Texas Instruments | 12Vin C642x Power using Integrated-FET DC/DC Converters and LDO | Application notes | Texas Instruments 12Vin C642x Power using Integrated-FET DC/DC Converters and LDO Application notes

Texas Instruments 12Vin C642x Power using Integrated-FET DC/DC Converters and LDO Application notes
T. Olabumuyi
T. Olabumuyi
Filename: PMP4024REVB_bom.xls
Date: 08/27/2008
PMP4024REVB BOM
COUNT
RefDes
Value
Description
Size
Part Number
MFR
Capacitor, Ceramic, 25V, X5R, 20%
Capacitor, Ceramic, 10-pF, 50-V, C0G, 5%
C1, C8, C10, C11
C101
C12, C13, C14,
C15
C2, C3
C4, C6, C7
C5
C9
J1, J2, J3, J4
J5, J8
10uF
10pF
1206
0603
C3216X5R1E106
C1608C0G1H100DB
TDK
TDK
Open
1.0uF
22 uF
open
10pF
PTC36SAAN
PTC36SAAN
Capacitor, Ceramic, 10V, X5R, 20%
Capacitor, Ceramic, 25V, X7R, 10%
Capacitor, Ceramic, 10V, X5R, 20%
Capacitor, Ceramic, open, 10V, X5R, 20%
Capacitor, Ceramic, 50V, C0G, 5%
Header, Male 6-pin, 100mil spacing, (36-pin strip)
Header, 2-pin, 100mil spacing, (36-pin strip)
1206
0603
1206
1206
0603
0.100 inch x 6
0.100 x 2
Std
C1608X7R1E105K
C3216X5R1A226
C3216X5R1A226
C1608C0G1H100DB
PTC36SAAN
PTC36SAAN
Std
TDK
TDK
TDK
TDK
Sullins
Sullins
PTC36SAAN
6.8uH
Header, 3-pin, 100mil spacing, (36-pin strip)
Inductor, SMT, 3.67A, 41.8 milliohm
0.100 x 3
0.276 x 0.276 inch
PTC36SAAN
DR74-6R8-R
Sullins
Coiltronics
5
1
1
1
1
1
1
2
3
2
2
JP1, JP2, JP3, JP4
L1, L2
R1, R5, R7, R13,
R15
R10
R18
R2
R20
R21
R4
R6, R14
R8, R16, R17
SH1, SH2
U1, U2
open
0
562K
402K
Open
16.2k
301K
0
1.00M
0603
1206
0603
0603
0603
0603
0603
0603
0603
Std
CRCW1206R510FKEA
Std
Std
Std
Std
Std
Std
Std
Std
Vishay
Std
Std
Std
Std
Std
Std
Std
TPS62110RSA
Resistor, Chip, open, 1/16-W, 1%
Resistor, Chip, short, 1/2W, 1%
Resistor, Chip, 562k, 1/16-W, 1%
Resistor, Chip, 402K, 1/16-W, 1%
Resistor, Chip, 1/16-W, 1%
Resistor, Chip, 16.2k, 1/16-W, 1%
Resistor, Chip, 301k, 1/16-W, 1%
Resistor, Chip, short, 1/16-W, 1%
Resistor, Chip, 1/16-W, 1%
Short jumper
IC, Synchronous Step-Down Converter, 17V, 1.2A
QFN-16
TPS62110RSA
TI
1
1
1
1
1
2
1
1
C25
C26
C27
J7
R33
TP28, TP30
TP29
U5
0.1uF
2.2uF
0.01uF
ED1609-ND
10k
5000
5001
TPS73018DBVR
Capacitor, Ceramic, 0.1-uF, 50-V, X7R, 15%
0603
Capacitor, Ceramic, 16V, X7R
0805
Capacitor, Ceramic, 0.01uF, 50-V, X7R, 15%
0603
Terminal Block, 2-pin, 15-A, 5.1mm
0.40 x 0.35
Resistor, Chip, 1/16W, 1%
0603
Test Point, Red, Thru Hole Color Keyed
0.100 x 0.100 inch
Test Point, Black, Thru Hole Color Keyed
0.100 x 0.100 inch
IC, UltraLow-Noise, High PSRR, Fast RF 200 mA, LDO Regulator
SOT23-6
Std
std
Std
ED1609
Std
5000
5001
TPS73018DBVR
TDK
std
TDK
1.2V and 3.3V SWIFT
4
1
4
2
3
1
1
4
2
4
2
1.8V LDO
Std
Keystone
Keystone
TI
9/11/2008
C642x – TPS62110 (x 2) & TPS73018 Test Report
C642x – TPS62110 & TPS73018 - (PMP4024-RevB)
9/15/08
The following test report includes measurements for the following output voltage rails using a 12V input:
A.
B.
Start Up Waveform for all outputs
1.2V @ 1.48A Using the TPS62110 Device
1.
2.
3.
4.
5.
C.
3.3V @ 0.18A Using the TPS62110 Device
1.
2.
3.
4.
5.
D.
Page 1 of 14
Output Voltage Ripple (Measured Full Load)
Load Transient (25% to 100% Load Step)
Load Regulation
Efficiency
Switch Node
Output Voltage Ripple (Measured Full Load)
Load Transient (25% to 100% Load Step)
Load Regulation
Efficiency
Switch Node
1.8V @ 0.14A Using the TPS73018 Device - LDO
1. Output Voltage Ripple (Measured Full Load)
2. Load Transient (25% to 100% Load Step)
Texas Instruments Power Management Solutions
9/11/2008
C642x – TPS62110 (x 2) & TPS73018 Test Report
A Start Up Waveform All Outputs – TPS 62110 & TPS73018
Sequence is 3.3V, 1.8V and 1.2V, with 12Vin
Channel 2: 3.3V DC/DC –green - TPS62110 – 2V/Div
Channel 1: 1.8V LDO – orange - TPS 73018 -2V/Div
Channel 3: 1.2V DC/DC – red - TPS62110 -2V/Div
Page 2 of 14
Texas Instruments Power Management Solutions
9/11/2008
C642x – TPS62110 (x 2) & TPS73018 Test Report
B. 1.2V @ 1.48A – TPS 62110 – DCDC
1 Output Ripple Voltage for 1.2V @ 1.48A (TPS62110)
The photo below shows the output voltage ripple. The input voltage is 12V.
Channel 1: 1.2V Output - Orange (20mV/Division; AC Coupled)
Channel 2: 1.2V Output – Green (1V/Division, DC Coupled)
Channel 4: Output Current – Blue (1A/Division. DC Coupled)
1.48A External Load; 1us/Division
Page 3 of 14
Texas Instruments Power Management Solutions
9/11/2008
C642x – TPS62110 (x 2) & TPS73018 Test Report
2 Load Transients – 1.2V @ 1.48A (TPS62110)
25% to 100% Load Step
The photo below shows the transient response. The current is pulsed from 0.37A to 1.48A. The input
voltage is 12V. The time-base is set to 200us/Division.
Channel 1: 1.2V Output - Orange (50mV/Division; AC Coupled)
Channel2: 1.2V Output – Green (1V/Division, DC Coupled)
Channel 4: Output Current - Blue (1A/Division)
Page 4 of 14
Texas Instruments Power Management Solutions
9/11/2008
C642x – TPS62110 (x 2) & TPS73018 Test Report
3 Load Regulation (TPS62110)
The load regulation is shown in the figure below. The input voltage is 12V.
1.2V@1.48A Output Voltage vs. Load Current
1.212
Output Voltage (V)
1.208
1.204
1.200
1.196
1.192
1.188
0
0.2
0.4
0.6
0.8
1
1.2
1.4
Load Current (A)
Page 5 of 14
Texas Instruments Power Management Solutions
1.6
9/11/2008
C642x – TPS62110 (x 2) & TPS73018 Test Report
4 Efficiency (TPS62110)
The efficiency is shown in the figure below. The input voltage is 12V.
1.2V@1.48A Efficiency vs. Load Current
90%
Efficiency
80%
70%
60%
50%
40%
30%
0
0.2
0.4
0.6
0.8
1
1.2
1.4
Load Current (A)
Page 6 of 14
Texas Instruments Power Management Solutions
1.6
9/11/2008
C642x – TPS62110 (x 2) & TPS73018 Test Report
5 Switch Node Waveforms 1.2V @ 1.48A (TPS62110)
The plot below shows the switching waveforms for the converter. The input is 12V.
Channel 1: Switch Node - Orange (10V/Division)
)
Switchnode 1.2V@1.48A External Load,
Page 7 of 14
Texas Instruments Power Management Solutions
9/11/2008
C642x – TPS62110 (x 2) & TPS73018 Test Report
C. 3.3V @ 0.18A – TPS 62110 – DCDC
1 Output Ripple Voltage for 3.3V @ 0.18A (TPS62110)
The photo below shows the output voltage ripple. The input voltage is 12V.
Channel 1: 3.3V Output - Orange (20mV/Division; AC Coupled)
Channel 3: 3.3V Output – Green (2V/Division, DC Coupled)
Channel 4: Output Current – Blue (100 mA/Division. DC Coupled)
3.3V @ 0.18A External Load; 1us/Division
Page 8 of 14
Texas Instruments Power Management Solutions
9/11/2008
C642x – TPS62110 (x 2) & TPS73018 Test Report
2 Load Transients – 3.3V @ 0.18A (TPS62110)
The photo below shows the transient response. The current is pulsed from 0.04A to 0.18A. The input
voltage is 12V. The time-base is set to 200us/Division.
Channel 1: 1.2V Output - Orange (20mV/Division; AC Coupled)
Channel 2: 3.3V Output – Green (2V/Division, DC Coupled)
Channel 4: Output Current - Blue (100mA/ Division)
Page 9 of 14
Texas Instruments Power Management Solutions
9/11/2008
C642x – TPS62110 (x 2) & TPS73018 Test Report
3 Load Regulation (TPS62110)
The load regulation is shown in the figure below. The input voltage is 12V.
3.3V@0.18A Output Voltage vs. Load Current
3.356
Output Voltage
3.354
3.352
3.350
3.348
3.346
3.344
3.342
0
0.05
0.1
0.15
0.2
Load Current (A)
Page 10 of 14
Texas Instruments Power Management Solutions
0.25
9/11/2008
C642x – TPS62110 (x 2) & TPS73018 Test Report
4 Efficiency (TPS62110)
The efficiency is shown in the figure below. The input voltage is 12V.
3.3V@0.18A Efficiency vs. Load Current
100%
95%
Efficiency
90%
85%
80%
75%
70%
65%
0
0.05
0.1
0.15
Load Current (A)
Page 11 of 14
Texas Instruments Power Management Solutions
0.2
9/11/2008
C642x – TPS62110 (x 2) & TPS73018 Test Report
5 Switch Node Waveforms 3.3V @ 0.18A (TPS62110)
The plot below shows the switching waveforms for the converter. The input is 12V.
Channel 1: Switch Node - Orange (10V/Division)
Switchnode 3.3V@0.18A External Load,
Page 12 of 14
Texas Instruments Power Management Solutions
9/11/2008
C642x – TPS62110 (x 2) & TPS73018 Test Report
D. 1.8V @ 0.14A – TPS 73018 – LDO
1. Output Ripple Voltage for 1.8V @ 0.14A LDO (TPS73018)
The photo below shows the output voltage ripple. The input voltage is 12V.
Channel 1: 1.8V Output - Orange (20mV/Division; AC Coupled)
Channel 3: 1.8V Output – Red (2V/Division, DC Coupled)
Channel 4: Current Output – Blue (100mA/Division)
1.8V@0.14A External Load; 5us/Division
Page 13 of 14
Texas Instruments Power Management Solutions
9/11/2008
C642x – TPS62110 (x 2) & TPS73018 Test Report
2. Load Transients – 1.8V @ 0.14A TPS 73018
25% to 100% Load Step
The photo below shows the transient response. The current is pulsed from 0.035A to 0.14A. The input
voltage is 12V. The time-base is set to 200us/Division.
Channel 1: 1.8V Output - Orange (20mV/Division; AC Coupled)
Channel 2: 1.8V Output - Green (1V/Division; DC Coupled)
Channel 4: Output Current - Blue (100mA/Division)
Page 14 of 14
Texas Instruments Power Management Solutions
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising