Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - DC/DC voltage regulator Converter, Converter/amplifier WSON 10

TPS62177

VIN

SLEEP

AGND

PGND

VOS

4.75 to 28V

3.3V/0.5A

10uH

22uF2.2uF

100k

TPS62175, TPS62177

www.ti.com

SLVSB35B –OCTOBER 2012–REVISED JANUARY 2014

28V, 0.5A Step-Down Converter with Sleep Mode

Check for Samples: TPS62175, TPS62177

FEATURES

DESCRIPTION

The TPS62175/7 is a high efficiency synchronous

• DCS-Control™ Topology

step-down DC-DC converter, based on the DCS-

• Input Voltage Range 4.75 to 28V

Control™ topology.

• Quiescent Current typ. 4.8µA (Sleep Mode)

With a wide operating input voltage range of 4.75 to

• 100% Duty Cycle Mode

28V, the device is ideally suited for systems powered

• Active Output Discharge

from multi cell Li-Ion as well as 12V and even higher

intermediate supply rails, providing up to 500mA

• Power Good Output

output current.

• Output Current of 500mA

The TPS62175/7 automatically enters Power Save

• Output Voltage Range 1V to 6V

Mode at light loads, to maintain high efficiency across

• Switching Frequency of Typically 1MHz

the whole load range. As well, it features a Sleep

• Seamless Power Save Mode Transition

Mode to supply applications with advanced power

save modes like ultra low power micro controllers.

• Undervoltage Lockout

The Power Good output may be used for power

• Short Circuit Protection

sequencing and/or Power On Reset.

• Over Temperature Protection

The device features a typical quiescent current of

• Available in 2 x 3 mm 10-pin WSON Package

22uA in normal mode and 4.8uA in Sleep Mode. In

Sleep Mode, the efficiency at very low load currents

APPLICATIONS

can be increased by as much as 20%. In shutdown

mode, the shutdown current is less than 2uA and the

• General 12V/24V Point Of Load Supply

output is actively discharged.

• Ultra Mobile PC, Embedded PC

The TPS62175/7, available in an adjustable and a

• Low Power Supply for Microprocessor

fixed output voltage version, is packaged in a small

• High Efficiency LDO Alternative

2x3mm 10-pin WSON package.

• Industrial Sensors

spacingspacing

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.

2DCS-Control is a trademark of Texas Instruments.

3ARM Cortex is a trademark of ARM Limited.

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 (36 pages)

PAGE 1
TPS62175, TPS62177 www.ti.com SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 28V, 0.5A Step-Down Converter with Sleep Mode Check for Samples: TPS62175, TPS62177 FEATURES DESCRIPTION • • • • • • • • • • • • • • The TPS62175/7 is a high efficiency synchronous step-down DC-DC converter, based on the DCSControl™ topology. 1 23 DCS-Control™ Topology Input Voltage Range 4.75 to 28V Quiescent Current typ. 4.
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TPS62175, TPS62177 SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 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. ORDERING INFORMATION (1) (2) TA OUTPUT VOLTAGE -40°C to 85°C (1) (2) (2) PART NUMBER adjustable TPS62175 3.
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TPS62175, TPS62177 www.ti.com SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 ELECTRICAL CHARACTERISTICS over free-air temperature range (TA=-40°C to +85°C) and VIN=4.75 to 28V. Typical values at VIN=12V and TA=25°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY VIN Input Voltage Range IQ Operating Quiescent Current EN=High, SLEEP=High, IOUT=0mA, device not switching 4.
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TPS62175, TPS62177 SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 www.ti.com ELECTRICAL CHARACTERISTICS (continued) over free-air temperature range (TA=-40°C to +85°C) and VIN=4.75 to 28V. Typical values at VIN=12V and TA=25°C (unless otherwise noted) PARAMETER TEST CONDITIONS TPS62175 (adjustable Vout), VIN ≥ VOUT +1V Output Voltage Accuracy (1) Power Save Mode, L=10µH Sleep Mode, IOUT≤15mA TPS62177 (3.
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TPS62175, TPS62177 www.ti.com SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 DEVICE INFORMATION DQC PACKAGE (TOP VIEW) PGND 1 10 VOS VIN 2 9 SW EN 3 8 SLEEP NC 4 7 PG FB 5 6 AGND Exposed Thermal Pad spacingspacing TERMINAL FUNCTIONS PIN (1) I/O DESCRIPTION NAME NO. PGND 1 VIN 2 I Supply voltage for the converter. EN 3 I Enable input (High=Enabled, Low= Disabled) NC 4 FB 5 AGND 6 PG 7 O Output power good.
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TPS62175, TPS62177 SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 www.ti.com FUNCTIONAL BLOCK DIAGRAM PG Soft start Thermal Shtdwn UVLO VIN PG control HS lim comp EN* td=1ms control logic power control NC SLEEP* gate drive SW sleep control VOS direct control & compensation ramp 175 _ FB comparator + EN VREF timer tON, tOFF error amplifier DCS - ControlTM * This pin is connected to a pull down resistor internally (see Detailed Description section). AGND PGND Figure 2.
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TPS62175, TPS62177 www.ti.com SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 PG Soft start Thermal Shtdwn UVLO VIN PG control HS lim comp EN* td=1ms control logic power control NC SLEEP* gate drive SW Sleep control VOS direct control & compensation 1.25M ramp 175 _ FB comparator 400k + EN timer tON,tOFF error amplifier VREF DCS - ControlTM * This pin is connected to a pull down resistor internally (see Detailed Description section). AGND PGND Figure 3.
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TPS62175, TPS62177 SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 www.ti.com PARAMETER MEASUREMENT INFORMATION List of Components REFERENCE DESCRIPTION MANUFACTURER IC 28V, 0.5A Step-Down Converter, WSON TPS62175DQC, Texas Instruments L1 10uH, (4 x 4 x 1.2) mm Cin 2.2µF, 50V, Ceramic, 0805, X5R Standard Cout 22µF, 6.
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TPS62175, TPS62177 www.ti.com SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 EFFICIENCY vs INPUT VOLTAGE 100.0 100.0 90.0 90.0 80.0 80.0 70.0 Efficiency (%) Efficiency (%) EFFICIENCY vs OUTPUT CURRENT VIN=24V 60.0 VIN=12V 50.0 40.0 VIN=7.5 30.0 0.0 0.01 VIN=6V 0.1 1 10 Output Current (mA) 100 0.0 500 6 8 10 12 14 16 18 20 Input Voltage (V) 22 24 26 28 G001 Figure 5. Vout=5V Figure 6. Vout=5V EFFICIENCY vs OUTPUT CURRENT EFFICIENCY vs INPUT VOLTAGE IOUT=1mA 90.0 80.
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TPS62175, TPS62177 SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 www.ti.com EFFICIENCY vs INPUT VOLTAGE 100.0 100.0 90.0 90.0 80.0 80.0 70.0 70.0 60.0 Efficiency (%) Efficiency (%) EFFICIENCY vs OUTPUT CURRENT VIN=24V VIN=12V 50.0 40.0 VIN=7.5 30.0 VOUT=3.3V L=10uH (LPS4012) Cout=22uF VIN=5V 10.0 0.1 1 Output Current (mA) 0.0 10 20 6 8 10 12 14 16 18 20 Input Voltage (V) 22 24 EFFICIENCY vs OUTPUT CURRENT EFFICIENCY vs INPUT VOLTAGE 90.0 80.0 80.0 70.0 70.0 60.
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TPS62175, TPS62177 www.ti.com SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 EFFICIENCY vs OUTPUT CURRENT EFFICIENCY vs INPUT VOLTAGE 100.0 100.0 90.0 70.0 60.0 VIN=7.5 50.0 40.0 30.0 VOUT=1V L=10uH (LPS4012) Cout=2x22uF VIN=5V 10.0 0.1 1 10 Output Current (mA) 60.0 50.0 100 VOUT=1V L=10uH (LPS4012) Cout=2x22uF 10.0 0.0 500 4 6 8 14 16 18 20 Input Voltage (V) EFFICIENCY vs OUTPUT CURRENT EFFICIENCY vs INPUT VOLTAGE 90.0 VIN=24V Efficiency (%) VIN=7.5 50.0 VIN=5V IOUT=100uA 70.
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TPS62175, TPS62177 SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 www.ti.com SWITCHING FREQUENCY vs OUTPUT CURRENT SWITCHING FREQUENCY vs INPUT VOLTAGE 1.5 Switching Frequency (MHz) Switching Frequency (MHz) 1.5 1 0.5 VIN=12V, VOUT=3.3V L=10uH (LPS4012) Cout=22uF 0 0 100 200 300 Output Current (mA) 400 1 IOUT=500mA IOUT=10mA 0 500 VOUT=3.3V L=10uH (LPS4012) Cout=22uF 0.5 4 6 8 10 12 G000 14 16 18 20 Input Voltage (V) 22 26 28 G000 Figure 23. Switching Frequency Figure 24.
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TPS62175, TPS62177 www.ti.com SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 STATIC DRAIN-SOURCE-RESISTANCE (RDSon) vs INPUT VOLTAGE OUTPUT CURRENT vs INPUT VOLTAGE 700 1000 85°C 125°C 800 Output Current (mA) RDSon Low−Side (mΩ) 600 500 400 300 200 600 25°C −40°C 400 VOUT=3.3V L=10uH (LPS4012) Cout=22uF 200 25°C 100 0 0.0 3.0 6.0 −10°C −40°C 9.0 12.0 15.0 18.0 21.0 24.0 27.0 30.
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TPS62175, TPS62177 SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 14 www.ti.com LOAD TRANSIENT RESPONSE LOAD TRANSIENT RESPONSE Figure 35. PWM Mode, VIN=12V, VOUT=3.3V, Iout (200mA to 500mA), falling edge Figure 36. Power Save Mode, VIN=12V, VOUT=3.3V, Iout (50mA to 500mA) LOAD TRANSIENT RESPONSE LOAD TRANSIENT RESPONSE Figure 37. Power Save Mode, VIN=12V, VOUT=3.3V, Iout (50mA to 500mA), rising edge Figure 38. Power Save Mode, VIN=12V, VOUT=3.
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TPS62175, TPS62177 www.ti.com SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 LINE TRANSIENT RESPONSE LINE TRANSIENT RESPONSE Figure 39. PWM Mode, VIN (6V to 12V), Iout=500mA Figure 40. Power Save Mode, VIN (6V to 12V), Iout=10mA STARTUP TO VOUT=3.3V STARTUP CURRENT LIMIT Figure 41. PWM Mode, VIN=12V, Iout=250mA Figure 42. Startup Current Limit, VIN=12V, Rload=6.
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TPS62175, TPS62177 SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 16 www.ti.com STARTUP TO VOUT=3.3V OUTPUT VOLTAGE DISCHARGE Figure 43. Sleep Mode, VIN=12V, Iout=10mA Figure 44. Output Discharge Function (Vout=3.3V, no load) PWM MODE OPERATION POWER SAVE MODE OPERATION Figure 45. Typical Operation in PWM Mode, VIN=12V, VOUT=3.3V, Iout=250mA Figure 46. Typical Operation in Power Save Mode, VIN=12V, VOUT=3.
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TPS62175, TPS62177 www.ti.com SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 POWER SAVE MODE OPERATION SLEEP MODE OPERATION Figure 47. Typical Operation in Power Save Mode, VIN=12V, VOUT=3.3V, Iout=1mA Figure 48. Typical Operation in Sleep Mode, VIN=12V, VOUT=3.3V, Iout=1mA POWER SAVE MODE OPERATION SLEEP MODE OPERATION Figure 49. Typical Operation in Power Save Mode, VIN=12V, VOUT=3.3V, Iout=1mA (single pulse) Figure 50. Typical Operation in Sleep Mode, VIN=12V, VOUT=3.
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TPS62175, TPS62177 SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 18 www.ti.com SHORT CIRCUIT OPERATION SHORT CIRCUIT OPERATION Figure 51. Short circuit while running, VIN=12V Figure 52. Short circuit from startup, VIN=12V TRIANGULAR LOAD SWEEP TRIANGULAR LOAD SWEEP Figure 53. Triangular Load Sweep with Mode Transitions (Power Save Mode - PWM Mode - Power Save Mode), VIN=12V, VOUT=3.3V Figure 54.
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TPS62175, TPS62177 www.ti.com SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 DETAILED DESCRIPTION Device Operation The TPS62175/7 synchronous switch 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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TPS62175, TPS62177 SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 f PSM = www.ti.com 2 × I OUT VIN éVIN - VOUT ù 2 tON úû VOUT êë L (3) Sleep Mode Operation In Sleep Mode operation, the typical quiescent current is reduced from 22µA to 4.8µA to significantly increase the efficiency at load currents of typically less than 1mA (see Figure 1). It is designed to be enabled and disabled during operation by pulling the SLEEP pin High or Low by the host (processor).
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TPS62175, TPS62177 www.ti.com SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 Output Discharge The output is actively discharged through a 175Ω (typ.) resistor on the VOS pin when the device is turned off by EN, UVLO or thermal shutdown. Softstart The internal soft start circuitry controls the output voltage slope during startup. This avoids excessive inrush current and ensures a controlled output voltage rise time. It also prevents unwanted voltage drops from highimpedance power sources or batteries.
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TPS62175, TPS62177 SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 www.ti.com APPLICATION INFORMATION Programming The Output Voltage While the output voltage of the TPS62175 is adjustable, the TPS62177 is programmed to a fixed output voltage of 3.3V. For the fixed output voltage version, the FB pin is pulled low internally by a 400kΩ resistor. It is recommended to connect the FB pin to AGND to improve thermal resistance.
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TPS62175, TPS62177 www.ti.com DI L (max) SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 VOUT æ ç1VIN (max) ×h V = OUT × ç h ç L(min) × f SW ç è ö ÷ ÷ ÷ ÷ ø (7) where ΔIL is the Peak to Peak Inductor Ripple Current, η is the converter efficiency (see efficiency figures), L(min) is the minimum inductor value and fSW is the actual PWM Switching Frequency. Calculating the maximum inductor current using the actual operating conditions gives the minimum saturation current of the inductor needed.
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TPS62175, TPS62177 SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 www.ti.com NOTE DC Bias effect: High capacitance ceramic capacitors have a DC Bias effect, which has a strong influence on the final effective capacitance. Therefore the right capacitor value has to be chosen carefully. Package size and voltage rating in combination with dielectric material are responsible for differences between the rated capacitor value and the effective capacitance.
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TPS62175, TPS62177 www.ti.com SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 THERMAL INFORMATION The TPS62175/7 is designed for a maximum operating junction temperature (Tj) of 125°C. Therefore the maximum output power is limited by the power losses. Since the thermal resistance of the package is given, the size of the surrounding copper area and a proper thermal connection of the IC can reduce the thermal resistance.
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TPS62175, TPS62177 SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 www.ti.com Typical Applications spacingspacing spacingspacing 10uH 5 to 28V VIN TPS62175 EN 2.2uF 5V/0.5A SW 100k VOS SLEEP 22uF PG 787k AGND FB PGND NC 150k Figure 56. 5V/0.5A Power Supply spacingspacing 10uH 4.75 to 28V VIN TPS62177 EN 2.2uF 3.3V/0.5A SW VOS SLEEP PG AGND FB PGND NC 100k 22uF Figure 57. 3.3V/0.5A Power Supply spacingspacing 10uH 4.75 to 28V VIN TPS62175 EN 2.2uF 2.5V/0.
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TPS62175, TPS62177 www.ti.com SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 spacingspacing spacingspacing 10uH 4.75 to 28V VIN TPS62175 EN 2.2uF 1.8V/0.5A SW SLEEP 100k VOS 22uF PG 200k AGND FB PGND NC 160k Figure 59. 1.8V/0.5A Power Supply spacingspacing 10uH 4.75 to 28V VIN TPS62175 EN 2.2uF 1.2V/0.5A SW SLEEP 100k VOS 22uF PG 110k AGND FB PGND NC 130k Figure 60. 1.2V/0.5A Power Supply spacingspacing 10uH 4.75 to 28V VIN TPS62175 EN 2.2uF 1V/0.
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TPS62175, TPS62177 SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 www.ti.com Application Examples spacingspacing Micro Controller Power Supply The TPS6215/7 can be used advantageously as the power supply rail for micro-controllers with low current power save modes. Figure 62 shows the connection of TPS62177 to the Tiva C Series TM4C123x ARM Cortex™ - M4 MCUs (TM4C123x MCUs), using its Hibernate Mode signal to control Sleep Mode operation. More information is found in the Application Report SPMA066.
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TPS62175, TPS62177 www.ti.com SLVSB35B – OCTOBER 2012 – REVISED JANUARY 2014 REVISION HISTORY Changes from Revision A (November 2012) to Revision B Page • Added to SLEEP description in TERMINAL FUNCTIONS table .......................................................................................... 5 • Changed Sleep Mode Operation section ............................................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 19-Jul-2013 continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
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PACKAGE MATERIALS INFORMATION www.ti.com 16-Dec-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing TPS62175DQCR WSON DQC 10 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 3000 180.0 8.4 2.25 3.25 1.05 4.0 8.0 Q1 TPS62175DQCT WSON DQC 10 250 180.0 8.4 2.25 3.25 1.05 4.0 8.0 Q1 TPS62177DQCR WSON DQC 10 3000 180.0 8.4 2.25 3.25 1.05 4.0 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 16-Dec-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS62175DQCR WSON DQC 10 3000 210.0 185.0 35.0 TPS62175DQCT WSON DQC 10 250 210.0 185.0 35.0 TPS62177DQCR WSON DQC 10 3000 210.0 185.0 35.0 TPS62177DQCT WSON DQC 10 250 210.0 185.0 35.
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