STEVAL-ISA051V2 STMicroelectronics, STEVAL-ISA051V2 Datasheet - Page 45
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STEVAL-ISA051V2
Manufacturer Part Number
STEVAL-ISA051V2
Description
BOARD EVAL PM6670AS DDR2/3
Manufacturer
STMicroelectronics
Type
DC/DC Switching Converters, Regulators & Controllersr
Specifications of STEVAL-ISA051V2
Design Resources
STEVAL-ISA051V2 Gerber Files STEVAL-ISA051V2 Schematic STEVAL-ISA051V2 Bill of Material
Main Purpose
Special Purpose DC/DC, DDR Memory Supply
Outputs And Type
4, Non-Isolated
Voltage - Output
1.5V, 1.8V
Voltage - Input
4.5 ~ 36V
Regulator Topology
Buck
Board Type
Fully Populated
Utilized Ic / Part
PM6670A
Input Voltage
4.5 V to 36 V
Output Voltage
1.8 V, 1.5 V
Product
Power Management Modules
Silicon Manufacturer
ST Micro
Silicon Core Number
PM6670AS
Kit Application Type
Power Management
Application Sub Type
DDR2/3 Memory Power Supply Controller
Kit Contents
Board
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Output
-
Power - Output
-
Frequency - Switching
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
For Use With/related Products
PM6670AS
Other names
497-8412
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
STEVAL-ISA051V2
Manufacturer:
STMicroelectronics
Quantity:
1
PM6670AS
8.1.5
Tested low-side MOSFETs are listed in
Table 17.
Dual N-MOS can be used in applications with lower output current.
Table 18
Table 18.
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 19.
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 19
R
R
voltage (V)
Doc ID 14436 Rev 2
DSon
DSon
Forward
13.5
0.34
0.34
4.0
25
46
24
(mΩ)
(mΩ)
shows some evaluated diodes.
Table 17
Gate charge (nC)
Rated reverse
.
voltage (V)
C
GD
0.069
0.011
0.054
30
30
10
33
\ C
GS
INmax
and a minimum recovery
Application information
Rated reverse voltage (V)
Rated reverse voltage (V)
Reverse current (μA)
0.00039
0.00039
30
30
30
30
30
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