Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - DC/DC voltage regulator Converter/amplifier WCSP 8

VIN

PS/SYNC

GND

VOUT

1.5µH

TPS63036

10µF

3X10µF

287kΩ

51.1kΩ

OUT

3.3V

/600mA

1.8 V to

5.5 V

TPS63036

www.ti.com

SLVSB76 –AUGUST 2012

HIGH-EFFICIENCY SINGLE INDUCTOR BUCK-BOOST CONVERTER In Tiny WCSP

Check for Samples: TPS63036

FEATURES

DESCRIPTION

The TPS63036 is a non inverting buck-boost

• Input Voltage Range: 1.8V to 5.5V

converter able to provide a regulated output voltage

• Real Buck or Boost operation

from an input supply that can be higher or lower than

• Adjustable and fixed output voltage version

the output voltage. The buck-boost converter is based

on a fixed frequency, pulse-width-modulation (PWM)

• Up to 94% Efficiency

controller using synchronous rectification to obtain

• Device Quiescent Current less than 50μA

maximum efficiency. At low load currents, the

• Fixed and Adjustable Output Voltage Options

converter enters Power Save Mode to maintain high

efficiency over a wide load current range. The Power

• Power Save Mode for Improved Efficiency at

Save mode can be disabled, forcing the converter to

Low Output Power

operate at a fixed switching frequency. The maximum

• Forced Fixed Frequency Operation and

average current in the switches is limited to a typical

Synchronization Possible

value of 1000 mA. The output voltage is

• Load Disconnect During Shutdown

programmable using an external resistor divider. The

converter can be disabled to minimize battery drain.

• Over-Temperature Protection

During shutdown, the load is disconnected from the

• Available in Small 1.854 mm x 1.076 mm,

battery. The device is packaged 8-pin WCSP

WCSP-8 Package

package measuring 1.854 mm x 1.076 mm (YFG).

APPLICATIONS

• All 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

• White LEDs

Figure 1. Typical Circuit

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.

2Buck-Boost Overlap Control 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.

Summary of content (25 pages)

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TPS63036 www.ti.com SLVSB76 – AUGUST 2012 HIGH-EFFICIENCY SINGLE INDUCTOR BUCK-BOOST CONVERTER In Tiny WCSP Check for Samples: TPS63036 FEATURES DESCRIPTION • • • • • • • The TPS63036 is a non inverting buck-boost converter able to provide a regulated output voltage from an input supply that can be higher or lower than the output voltage. The buck-boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain maximum efficiency.
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TPS63036 SLVSB76 – AUGUST 2012 www.ti.com 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.
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TPS63036 www.ti.com SLVSB76 – AUGUST 2012 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 VIN Input voltage range VOUT TPS63036 output voltage range TEST CONDITIONS MIN V 5.
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TPS63036 SLVSB76 – AUGUST 2012 www.ti.com PIN ASSIGNMENTS A2 B2 C2 D2 A1 B1 C1 D1 Figure 2. WCSP (YFG) Package - Top view Terminal Functions TERMINAL NAME NO. I/O DESCRIPTION EN A2 I Enable input.
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TPS63036 www.ti.
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TPS63036 SLVSB76 – AUGUST 2012 www.ti.com TYPICAL CHARACTERISTICS TABLE OF GRAPHS DESCRIPTION1 FIGURE Minimum input current vs Input voltage (TPS63036, VOUT = 2.5 V VOUT = 3.3V VOUT = 4.5 V) 3 Maximum input current vs Input voltage (TPS63036, VOUT = 2.5 V VOUT = 3.3V VOUT = 4.5 V) 4 vs Output current (TPS63036, Power Save Enabled, VOUT = 2.5 V / VOUT = 4.5 V) 5 vs Output current (TPS63036, Power Save Disabled, VOUT = 2.5 V / VOUT = 4.
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TPS63036 www.ti.com SLVSB76 – AUGUST 2012 EFFICIENCY vs OUTPUT CURRENT EFFICIENCY vs OUTPUT CURRENT 100 100 VIN =3.6V VOUT=2.5V VIN =3.6V VOUT=4.5V 90 90 80 80 70 70 60 50 Efficiency- % Efficiency- % VIN =2.4V VOUT=2.5V VIN =3.6V VOUT=4.5V VIN =2.4V VOUT=4.5V 40 60 40 30 20 20 10 10 1 10 100 VIN =3.6V VOUT= =2.5V 50 30 0 0.1 VIN = =2.4V VOUT=2.5V VIN =2. =2.4V VOUT=4.5V 0 0.1 1000 1 10 100 Output Current - mA Output Current - mA Figure 5. Figure 6.
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TPS63036 SLVSB76 – AUGUST 2012 www.ti.com EFFICIENCY vs INPUT VOLTAGE EFFICIENCY vs INPUT VOLTAGE 100 100 VOUT= 2.5V VOUT= 2.5V IOUT= 100mA 80 IOUT=10mA IOUT= 100mA IOUT= 500mA 70 Efficiency - % Efficiency - % 80 IOUT= 500mA 90 90 60 50 40 70 IOUT=10mA 60 50 40 30 30 20 20 10 10 Power Save Enabled 0 1.8 2.2 2.6 3 3.4 3.8 4.2 4.6 5 5.4 Power Save Disabled 0 1.8 5.8 3 3.4 3.8 4.6 Figure 10. EFFICIENCY vs INPUT VOLTAGE EFFICIENCY vs INPUT VOLTAGE 5 5.4 5.
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TPS63036 www.ti.com SLVSB76 – AUGUST 2012 EFFICIENCY vs INPUT VOLTAGE EFFICIENCY vs INPUT VOLTAGE 100 100 VOUT= 4.5V 90 VOUT= 4.5V IOUT= 100mA 90 IOUT= 500mA 80 IOUT= 500mA 70 Efficiency - % Efficiency - % 80 60 IOUT=10mA 50 40 70 60 50 IOUT=10mA 40 30 30 20 20 10 IOUT= 100mA 10 Power Save Disabled Power Save Enabled 0 1.8 2.2 2.6 3 3.4 3.8 4.2 4.6 5 5.4 0 1.8 5.8 2.2 2.6 3 3.4 3.8 4.2 4.6 Input Voltage - V Input Voltage - V Figure 13. Figure 14.
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TPS63036 SLVSB76 – AUGUST 2012 www.ti.com OUTPUT VOLTAGE vs OUTPUT CURRENT 4.85 VOUT= 4.5 V VIN= 3.6 V Output Voltage - V 4.76 4.67 4.58 4.49 Power Save Disabled 4.4 1 10 100 1000 Output Current - mA Figure 17. LOAD TRANSIENT RESPONSE LOAD TRANSIENT RESPONSE VIN= 4.2 V, IOUT= 0A to 150mA VIN= 2.4 V, IOUT= 0A to 150mA Output Voltage 50mV/div, AC Output Voltage 50mV/div, AC Output Current 100mA/div VOUT= 3.3 V 10 Output Current 100mA/div VOUT= 3.
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TPS63036 www.ti.com SLVSB76 – AUGUST 2012 LINE TRANSIENT RESPONSE STARTUP AFTER ENABLE VIN= 3 V to 3.6 V, IOUT= 150mA Enable Voltage 5V/div, DC Output Voltage 1V/div, DC Input Voltage 500mV/div, AC Inductor Current 200mA/div Output Voltage 20mV/div, AC Voltage at L2 2V/div, DC VOUT= 3.3 V VOUT= 3.3 V VIN= 2.4 V, RL= 33S Time 2ms/Div Time 100:s/Div Figure 20. Figure 21.
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TPS63036 SLVSB76 – AUGUST 2012 www.ti.com PARAMETER MEASUREMENT INFORMATION L1 1.5µH VIN 1.8 V to 5.5 V L1 VIN VOUT R1 287kΩ EN C1 VOUT 3.3V/600mA L2 10µF PS/SYNC C2 3X10µF FB R2 GND 51.1kΩ TPS63036 Figure 23. Parameter Measurement Circuit Table 1. List of Components REFERENCE DESCRIPTION MANUFACTURER TPS63036 Texas Instruments L1 1.5 μH, 3 mm x 3 mm x 1.5 mm Coilcraft, LPS3015-152MLC C1 10 μF 6.3V, 0603, X7R ceramic GRM188R60J106KME84D, Murata C2 3 × 10 μF 6.
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TPS63036 www.ti.com SLVSB76 – AUGUST 2012 DETAILED DESCRIPTION The controller circuit of the device is based on an average current mode topology. The controller also uses input and output voltage feedforward. Changes of input and output voltage are monitored and immediately can change the duty cycle in the modulator to achieve a fast response to those errors. The voltage error amplifier gets its feedback input from the FB pin. A resistive voltage divider must be connected to that pin.
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TPS63036 SLVSB76 – AUGUST 2012 www.ti.com TM Figure 24. Average Current Mode Control Power-save mode and synchronization The PS/SYNC pin can be used to select different operation modes. Power Save Mode is used to improve efficiency at light load. To enable Power Save Mode, PS/SYNC must be set low. If PS/SYNC is set low then Power Save Mode is entered when the average inductor current gets lower then about 100mA.
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TPS63036 www.ti.com SLVSB76 – AUGUST 2012 Given the average input current in figure 3 is then possible to calculate the output current reached in boost mode using Equation 1 and Equation 2 and in buck mode using Equation 3 and Equation 4.
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TPS63036 SLVSB76 – AUGUST 2012 www.ti.com APPLICATION INFORMATION DESIGN PROCEDURE The TPS63036 buck-boost converter has internal loop compensation. Therefore, the external L-C filter has to be selected to work with the internal compensation. As a general rule of thumb, the product L×C should not move over a wide range when selecting a different output filter.
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TPS63036 www.ti.com f RHPZ = SLVSB76 – AUGUST 2012 (1 - D)2 ´ Vout 2p ´ Iout ´ L (7) With, D =Duty Cycle in Boost mode Note: The calculation must be done for the minimum input voltage which is possible to have in boost mode Table 3. Inductor Selection INDUCTOR VALUE COMPONENT SUPPLIER SIZE (LxWxH mm) Isat/DCR 1 µH TOKO 1286AS-H-1R0M 2x1.6x1.2 2.3A/78mΩ 1 µH Coilcraft XFL4020-102 4 x 4 x 2.1 5.1A/10.8 mΩ 1 µH Coilcraft XFL3012-102 3 x 3 x 1.2 2.2 A/35 mΩ 1.
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TPS63036 SLVSB76 – AUGUST 2012 www.ti.com LAYOUT CONSIDERATIONS For all switching power supplies, the layout is an important step in the design, especially at high peak currents and high switching frequencies. If the layout is not carefully done, the regulator could show stability problems as well as EMI problems. Therefore, use wide and short traces for the main current path and for the ground tracks. The input capacitor, output capacitor, and the inductor should be placed as close as possible to the IC.
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TPS63036 www.ti.com SLVSB76 – AUGUST 2012 TYPICAL APPLICATION L1 1.5µH VIN 2.3 V to 5V L1 VIN VOUT EN C1 10µF VOUT 3.3V/100mA L2 R1 287kΩ PS/SYNC C3 10pF C2 3X10µF FB R2 GND 51.1kΩ TPS63036 Figure 25.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 6-Oct-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) TPS63036YFGR DSBGA YFG 8 3000 180.0 8.4 TPS63036YFGT DSBGA YFG 8 250 180.0 8.4 Pack Materials-Page 1 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 1.2 2.0 0.7 4.0 8.0 Q1 1.2 2.0 0.7 4.0 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 6-Oct-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS63036YFGR DSBGA YFG 8 3000 210.0 185.0 35.0 TPS63036YFGT DSBGA YFG 8 250 210.0 185.0 35.
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