Texas Instruments TPS61092 User manual

SW
C1
10 µF
L1
6.8 µH
R1
R2
VBAT
VOUT
FB
C2
2.2 µFC3 100µF
LBO
PGND
LBI
SYNC
EN
GND
TPS6109x
e.g. 5 V up to
500 mA
Low Battery
Output
R3
R4 R5
1.8 V to 5 V
Input
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TPS61090 , TPS61091 , TPS61092
SLVS484C –JUNE 2003–REVISED DECEMBER 2014
TPS6109x Synchronous Boost Converter With 2-A Switch
1 Features 3 Description
The TPS6109x devices provide a power supply
1• Synchronous (96% Efficient) Boost Converter solution for products powered by either a one-cell Li-
With 500-mA Output Current From 1.8-V Input Ion or Li-Polymer, or a two-cell alkaline, NiCd or
• Available in a 16-Pin VQFN 4 x 4 Package NiMH battery and required supply currents up to or
• Device Quiescent Current: 20 µA (Typ) higher than 1 A. The converter generates a stable
output voltage that is either adjusted by an external
• Input Voltage Range: 1.8 V to 5.5 V resistor divider or fixed internally on the chip. It
• Adjustable Output Voltage Up to 5.5 V Fixed provides high efficient power conversion and is
Output Voltage Options capable of delivering output currents up to 0.5 A at 5
• Power Save Mode for Improved Efficiency at Low V at a supply voltage down to 1.8 V. The
Output Power implemented boost converter is based on a fixed
frequency, pulse-width- modulation (PWM) controller
• Low Battery Comparator using a synchronous rectifier to obtain maximum
• Low EMI-Converter (Integrated Antiringing Switch) efficiency. Boost switch and rectifier switch are
• Load Disconnect During Shutdown connected internally to provide the lowest leakage
inductance and best EMI behavior possible. The
• Over-Temperature Protection maximum peak current in the boost switch is limited
to a value of 2500 mA.
2 Applications The converter can be disabled to minimize battery
• All Single Cell Li or Dual Cell Battery or USB drain. During shutdown, the load is completely
Powered Operated Products disconnected from the battery. A low-EMI mode is
– MP3 Player implemented to reduce ringing and, in effect, lower
– PDAs radiated electromagnetic energy when the converter
enters the discontinuous conduction mode.
– Other Portable Equipment The output voltage can be programmed by an
external resistor divider or is fixed internally on the
chip.
The device is packaged in a 16-pin VQFN 4-mm x 4-
mm (16 RSA) package.
Device Information(1)
PART NUMBER PACKAGE BODY SIZE (NOM)
TPS61090
TPS61091 VQFN (10) 4.00 mm × 4.00 mm
TPS61092
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Application Schematic
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.

TPS61090 , TPS61091 , TPS61092
SLVS484C –JUNE 2003–REVISED DECEMBER 2014 www.ti.com
Table of Contents
9.4 Device Functional Modes........................................ 12
1 Features.................................................................. 110 Application and Implementation........................ 13
2 Applications ........................................................... 110.1 Application Information.......................................... 13
3 Description............................................................. 110.2 Typical Applications .............................................. 13
4 Revision History..................................................... 211 Power Supply Recommendations ..................... 19
5 Device Comparison Table..................................... 312 Layout................................................................... 19
6 Pin Configuration and Functions......................... 312.1 Layout Guidelines ................................................. 19
7 Specifications......................................................... 412.2 Layout Example .................................................... 19
7.1 Absolute Maximum Ratings ...................................... 412.3 Thermal Considerations........................................ 20
7.2 ESD Ratings.............................................................. 413 Device and Documentation Support................. 21
7.3 Recommended Operating Conditions....................... 413.1 Device Support...................................................... 21
7.4 Electrical Characteristics........................................... 413.2 Related Links ........................................................ 21
7.5 Typical Characteristics.............................................. 613.3 Trademarks........................................................... 21
8 Parameter Measurement Information .................. 913.4 Electrostatic Discharge Caution............................ 21
9 Detailed Description............................................ 10 13.5 Glossary................................................................ 21
9.1 Overview................................................................. 10 14 Mechanical, Packaging, and Orderable
9.2 Functional Block Diagram....................................... 10 Information ........................................................... 21
9.3 Feature Description................................................. 11
4 Revision History
Changes from Revision B (April 2005) to Revision C Page
• Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional
Modes,Application and Implementation section, Power Supply Recommendations section, Layout section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1
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LBOVOUT
VOUT
EN
SYNC
LBI
NC
SW
SW
VOUT
FB
GND
PGND
VBAT
PGND PGND
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5 Device Comparison Table
TAOUTPUT VOLTAGE DC-DC(1) PACKAGE PART NUMBER(2)
Adjustable 16-pin VQFN 4 mm × 4 mm TPS61090RSA
40°C to 85°C 3.3 V 16-pin VQFN 4 mm × 4 mm TPS61091RSA
5 V 16-pin VQFN 4 mm × 4 mm TPS61092RSA
(1) Contact the factory to check availability of other fixed output voltage versions.
(2) See Mechanical, Packaging, and Orderable Information for ordering information and tape and reel options.
6 Pin Configuration and Functions
RSA Package
10 Pins
Top View
Pin Functions
PIN I/O DESCRIPTION
NAME NO.
EN 11 I Enable input. (1/VBAT enabled, 0/GND disabled)
FB 14 I Voltage feedback of adjustable versions
GND 13 I/O Control/logic ground
LBI 9 I Low battery comparator input (comparator enabled with EN)
LBO 12 O Low battery comparator output (open drain)
NC 2 Not connected
PGND 5, 6, 7 I/O Power ground
PowerPAD™ — — Must be soldered to achieve appropriate power dissipation. Should be connected to PGND.
SYNC 10 I Enable/disable power save mode (1: VBAT disabled, 0: GND enabled, clock signal for
synchronization)
SW 3, 4 I Boost and rectifying switch input
VBAT 8 I Supply voltage
VOUT 1, 15, 16 O DC-DC output
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7 Specifications
7.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted)(1)
MIN MAX UNIT
Input voltage on LBI –0.3 3.6 V
Input voltage on SW, VOUT, LBO, VBAT, SYNC, EN, FB –0.3 7 V
TAOperating free air temperature –40 85 °C
TJMaximum junction temperature 150 °C
Tstg Storage temperature –65 150 °C
(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 reliability.
7.2 ESD Ratings VALUE UNIT
Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) ±2000
V(ESD) Electrostatic discharge V
Charged-device model (CDM), per JEDEC specification JESD22- ±1000
C101(2)
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. Manufacturing with
less than 500-V HBM is possible with the necessary precautions. Pins listed as ±XXX V may actually have higher performance.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. Manufacturing with
less than 250-V CDM is possible with the necessary precautions. Pins listed as ±YYY V may actually have higher performance.
7.3 Recommended Operating Conditions MIN NOM MAX UNIT
VISupply voltage at VBAT 1.8 5.5 V
L Inductance 2.2 6.8 µH
CiInput, capacitance 10 µF
CoOutput capacitance 22 100
TAOperating free air temperature –40 85 °C
TJOperating virtual junction temperature –40 125
7.4 Electrical Characteristics
over recommended free-air temperature range and over recommended input voltage range (typical values are at an ambient
temperature range of 25°C) (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
DC-DC STAGE
VIInput voltage range 1.8 5.5 V
VOTPS61090 output voltage range 1.8 5.5
VFB TPS61090 feedback voltage 490 500 510 mV
f Oscillator frequency 500 600 700 kHz
Frequency range for synchronization 500 700
ISW Switch current limit VOUT= 5 V 2000 2200 2500 mA
Start-up current limit 0.4 x ISW
Boost switch on resistance VOUT= 5 V 55 mΩ
Rectifying switch on resistance VOUT= 5 V 55
Total accuracy –3% 3%
Line regulation 0.6%
Load regulation 0.6%
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Electrical Characteristics (continued)
over recommended free-air temperature range and over recommended input voltage range (typical values are at an ambient
temperature range of 25°C) (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
into IO= 0 mA, VEN = VBAT = 1.8 V, VOUT =5 V 10 25
VBAT
Quiescent current into µA
IO= 0 mA, VEN = VBAT = 1.8 V, VOUT = 5 V 10 20
VOUT
Shutdown current VEN= 0 V, VBAT = 2.4 V 0.1 1
CONTROL STAGE
VUVL Under voltage lockout threshold VLBI voltage decreasing 1.5 V
O
VIL LBI voltage threshold VLBI voltage decreasing 490 500 510 mV
LBI input hysteresis 10
LBI input current EN = VBAT or GND 0.01 0.1 µA
LBO output low voltage VO= 3.3 V, IOI = 100 µA 0.04 0.4 V
LBO output low current 100 µA
LBO output leakage current VLBO = 7 V 0.01 0.1
VIL EN, SYNC input low voltage 0.2 ×
VBAT V
VIH EN, SYNC input high voltage 0.8 ×
VBAT
EN, SYNC input current Clamped on GND or VBAT 0.01 0.1 µA
Overtemperature protection 140 °C
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0
10
20
30
40
50
60
70
80
90
100
1 10 100 1000 10000
Efficiency - %
IO- Output Current - mA
VO= 2.5 V
VI= 1.8 V
VI= 1.8 V
VI= 2.4 V
0
10
20
30
40
50
60
70
80
90
100
1 10 100 1000 10000
Efficiency - %
IO- Output Current - mA
VO= 3.3 V
0
0.5
1
1.5
2
2.5
1.8 2.2 2.6 3 3.4 3.8 4.2 4.6 5
VI- Input Voltage - V
Maximum Output Current - A
0
0.5
1
1.5
2
2.5
1.8 2.2 2.6 3 3.4 3.8 4.2 4.6 5
VI- Input Voltage - V
Maximum Output Current - A
TPS61090 , TPS61091 , TPS61092
SLVS484C –JUNE 2003–REVISED DECEMBER 2014 www.ti.com
7.5 Typical Characteristics
Table 1. Table of Graphs
DC-DC Converter Figure
Figure 1,
Maximum output current vs Input voltage Figure 2
vs Output current (TPS61090) (VO= 2.5 V, VI= 1.8 V, VSYNC = 0 V) Figure 3
vs Output current (TPS61091) (VO= 3.3 V, VI= 1.8 V, 2.4 V, VSYNC = 0 V) Figure 4
Efficiency vs Output current (TPS61092) (VO= 5.0 V, VI= 2.4 V, 3.3 V, VSYNC = 0 V) Figure 5
vs Output current (TPS61091) (IO= 10 mA, 100 mA, 500 mA, VSYNC = 0 V) Figure 6
vs Output current (TPS61092) (IO= 10 mA, 100 mA, 500 mA, VSYNC = 0 V) Figure 7
vs Output current (TPS61091) (VI= 2.4 V) Figure 8
Output voltage vs Output current (TPS61092) (VI= 3.3 V) Figure 9
No-load supply current into VBAT Voltage (TPS61092) Figure 10
No-load supply current into VOUT vs Input voltage (TPS61092) Figure 11
Minimum Load Resistance at Start-Up vs Input Voltage (TPS61092) (VI= 3.3 V) Figure 12
Figure 1. TPS61091 Maximum Output Current vs Input Figure 2. TPS61092 Maximum Output Current vs Input
Voltage Voltage
Figure 4. TPS61091 Efficiency vs Output Current
Figure 3. TPS61090 Efficiency vs Output Current
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4.8
4.85
4.9
4.95
5
5.05
5.1
10 100 1000 10000
- Output Voltage - V
IO- Output Current - mA
VO
VBAT = 3.3 V
0
2
4
6
8
10
12
14
16
2 3 4 5
VI- Input Voltage - V
-40 C°
85 C°
25 C°
Aμ
No-Load Supply Current Into VBA
T -
50
55
60
65
70
75
80
85
90
95
100
1.8 2.2 2.6 3 3.4 3.8 4.2 4.6 5
Efficiency - %
VI- Input Voltage - V
IO= 100 mA
IO= 500 mA
IO= 10 mA
3.2
3.25
3.3
3.35
10 100 1000 10000
- Output Voltage - V
IO- Output Current - mA
VO
VBAT = 2.4 V
0
10
20
30
40
50
60
70
80
90
100
1 10 100 1000 10000
VI= 2.4 V
VI= 3.3 V
VO= 5 V
Efficiency - %
IO- Output Current - mA
50
80
90
100
Efficiency - %
VI- Input Voltage - V
IO= 10 mA
IO= 100 mA
1.8 2 2.6 2.8 32.2 2.4 3.2
60
IO= 500 mA
70
V = 5 V
O
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Figure 5. TPS61092 Efficiency vs Output Current Figure 6. TPS61091 Efficiency vs Output Current
Figure 8. TPS61091 Efficiency vs Output Current
Figure 7. TPS61092 Efficiency vs Output Current
Figure 10. TPS61092 No-Load Supply Current Into VBAT
Figure 9. TPS61092 Output Voltage vs Output Current Voltage
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VI- Input Voltage - V
-40 C°
85 C°
25 C°
Aμ
No-Load Supply Current Into VOUT -
0
2
4
6
8
10
12
14
16
1.8 2.2 2.6 3 3.4 3.8 4.2 4.6 5
0
5
10
15
20
25
1.8 2.2 2.6 3 3.4 3.8 4.2 4.6 5
Minimum Load resistance at Startup -
VI- Input Voltage - V
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Figure 11. TPS61092 No-Load Supply Current Into VOUT vs Figure 12. Minimum Load Resistance at Start-Up vs Input
Input Voltage Voltage
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SW
C1
10 mF
Power
Supply
L1
6.8 mH
R1
R2
VBAT
VOUT
FB
C2
2.2 mF
C3
100 mF
LBO
PGND
LBI
SYNC
EN
GND
TPS6109x
List of Components:
U1 = TPS6109xRSA
L1 = Sumida CDRH103R-6R8
C1, C2 = X7R/X5R Ceramic
C3 = Low ESR Tantalum
VOUT
Boost Output
Low Battery
Output
R3
R4 R5
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8 Parameter Measurement Information
Figure 13. Parameter Schematic
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Anti-
Ringing
Gate
Control
PGND
Regulator
PGND
Control Logic
Oscillator
Temperature
Control
VOUT
PGND
FB
SW
VBAT
EN
SYNC
GND
LBI
LBO
_
+
100 k
10 pF
_
+
VREF = 0.5 V
GND
Error Amplifier
_
+
_
+
GND
VREF = 0.5 V
Low Battery Comparator
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SLVS484C –JUNE 2003–REVISED DECEMBER 2014 www.ti.com
9 Detailed Description
9.1 Overview
The TPS6109x synchronous step-up converter typically operates at a 600-kHz frequency pulse width modulation
(PWM) at moderate to heavy load currents. The converter enters power save mode at low load currents to
maintain a high efficiency over a wide load. The power save mode can also be disabled, forcing the converter to
operate at a fixed switching frequency. The TPS6109x family is based on a fixed frequency with multiple feed
forward controller topology. Input voltage, output voltage, and voltage drop on the NMOS switch are monitored
and forwarded to the regulator. The peak current of the NMOS switch is also sensed to limit the maximum
current flowing through the switch and the inductor. It can also operate synchronized to an external clock signal
that is applied to the SYNC pin. Additionally, TPS6109x integrated the low-battery detector circuit typically used
to supervise the battery voltage and to generate an error flag when the battery voltage drops below a user-set
threshold voltage.
9.2 Functional Block Diagram
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