TPPM0115 Datasheet, PDF (11/13 Pages) Texas Instruments – SWITCH MODE SYNCHRONOUS BUCK CONTROLLER

TPPM0115
SWITCH MODE SYNCHRONOUS BUCK CONTROLLER
APPLICATION INFORMATION
SLVS371A– MARCH 2001 – REVISED JUNE 2001
VCC
1.7 µH
0.1 µF
4.7 µF
4.7 µF
1000 µF
1000 µF
12V Supply
1 _VCC
GND ⁸
1 µF
TPPM0115
2 _{PWRGD SEN} 7
20 kΩ
3 _NC
DRVL ⁶
4 _{PHASE DRVH} 5
PHD55N03LT
4 µH
680pF
PHD55N03LT
1500 µF
Low ESR
2.2 Ω
4700 pF
1500 µF
Low ESR
4.7 µF
0.1 µF
250 Ω
1%
1 kΩ
1%
V 2P5 MEM
VCORE
4.7 µF
0.1 µF
220 µF
Low ESR
FQD13N06L
VCC
4
5_{+ 1}
LMV321
–³
2
P-Channel
J1
300 Ω
1%
321
175 Ω
1%
450 Ω
1%
0.1 µF
1 µF
J1: 1 and 2 = 1.8 V VCORE
J1: 2 and 3 = 1.5 V VCORE
NOTES: A. The heavy lines must be kept short and connected to the ground plane construction for efficient results.
B. The performance of the regulator depends on the proper selection of the external components for the application.
Figure 10. Application Schematic for RAMBUS Memory V_DDQ and V_CORE Supplies
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