參數(shù)資料
型號(hào)： L6710TR
廠商： STMICROELECTRONICS
元件分類(lèi)： 穩(wěn)壓器
英文描述： 2 A SWITCHING CONTROLLER, PQFP44
封裝： 10 X 10 MM, 1 MM HEIGHT, TQFP-44
文件頁(yè)數(shù)： 20/34頁(yè)
文件大?。?/td> 1610K
代理商： L6710TR
27/34
L6710
Figure 20. Demo Board Schematic
Figure 21. Power supply configuration
Two main configurations can be distinguished: Single Supply (VCC=VIN=12V) and Double Supply
(VCC=12V VIN=5V or different).
– Single Supply: In this case JP6 has to be completely shorted. The device is supplied with the same
rail that is used for the conversion. With an additional zener diode DZ1 a lower voltage can be derived
to supply the mosfets driver if Logic level mosfet are used. In this case JP1 must be left open so that
the HS driver is supplied with VIN-VDZ1 through BOOTx and JP2 must be shorted to the left to use
VIN or to the right to use VIN-VDZ1 to supply the LS driver through VCCDR pin. Otherwise, JP1 must
be shorted and JP2 can be freely shorted in one of the two positions.
– Double Supply: In this case VCC supply directly the controller (12V) while VIN supplies the HS drains
for the power conversion. This last one can start indifferently from the 5V bus (Typ.) or from other
buses allowing maximum flexibility in the power conversion. Supply for the mosfet driver can be pro-
grammed through the jumpers JP1, JP2 and JP6 as previously illustrated. JP6 selects now VCC or
VIN depending on the requirements.
Some examples are reported in the following Figures 22 and 23.
L6710
U1
PGOOD
PGND
PGNDS
ISEN2
LGATE2
VSEN
FB
PHASE2
UGATE2
BOOT2
VCC
COMP
SGND
OSC
VID0
VID1
VID2
VID3
VID4
ISEN1
LGATE1
PHASE1
UGATE1
BOOT1
VCCDR
5
31
35
36
38
21
20
41
3
43
42
40
19
28
27
26
24
25
6, 7
39
30
13
9
8
17
18
FBR
FBG
22
C1
R8
C2
R4
R3
Q3
Q4
C3
L2
C7
R11
D3
C6
C11..C14
C15,
C24
R1
JP3
R2
S1
S0
S3
S2
S4
R5
R6
Q1
L1
Q2
C4
D4
C5
Vin
GNDin
GNDCORE
VoutCORE
PGOOD
FBG
FBR
DZ1
C8
JP2
JP1
R13
R15
R12
R14
C9,C10
R9
R18
D1
R17
R16
Q1a
Q3a
D2
R19
R20
JP5
JP4
Vcc
GNDcc
JP6
To
Vcc pin
R21
VID5
29
S5
14
REF_OUT
12
OUTEN
To
PGNDS
C25
R10
L6710 EVALUATION BOARD REV.1
NTC1
R22
To
Vcc pin
C26
OUTEN
R7a
R7
JP7
JP8
C28
Vin
GNDin
DZ1
JP2
JP1
Vcc
GNDcc
JP6
To Vcc pin
To HS Drains (Power Input)
To BOOTx (HS Driver Supply)
To VCCDR pin (LS Driver Supply)
相關(guān)PDF資料
PDF描述
L6713ATR 2 A SWITCHING CONTROLLER, 225 kHz SWITCHING FREQ-MAX, PQFP64
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