TPS60130 TI | Alldatasheet
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TPS60130, TPS60131, TPS60132, TPS60133 REGULATED 5-V, 300 mA HIGH EFFICIENCY CHARGE PUMP DC/DC CONVERTERS SLVS258A – NOVEMBER 1999 – REVISED DECEMBER 1999 1POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 features applications /C0068Up to 90% Efficiency From 2.7-V to 5.4-V Input Voltage Range Because of Special Switching Topology /C0068Up to 300-mA Output Current (TPS60130 and TPS60131) /C0068No Inductors Required, Low EMI /C0068Regulated 5-V ±4% Output /C0068Only Four External Components Required /C006860-mA Quiescent Supply Current /C00680.05-mA Shutdown Current /C0068Load Disconnected in Shutdown /C0068Space-Saving, Thermally-Enhanced PowerPAD /C0116 Package /C0068Evaluation Module Available (TPS60130EVM–143) /C0068Battery-Powered Applications /C0068Three Battery Cells to 5-V Conversion or Point-of-Use 3.3 V to 5-V Conversion /C0068Lilon Battery to 5-V Conversion /C0068Portable Instruments /C0068Battery-Powered Microprocessor Systems /C0068Backup-Battery Boost Converters /C0068PDA’s, Organizers, Laptops /C0068Handheld Instrumentation /C0068Medical Instruments (e.g., Glucose Meters) /C0068PCMCIA and 5-V Smart Card Supply
description
The TPS6013x step-up, regulated charge pumps generate a 5-V ±4% output voltage from a 2.7-V to 5.4-V input voltage (three alkaline, NiCd, or NiMH batteries or one Lithium or Lilon battery). The output current is 300 mA for the TPS60130/ TPS60131 and 150 mA for the TPS60132/ TPS60133, all from a 3-V input. Only four external capacitors are needed to build a complete high efficiency dc/dc charge pump converter. To achieve the high efficiency over a wide input voltage range, the charge pump automatically selects between a 1.5x or doubler conversion mode. From a 3-V input, all ICs can start with full load current. efficiency (TPS60130, TPS60131) typical operating circuit IN IN LBI C1+ C1– ENABLE PGND GND OUT OUT FB LBO C2+ C2– C o 33 mF C i 15 mF Output
5 V, 300 mA
2.2 mF 2.2 mF Input 2.7 V to 5.4 V OFF/ON TPS60130 IO = 66 mA IO = 108 mA IO = 216 mA IO = 300 mA60 2.6 3 3.4 3.8 4.2 Efficiency – % 100 4.6 5 5.4 VI – Input Voltage – V Copyright 1999, Texas Instruments Incorporated 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. 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. PowerPAD is a trademark of Texas Instruments Incorporated.
TPS60130, TPS60131, TPS60132, TPS60133 REGULATED 5-V, 300 mA HIGH EFFICIENCY CHARGE PUMP DC/DC CONVERTERS SLVS258A – NOVEMBER 1999 – REVISED DECEMBER 1999
2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
description (continued) The devices feature the power-saving pulse-skip mode to extend battery life at light loads. TPS60130 and TPS60132 include a low-battery comparator; TPS60131 and TPS60133 feature a power-good output. The logic shut-down function reduces the supply current to 1 mA (max) and disconnects the load from the input. Special current-control circuitry prevents excessive current from being drawn from the battery during startup. This dc/dc converter requires no inductors and therefore EMI is of low concern. It is available in the small, thermally enhanced 20-pin PowerPAD/C0116 package (PWP). GND GND ENABLE FB OUT C1+ IN C1– PGND PGND GND GND LBI LBO OUT C2+ IN C2– PGND PGND PWP PACKAGE (TPS60130/TPS60132) (TOP VIEW) GND GND ENABLE FB OUT C1+ IN C1– PGND PGND GND GND NC PG OUT C2+ IN C2– PGND PGND PWP PACKAGE (TPS60131/TPS60133) (TOP VIEW) Thermal Pad AVAILABLE OPTIONS TA PART NUMBER † PACKAGE DEVICE FEATURES TPS60130PWP 3 cell to 5 V 300 mA Low battery detector –40°Ct o8 5°C TPS60131PWP PWP 20-Pin thermally 3-cell to 5 V, 300 mA Power good detector–40°C to 85°C TPS60132PWP PWP y enhanced TSSOP 3-cell to 5 V 150 mA Low battery detector TPS60133PWP 3-cell to 5 V, 150 mA Power good detector † The PWP package is available taped and reeled. Add R suffix to device type (e.g. TPS60130PWPR) to order quanities of 2000 devices per reel.
TPS60130, TPS60131, TPS60132, TPS60133 REGULATED 5-V, 300 mA HIGH EFFICIENCY CHARGE PUMP DC/DC CONVERTERS SLVS258A – NOVEMBER 1999 – REVISED DECEMBER 1999 3POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 functional block diagram Charge Pump Power Stages IN C1+ C1– OUT PGND IN C2+ C2– OUT PGND FB Oscillator Control Circuit –VREF Shutdown/ Start-Up Control
0.8 VI +
–VREF LBI GND LBO ENABLE C1F C2F TPS60130/TPS60132 Charge Pump Power Stages IN C1+ C1– OUT PGND IN C2+ C2– OUT PGND FB Oscillator Control Circuit –VREF Shutdown/ Start-Up Control –VREF GND PG ENABLE C1F C2F TPS60131/TPS60133
TPS60130, TPS60131, TPS60132, TPS60133 REGULATED 5-V, 300 mA HIGH EFFICIENCY CHARGE PUMP DC/DC CONVERTERS SLVS258A – NOVEMBER 1999 – REVISED DECEMBER 1999
4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
NAME NO. I/O DESCRIPTION C1+ 6 Positive terminal of the flying capacitor C1 C1– 8 Negative terminal of the flying capacitor C1 C2+ 15 Positive terminal of the flying capacitor C2 C2– 13 Negative terminal of the flying capacitor C2 ENABLE 3 I Enable input. Connect ENABLE to IN for normal operation. When ENABLE is a logic low, the device turns off and the supply current decreases to 0.05 mA. The output is disconnected from the input when the device is disabled. FB 4 I Feedback input. Connect FB to OUT as close to the load as possible to achieve best regulation. A resistive divider is on the chip to match internal reference voltage of 1.21 V. GND 1, 2, 19, 20 Ground. Analog ground for internal reference and control circuitry. Connect to PGND terminals through a short trace. IN 7,14 I Supply input. Bypass IN to PGND with a capacitor that has half of the capacitance of the output capacitor. Connect both IN terminals together through a short trace. LBO/PG 17 O Low battery detector output (TPS60130 and TPS60132) or power good output (TPS60131 and TPS60133). Open drain output of the low battery or power good comparator. It can sink 1 mA. A 100-kW to 1-MW pullup resistor to OUT is recommended. Leave the terminal unconnected if the low battery or power good detector is not used. LBI/NC 18 I Low battery detector input (TPS60130 and TPS60132 only). The voltage at this input is compared to the internal 1.21 V reference voltage. Connect this terminal to ground if the low-battery detection function is not used. On the TPS60131 and TPS60133, this terminal is not connected. OUT 5, 16 O Regulated 5-V power output. Connect both OUT terminals through a short trace and bypass OUT to GND with the output filter capacitor CO. PGND 9–12 Power ground. Charge-pump current flows through this pin. Connect all PGND terminals together. detailed description operating principle The TPS6013x charge pumps provide a regulated 5-V output from a 2.7-V to 5.4-V input. They deliver a maximum load current of 300 mA or 150 mA, respectively. Designed specifically for space-critical, battery- powered applications, the complete charge pump circuit requires four external capacitors. The circuit is optimized for efficiency over a wide input voltage range. The TPS6013x charge pumps consist of an oscillator, a 1.21-V bandgap reference, an internal resistive feedback circuit, an error amplifier, high current MOSFET switches, a shutdown/startup circuit, a low-battery or power-good comparator, and a control circuit (see functional block diagrams). The device consists of two single-ended charge pumps. These charge pumps are automatically configured to amplify the input voltage with a conversion factor of 1.5 or 2. The conversion ratio is dependent on the input voltage and load current. This assures high efficiency over a wide input voltage range and is further described in the adaptive mode switching section below. adaptive mode switching The ON-resistance of the MOSFETs that are in the charge path of the flying capacitors is regulated when the charge pump operates in voltage doubler mode. It is changed depending on the output voltage that is fed back into the control loop. This way, the time-constant during the charging phase can be modified and increased versus a time-constant for fully switched-on MOSFETs. The ON-resistance of both switches and the capacitance of the flying capacitor define the time constant. The MOSFET switches in the discharge path of the charge pump are always fully switched on to their minimum r DS(on). With the time-constant during charge phase being bigger than the time constant in discharge phase, the voltage on the flying capacitors stabilizes to the lowest possible value necessary to get a stable V O .
TPS60130, TPS60131, TPS60132, TPS60133 REGULATED 5-V, 300 mA HIGH EFFICIENCY CHARGE PUMP DC/DC CONVERTERS SLVS258A – NOVEMBER 1999 – REVISED DECEMBER 1999 5POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 adaptive mode switching (continued) The voltage on the flying capacitors is measured and compared with the supply voltage VI. If the voltage across the flying capacitors is smaller than half of the supply voltage, then the charge pump switches into the 1.5x conversion-mode. The charge pump switches back from a 1.5x conversion-mode to a voltage doubler mode if the load current in 1.5x conversion-mode can no more be delivered. With this control mode the device runs in doubler -mode at low VI and in 1.5x conversion-mode at high VI to optimize the efficiency. The most desirable transfer mode is automatically selected depending on both VI and IL. This means that at light loads the device selects the 1.5x conversion-mode already at smaller supply voltages than at heavy loads. The TPS60130 output voltage is regulated using the ACTIVE-CYCLE -regulation. An active cycle controlled charge pump utilizes two methods to control the output voltage. At high load currents it varies the on-resistances of the internal switches and keeps the ratio ON/OFF time (=frequency) constant. That means the charge pump runs at a fixed frequency. It also keeps the output voltage ripple as low as in linear-mode. At light loads the internal resistance and also the amount of energy transferred per pulse is fixed and the charge pump regulates the voltage by means of a variable ratio of ON-to-OFF time. In this operating point it runs like a skip mode controlled charge pump with a very high internal resistance, which also enables a low ripple in this operation mode. Since the charge pump does effectively switch at lower frequencies at light loads, it achieves a low quiescent current. pulse-skip mode In pulse-skip mode the error amplifier disables switching of the power stages when it detects an output higher than 5 V. The oscillator halts and the IC then skips switching cycles until the output voltage drops below 5 V. The error amplifier reactivates the oscillator and starts switching the power stages again. The pulse-skip regulation mode minimizes operating current because it does not switch continuously and deactivates all functions except bandgap reference, error amplifier, and low-battery/power-good comparator when the output is higher than 5 V. When switching is disabled from the error amplifier, the load is also isolated from the input. In pulse-skip mode, a special current control circuitry, limits the peak current. This assures moderate output voltage ripple and also prevents the device from drawing excessive current spikes out of the battery. start-up procedure During start-up, i.e. when ENABLE is set from logic low to logic high, the output capacitor is charged up, with a limited current, until the output voltage V O reaches 0.8 × VI. When the start-up comparator detects this voltage limit, the IC begins switching. This start-up charging of the output capacitor assures a short start-up time and eliminates the need of a Schottky diode between IN and OUT. The IC starts with a maximum load, which is defined by a 16-W or 33-W resistor, respectively. shutdown Driving ENABLE low places the device in shutdown mode. This disables all switches, the oscillator, and control logic. The device typically draws 0.05 mA (1 mA max) of supply current in this mode. Leakage current drawn from the output is as low as 1 mA max. The device exits shutdown once ENABLE is set to a high level. The typical no-load shutdown exit time is 10 ms. When the device is in shutdown, the load is isolated from the input. undervoltage lockout The TPS6013x devices have an undervoltage lockout feature that deactivates the device and places it in shutdown mode when the input voltage falls below 1.6 V. low-battery detector (TPS60130 and TPS60132) The internal low-battery comparator trips at 1.21 V ±5% when the voltage on pin LBI ramps down. The battery voltage at which the comparator initiates a low battery warning at the LBO output can easily be programmed with a resistive divider as shown in Figure 3. The sum of resistors R1 and R2 is recommended to be in the 100-kW to 1-MW range.
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LBO is an open drain output. An external pullup resistor to OUT, in the 100-kW to 1-MW range is recommended. If the low-battery comparator function is not used, connect LBI to ground and leave LBO unconnected. Figure 1. Programming of the Low-Battery Comparator Trip Voltage Table 1. Recommended Values for the Resistive Divider from the E96 Series (±1%),
Figure 2. Typical Operating Circuit Using Power-Good Comparator implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
TPS60130, TPS60131, TPS60132, TPS60133 REGULATED 5-V, 300 mA HIGH EFFICIENCY CHARGE PUMP DC/DC CONVERTERS SLVS258A – NOVEMBER 1999 – REVISED DECEMBER 1999
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– Maximum Continuous Dissipation – mW 1000 1200 DISSIPATION DERATING CURVE † vs FREE-AIR TEMPERATURE 1400 125 150 200 TA – Free-Air Temperature – °C PD R qJA = 178°C/W Figure 4 25 50 75 100 MAXIMUM CONTINUOUS DISSIPATION † vs CASE TEMPERATURE 125 150 Measured with the exposed thermal pad coupled to an infinite heat sink with a thermally conductive compound (the thermal conductivity of the compound is 0.815 W/m°C) The RqJC is 3.5°C/W PWP package TC – Case Temperature – °C – Maximum Continuous Dissipation – WPD † Dissipation rating tables and figures are provided for maintenance of junction temperature at or below absolute maximum temperature of 150°C. It is recommended not to exceed a junction temperature of 125°C. recommended operating conditions MIN MAX UNIT Input voltage, VI 2.7 5.4 V Output current IO TPS60130 and TPS60131 300 mAO utput current, IO TPS60132 and TPS60133 150 mA Operating junction temperature, TJ 125 °C
TPS60130, TPS60131, TPS60132, TPS60133 REGULATED 5-V, 300 mA HIGH EFFICIENCY CHARGE PUMP DC/DC CONVERTERS SLVS258A – NOVEMBER 1999 – REVISED DECEMBER 1999 9POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics at CI = 15 mF, C1F = C2F = 2.2 mF, CO = 33 mF, TC = –40°C to 85°C, VI = 3 V, V(FB) = VO and V(ENABLE) = VI (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VI Input voltage 2.7 5.4 V V(UVLO) Input undervoltage lockout threshold TC = 25°C 1.6 1.8 V IO(MAX) Maximum output TPS60130/TPS60131 300 mA IO(MAX) current TPS60132/TPS60133 150 mA
2.7 V < VI < 3 V,
0 < IO < IO(MAX) /2, TC = 0°C to 70°C 4.8 5.2 V VO Output voltage 3 V < VI < 5 V, 0 < IO < IO(MAX) 4.8 5.2 V 5 V < VI < 5.4 V, 0 < IO < IO(MAX) 4.8 5.25 V Ilkg(OUT) Output leakage current VI = 3.6 V, V(ENABLE) = 0 V 1 mA IQ Quiescent current (no-load input current)VI = 3.6 V 60 100 mA IQ(SDN) Shutdown supply current VI = 3.6 V, V(ENABLE) = 0 V 0.05 1 mA fOSC(INT) Internal switching frequency 210 320 450 kHz VIL Enable input voltage low VI = 2.7 V 0.3 x VI V VIH Enable input voltage high VI = 5.4 V 0.7 x VI V Ilkg(ENABLE) Enable input leakage current V(ENABLE) = VGND or VI 0.01 0.1 mA Output load regulation VI = 3.8 V, 1 mA < IO (max) TC = 25°C 0.002% mA Output line regulation 3 V < VI < 5 V, IO = 150 mA, TC = 25°C 0.2 %/V Short circuit current limit VI = 3.6 V, VO = 0 V, TC = 25°C 115 mA V(LBITRIP) LBI trip voltage TPS60130/TPS60132 VI = 2.7 V to 3.3 V, Hysteresis 0.8% for rising LBI, TC = 0°C to 70°C 1.15 1.21 1.27 V II(LBI) LBI input current TPS60130/TPS60132 V(LBI) = 1.3 V 100 nA VO(LBO) LBO output voltage low (see Note 2) TPS60130/TPS60132 V(LBI) = 0 V, I(LBO)(SINK) = 1 mA 0.4 V Ilkg(LBO) LBO leakage current TPS60130/TPS60132 V(LBI) = 1.3 V, V(LBO) = 5 V 0.01 0.1 mA V(PGTRIP) Power-good trip voltage TPS60131/TPS60133 TC = 0°C to 70°C 0.86 × VO 0.9 × VO 0.94 × VO V Vhys(PG) Power–good trip voltage hysteresisTPS60131/TPS60133 VO ramping negative, TC = 0°C to 70°C 0.8% VO(PG) Power-good output voltage low (see Note 2) TPS60131/TPS60133 VO = 0 V, I(PG)(SINK) = 1 mA 0.4 V Ilkg(PG) Power-good leakage current TPS60131/TPS60133 VO = 5 V, V(PG) = 5 V 0.01 0.1 mA NOTE 2: During start-up the LBO and PG output signal is invalid for the first 500 ms.
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Figure 5. Circuit Used For Typical Characteristics Measurements
TPS60130, TPS60131, TPS60132, TPS60133 REGULATED 5-V, 300 mA HIGH EFFICIENCY CHARGE PUMP DC/DC CONVERTERS SLVS258A – NOVEMBER 1999 – REVISED DECEMBER 1999
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VI – Input Voltage – V SUPPLY CURRENT vs INPUT VOLTAGE Supply Current – Am IO = 0 mA Figure 11 4.70 4.75 4.80 4.85 4.90 4.95 5.00 5.05 5.10 IO – Output Current – mA TPS60132 OUTPUT VOLTAGE vs OUTPUT CURRENT 100.1 1 10 100 1000 VI = 5.4 V VI = 2.7 V VI = 3.6 V VO – O utput Voltage – V Figure 12 4.70 4.75 4.80 4.85 4.90 4.95 5.00 5.05 5.10 IO – Output Current – mA TPS60132 OUTPUT VOLTAGE vs OUTPUT CURRENT 100.1 1 10 100 1000 VI = 5.4 V VI = 2.7 V VI = 3.6 V VO – Output Voltage – V Figure 13 VO – Output Voltage – V VI – Input Voltage – V 4.84 4.86 4.88 4.90 4.92 4.94 4.96 4.98 5.00 IO = 1 mA TPS60130 OUTPUT VOLTAGE vs INPUT VOLTAGE IO = 150 mA IO = 300 mA
TPS60130, TPS60131, TPS60132, TPS60133 REGULATED 5-V, 300 mA HIGH EFFICIENCY CHARGE PUMP DC/DC CONVERTERS SLVS258A – NOVEMBER 1999 – REVISED DECEMBER 1999
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– Output Voltage Ripple Amplitude– mV Figure 18 VI – Input Voltage – V OUTPUT VOLTAGE RIPPLE AMPLITUDE vs INPUT VOLTAGE IO = 150 mA IO = 75 mA IO = 1 mA VO 295 300 305 310 315 320 325 330 Figure 19 VI – Input Voltage – V OSCILLATOR FREQUENCY vs INPUT VOLTAGE T = –40 °C T = 85 °C T = 25 °C f – Frequency – kHz Figure 20 t – Time – ms LOAD TRANSIENT RESPONSE VI = 3.6 V 02 0 300 4.50 4.52 4.98 4.96 21 8 16141210 46 8 IO VO – Output Voltage – V– Output Current – mA Figure 21 t – Time – ms LINE TRANSIENT RESPONSE IO = 150 mA 02 0 3.4 3.9 5.02 5.00 4.98 4.96 21 8 16141210 46 8 V I VO – Output Voltage – V– Input Voltage – V
TPS60130, TPS60131, TPS60132, TPS60133 REGULATED 5-V, 300 mA HIGH EFFICIENCY CHARGE PUMP DC/DC CONVERTERS SLVS258A – NOVEMBER 1999 – REVISED DECEMBER 1999 15POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TYPICAL CHARACTERISTICS Figure 22 –0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 t – Time – ms OUTPUT VOLTAGE vs TIME (START-UP TIMING) VO – V VI = 3.6 V R LOAD = 16.7 W ENABLE – V VO – Output Voltage and Enable – V
APPLICATION INFORMATION
The TPS6013x charge pumps require only four external capacitors as shown in the basic application circuit. Their capacitance values and types are closely linked to the output current and output noise/ripple requirements. For lowest noise and ripple, low ESR (< 0.1 W ) capacitors should be used for input and output capacitors. 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 power source to the converter IC. The input capacitor also has an impact on the output voltage ripple. The lower the ESR of the input capacitor C i, the lower is the output ripple. Ci is recommended to be about two to four times as large as C(xF). The output capacitor Co can be selected from 5-times to 50-times larger than C(xF), depending on the ripple tolerance. The larger Co, the lower will be the output voltage ripple. Ci and Co can be either ceramic or low-ESR tantalum; aluminum capacitors are not recommended. Generally, the flying capacitors C(xF) will be the smallest. Only ceramic capacitors are recommended, due to their low ESR and because they retain their capacitance at the switching frequency. Because the device regulates the output voltage using the pulse-skip technique, a larger flying capacitor will lead to a higher output voltage ripple if the size of the output capacitor is not increased. Be aware that, depending on the material used to manufacture them, ceramic capacitors might lose their capacitance over temperature. 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.
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Table 2. Recommended Capicator Values The TPS6013x devices are charge pumps that regulate the output voltage using pulse-skip regulation mode. capacitors is indirectly proportional to the physical size of the capacitor. competitive in package size soon.
TPS60130, TPS60131, TPS60132, TPS60133 REGULATED 5-V, 300 mA HIGH EFFICIENCY CHARGE PUMP DC/DC CONVERTERS SLVS258A – NOVEMBER 1999 – REVISED DECEMBER 1999 17POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 capacitor selection (continued) Tables 3 and 4 lists the manufacturers of recommended capacitors. In most applications surface-mount tantalum capacitors will be the right choice. However, ceramic capacitors provide the lowest output voltage ripple due to their typically lower ESR. Table 3. Recommended Capacitors NOTE: Case code compatibility with EIA 535BAAC and CECC30801 molded chips. Table 4. Recommended Capacitor Manufacturers package power-dissipation limits and deratings.
TPS60130, TPS60131, TPS60132, TPS60133 REGULATED 5-V, 300 mA HIGH EFFICIENCY CHARGE PUMP DC/DC CONVERTERS SLVS258A – NOVEMBER 1999 – REVISED DECEMBER 1999
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Careful board layout is necessary due to the high transient currents and switching frequency of the converter. All capacitors should be soldered in close proximity to the IC. Connect ground and power ground pins through a short, low-impedance trace. A PCB layout proposal for a two-layer board is given in Figure 23. The bottom layer of the board carries only ground potential for best performance. The layout also provides improved thermal performance as the exposed lead frame is soldered to the PCB. An evaluation module for the TPS60130 is available and can be ordered under product code TPS60130EVM-143. The EVM uses the layout shown in Figure 23. Figure 23. Recommended PCB Layout for Figure 24. Component Placement for Table 5. Component Identification required. They can be omitted in most applications.
TPS60130, TPS60131, TPS60132, TPS60133 REGULATED 5-V, 300 mA HIGH EFFICIENCY CHARGE PUMP DC/DC CONVERTERS SLVS258A – NOVEMBER 1999 – REVISED DECEMBER 1999 19POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 paralleling of two TPS6013x to deliver 600 mA total output current Two TPS60130x devices can be connected in parallel to yield higher load currents. The circuit of Figure 25 can deliver up to 600 mA at an output voltage of 5 V. The devices can share the output capacitors, but each one requires its own transfer capacitors and input capacitor. If both a TPS60130 and a TPS60131 are used, it is possible to monitor the battery voltage with the TPS60130 using the low-battery comparator function and to supervise the output voltage with the TPS60131 using the power-good comparator. Make the layout of the charge pumps as similar as possible, and position the output capacitor the same distance from both devices. IN IN LBI C1+ C1– ENABLE PGND GND OUT OUT FB LBO C2+ C2– C o 47 mF Ci 15 mF Output
5 V, 600 mA
2.2 mF 2.2 mF 562 kW 453 kW Input 2.7 V to 5.4 V Off/On IN IN NC C1+ C1– ENABLE PGND GND OUT OUT FB PG C2+ C2– 2.2 mF 2.2 mF C i 15 mFR3 1 MW Low Battery Warning Power-Good Signal 1 MW TPS60130 TPS60131 Figure 25. Paralleling of Two TPS6013x Charge Pumps
TPS60130, TPS60131, TPS60132, TPS60133 REGULATED 5-V, 300 mA HIGH EFFICIENCY CHARGE PUMP DC/DC CONVERTERS SLVS258A – NOVEMBER 1999 – REVISED DECEMBER 1999
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TPS6013x operated with ultra-low quiescent current Because the output of the TPS6013x is isolated from the input when the devices are disabled, and because the internal resistive divider is disconnected in shutdown, an ultra-low quiescent current mode can be implemented. In this mode, the output voltage is sustained because the converter is periodically enabled to refresh the output capacitor. The necessary external control signal that is applied to the ENABLE-pin is generated from a microcontroller. For a necessary supply current for the system of 1 mA and a minimum supply voltage of 4.5 V with a 33-mF output capacitor, the refresh has to be done after 9 ms. Longer refresh periods can be achieved with a larger output capacitor. IN IN LBI C1+ C1– ENABLE PGND GND OUT OUT FB LBO C2+ C2– 33 mF C i 15 mF Output
5 V, 150 mA
2.2 mF 2.2 mF Input 2.7 V to 5.4 V ON OFF 1 mF 1 MW 1 MW I O mC TPS60132 Figure 26. TPS60132 in Ultra-Low Quiescent Current Mode one solution to this problem. Figure 27. Block Diagram of the Regulated Discharge of the Output Capacitor
TPS60130, TPS60131, TPS60132, TPS60133 REGULATED 5-V, 300 mA HIGH EFFICIENCY CHARGE PUMP DC/DC CONVERTERS SLVS258A – NOVEMBER 1999 – REVISED DECEMBER 1999 21POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 For more application information see: /C0068PowerPAD Application Report, Literature Number SLMA002 /C0068TPS6010x/TPS6011x Charge Pump Application Report, Literature Number SLVA070 /C0068Powering the TMS320C5420 Using the TPS60100, TPS76918, and the TPS3305-18, Literature Number SLVA082. device family products Other devices in this family are: PART NUMBER DATASHEET LITERATURE CODE TPS60100 SLVS213B Regulated 3.3-V, 200-mA low-noise charge pump dc-dc converter TPS60101 SLVS214A Regulated 3.3-V, 100-mA low-noise charge pump dc-dc converter TPS60110 SLVS215A Regulated 5-V, 300-mA low-noise charge pump dc-dc converter TPS60111 SLVS216A Regulated 5-V, 150-mA low-noise charge pump dc-dc converter TPS60120 SLVS257 Regulated 3.3-V, 200-mA high efficiency charge pump dc-dc converter with low-battery comparator TPS60121 SLVS257 Regulated 3.3-V, 200-mA high efficiency charge pump dc-dc converter with power-good comparator TPS60122 SLVS257 Regulated 3.3-V, 100-mA high efficiency charge pump dc-dc converter with low-battery comparator TPS60123 SLVS257 Regulated 3.3-V, 100-mA high efficiency charge pump dc-dc converter with power-good comparator
TPS60130, TPS60131, TPS60132, TPS60133 REGULATED 5-V, 300 mA HIGH EFFICIENCY CHARGE PUMP DC/DC CONVERTERS SLVS258A – NOVEMBER 1999 – REVISED DECEMBER 1999
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PWP (R-PDSO-G) PowerPAD PLASTIC SMALL-OUTLINE 4073225/F 10/98 0,50 0,75 0,25 0,15 NOM Thermal Pad (See Note D) Gage Plane 2824 7,70 7,90 6,40 6,60 9,60 9,80 6,60 6,20 0,19 4,50 4,30 0,15 A 0,30 1,20 MAX 1614 5,10 4,90 PINS 4,90 5,10 DIM A MIN A MAX 0,05 Seating Plane 0,65 0,10 M0,10 0°–8°
20 PINS SHOWN
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 protrusions. D. The package thermal performance may be enhanced by bonding the thermal pad to an external thermal plane. This pad is electrically and thermally connected to the backside of the die and possibly selected leads. E. Falls within JEDEC MO-153 PowerPAD is a trademark of Texas Instruments Incorporated.
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