參數(shù)資料
型號(hào): L6725TR
廠商: STMICROELECTRONICS
元件分類: 穩(wěn)壓器
英文描述: 20 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
封裝: SOP-16
文件頁(yè)數(shù): 19/32頁(yè)
文件大小: 812K
代理商: L6725TR
Demoboard
L6725 - L6725A
26/32
7.2
5A board description
L6725 demoboard realizes in a two layer PCB a step-down DC/DC converter and shows the
operation of the device in a general purpose application. The input voltage can range from 4.5V
to 14V and the output voltage is at 3.3V. The module can deliver an output current in excess of
5A. The switching frequency is set at 250kHz (controller free-running FBSWB) but it can be set
to 500kHz acting on the EAREF pin. Compared to the 20A version, the only difference of this
board, compared to the first one, is the presence of a dual mosfet chip, for the High-side and
Low-side MOSFETS; besides R13 has been inserted between High side MOSFET Gate and
Phase pin; R15 has been inserted between Low side mosfet Gate and Pgnd pin.
Table 9.
Demoboard part list
Reference
Value
Manufacturer
Package
Supplier
R1
1k
Neohm
SMD 0603
IFARCAD
R2
1k
Neohm
SMD 0603
IFARCAD
R3
4K7
R4
2k7
Neohm
SMD 0603
IFARCAD
R5
0
Neohm
SMD 0603
IFARCAD
R6
N.C.
Neohm
SMD 0603
IFARCAD
R7
4K99
Neohm
SMD 0603
IFARCAD
R8
10
Neohm
SMD 0603
IFARCAD
R9
2K49
Neohm
SMD 0603
IFARCAD
R10
2.2
Neohm
SMD 0603
IFARCAD
R11
2.2
Neohm
SMD 0603
IFARCAD
R12
N.C.
Neohm
SMD 0603
IFARCAD
R13
N.C.
Neohm
SMD 0603
IFARCAD
R15
N.C.
Neohm
SMD 0603
IFARCAD
C1
4.7nF
Kemet
SMD 0603
IFARCAD
C2
47nF
Kemet
SMD 0603
IFARCAD
C3
1nF
Kemet
SMD 0603
IFARCAD
C4
100nF
Kemet
SMD 0603
IFARCAD
C5
100nF
Kemet
SMD 0603
IFARCAD
C6
N.C.
/
C7
100nF
Kemet
SMD 0603
IFARCAD
C8
4.7uF 20V
AVX
SMA6032
IFARCAD
C9
1nF
Kemet
SMD 0603
IFARCAD
C10
1uF
Kemet
SMD 0603
IFARCAD
C11
220nF
Kemet
SMD 0603
IFARCAD
C12-13
3X 10uF
/
ST (TDK)
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