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): 15/32頁(yè)
文件大?。?/td> 812K
代理商: L6725TR
Demoboard
L6725 - L6725A
22/32
7
Demoboard
7.1
20A board description
L6725 demoboard realizes in a four 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
20A. The switching frequency is set at 250kHz (controller free-running FBSWB) but it can be
set to 500kHz acting on the EAREF pin.
Figure 16. Demoboard schematic
GOUT
R2
GIN
L1
Q1-3
Q4-6
D3
5
U1
L6725
VIN
VOUT
8
OCH
C11
R9
C9
9
10
6
7
HGATE
PHASE
LGATE
PGND
3
VCC
12
VCC
2
SS
C4
BOOT
D1
11
VCCDR
C10
1
VFB
COMP
R3
R1
C1
C2
C3
R4
R7
4
EAREF
C7
R8
16
15
GND
OCL
R10
R11
C12-C13
C16-C19
C5
R6
R5
C8
J1
R12
C15
EXT REF
J2
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