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TPS40140RHHT Datasheet(PDF) 40 Page - Texas Instruments

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Part No. TPS40140RHHT
Description  Dual or 2-Phase, Stackable Controller
Download  68 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS40140RHHT Datasheet(HTML) 40 Page - Texas Instruments

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R7
10K
C11
2.2 n
R5
50
R9
50
VOUT1
BODE12
BODE11
R13
510k
R23
39K
VSHR R15
22.6K
R14
62K
R16
33K
C20
1uF
R18
698k
R19
50
R20
50
C21
1uF
C23
2.2n
BP5
BODE21
BODE21
R22
10K
R26
2.7k
R24
open
C27
open
C26
470pF
R29
10K
PG2
C37
0.022uF
TRK2
AGND1
C36
1uF
R8
8.66K
C7
330pF
C30
0.1uF
R28
10k
R31
10K
AGND2
C29
0.1uF
R21
4.7
U1
TPS40140RHH
C22
0.1uF
R17
4.7
D2
BAT54HT1
C24
0.1uF
C25
4.7uF
R27
10K
C13
0.1uF
C12
0.1uF
R12
4.7
D1
BAT54HT1
R6
10K
R32
10K
R33
10K
C6
1uF
C5
0.022uF
TRK1
R2
10k
C8
0.1uF
R3
open
C9
open
1
2
3
4
5
6
7
8
9
27
26
25
24
23
22
21
20
19
DIFFO
VOUT
GSNS
PHSEL
RT
VSHARE
GND
BP5
FB2
BOOT1
HDRV1
SW1
LDRV1
PGND
LDRV2
VREG
SW2
HDRV2
Q6
RJK0301DPB
Q8
RJK0305DPB
Q5
RJK0301DPB
Q7
Open
R30
10K
L2
1.5uH
R25
1
C28
3.3n
SW2
C31
220u
C32
220u
C33
220u
C34
220u
C35
22uF
GNDTP3
C41
22uF
C40
22uF
C39
22uF
C38
22uF
VOUT2
3.3V @ 20A
J10
4
3
2
1
J9
1.5V @ 20A
1
2
3
4
C14
220u
C15
220u
C16
220u
C17
220u
C18
22uF
R10
51.1
R11
51.1 VOUT1
J2
1
2
Remote Sense+
Remote Sense-
Q2
Open
Q4
RJK0301DPB
Q3
RJK0301DPB
Q1
RJK0305DPB
R4
1
C10
3.3n
SW1
12Vin +/- 10%
GND
J1
1
2
3
4
GNDTP1
C1
22uF
C2
22uF
C3
22uF
C4
22uF
R1
10K
L1
1uH
VOUT2
ILIM2
VSHR
PHSELIN
GSNS
RT
COMP1
TRK1
CS1
CSRT1
BP5
1
1
12VIN
UVLO1
UVLO1
CLKIO
VREG
1
1
1
1
1
1
1
VREG
BP5
COMP2
VOUT2
TRK2
PGOOD2
BP5
UVLO2
12VIN
VREG
BP5
1
2
3
1
2
3
1
2
3
1
2
3
4
4
4
5
5
4
5
5
12VIN
CS2
VOUT2
GSNS
VOUT1
CSRT1
CS1
12VIN
3
2
1
4
4
4
4
5
5
5
5
3
2
1
3
2
1
3
2
1
TPS40140
SLUS660I – SEPTEMBER 2005 – REVISED JANUARY 2015
www.ti.com
9.2 Typical Application
9.2.1 Application 1: Dual-Output Configuration from 12 to 3.3 V and 1.5 V DC-DC Converter Using a
TPS40140
Figure 40 shows the schematic of the dual output converter design.
Figure 40. Dual-Output Converter Schematic
9.2.1.1 Design Requirements
The following example shows the design process and component selection for a dual output synchronous buck
converter using TPS40140. Table 6 provides the design goal parameters. Only the calculated numbers for the
1.5-V output are shown, however, the equations are suitable for both channel design. A list of symbol definitions
is found at the end of this section.
Table 6. Design Goal Parameters
PARAMETER
TEST CONDITION
MIN
TYP
MAX
UNIT
VIN
Input voltage
10.8
12
13.2
V
VIN(ripple)
Input ripple voltage
IOUT = 20 A
0.15
V
VOUT
Output voltage
1.5
V
Line regulation
10.8 V
≤ VIN ≤ 13.2 V
0.5%
Load regulation
0 V
≤ IOUT ≤ 20 A
0.5%
VP-P
Output ripple voltage
IOUT = 20 A
30
mV
ΔVOUT
Output voltage deviation during load
ΔIOUT = 10 A, VIN = 12 V
80
mV
transient
IOUT
Output current
10.8 V
≤ VIN ≤ 13.2 V
0
20
A
η
Efficiency
IOUT = 20 A VIN = 12 V
87%
fSW
Switching frequency
500
kHz
40
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Copyright © 2005–2015, Texas Instruments Incorporated
Product Folder Links: TPS40140


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