Texas Instruments TPS61020DRC, TPS61024DRC, TPS61025DRC, TPS61026DRC, TPS61027DRC Schematic [ru]
...
(3,25 mm x 3,25 mm)
www.ti.com
SW
C1
10 µF
L1
6.8 µH
R1
R2
VBAT
VOUT
FB
C2
2.2 µFC347 µF
LBO
PGND
LBI
PS
EN
GND
TPS61020
V
O
3.3 V Up To
200 mA
Low Battery
Output
R3
R4
R5
0.9-V To
6.5-V Input
TPS61020 , , TPS61024 , , TPS61025
TPS61026 , TPS61027 , TPS61028
SLVS451D – SEPTEMBER 2003 – REVISED FEBRUARY 2006
96% EFFICIENT SYNCHRONOUS BOOST CONVERTER
FEATURES DESCRIPTION
• 96% Efficient Synchronous Boost Converter
• Output Voltage Remains Regulated When
Input Voltage Exceeds Nominal Output
Voltage
• Device Quiescent Current: 25 µA (Typ)
• Input Voltage Range: 0.9 V to 6.5 V
• Fixed and Adjustable Output Voltage Options
Up to 5.5 V
• Power Save Mode for Improved Efficiency at
Low Output Power
• Low Battery Comparator
• Low EMI-Converter (Integrated Antiringing
Switch)
• Load Disconnect During Shutdown
• Over-Temperature Protection depending on the device version.
• Small 3 mm × 3 mm QFN-10 Package
APPLICATIONS
• All One-Cell, Two-Cell and Three-Cell Alkaline,
NiCd or NiMH or Single-Cell Li Battery
Powered Products
• Portable Audio Players
• PDAs
• Cellular Phones
• Personal Medical Products
• Camera White LED Flash Light
The TPS6102x devices provide a power supply
solution for products powered by either a one-cell,
two-cell, or three-cell alkaline, NiCd or NiMH, or
one-cell Li-Ion or Li-polymer battery. Output currents
can go as high as 200 mA while using a single-cell
alkaline, and discharge it down to 0.9 V. It can also
be used for generating 5 V at 500 mA from a 3.3-V
rail or a Li-Ion battery. The boost converter is based
on a fixed frequency, pulse-width-modulation (PWM)
controller using a synchronous rectifier to obtain
maximum efficiency. At low load currents the
converter enters the Power Save mode to maintain a
high efficiency over a wide load current range. The
Power Save mode can be disabled, forcing the
converter to operate at a fixed switching frequency.
The maximum peak current in the boost switch is
limited to a value of 800 mA, 1500 mA or 1800mA
The TPS6102x devices keep the output voltage
regulated even when the input voltage exceeds the
nominal output voltage. The output voltage can be
programmed by an external resistor divider, or is
fixed internally on the chip. The converter can be
disabled to minimize battery drain. During shutdown,
the load is completely disconnected from the battery.
A low-EMI mode is implemented to reduce ringing
and, in effect, lower radiated electromagnetic energy
when the converter enters the discontinuous
conduction mode. The device is packaged in a 10-pin
QFN PowerPAD™ package measuring 3 mm x 3 mm
(DRC).
TPS61029
PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright © 2003–2006, Texas Instruments Incorporated
www.ti.com
TPS61020 , , TPS61024 , , TPS61025
TPS61026 , TPS61027 , TPS61028
TPS61029
SLVS451D – SEPTEMBER 2003 – REVISED FEBRUARY 2006
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
AVAILABLE OUTPUT VOLTAGE OPTIONS
T
A
–40 ° C to 85 ° C 3.0 V 1500 mA BDS 10-Pin QFN TPS61024DRC
(1) Contact the factory to check availability of other fixed output voltage versions.
(2) The DRC package is available taped and reeled. Add R suffix to device type (e.g., TPS61020DRCR) to order quantities of 3000 devices
per reel. Add a T suffix to the device type (i.e., TPS61020DRCT) to order quantities of 250 devices per reel.
OUTPUT
VOLTAGE PACKAGE PART NUMBER
DC/DC
Adjustable 1500 mA BDR TPS61020DRC
Adjustable 800 mA BNE TPS61028DRC
Adjustable 1800 mA BRF TPS61029DRC
3.3 V 1500 mA BDT TPS61025DRC
5 V 1800 mA BRD TPS61026DRC
5 V 1500 mA BDU TPS61027DRC
NOMINAL SWITCH PACKAGE
CURRENT LIMIT MARKING
(1)
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted)
Input voltage range on SW, VOUT, LBO, VBAT, PS, EN, FB, LBI –0.3 V to 7 V
Operating virtual junction temperature range, T
Storage temperature range, T
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating
conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliabilitiy.
stg
J
(1)
TPS6102x
–40 ° C to 150 ° C
–65 ° C to 150 ° C
(2)
DISSIPATION RATINGS TABLE
PACKAGE
DRC 48.7 ° C/W 2054 mW 21 mW/ ° C
THERMAL RESISTANCE POWER RATING DERATING FACTOR ABOVE
Θ
JA
TA≤ 25 ° C TA= 25 ° C
RECOMMENDED OPERATING CONDITIONS
MIN NOM MAX UNIT
Supply voltage at VBAT, VI(TPS61020, TPS61024, TPS61025, TPS61028) 0.9 6.5 V
Supply voltage at VBAT, VI(TPS61026, TPS61029) 0.9 5.5 V
Operating free air temperature range, T
Operating virtual junction temperature range, T
A
J
–40 85 ° C
–40 125 ° C
2
Submit Documentation Feedback
www.ti.com
TPS61020 , , TPS61024 , , TPS61025
TPS61026 , TPS61027 , TPS61028
SLVS451D – SEPTEMBER 2003 – REVISED FEBRUARY 2006
ELECTRICAL CHARACTERISTICS
over recommended free-air temperature range and over recommended input voltage range (typical at an ambient temperature
range of 25 ° C) (unless otherwise noted)
DC/DC STAGE
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Minimum input voltage for start-up RL= 120 Ω 0.9 1.2 V
V
TPS61024, TPS61025, TPS61027, TPS61028)
I
Input voltage range, after start-up (TPS61026,
TPS61029)
Input voltage range, after start-up (TPS61020,
V
V
TPS61020, TPS61028 and TPS61029 output
O
voltage range
TPS61020, TPS61028 and TPS61029 feedback
FB
voltage
f Oscillator frequency 480 600 720 kHz
I
I
I
Switch current limit (TPS61020, TPS61024,
SW
TPS61025, TPS61027)
Switch current limit (TPS61028) VOUT= 3.3 V 800 mA
SW
Switch current limit (TPS61026, TPS61029) VOUT= 3.3 V 1500 1800 2100 mA
SW
VOUT= 3.3 V 1200 1500 1800 mA
Start-up current limit 0.4 x I
SWN switch on resistance VOUT= 3.3 V 260 m Ω
SWP switch on resistance VOUT= 3.3 V 290 m Ω
Total accuracy (including line and load regulation) ± 3%
Line regulation 0.6%
Load regulation 0.6%
Quiescent current
VBAT 1 3 µA
VOUT 25 45 µA
Shutdown current 0.1 1 µA
IO= 0 mA, V
VOUT = 3.3 V, TA= 25 ° C
V
= 0 V, VBAT = 1.2 V,
EN
TA= 25 ° C
= VBAT = 1.2 V,
EN
0.9 6.5 V
0.9 5.5 V
1.8 5.5 V
490 500 510 mV
SW
TPS61029
mA
CONTROL STAGE
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
Under voltage lockout threshold V
UVLO
V
LBI voltage threshold V
IL
voltage decreasing 0.8 V
LBI
voltage decreasing 490 500 510 mV
LBI
LBI input hysteresis 10 mV
LBI input current EN = VBAT or GND 0.01 0.1 µA
V
LBO output low voltage VO= 3.3 V, IOI= 100 µA 0.04 0.4 V
OL
V
LBO output leakage current V
lkg
V
EN, PS input low voltage 0.2 × VBAT V
IL
V
EN, PS input high voltage 0.8 × VBAT V
IH
= 7 V 0.01 0.1 µA
LBO
EN, PS input current Clamped on GND or VBAT 0.01 0.1 µA
Overtemperature protection 140 ° C
Overtemperature hysteresis 20 ° C
Submit Documentation Feedback
3
www.ti.com
FB
LBO
GND
VBAT
SW
VOUT
LBI
PS
EN
PGND
DRC PACKAGE
(TOP VIEW)
TPS61020 , , TPS61024 , , TPS61025
TPS61026 , TPS61027 , TPS61028
TPS61029
SLVS451D – SEPTEMBER 2003 – REVISED FEBRUARY 2006
PIN ASSIGNMENTS
Terminal Functions
TERMINAL
NAME NO.
EN 1 I Enable input. (1/VBAT enabled, 0/GND disabled)
FB 3 I Voltage feedback of adjustable versions
GND 5 Control / logic ground
LBI 7 I Low battery comparator input (comparator enabled with EN), may not be left floating, should be connected to
LBO 4 O Low battery comparator output (open drain)
PS 8 I Enable/disable power save mode (1/VBAT disabled, 0/GND enabled)
SW 9 I Boost and rectifying switch input
PGND 10 Power ground
VBAT 6 I Supply voltage
VOUT 2 O Boost converter output
PowerPAD™ Must be soldered to achieve appropriate power dissipation. Should be connected to PGND.
I/O DESCRIPTION
GND or VBAT if comparator is not used
4
Submit Documentation Feedback
www.ti.com
Anti-
Ringing
Gate
Control
PGND
Regulator
Error
Amplifier
PGND
Control Logic
Oscillator
Temperature
Control
VOUT
PGND
FB
SW
VBAT
EN
PS
GND
LBI
_
+
_
+
Backgate
Control
V
max
Control
VOUT
10 kΩ
20 pF
_
+
V
ref
= 0.5 V
GND
LDO
Low Battery
Comparator
_
+
V
ref
= 0.5 V
GND
FUNCTIONAL BLOCK DIAGRAM (TPS61020, TPS61028, TPS61029)
TPS61020 , , TPS61024 , , TPS61025
TPS61026 , TPS61027 , TPS61028
TPS61029
SLVS451D – SEPTEMBER 2003 – REVISED FEBRUARY 2006
Submit Documentation Feedback
5
www.ti.com
SW
C1
10 µF
Power
Supply
L1
6.8 µH
R1
R2
VBAT
VOUT
FB
C2
2.2 µFC347 µF
LBO
PGND
LBI
PS
EN
GND
TPS6102x
List of Components:
U1 = TPS6102xDRC
L1 = EPCOS B82462−G4682
C1, C2 = X7R/X5R Ceramic
C3 = Low ESR Tantalum
V
CC
Boost Output
Control Output
R3
R4
R5
TPS61020 , , TPS61024 , , TPS61025
TPS61026 , TPS61027 , TPS61028
TPS61029
SLVS451D – SEPTEMBER 2003 – REVISED FEBRUARY 2006
PARAMETER MEASUREMENT INFORMATION
TYPICAL CHARACTERISTICS
Table of Graphs
Maximum output current vs Input voltage 1
vs Output current (TPS61020) 2
vs Output current (TPS61025) 3
Efficiency vs Output current (TPS61027) 4
vs Input voltage (TPS61025) 5
vs Input voltage (TPS61027) 6
Output voltage
No load supply current into VBAT vs Input voltage 9
No load supply current into VOUT vs Input voltage 10
Waveforms
vs Output current (TPS61025) 7
vs Output current (TPS61027) 8
Output voltage in continuous mode (TPS61025) 11
Output voltage in continuous mode (TPS61027) 12
Output voltage in power save mode (TPS61025) 13
Output voltage in power save mode (TPS61027) 14
Load transient response (TPS61025) 15
Load transient response (TPS61027) 16
Line transient response (TPS61025) 17
Line transient response (TPS61027) 18
Start-up after enable (TPS61025) 19
Start-up after enable (TPS61027) 20
FIGURE
6
Submit Documentation Feedback
www.ti.com
0
200
400
600
800
1000
1200
1400
0.9 1.7 2.5 3.3 4.1
Maximum Output Current - mA
4.9 6.55.7
VI - Input Voltage - V
VO = 3.3 V
VO = 5 V
VO = 1.8 V
0
10
20
30
40
50
60
70
80
90
100
1 10 100 1000
VBAT = 0.9 V
VBAT = 1.8 V
VO = 1.8 V
Efficiency - %
IO - Output Current - mA
0
10
20
30
40
50
60
70
80
90
100
1 10 100 1000
Efficiency - %
IO - Output Current - mA
VBAT = 2.4 V
VBAT = 0.9 V
VO = 3.3 V
VBAT = 1.8 V
0
10
20
30
40
50
60
70
80
90
100
1 10 100 1000
Efficiency - %
IO - Output Current - mA
VBAT = 1.2 V
VBAT = 3.6 V
VBAT = 2.4 V
VO = 5 V
VBAT = 1.8 V
TPS61020 , , TPS61024 , , TPS61025
TPS61026 , TPS61027 , TPS61028
TPS61029
SLVS451D – SEPTEMBER 2003 – REVISED FEBRUARY 2006
MAXIMUM OUTPUT CURRENT TPS61020
vs EFFICIENCY
INPUT VOLTAGE vs
Figure 1. Figure 2.
TPS61025 TPS61027
EFFICIENCY EFFICIENCY
vs vs
OUTPUT CURRENT OUTPUT CURRENT
OUTPUT CURRENT
Figure 3. Figure 4.
Submit Documentation Feedback
7
www.ti.com
50
55
60
65
70
75
80
85
90
95
100
0.9 1.4 1.9 2.4 2.9 3.4 3.9 4.4 4.9
Efficiency - %
VI - Input Voltage - V
IO = 100 mA
VO = 3.3 V
IO = 10 mA
IO = 250 mA
50
55
60
65
70
75
80
85
90
95
100
0.9 1.4 1.9 2.4 2.9 3.4 3.9 4.4 4.9 5.4 5.9
Efficiency - %
VI - Input Voltage - V
IO = 100 mA
VO = 5 V
IO = 250 mA
IO = 10 mA
6.4
3.20
3.25
3.30
3.35
1 10 100 1000
- Output Voltage - V
V
O
IO - Output Current - mA
VBAT = 2.4 V
VO = 3.3 V
- Output Voltage - V
V
O
IO - Output Current - mA
VBAT = 3.6 V
4.80
4.85
4.90
4.95
5
5.05
5.10
1 10 100 1000
VO = 5 V
TPS61020 , , TPS61024 , , TPS61025
TPS61026 , TPS61027 , TPS61028
TPS61029
SLVS451D – SEPTEMBER 2003 – REVISED FEBRUARY 2006
TPS61025 TPS61027
EFFICIENCY EFFICIENCY
vs vs
INPUT VOLTAGE INPUT VOLTAGE
TPS61025 TPS61027
OUTPUT VOLTAGE OUTPUT VOLTAGE
OUTPUT CURRENT OUTPUT CURRENT
8
Figure 5. Figure 6.
vs vs
Figure 7. Figure 8.
Submit Documentation Feedback
www.ti.com
0.9 1.5 2 2.5 3 3.5 4
No Load Supply Current Into VOUT -
4.5 5 6 6.55.5
VI- Input Voltage - V
Aµ
-0.2
4.8
9.8
14.8
19.8
24.8
29.8
34.8
TA = 85°C
TA = -40°C
TA = 25°C
0
0.2
0.4
0.6
0.8
1.2
1.6
0.9 1.5 2 2.5 3 3.5 4
No Load Supply Current Into VBAT -
4.5 5 6 6.55.5
VI- Input Voltage - V
Aµ
TA = 85°C
TA = 25°C
1
1.4
TA = -40°C
t - Time - 1 µs/div
VI = 3.6 V ,
RL = 25 Ω,
VO = 5 V
Output Voltage
20 mV/div
Inductor Current
200 mA/div
t - Time - 1 µs/div
VI = 1.2 V ,
RL = 33 Ω,
VO = 3.3 V
Output Voltage
20 mV/div
Inductor Current
200 mA/div
TPS61020 , , TPS61024 , , TPS61025
TPS61026 , TPS61027 , TPS61028
TPS61029
SLVS451D – SEPTEMBER 2003 – REVISED FEBRUARY 2006
NO LOAD SUPPLY CURRENT INTO VBAT NO LOAD SUPPLY CURRENT INTO VOUT
OUTPUT VOLTAGE IN CONTINUOUS MODE OUTPUT VOLTAGE IN CONTINUOUS MODE
vs vs
INPUT VOLTAGE INPUT VOLTAGE
Figure 9. Figure 10.
TPS61025 TPS61027
Figure 11. Figure 12.
Submit Documentation Feedback
9
Loading...