參數(shù)資料
型號(hào): L6732
廠商: STMICROELECTRONICS
元件分類(lèi): 穩(wěn)壓器
英文描述: SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
封裝: LEAD FREE, HTSSOP-16
文件頁(yè)數(shù): 20/37頁(yè)
文件大?。?/td> 898K
代理商: L6732
L6732
L6732 demonstration board
27/37
7
L6732 demonstration board
7.1
20 A board description and PCB layout
L6732 20 A demonstration board 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 4.5 V to 14 V and the output voltage is at 3.3 V. The module can deliver an
output current in excess of 20 A. The switching frequency is set at 250 kHz (controller free-
running Fsw) but it can be set to 500 kHz acting on the EAREF pin.
Figure 20.
Demonstration board schematic
L1
Q1-3
Q4-6
D3
9
U1
L6732
VIN
VOUT
12
OCH
C11
GOUT
R9
C9
13
14
10
11
HGATE
PHASE
LGATE
PGND
7
VCC
16
VCC
6
SS
C4
BOOT
D1
15
VCCDR
C10
5
VFB
COMP
R3
R1
C1
R2
C2
C3
R4
R7
8
EAREF
C7
R8
4
3
GND
GIN
OCL
R10
R11
C12-C13
C16-C19
C5
R6
R5
C8
J1
R12
C15
EXT REF
J2
PGOOD
SYNCH
1
2
SYNCH
VCCDR
PGOOD
R13
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