参数资料
型号: E-L6911ETR
厂商: STMICROELECTRONICS
元件分类: 稳压器
英文描述: 1.3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20
封装: SO-20
文件页数: 17/35页
文件大小: 563K
代理商: E-L6911ETR
VRM demo board description
L6911E
24/34
6
VRM demo board description
Figure 12 shows the schematic circuit of the VRM evaluation board. The design has been
developed for a VRM 8.5 Flexible Motherboard applicaton delivering up to 28.5A.
An additional circuit sense a Vtt bus (1.2V typ.) and generate a 2.5mS (typ.) delayed
Vtt_PWRGD signal when this rail is over 1.1V. The assertion of the Vtt_PWRGD signal
enables the device together with the ENOUT input.
Figure 12. Schematic circuit
L6911E CONNECTOR EVALUATION KIT REV. 1.1
L2
L1
R7
R8
R9
C1-3
C10
C4-9
C17
Q3,Q4,Q5
Q1,Q2
D2
C12
F1
16
17
13
14
2
4
5
6
7
8
U1
L6911E
+5 VIN
+12Vcc
VOUTCORE
Vss
10
15
9
3
20
18
11
19
12
1
VCC
GND
VID0
VID1
VID2
VID3
VID4
SS
OSC
OCSET
UGATE
PHASE
LGATE
PGND
PGOOD
VSEN
VFB
CO
M
P
R3
R4
R5
R2
C18
C19
C20
VID0
VID1
VID2
VID3
VID25mV
C11
D1
R6
R1
Vtt_PGOOD
UZ
TLC7701
8
2
4
7
3
5
6
OV
P
1
OUTEN
Vtt_sense
Vdd
NOT RESIN
GND
SENSE
CT
NOT RESET
CONTROL
RESET
R14
C15
R12
Q6
R10
R11
C16
C14
Q7
C13
R13
D3
PWRGD
R15
BO
O
T
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