Datasheet

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22uF

1.8V / 1A

10uF

2.2µH

(3 .. 17)V

3.3nF

TPS62151

PVIN

AVIN

SS/TR

DEF

FSW

VOS

AGND

PGND

100k

TPS62150, TPS62150A

TPS62151, TPS62152, TPS62153

www.ti.com

SLVSAL5B –NOVEMBER 2011–REVISED JUNE 2013

3-17V 1A Step-Down Converter in 3x3 QFN Package

Check for Samples: TPS62150, TPS62150A, TPS62151, TPS62152, TPS62153

FEATURES

DESCRIPTION

The TPS6215X family is an easy to use synchronous

• DCS-Control

Topology

step down DC-DC converter optimized for

• Input Voltage Range: 3 to 17V

applications with high power density. A high switching

• Up to 1A Output Current

frequency of typically 2.5MHz allows the use of small

inductors and provides fast transient response as well

• Adjustable Output Voltage from 0.9 to 6V

as high output voltage accuracy by utilization of the

• Pin-Selectable Output Voltage (nominal, + 5%)

DCS-Control™ topology.

• Programmable Soft Start and Tracking

With its wide operating input voltage range of 3V to

• Seamless Power Save Mode Transition

17V, the devices are ideally suited for systems

• Quiescent Current of 17µA (typ.)

powered from either a Li-Ion or other batteries as well

as from 12V intermediate power rails. It supports up

• Selectable Operating Frequency

to 1A continuous output current at output voltages

• Power Good Output

between 0.9V and 6V (with 100% duty cycle mode).

• 100% Duty Cycle Mode

The output voltage startup ramp is controlled by the

• Short Circuit Protection

soft-start pin, which allows operation as either a

• Over Temperature Protection

standalone power supply or in tracking configurations.

Power sequencing is also possible by configuring the

• Available in a 3 × 3 mm, QFN-16 Package

Enable and open-drain Power Good pins.

APPLICATIONS

In Power Save Mode, the devices show quiescent

current of about 17μA from VIN. Power Save Mode,

• Standard 12V Rail Supplies

entered automatically and seamlessly if load is small,

• POL Supply from Single or Multiple Li-Ion

maintains high efficiency over the entire load range.

Battery

In Shutdown Mode, the device is turned off and

• Solid-State Disk Drives shutdown current consumption is less than 2μA.

• Embedded Systems

The device, available in adjustable and fixed output

voltage versions, is packaged in a 16-pin QFN

• LDO replacement

package measuring 3 × 3 mm (RGT).

• Mobile PCs, Tablet, Modems, Cameras

spacing

Figure 1. Typical Application and Efficiency

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 the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (35 pages)

PAGE 1
TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 www.ti.com SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 3-17V 1A Step-Down Converter in 3x3 QFN Package Check for Samples: TPS62150, TPS62150A, TPS62151, TPS62152, TPS62153 FEATURES DESCRIPTION 1 • • • • • • • • • • • • • • TM DCS-Control Topology Input Voltage Range: 3 to 17V Up to 1A Output Current Adjustable Output Voltage from 0.
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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 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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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 www.ti.
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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 www.ti.com DEVICE INFORMATION SW 3 PG 4 PGND VOS EN 13 Exposed Thermal Pad 5 6 7 8 DEF 2 14 FSW SW 15 AGND 1 16 FB SW PGND RGT PACKAGE (TOP VIEW) 12 PVIN 11 PVIN 10 AVIN 9 SS/TR Terminal Functions PIN (1) NAME NO. I/O DESCRIPTION SW 1,2,3 O Switch node, which is connected to the internal MOSFET switches. Connect inductor between SW and output capacitor.
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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 www.ti.com SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 FUNCTIONAL BLOCK DIAGRAM PG Soft start Thermal Shtdwn UVLO AVIN PVIN PVIN PG control HS lim comp EN* SW SS/TR power control control logic gate drive SW DEF* SW FSW* comp LS lim VOS direct control & compensation ramp _ FB comparator + timer tON error amplifier DCS - ControlTM * This pin is connected to a pull down resistor internally (see Detailed Description section).
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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 www.ti.com PG Soft start Thermal Shtdwn UVLO AVIN PVIN PVIN PG control HS lim comp EN* SW SS/TR power control control logic DEF gate drive SW * SW FSW* comp LS lim VOS direct control & compensation ramp _ FB* comparator + timer tON error amplifier DCS - ControlTM * This pin is connected to a pull down resistor internally (see Detailed Description section). AGND PGND PGND Figure 3.
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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 www.ti.com SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 PARAMETER MEASUREMENT INFORMATION List of Components REFERENCE DESCRIPTION IC 17V, 1A Step-Down Converter, QFN MANUFACTURER L1 2.2µH, 3.1A, 0.165 x 0.165 in Cin 10µF, 25V, Ceramic Standard Cout 22µF, 6.
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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 www.ti.com EFFICIENCY vs OUTPUT CURRENT EFFICIENCY vs INPUT VOLTAGE 100.0 100.0 90.0 90.0 80.0 70.0 VIN=12V VIN=17V Efficiency (%) Efficiency (%) 80.0 60.0 50.0 40.0 30.0 10.0 IOUT=10mA 50.0 IOUT=1mA IOUT=1A IOUT=100mA 40.0 0.001 0.01 Output Current (A) 0.1 VOUT=5.0V L=2.2uH (XFL4020) Cout=22uF 20.0 10.0 0.0 1 7 8 9 10 G001 11 12 13 Input Voltage (V) 14 15 16 Figure 6.
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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 www.ti.com SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 EFFICIENCY vs INPUT VOLTAGE 100.0 100.0 90.0 90.0 80.0 80.0 70.0 70.0 60.0 VIN=12V 50.0 Efficiency (%) Efficiency (%) EFFICIENCY vs OUTPUT CURRENT VIN=17V VIN=5V 40.0 30.0 10.0 0.0 0.0001 IOUT=1mA IOUT=10mA IOUT=1A 40.0 0.001 0.01 Output Current (A) 0.1 VOUT=3.3V L=2.2uH (XFL4020) Cout=22uF 20.0 10.0 0.
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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 www.ti.com OUTPUT VOLTAGE vs OUTPUT CURRENT OUTPUT VOLTAGE vs INPUT VOLTAGE 3.40 3.40 3.30 VIN=5V 3.25 VOUT=3.3V L=2.2uH (XFL4020) Cout=22uF 0.001 0.01 Output Current (A) 0.1 IOUT=10mA 3.30 IOUT=1A IOUT=100mA 3.25 VOUT=3.3V L=2.2uH (XFL4020) Cout=22uF 4 7 10 13 Input Voltage (V) G001 16 G001 Figure 17. Output Voltage Accuracy (Load Regulation) Figure 18.
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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 www.ti.com SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 STATIC DRAIN-SOURCE-RESISTANCE (RDSon) vs INPUT VOLTAGE STATIC DRAIN-SOURCE-RESISTANCE (RDSon) vs INPUT VOLTAGE 100.0 200.0 160.0 125°C RDSon Low−Side (mΩ) RDSon High−Side (mΩ) 180.0 140.0 85°C 120.0 100.0 25°C 80.0 −10°C 60.0 −40°C 40.0 80.0 125°C 60.0 85°C 25°C 40.0 −10°C 20.0 −40°C 20.0 0.0 0.0 3.0 6.0 9.0 12.0 Input Voltage (V) 15.0 0.0 0.0 18.0 20.0 18.0 20.
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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 12 www.ti.com OUTPUT VOLTAGE vs TIME OUTPUT VOLTAGE vs TIME Figure 29. PWM-PSM-Transition (VIN=12V, VOUT=3.3V with 50mV/div) Figure 30. Load Transient Response (IOUT= 0.5 to 1 to 0.5 A, VIN=12V, VOUT=3.3V) OUTPUT VOLTAGE vs TIME OUTPUT VOLTAGE vs TIME Figure 31. Line Transient Response of Figure 30, rising edge Figure 32.
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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 www.ti.com SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 OUTPUT VOLTAGE vs TIME OUTPUT VOLTAGE vs TIME Figure 33. Startup into 100mA (VIN=12V, VOUT=3.3V) Figure 34. Startup into 1A (VIN=12V, VOUT=3.3V) PWM SIGNALS vs TIME POWER SAVE MODE SIGNALS vs TIME Figure 35. Typical Operation in PWM Mode (IOUT=1A) Figure 36.
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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 www.ti.com DETAILED DESCRIPTION Device Operation The TPS6215X synchronous switched mode power converters are based on DCS-Control™ (Direct Control with Seamless Transition into Power Save Mode), an advanced regulation topology, that combines the advantages of hysteretic, voltage mode and current mode control including an AC loop directly associated to the output voltage.
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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 www.ti.com SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 100% Duty-Cycle Operation The duty cycle of the buck converter is given by D=Vout/Vin and increases as the input voltage comes close to the output voltage. In this case, the device starts 100% duty cycle operation turning on the high-side switch 100% of the time. The high-side switch stays turned on as long as the output voltage is below the internal setpoint.
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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 I peak ( typ ) = I LIMF + www.ti.com VL × t PD L (4) where ILIMF is the static current limit, specified in the ELECTRICAL CHARACTERISTICS, L is the inductor value, VL is the voltage across the inductor (VIN - VOUT) and tPD is the internal propagation delay. The current limit can exceed static values, especially if the input voltage is high and very small inductances are used.
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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 www.ti.com SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 APPLICATION INFORMATION The following information is intended to be a guideline through the individual power supply design process. Programming The Output Voltage While the output voltage of the TPS62150 is adjustable, the TPS62151/2/3 are programmed to fixed output voltages. For fixed output versions, the FB pin is pulled down internally and may be left floating.
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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 DI L(max) = VOUT V æ ç 1 - OUT V ç IN (max) ×ç L(min) × f SW ç ç è www.ti.com ö ÷ ÷ ÷ ÷ ÷ ø (8) where IL(max) is the maximum inductor current, ΔIL is the Peak to Peak Inductor Ripple Current, L(min) is the minimum effective inductor value and fSW is the actual PWM Switching Frequency.
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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 www.ti.com SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 Input Capacitor For most applications, 10µF will be sufficient and is recommended, though a larger value reduces input current ripple further. The input capacitor buffers the input voltage for transient events and also decouples the converter from the supply.
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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 www.ti.com Once the SS/TR pin voltage reaches about 1.2V, the internal voltage is clamped to the internal feedback voltage and device goes to normal regulation. This works for rising and falling tracking voltages with the same behavior, as long as the input voltage is inside the recommended operating conditions. For decreasing SS/TR pin voltage, the device doesn't sink current from the output.
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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 www.ti.com f zero = SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 1 2p × R1 × 25 pF (13) spacing f pole = 1 2p × 25 pF æ 1 1 ö ÷÷ × çç + R R 2 ø è 1 (14) spacing Though the TPS6215x devices are stable without the pole and zero being in a particular location, adjusting their location to the specific needs of the application can provide better performance in Power Save mode and/or improved transient response.
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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 GND R2 8 C PVIN AVIN www.ti.com 7 R1 6 5 9 4 10 3 11 2 12 1 13 CIN 14 15 PG 16 EN L1 to GND plane VOUT COUT to AGND GND Figure 39. Layout Example THERMAL INFORMATION Implementation of integrated circuits in low-profile and fine-pitch surface-mount packages typically requires special attention to power dissipation.
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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 www.ti.com SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 Application Example As Power LED Supply The TPS62150 can be used as a power supply for power LEDs. The FB pin can be easily set down to lower values than nominal by using the SS/TR pin. With that, the voltage drop on the sense resistor is low to avoid excessive power loss. Since this pin provides 2.5µA, the FB pin voltage can be adjusted by an external resistor per Equation 15.
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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 www.ti.com spacing spacing spacing (3.3 .. 17)V 3.3V / 1A 2.2 µH 10uF PVIN SW AVIN VOS 100k PG EN 22uF TPS62152 FB SS/TR 3.3nF DEF AGND FSW PGND Figure 42. 3.3V/1A Power Supply spacing spacing spacing (3 .. 17)V 2.5V / 1A 2.2 µH PVIN SW AVIN VOS 100k PG EN 10uF 390k 22uF TPS62150 FB SS/TR 3.3nF DEF AGND FSW PGND 180k Figure 43. 2.5V/1A Power Supply spacing spacing spacing (3 .
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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 www.ti.com SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 spacing spacing spacing (3 .. 17)V 1.5V / 1A 2.2 µH PVIN SW AVIN VOS 100k PG EN 10uF 130k 22uF TPS62150 FB SS/TR 3.3nF DEF AGND FSW PGND 150k Figure 45. 1.5V/1A Power Supply spacing spacing spacing (3 .. 17)V 1.2V / 1A 2.2 µH PVIN SW AVIN VOS 100k PG EN 10uF 75k 22uF TPS62150 FB SS/TR 3.3nF DEF AGND FSW PGND 150k Figure 46. 1.
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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 www.ti.com Application Example As Inverting Power Supply spacing The TPS62150 can be used as inverting power supply by rearranging external circuitry as shown in Figure 48. As the former GND node now represents a voltage level below system ground, the voltage difference between VIN and VOUT has to be limited for operation to the maximum supply voltage of 17V (see Equation 16).
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TPS62150, TPS62150A TPS62151, TPS62152, TPS62153 www.ti.com SLVSAL5B – NOVEMBER 2011 – REVISED JUNE 2013 REVISION HISTORY Changes from Original (November 2011) to Revision A Page • Added values to the Initial output voltage accuracy for TA = –10°C to 85°C ....................................................................... 3 • Changed the description of the AGND pin, and added Note 3. ...........................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 23-Jul-2013 (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device.
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PACKAGE MATERIALS INFORMATION www.ti.com 13-Jul-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing TPS62150ARGTR QFN RGT 16 TPS62150ARGTT QFN RGT TPS62150RGTR QFN RGT TPS62150RGTT QFN TPS62151RGTR SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 3000 330.0 12.4 3.3 3.3 1.1 8.0 12.0 Q2 16 250 180.0 12.4 3.3 3.3 1.1 8.0 12.0 Q2 16 3000 330.0 12.4 3.3 3.3 1.1 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 13-Jul-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS62150ARGTR QFN RGT 16 3000 552.0 367.0 36.0 TPS62150ARGTT QFN RGT 16 250 552.0 185.0 36.0 TPS62150RGTR QFN RGT 16 3000 552.0 367.0 36.0 TPS62150RGTT QFN RGT 16 250 552.0 185.0 36.0 TPS62151RGTR QFN RGT 16 3000 552.0 367.0 36.0 TPS62151RGTT QFN RGT 16 250 552.0 185.0 36.
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