TPS60203 [TI]
REGULATED 3.3 V, 100-mA LOW-RIPPLE CHARGE PUMP LOW POWER DC/DC CONVERTERS; 调节3.3 V , 100 mA的低纹波充电泵低功耗DC / DC转换器型号: | TPS60203 |
厂家: | TEXAS INSTRUMENTS |
描述: | REGULATED 3.3 V, 100-mA LOW-RIPPLE CHARGE PUMP LOW POWER DC/DC CONVERTERS |
文件: | 总20页 (文件大小:436K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
TPS60200, TPS60201, TPS60202, TPS60203
REGULATED 3.3 V, 100-mA LOW-RIPPLE CHARGE PUMP
LOW POWER DC/DC CONVERTERS
SLVS274 – MARCH 2000
0.05 µA Shutdown Current, Battery Is
Isolated From Load in Shutdown Mode
features
Regulated 3.3-V Output Voltage With up to
100 mA Output Current From a 1.8 V to
3.6 V Input Voltage
Less Than 5 mV
Compact Converter Solution in Ultra-Small
10-pin MSOP With Only Four External
Capacitors Required
Output Voltage Ripple
(PP)
Evaluation Module Available
(TPS60200EVM-145)
Achieved With Push-Pull Topology
Integrated Low-Battery and Power-Good
Detector
applications
Switching Frequency Can Be Synchronized
to External Clock Signal
Replaces DC/DC Converters With Inductors
in Battery Powered Applications Like:
– Two Battery Cells to 3.3-V Conversion
– MP3 Portable Audio Players
– Battery-Powered Microprocessor
Systems
– Backup-Battery Boost Converters
– PDA’s, Organizers, Cordless Phones
– Handheld Instrumentation
Extends Battery Usage With up to 90%
Efficiency and 35 µA Quiescent Supply
Current
Reliable System Shutdown Because Output
Capacitor Is Discharged When Device Is
Disabled
Easy-To-Design, Low Cost, Low EMI Power
Supply Since No Inductors Are Used
– Glucose Meters and Other Medical
Instruments
·
description
The TPS6020x step-up, regulated charge pumps generate a 3.3-V ± 4% output voltage from a 1.8-V to 3.6-V
input voltage. The devices are typically powered by two Alkaline, NiCd or NiMH battery cells and operate down
to a minimum supply voltage of 1.6 V. Continuous output current is a minimum of 100 mA for the TPS60200 and
TPS60201 and 50 mA for the TPS60202 and TPS60203, all from a 2-V input. Only four external capacitors are
needed to build a complete low-ripple dc/dc converter. The push-pull operating mode of two single-ended
charge pumps assures the low output voltage ripple as current is continuously transferred to the output.
TPS60200
OUTPUT
3.3V, 100 mA
INPUT
1.6V to 3.6V
PEAK OUTPUT CURRENT
vs
TPS60200
5
7
1
IN
OUT
INPUT VOLTAGE
C
o
350
300
250
R1
R2
C
i
µ
R3
µ
2.2
F
2.2
F
LBI
10
LBO
Low Battery
Warning
4
6
8
C1+
C2+
C2–
C1
200
150
100
50
3
9
C2
µ
1
F
C1–
EN
µ
1
F
GND
2
OFF/ON
Figure 1. Typical Application Circuit
With Low-Battery Warning
0
1.6
2.0
2.4
2.8
3.2
3.6
V – Input Voltage – V
I
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 2000, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS60200, TPS60201, TPS60202, TPS60203
REGULATED 3.3 V, 100-mA LOW-RIPPLE CHARGE PUMP
LOW POWER DC/DC CONVERTERS
SLVS274 – MARCH 2000
description (continued)
The devices operate in the newly developed LinSkip mode. In this operating mode, the device switches
seamlessly from the power saving pulse-skip mode at light loads to the low-noise constant-frequency,
linear-regulation mode once the output current exceeds the LinSkip threshold of about 7-mA. Even in pulse-skip
mode the output ripple is maintained at a very low level because the output resistance of the charge pump is
still regulated.
Three operating modes can be programmed using the EN pin. EN = low disables the device, shuts down all
internal circuits and disconnects the output from the input. EN = high enables the device and programs it to run
from the internal oscillator. The devices operate synchronized to an external clock signal if EN is clocked; thus
switching harmonics can be controlled and minimized. The devices include a low-battery detector that issues a
warning if the battery voltage drops below a user-defined threshold voltage or a power-good detector that goes
active when the output voltage reaches about 90% of its nominal value.
Device options with either a low-battery or power good detector are available. This dc/dc converter requires no
inductors therefore EMI of the system is reduced to a minimum. It is available in the small 10-pin MSOP package
(DGS).
DGS PACKAGES
TPS60201,
TPS60203
TPS60200,
TPS60202
GND
GND
C1–
PG
EN
C2–
IN
1
2
3
4
5
10
9
LBI
GND
C1–
LBO
EN
1
2
3
4
5
10
9
8
8
C2–
IN
C1+
7
C1+
7
6
OUT
C2+
6
OUT
C2+
AVAILABLE OPTIONS
MARKING
DGS
PACKAGE
OUTPUT
CURRENT VOLTAGE
OUTPUT
†
T
PART NUMBER
DEVICE FEATURES
A
(mA)
100
100
50
(V)
3.3
3.3
3.3
3.3
TPS60200DGS
TPS60201DGS
TPS60202DGS
TPS60203DGS
AEX
AEY
AEZ
AFA
Low-battery detector
Power-good detector
Low-battery detector
Power-good detector
–40°C to 85°C
50
†
The DGS package is available taped and reeled. Add R suffix to device type (e.g. TPS60200DGSR) to order
quantities of 3000 devices per reel.
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS60200, TPS60201, TPS60202, TPS60203
REGULATED 3.3 V, 100-mA LOW-RIPPLE CHARGE PUMP
LOW POWER DC/DC CONVERTERS
SLVS274 – MARCH 2000
functional block diagrams
TPS60200 and TPS60202 with low-battery detector
Charge Pump 1
Charge Pump 2
0°
IN
Oscillator
180°
C1+
C1–
C1
C2
EN
Control
Circuit
C2+
C2–
_
+
+
OUT
V
REF
–
Shutdown/
Start-Up
Control
Auto–
Discharge
_
_
+
LBI
+
+
0.8* V
+
IN
–
V
REF
–
LBO
GND
TPS60201 and TPS60203 with power-good detector
Charge Pump 1
Charge Pump 2
0°
IN
Oscillator
180°
C1+
C1–
C1
C2
EN
Control
Circuit
C2+
C2–
_
+
+
OUT
V
REF
–
Shutdown/
Start-Up
Control
Auto–
Discharge
_
_
+
+
+
0.8* V
+
IN
–
V
REF
–
PG
GND
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS60200, TPS60201, TPS60202, TPS60203
REGULATED 3.3 V, 100-mA LOW-RIPPLE CHARGE PUMP
LOW POWER DC/DC CONVERTERS
SLVS274 – MARCH 2000
Terminal Functions
TERMINAL
I/O
DESCRIPTION
NAME
C1+
NO.
4
Positive terminal of the flying capacitor C1
C1–
C2+
C2–
3
Negative terminal of the flying capacitor C1
6
Positive terminal of the flying capacitor C2
8
Negative terminal of the flying capacitor C2
Device-enable input. Three operating modes can be programmed with the EN pin.
–
EN = Low disables the device. Output and input are isolated in the shutdown mode and the output capacitor is
automatically discharged.
EN
9
I
–
–
EN = High lets the device run from the internal oscillator.
If an external clock signal is applied to the EN pin, the device is in Sync–Mode and runs synchronized at the
frequency of the external clock signal.
GND
IN
2
7
Ground
I
I
Supply input. Bypass IN to GND with a capacitor of the same size as C .
o
Low-battery detector input for TPS60200 and TPS60202. A low-battery warning is generated at the LBO pin when
the voltage on LBI drops below the threshold of 1.18 V. Connect LBI to GND if the low-battery detector function is
not used. For the devices TPS60201 and TPS60203, this pin has to be connected to ground (GND pin).
LBI/GND
1
Open-drain low-battery detector output for TPS60200 and TPS60202. This pin is pulled low if the voltage on LBI
dropsbelow the threshold of 1.18 V. A pullup resistor should be connected between LBO and OUT or any other logic
supply rail that is lower than 3.6 V.
LBO/PG
OUT
10
5
O
O
Open-drain power-good detector output for TPS60201 and TPS60203. As soon as the voltage on OUT reaches
about 90% of it is nominal value this pin goes active high. A pullup resistor should be connected between PG and
OUT or any other logic supply rail that is lower than 3.6 V.
Regulated 3.3-V power output. Bypass OUT to GND with the output filter capacitor C .
o
detailed description
operating principle
The TPS6020x charge pumps provide a regulated 3.3 V output from a 1.8 V to 3.6 V input. They deliver up to
100 mA load current while maintaining the output at 3.3 V ± 4%. Designed specifically for space critical battery
powered applications, the complete converter requires only four external capacitors. The device is using the
push-pull topology to achieve lowest output voltage ripple. The converter is also optimized for smallest board
space. It makes use of small sized capacitors, with the highest output current rating per output capacitance and
package size.
The TPS6020x circuits consist of an oscillator, a 1.18 V voltage reference, an internal resistive feedback circuit,
an error amplifier, two charge pump power stages with high current MOSFET switches, a shutdown/start-up
circuit, a control circuit, and an auto-discharge transistor (see functional block diagrams).
push-pull operating mode
The two single-ended charge pump power stages operate in the so-called push-pull operating mode, i.e. they
operate with a 180°C phase shift. Each single-ended charge pump transfers charge into its transfer capacitor
(C1 or C2) in one half of the period. During the other half of the period (transfer phase), the transfer capacitor
isplacedinserieswiththeinputtotransferitschargetoC . Whileonesingle-endedchargepumpisinthecharge
o
phase, the other one is in the transfer phase. This operation assures an almost constant output current which
ensures a low output ripple.
Iftheclockweretoruncontinuously, thisprocesswouldeventuallygenerateanoutputvoltageequaltotwotimes
the input voltage (hence the name voltage doubler). In order to provide a regulated fixed output voltage of 3.3
V, the TPS6020x devices use either pulse-skip or constant-frequency linear-regulation control mode. The mode
is automatically selected based on the output current. If the load current is below the LinSkip current threshold,
it switches into the power-saving pulse-skip mode to boost efficiency at low output power.
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS60200, TPS60201, TPS60202, TPS60203
REGULATED 3.3 V, 100-mA LOW-RIPPLE CHARGE PUMP
LOW POWER DC/DC CONVERTERS
SLVS274 – MARCH 2000
detailed description (continued)
constant-frequency mode
When the output current is higher then the LinSkip current threshold, the charge pump runs continuously at the
switching frequency f . The control circuit, fed from the error amplifier, controls the charge on C1 and C2
(OSC)
bycontrollingthegatesandhencether
oftheintegratedMOSFETs. Whentheoutputvoltagedecreases,
DS(ON)
the gate drive increases, resulting in a larger voltage across C1 and C2. This regulation scheme minimizes
output ripple. Since the device switches continuously, the output signal contains well-defined frequency
components, and the circuit requires smaller external capacitors for a given output ripple. However,
constant-frequency mode, due to higher operating current, is less efficient at light loads. For this reason, the
device switches seamlessly into the pulse-skip mode when the output current drops below the LinSkip current
threshold.
pulse-skip mode
The regulator enters the pulse-skip mode when the output current is lower than the LinSkip current threshold
of 7 mA. In the pulse-skip mode, the error amplifier disables switching of the power stages when it detects an
output voltage higher than 3.3 V. The controller skips switching cycles until the output voltage drops below 3.3
V. Then the error amplifier reactivates the oscillator and switching of the power stages starts again. A 30 mV
output voltage offset is introduced in this mode.
The pulse-skip regulation mode minimizes operating current because it does not switch continuously and
deactivates all functions except the voltage reference and error amplifier when the output is higher than 3.3 V.
Evenin pulse-skip mode the r
of the MOSFETs is controlled. This way the energy per switching cycle that
DS(ON)
is transferred by the charge pump from the input to the output is limited to the minimum that is necessary to
sustain a regulated output voltage, with the benefit that the output ripple is kept to a minimum. When switching
is disabled from the error amplifier, the load is also isolated from the input.
start up, shutdown, and auto-discharge
During start-up, i.e. when EN is set from logic low to logic high, the output capacitor is directly connected to IN
and charged up with a limited current until the output voltage V reaches 0.8 × V . When the start-up comparator
O
I
detects this limit, the converter begins switching. This precharging of the output capacitor guarantees a short
start-up time. In addition, the inrush current into an empty output capacitor is limited. The converter can start
into a full load, which is defined by a 33-Ω or 66-Ω resistor, respectively.
Driving EN low disables the converter. This disables all internal circuits and reduces the supply current to only
0.05 µA. The device exits shutdown once EN is set high. When the device is disabled, the load is isolated from
the input. This is an important feature in battery operated products because it extends the products shelf life.
Additionally, the output capacitor will automatically be discharged after EN is taken low. This ensures that the
system, when switched off, is in a stable and reliable condition since the supply voltage is removed from the
supply pins.
synchronization to an external clock signal
The operating frequency of the charge pump is limited to 400 kHz in order to avoid interference in the sensitive
455 kHz IF band. The device can either run from the integrated oscillator, or an external clock signal can be used
to drive the charge pump. The maximum frequency of the external clock signal is 800 kHz. The switching
frequency used internally to drive the charge pump power stages is half of the external clock frequency. The
external clock signal is applied to the EN-pin. The device will switch off if the signal on EN is hold low for more
than 10 µs.
When the load current drops below the LinSkip current threshold, the devices will enter the pulse-skip mode
but stay synchronized to the external clock signal.
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS60200, TPS60201, TPS60202, TPS60203
REGULATED 3.3 V, 100-mA LOW-RIPPLE CHARGE PUMP
LOW POWER DC/DC CONVERTERS
SLVS274 – MARCH 2000
detailed description (continued)
low-battery detector (TPS60200 and TPS60202)
The low-battery comparator trips at 1.18 V ± 4% when the voltage on pin LBI ramps down. The voltage V
(TRIP)
at which the low-battery warning is issued can be adjusted with a resistive divider as shown in Figure 2. The
sum of resistors R1 and R2 is recommended to be in the 100 kΩ to 1 MΩ range. When choosing R1 and R2,
be aware of the input leakage current into the LBI pin.
LBOisanopendrainoutput. AnexternalpullupresistortoOUT, oranyothervoltagerailintheappropriaterange,
in the 100 kΩ to 1 MΩ range is recommended. During start-up, the LBO output signal is invalid for the first 500
µs. LBO is high impedance when the device is disabled. If the low-battery comparator function is not used,
connect LBI to ground and leave LBO unconnected. The low-battery detector is disabled when the device is
switched off.
V
O
IN
V
BAT
R3
LBO
R1
R2
R1
R2
LBI
V(TRIP)
1.18 V 1
_
+
+
–
V
REF
Figure 2. Programming of the Low-Battery Comparator Trip Voltage
A 100 nF ceramic capacitor should be connected in parallel to R2 if large line transients are expected. These
voltage drops can inadvertently trigger the low-battery comparator and produce a wrong low-battery warning
signal at the LBO pin.
Formulas to calculate the resistive divider for low-battery detection, with V
of resistors R1 and R2 equal 1 MΩ:
= 1.13 V to 1.23 V and the sum
LBI
V
LBI
R2
R1
1 M
1 M
(1)
(2)
V
Bat
R2
Formulas to calculate the minimum and maximum battery voltage:
R1
R2
(min)
R2
(max)
V
V
(3)
(4)
Bat(min)
LBI(min)
(max)
R1
R2
(max)
R2
(min)
V
V
Bat(max)
LBI(max)
(min)
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS60200, TPS60201, TPS60202, TPS60203
REGULATED 3.3 V, 100-mA LOW-RIPPLE CHARGE PUMP
LOW POWER DC/DC CONVERTERS
SLVS274 – MARCH 2000
detailed description (continued)
Table 1. Recommended Values for the Resistive Divider From the E96 Series (±1%)
VIN/V
1.6
R1/kΩ
267
R2/kΩ
750
V
/V
V
/V
TRIP(MIN)
TRIP(MAX)
1.524
1.677
1.7
301
681
1.620
1.710
1.799
1.903
1.785
1.887
1.988
2.106
1.8
340
649
1.9
374
619
2.0
402
576
power-good detector (TPS60201 and TPS60203)
The power-good output is an open-drain output that pulls low when the output is out of regulation. When the
output rises to within 90% of its nominal voltage, the power-good output is released. Power-good is high
impedance in shutdown. In normal operation, an external pullup resistor must be connected between PG and
OUT, or any other voltage rail in the appropriate range. The resistor should be in the 100 kΩ to 1 MΩ range.
If the PG output is not used, it should remain unconnected.
†
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Voltage range: IN, OUT, EN, LBI, LBO, PG to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 3.6 V
C1+, C2+ to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to (V + 0.3 V)
O
C1–, C2– to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to (V + 0.3 V)
I
Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See dissipation rating table
Continuous output current TPS60200, TPS60201 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 mA
Continuous output current TPS60202, TPS60203 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 mA
Storage temperature range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to 150°C
stg
Maximum junction temperature, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
J
†
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.
DISSIPATION RATING TABLE 1 FREE-AIR TEMPERATURE
T
≤ 25°C
DERATING FACTOR
T
= 70°C
T = 85°C
A
POWER RATING
A
A
PACKAGE
POWER RATING
ABOVE T = 25°C
POWER RATING
A
DGS
424 mW
3.4 mW/ C
187 mW
136 mW
The thermal resistance junction to ambient of the DGS package is R
TH–JA
= 294°C/W.
recommended operating conditions
MIN
1.6
NOM MAX
UNIT
V
Input voltage range, V
3.6
I
Input capacitor, C
2.2
1
µF
µF
µF
°C
i
Flying capacitors, C1, C2
Output capacitor, C
2.2
o
Operating junction temperature, T
–40
125
J
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS60200, TPS60201, TPS60202, TPS60203
REGULATED 3.3 V, 100-mA LOW-RIPPLE CHARGE PUMP
LOW POWER DC/DC CONVERTERS
SLVS274 – MARCH 2000
electrical characteristics at C = 2.2 µF, C1 = C2= 1 µF, C = 2.2 µF, T = –40°C to 85°C, V = 2.4 V,
i
o
A
I
EN = V (unless otherwise noted)
I
PARAMETER
TEST CONDITIONS
MIN
100
50
TYP
MAX
UNIT
mA
mA
V
TPS60200 and TPS60201, V = 2 V
I
I
Maximum continuous output current
O(MAX)
TPS60202 and TPS60203, V = 2 V
I
1.6 V < V < 1.8 V, 0 < I < 0.25 × I
3
I
O
O(MAX)
1.8 V < V < 2 V,
0 < I < 0.5 × I
3.17
3.17
3.17
3.43
3.43
3.47
V
I
O
O(MAX)
V
V
Output voltage
O
2 V < V < 3.3 V,
0 < I < I
O(MAX)
V
I
O
3.3 V < V < 3.6 V, 0 < I < I
V
I
O
O(MAX)
Output voltage ripple
I
I
= I
5
35
mV
PP
µA
PP
O
O(MAX)
I
I
f
f
Quiescent current (no-load input current)
Shutdown supply current
Internal switching frequency
External clock signal frequency
External clock signal duty cycle
EN input low voltage
= 0 mA, V = 1.8 V to 3.6 V
70
1
(Q)
O
I
EN = 0 V
0.05
300
600
µA
(SD)
200
400
400
800
70%
kHz
kHz
(OSC)
(SYNC)
30%
V
V
V = 1.6 V to 3.6 V
I
V = 1.6 V to 3.6 V
I
0.3 × V
I
V
V
IL
EN input high voltage
0.7 × V
I
IH
I
EN input leakage current
EN = 0 V or V
0.01
0.6
0.1
µA
lkg(EN)
I
EN is set from V to GND,
Time until V < 0.5V
O
I
Output capacitor auto discharge time
ms
Output resistance in shutdown
LinSkip threshold
EN = 0V
70
7
Ω
V = 2.2V
I
mA
Output load regulation
10 mA < I < I
; T = 25°C
0.01
%/mA
O
O(MAX)
A
2 V < V < 3.3 V,
I
= 0.5 x I
,
O(MAX)
I
O
Output line regulation
Short circuit current
0.6
60
%/V
mA
T
A
= 25°C
I
V = 2.4 V,
I
V
= 0 V
O
(SC)
electrical characteristics for low-battery comparator of devices TPS60200 and TPS60202 at
T = –40°C to 85°C, V = 2.4 V and EN = V (unless otherwise noted)
A
i
i
PARAMETER
TEST CONDITIONS
V = 1.6V to 2.2V, T = 0°C to 70°C
MIN
TYP
1.18
10
MAX
UNIT
V
V
(LBI)
LBI trip voltage
1.13
1.23
I
c
LBI trip voltage hysteresis
LBI input current
For rising voltage at LBI
mV
nA
V
I
V
(LBI)
V
(LBI)
V
(LBI)
= 1.3 V
= 0 V,
2
50
0.4
0.1
I(LBI)
V
LBO output voltage low
LBO leakage current
I
= 1 mA
= 3.3 V
(LBO)
O(LBO)
(LBO)
I
= 1.3 V,
V
0.01
µA
lkg(LBO)
NOTE: During start-up of the converter the LBO output signal is invalid for the first 500 µs.
electrical characteristics for power-good comparator of devices TPS60201 and TPS60203 at
T = –40°C to 85°C, V = 2.4 V and EN = V (unless otherwise noted)
A
i
i
PARAMETER
TEST CONDITIONS
T = 0°C to 70°C
MIN
TYP
MAX
UNIT
V
(PG)
Power-good trip voltage
0.87 × V
0.91 × V
0.95 × V
O
V
c
O
O
V
Power-good trip voltage hysteresis
Power-good output voltage Low
Power-good leakage current
V
O
V
O
V
O
decreasing, T = 0°C to 70°C
1%
hys(PG)
O(PG)
lkg(PG)
c
V
= 0V,
I
= 1 mA
= 3.3 V
0.4
0.1
V
(PG)
I
= 3.3 V,
V
0.01
µA
(PG)
NOTE: During start-up of the converter the PG output signal is invalid for the first 500 µs.
8
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TPS60200, TPS60201, TPS60202, TPS60203
REGULATED 3.3 V, 100-mA LOW-RIPPLE CHARGE PUMP
LOW POWER DC/DC CONVERTERS
SLVS274 – MARCH 2000
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURES
η
η
Efficiency
vs Output current (TPS60200 and TPS60202)
vs Input voltage
3, 4
Efficiency
5
6
I
Q
Quiescent supply current
vs Input voltage
vs Output current (TPS60200 and TPS60202)
vs Input voltage (TPS60200 and TPS60202)
vs Time
7, 8
9, 10
11, 12, 13
14
V
Output voltage
O
O
V
Output voltage ripple
Start-up timing
Load transient response
Line transient response
Peak output current
15
16
I
O
vs Input voltage (TPS60200)
17
NOTE: All typical characteristics were measured using the typical application circuit of Figure 18 (unless otherwise noted).
TPS60200
EFFICIENCY
vs
TPS60202
EFFICIENCY
vs
OUTPUT CURRENT
OUTPUT CURRENT
100
90
80
70
60
100
90
80
70
60
V = 1.8 V
I
50
40
50
40
V = 2.4 V
I
V = 1.8 V
I
V = 2.7 V
I
V = 2.4 V
I
30
30
V = 2.7 V
20
10
0
I
20
10
0
0.1
1
I
10
100
1000
0.1
1
10
100
– Output Current – mA
I
O
– Output Current – mA
O
Figure 3
Figure 4
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS60200, TPS60201, TPS60202, TPS60203
REGULATED 3.3 V, 100-mA LOW-RIPPLE CHARGE PUMP
LOW POWER DC/DC CONVERTERS
SLVS274 – MARCH 2000
TYPICAL CHARACTERISTICS
TPS60200
EFFICIENCY
vs
QUIESCENT SUPPLY CURRENT
vs
INPUT VOLTAGE
INPUT VOLTAGE
100
40
38
36
34
32
30
28
26
I
O
= 0 mA
90
80
70
60
50
I
O
= 50 mA
40
30
20
24
22
20
10
0
1.6
2.0
2.4
2.8
3.2
3.6
1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6
V – Input Voltage – V
I
V – Input Voltage – V
I
Figure 5
Figure 6
TPS60202
OUTPUT VOLTAGE
vs
TPS60200
OUTPUT VOLTAGE
vs
OUTPUT CURRENT
OUTPUT CURRENT
3.35
3.5
V = 2.7 V
I
V = 3.6 V
I
3.30
3.25
3.20
3.15
3.10
3.05
3
3.4
3.3
V = 3.6 V
I
V = 1.8 V
I
V = 2.4 V
I
3.2
3.1
3.0
2.9
V = 1.8 V
I
V = 2.7 V
I
V = 2.4 V
I
1
10
100
1
10
100
1000
I
O
– Output Current – mA
I
O
– Output Current – mA
Figure 7
Figure 8
10
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS60200, TPS60201, TPS60202, TPS60203
REGULATED 3.3 V, 100-mA LOW-RIPPLE CHARGE PUMP
LOW POWER DC/DC CONVERTERS
SLVS274 – MARCH 2000
TYPICAL CHARACTERISTICS
TPS60200
OUTPUT VOLTAGE
vs
TPS60202
OUTPUT VOLTAGE
vs
INPUT VOLTAGE
INPUT VOLTAGE
3.4
3.3
3.2
3.35
3.30
1 mA
1 mA
3.25
50 mA
3.1
3.0
100 mA
3.20
25 mA
50 mA
3.15
2.9
2.8
2.7
3.10
3.05
3.00
1.6
2.0
2.4
2.8
3.2
3.6
1.6
2.0
2.4
2.8
3.2
3.6
V – Input Voltage – V
I
V – Input Voltage – V
I
Figure 9
Figure 10
TPS60200
TPS60200
OUTPUT VOLTAGE RIPPLE
OUTPUT VOLTAGE RIPPLE
vs
vs
TIME
TIME
3.38
3.36
3.38
3.36
V = 2.4 V
I
V = 2.4 V
I
I
O
= 10 mA
I
O
= 1 mA
3.34
3.32
3.30
3.28
3.26
3.34
3.32
3.30
3.28
3.26
3.24
3.22
3.24
3.22
0
1
2
3
4
5
6
7
8
9
10
0
5
10 15 20 25 30 35 40 45 50
t – Time – µs
t – Time – µs
Figure 11
Figure 12
11
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS60200, TPS60201, TPS60202, TPS60203
REGULATED 3.3 V, 100-mA LOW-RIPPLE CHARGE PUMP
LOW POWER DC/DC CONVERTERS
SLVS274 – MARCH 2000
TYPICAL CHARACTERISTICS
TPS60200
OUTPUT VOLTAGE RIPPLE
vs
TIME
START-UP TIMING
3.5
3
1400
1200
1000
800
600
400
200
0
3.38
3.36
3.34
3.32
3.30
3.28
3.26
V = 2.4 V
I
V = 2.4 V
I
V
I
O
= 100 mA
O
2.5
2
I
I
1.5
1
EN
0.5
0
3.24
3.22
0
50 100 150 200 250 300 350 400 450 500
0
1
2
3
4
5
6
7
8
9
10
t – Time – µs
t – Time – µs
Figure 13
Figure 14
TPS60200
TPS60200
LOAD TRANSIENT RESPONSE
LINE TRANSIENT RESPONSE
V = 2.4 V
I
I
O
= 50 mA
3.30
3.28
3.26
3.24
3.32
3.30
3.28
3.26
2.8 V
100 mA
10 mA
2.2 V
0
50 100 150 200 250 300 350 400 450 500
0
1
2
3
4
5
6
7
8
9
10
t – Time – µs
t – Time – ms
Figure 15
Figure 16
12
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS60200, TPS60201, TPS60202, TPS60203
REGULATED 3.3 V, 100-mA LOW-RIPPLE CHARGE PUMP
LOW POWER DC/DC CONVERTERS
SLVS274 – MARCH 2000
TYPICAL CHARACTERISTICS
TPS60200
PEAK OUTPUT CURRENT
vs
INPUT VOLTAGE
350
300
250
200
150
100
50
0
1.6
2.0
2.4
2.8
3.2
3.6
V – Input Voltage – V
I
Figure 17
APPLICATION INFORMATION
capacitor selection
The TPS6020x devices require only four external capacitors to achieve a very low output voltage ripple. The
capacitor values are closely linked to the required output current. Low ESR (< 0.1 Ω) capacitors should be used
at input and output. In general, the transfer capacitors (C1 and C2) will be the smallest, a 1 µF value is
recommended for maximum load operation. With smaller capacitor values, the maximum possible load current
is reduced and the LinSkip threshold is lowered.
The input capacitor improves system efficiency by reducing the input impedance. It also stabilizes the input
current of the power source. The input capacitor should be chosen according to the power supply used and the
distance from the power source to the converter IC. C is recommended to be about two to four times as large
i
as the flying capacitors C1 and C2.
The output capacitor (C ) should be at minimum the size of the input capacitor. The minimum required
o
capacitance is 2.2 µF. Larger values will improve the load transient performance and will reduce the maximum
output ripple voltage.
Only ceramic capacitors are recommended for input, output, and flying capacitors. Depending on the material
used to manufacture them, ceramic capacitors might lose their capacitance over temperature and voltage.
Ceramic capacitors of type X7R or X5R material will keep their capacitance over temperature and voltage,
whereas Z5U or Y5V-type capacitors will decrease in capacitance. Table 2 lists recommended capacitor values.
13
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS60200, TPS60201, TPS60202, TPS60203
REGULATED 3.3 V, 100-mA LOW-RIPPLE CHARGE PUMP
LOW POWER DC/DC CONVERTERS
SLVS274 – MARCH 2000
APPLICATION INFORMATION
Table 2. Recommended Capacitor Values (Ceramic X5R and X7R)
FLYING
CAPACITORS,
C1/C2
INPUT
CAPACITOR,
OUTPUT
CAPACITOR,
OUTPUT VOLTAGE
RIPPLE IN LINEAR MODE,
OUTPUT VOLTAGE
RIPPLE IN SKIP MODE,
LOAD CURRENT,
I
LOAD
(mA)
C
C
V
(mV)
V
P-P
IN
OUT
P-P
(µF)
(µF)
2.2
4.7
2.2
4.7
2.2
2.2
2.2
(µF)
2.2
4.7
10
(mV)
20
10
7
0–100
0–100
0–100
0–100
0–50
1
1
3
3
3
3
3
5
5
1
2.2
0.47
0.22
0.1
4.7
2.2
2.2
2.2
10
20
15
15
0–25
0–10
Table 3. Recommended Capacitor Types
MANUFACTURER
PART NUMBER
UMK212BJ104MG
EMK212BJ224MG
EMK212BJ474MG
LMK212BJ105KG
LMK212BJ225MG
EMK316BJ225KL
LMK316BJ475KL
JMK316BJ106ML
0805ZC105KAT2A
1206ZC225KAT2A
SIZE
0805
0805
0805
0805
0805
1206
1206
1206
0805
1206
CAPACITANCE
0.1 µF
TYPE
Taiyo Yuden
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
0.22 µF
0.47 µF
1 µF
2.2 µF
2.2 µF
4.7 µF
10 µF
AVX
1 µF
2.2 µF
Table 4. Recommended Capacitor Manufacturers
MANUFACTURER
Taiyo Yuden
AVX
CAPACITOR TYPE
X7R/X5R ceramic
X7R/X5R ceramic
INTERNET SITE
http://www.t–yuden.com/
http://www.avxcorp.com/
14
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS60200, TPS60201, TPS60202, TPS60203
REGULATED 3.3 V, 100-mA LOW-RIPPLE CHARGE PUMP
LOW POWER DC/DC CONVERTERS
SLVS274 – MARCH 2000
APPLICATION INFORMATION
typical operating circuit TPS60200 and TPS60202
OUTPUT
3.3V, 100 mA
INPUT
1.6V to 3.6V
TPS60200
5
7
IN
OUT
C
2.2
o
R1
R2
C
i
F
R3
C2
µ
F
1
4
µ
2.2
LBI
10
6
LBO
C2+
Low Battery
Warning
C1+
C1
µ
3
9
8
1 F
C1–
EN
C2–
µ
1 F
GND
2
OFF/ON
OUTPUT
3.3V, 50 mA
INPUT
1.6V to 3.6V
TPS60202
5
7
IN
OUT
C
2.2 F
o
R1
C
i
F
R3
C2
µ
1
4
µ
2.2
LBI
10
6
LBO
C2+
R2
Low Battery
Warning
C1+
C1
3
9
8
µ
0.47
F
C1–
EN
C2–
µ
0.47 F
GND
2
OFF/ON
Figure 18. Typical Operating Circuit TPS60200 and TPS60202 With Low-Battery Detector
15
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS60200, TPS60201, TPS60202, TPS60203
REGULATED 3.3 V, 100-mA LOW-RIPPLE CHARGE PUMP
LOW POWER DC/DC CONVERTERS
SLVS274 – MARCH 2000
APPLICATION INFORMATION
typical operating circuit TPS60201 and TPS60203
OUTPUT
3.3V, 100 mA
INPUT
1.6V to 3.6V
TPS60201
5
7
IN
OUT
C
2.2 F
o
C
i
R1
C2
µ
µ
2.2
F
10
6
PG
Power-Good
Signal
4
C1+
C2+
3
9
8
1
C1–
EN
C2–
µ
1
F
GND
1,2
OFF/ON
OUTPUT
3.3V, 50 mA
INPUT
1.6V to 3.6V
TPS60203
5
7
4
IN
OUT
C
2.2 F
o
C
i
R1
C2
µ
µ
2.2
F
10
6
PG
Power-Good
Signal
C1+
C2+
C1
0.47 µF
3
9
8
C1–
EN
C2–
0.47 µF
GND
1,2
OFF/ON
Figure 19. Typical Operating Circuit TPS60201 and TPS60203 With Power-Good Detector
power dissipation
The power dissipated in the TPS6020x devices depends mainly on input voltage and output current and is
approximated by:
P
I
x 2 x V – V
for I
I
(5)
(DISS)
O
I
O
(Q)
O
By observing equation 5, it can be seen that the power dissipation is worst for highest input voltage V and
I
highest output current I . For an input voltage of 3.6 V and an output current of 100 mA the calculated power
O
dissipation P
is 390 mW. This is also the point where the charge pump operates with its lowest efficiency.
(DISS)
With the recommended maximum junction temperature of 125°C and an assumed maximum ambient operating
temperature of 85°C, the maximum allowed thermal resistance junction to ambient of the system can be
calculated.
T
T
J(MAX)
P
A
125°C 85°C
R
102°C W
(6)
JA(max)
390 mW
DISS(max)
16
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS60200, TPS60201, TPS60202, TPS60203
REGULATED 3.3 V, 100-mA LOW-RIPPLE CHARGE PUMP
LOW POWER DC/DC CONVERTERS
SLVS274 – MARCH 2000
APPLICATION INFORMATION
power dissipation (continued)
P
must be less than that allowed by the package rating. The thermal resistance junction to ambient of the
DISS
used 10-pin MSOP is 294°C/W for an unsoldered package. The thermal resistance junction to ambient with
the IC soldered to a printed circuit using a board layout as described in the application information section, the
R
is typically 200°C/W, which is higher than the maximum value calculated above. However in a battery
ΘJA
powered application, both V and T will typically be lower than the worst case ratings used in equation 6 , and
power dissipation should not be a problem in most applications.
I
A
layout and board space
Careful board layout is necessary due to the high transient currents and switching frequency of the converter.
All capacitors should be placed in close proximity to the device. A PCB layout proposal for a one-layer board
is given in Figure 22.
An evaluation module for the TPS60200 is available and can be ordered under product code
TPS60200EVM–145. The EVM uses the layout shown in Figure 22. All components including the pins are
shown. The EVM is built so that it can be connected to a 14-pin dual inline socket, therefore, the space needed
2
for the IC, the external parts, and 8 pins is 17.9 mm x 10.2 mm = 182.6 mm .
Figure 20. Recommended Component Placement and Board Layout
Table 5. Component Identification
IC1
C1, C2
C3
TPS60200
Flying capacitors
Input capacitors
C4
Output capacitors
C5
Stabilization capacitor for LBI
Resistive divider for LBI
Pullup resistor for LBO
Pullup resistor for EN
R1, R2
R3
R4
Capacitor C5 should be included if large line transients are expected. This capacitor suppresses toggling of the
LBO due to these line changes.
17
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS60200, TPS60201, TPS60202, TPS60203
REGULATED 3.3 V, 100-mA LOW-RIPPLE CHARGE PUMP
LOW POWER DC/DC CONVERTERS
SLVS274 – MARCH 2000
APPLICATION INFORMATION
device family products
Other charge pump dc-dc converters in this family are:
Table 6. Product Identification
PART NUMBER
TPS60100
TPS60101
TPS60110
TPS60111
TPS60120
TPS60121
TPS60122
TPS60123
TPS60130
TPS60131
TPS60132
TPS60133
TPS60140
TPS60141
DESCRIPTION
2-cell to regulated 3.3-V, 200-mA low-noise charge pump
2-cell to regulated 3.3-V, 100-mA low-noise charge pump
3-cell to regulated 5.0-V, 300-mA low-noise charge pump
3-cell to regulated 5.0-V, 150-mA low-noise charge pump
2-cell to regulated 3.3-V, 200-mA high efficiency charge pump with low battery comparator
2-cell to regulated 3.3-V, 200-mA high efficiency charge pump with power-good comparator
2-cell to regulated 3.3-V, 100-mA high efficiency charge pump with low battery comparator
2-cell to regulated 3.3-V, 100-mA high efficiency charge pump with power-good comparator
3-cell to regulated 5.0-V, 300-mA high efficiency charge pump with low battery comparator
3-cell to regulated 5.0-V, 300-mA high efficiency charge pump with power-good comparator
3-cell to regulated 5.0-V, 150-mA high efficiency charge pump with low battery comparator
3-cell to regulated 5.0-V, 150-mA high efficiency charge pump with power-good comparator
2-cell to regulated 5.0-V, 100-mA charge pump voltage tripler with low battery comparator
2-cell to regulated 5.0-V, 100-mA charge pump voltage tripler with power-good comparator
18
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS60200, TPS60201, TPS60202, TPS60203
REGULATED 3.3 V, 100-mA LOW-RIPPLE CHARGE PUMP
LOW POWER DC/DC CONVERTERS
SLVS274 – MARCH 2000
MECHANICAL DATA
DGS (S-PDSO-G10)
PLASTIC SMALL-OUTLINE PACKAGE
0,27
0,17
M
0,25
0,50
10
6
0,15 NOM
3,05
2,95
4,98
4,78
Gage Plane
0,25
0°–6°
1
5
0,69
0,41
3,05
2,95
Seating Plane
0,10
0,15
0,05
1,07 MAX
4073272/A 03/98
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion.
19
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
IMPORTANT NOTICE
Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
any product or service without notice, and advise customers to obtain the latest version of relevant information
to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those
pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
Customers are responsible for their applications using TI components.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
intellectual property right of TI covering or relating to any combination, machine, or process in which such
semiconductor products or services might be or are used. TI’s publication of information regarding any third
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright 2000, Texas Instruments Incorporated
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