STEVAL-ISA052V1 STMicroelectronics, STEVAL-ISA052V1 Datasheet - Page 45

• Manufacturer Part Number: STEVAL-ISA052V1
• Description: KIT EVAL PM6675S HE CTLR 2A REG
• Manufacturer: STMicroelectronics

Specifications of STEVAL-ISA052V1

• Main Purpose: DC/DC, Step Down with LDO
• Outputs And Type: 2, Non-Isolated
• Voltage - Output: 1.5V, 0.6 ~ 3.3V
• Current - Output: 10A, 2A
• Voltage - Input: 4.5 ~ 28 V
• Regulator Topology: Buck
• Board Type: Fully Populated
• Utilized Ic / Part: PM6675
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Frequency - Switching: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-8426

PM6675S
8.1.5
Table 15.
Dual N-MOS can be used in applications with lower output current.
Table 16
Table 16.
Diode selection
A rectifier across the synchronous switch is recommended. The rectifier works as a voltage
clamp across the synchronous rectifier and reduces the negative inductor swing during the
dead time between turning the high-side MOSFET off and the synchronous rectifier on.
Moreover it increases the efficiency of the system.
Choose a schottky diode as long as its forward voltage drop is very little (0.3 V). The reverse
voltage should be greater than the maximum input voltage V
reverse charge is preferable.
Table 17.
Manufacturer
Manufacturer
Manufacturer
ST
ST
ST
IR
ST
ST
IR
shows some suitable dual MOSFETs for applications requiring about 3 A.
Evaluated low-side MOSFETs
Suitable dual MOSFETs
Evaluated recirculation rectifiers
STS8DNH3LL
STS12NH3LL
STS25NH3LL
STPS1L30M
STPS1L30A
IRF7313
IRF7811
Type
Type
Type
Table 17
R
R
voltage (V)
DS(on)
DSon
Forward
0.34
0.34
13.5
25
46
4.0
24
(mΩ)
(mΩ)
shows some evaluated diodes.
Gate charge (nC)
Rated reverse
voltage (V)
C
GD
0.069
0.011
0.054
30
30
10
33
\ C
GS
INmax
Rated reverse voltage (V)
and a minimum recovery
Application information
Rated reverse voltage (V)
Reverse current (µA)
0.00039
0.00039
30
30
30
30
30
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