STEVAL-ISA063V1 STMicroelectronics, STEVAL-ISA063V1 Datasheet - Page 14

• Manufacturer Part Number: STEVAL-ISA063V1
• Description: BOARD EVAL BASED ON STBB1XX
• Manufacturer: STMicroelectronics

Specifications of STEVAL-ISA063V1

• Main Purpose: DC/DC, Step Up or Down
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 1.2 ~ 5.5 V
• Current - Output: 1A
• Voltage - Input: 2 ~ 5.5 V
• Regulator Topology: Buck-Boost
• Frequency - Switching: 1.5MHz
• Board Type: Fully Populated
• Utilized Ic / Part: STBB1
• Product: Power Management Modules
• Silicon Manufacturer: ST Micro
• Silicon Core Number: STBB1XX
• Kit Application Type: Power Management - Voltage Regulator
• Application Sub Type: Buck/Boost DC-DC Converter
• Kit Contents: Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-9008

Application information
8.3
14/21
The minimum inductor value for the application is the higher between
Equation 3
handle must be calculated in order to avoid saturation.
Equation 4
Equation 5
Where η is the estimated efficiency of STBB1. The maximum of the two values above must
be considered when selecting the inductor.
Input and output capacitor selection
It is recommended to use ceramic capacitors with low ESR as input and output capacitors in
order to filter any disturbance present in the input line and to obtain stable operation.
Minimum values of 10 µF for both capacitors are needed to achieve good behavior of the
device.
The input capacitor must be placed as close as possible to the device.
I
I
PEAK
PEAK
−
−
BOOST
BUCK
. In addition to the inductance value the maximum current the inductor can
=
=
I (
VOUT
OUT
η
×
VIN
/
η
×
)
I
MIN
+
OUT
VOUT
+
2
VIN
Doc ID 15474 Rev 5
×
×
VIN
MIN
(
2
VIN
×
MAX
×
VOUT
(
MAX
VOUT
×
fs
−
×
VOUT
×
fs
−
L
VIN
×
L
)
MIN
)
Equation 2
STBB1XX
and