EVALA5973AD STMicroelectronics, EVALA5973AD Datasheet - Page 26

• Manufacturer Part Number: EVALA5973AD
• Description: Power Management Modules & Development Tools EVAL BOARD A5973AD Auto Grade
• Manufacturer: STMicroelectronics
• Type: DC/DC Switching Converters, Regulators & Controllersr

Specifications of EVALA5973AD

• Input Voltage: 4.4 V to 36 V
• Output Voltage: 1.235 V to 35 V
• Board Size: 23 mm x 20 mm
• Product: Power Management Modules
• Supply Current: 2.5 A
• Dimensions: 23 mm x 20 mm
• For Use With/related Products: AN1518
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Application ideas
10.3
10.4
26/30
Figure 25. Buck-boost regulator
Dual output voltage with auxiliary winding
When two output voltages are required, it is possible to create a dual output voltage
converter by using a coupled inductor. During the ON phase, the current is delivered to
V
the auxiliary winding, to the output voltage V
has stored sufficient energy. So, to be certain that the application is working properly, the
load related to the second output V
Figure 26. Dual output voltage with auxiliary winding
Synchronization example
Two or more devices (up to 6) can be synchronized simply by connecting the
synchronization pins. In this case, the device with a slightly higher switching frequency value
will work as a master and the ones with slightly lower switching frequency values will work
as slaves. The device can also be synchronized from an external source. In this case the
logic signal must have a frequency higher than the internal switching frequency of the device
(250 kHz).
OUT
while D2 is reverse-biased. During the OFF phase, the current is delivered, through
OUT1
should be much lower than the load related to V
OUT1
. This is possible only if the magnetic core
AN1518
OUT
.