參數(shù)資料
型號(hào)： TPS5103IDBR
英文描述： SMPS Controller
中文描述： 開(kāi)關(guān)電源控制器
文件頁(yè)數(shù)： 14/31頁(yè)
文件大?。?/td> 1083K
代理商： TPS5103IDBR
TPS5102
DUAL, HIGH-EFFICIENCY CONTROLLER FOR NOTEBOOK PC POWER
SLVS239 - SEPTEMBER 1999
14
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
The design shown in this application report is a reference design for notebook applications. An evaluation
module (EVM), TPS5102EVM-135 (SLVP135), is available for customer testing and evaluation. The intent is
to allow a customer to fully evaluate the given design using the plug-in EVM supply shown here. For subsequent
customer board revisions, the EVM design can be copied onto the users’ PCB to shorten design cycle.
The following key design procedures will aid in the design of the notebook power supply using the TPS5102:
TP4
TP5
TP6
TP7
TP8
TP9
TP10
TP11
TP12
TP13
TP14
TP15
TP3
TP2
TP1
C7
R6
R4
R3
C6
TP27
SLVP135 EVM
TP22
TP23
TP24
C17
D3
Q1
TP26
R17
Q2
TP18
C21
TP16
TP17
TP21
TP20
TP19
TP25
Q3
C20
D4
Q4
R20
R21
C18
R18
R19
C19
TP28
C16
R16
R15
R11
C14
R12
JP2
JP1
R10
R8
C12
C13
C15
C10
R9
C11
R14
R13
C9
R5
C8
D1
C2
L1
+
C4
R1
+
C22
J1
J2
J3
J4
J5
J6
J7
J8
J9
J10
J11
J12
J13
J14
RS1
Vo1
Vo1
Vo1GND
Vo1GND
Vin
Vin
Input GND
Input GND
Vo2GND
Vo2GND
Vo2
Vo2
RS2
+
C5
D2
J16GND
J15GND
+
C23
+
C1
R2
L2
C3
Vin
Iin
Vo1
Io1
Vo2
Io2
6 V to 15 V
6 A
3.3 V
4 A
5 V
4 A
16 V to 25 V
3.3 V
2.5 A
5 V
2.5 A
output voltage setpoint calculation
The output voltage is set by the reference voltage and the voltage divider. In the TPS5102, the reference voltage
is 1.185-V, and the divider is composed of two resistors in the EVM design that are R4 and R5, or R14 and R15.
The equation for the setpoint is:
R2
R1
Vo–Vr
Vr
Where R1 is the top resistor (k
) ( R4 or R15); R2 is the bottom resistor (k
) ( R5 or R14); Vo is the required
output voltage (V); Vr is the reference voltage (1.185 V in TPS5102).
Example: R1 = 1 k
; Vr = 1.185 V; Vo = 3.3 V, then R2 = 560
.
Some of the most popular output voltage setpoints are calculated in the table below:
VO
1.3 V
1.5 V
1.8 V
2.5 V
3.3 V
5 V
R1 (top) (k
)
R2 (bottom) (k
)
1 V
1 V
1 V
1 V
1 V
1 V
10 V
3.7 V
1.9 V
0.9 V
0.56 V
0.31 V
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TPS5110 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:3-A SINK/ SOURCE DDR TERMINATION REGULATOR
TPS51100 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:3-A SINK/SOURCE DDR TERMINATION REGULATOR
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