time monitor.
Connect to the LS drain to sense R
This pin is also used by the adaptive-dead-time control circuitry to monitor
when HS MOSFET is OFF.
Doc ID 12933 Rev 4
OS
1
2
3
4
OCSET
to GND may be used to regulate voltages higher than the
L6727
need to be not-connected.
Pins description and connection diagrams
FB
8
7
6
5
to the output regulated voltage. Additional
Function
PHASE
COMP / DIS / OC
FB
VCC
dsON
drop to measure the output current.
F
- C
OCSET
F
// C
resistor to VCC
P
to FB to
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