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ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - DC/DC voltage regulator Switched-capacitor voltage converter VSSOP 10

 

 

SLVS391B − OCTOBER 2001 − REVISED FEBRUARY 2002

  

  

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FEATURES

Regulated 3.3-V, 1.8-V, 1.5-V, or Adjustable

Output Voltage

D Up to 250-mA Output Current

D 1.8-V to 6.5-V Input Voltage

D Up to 90% Efficiency

D Output Voltage Tolerance 3% Over Line, Load,

and Temperature Variation

D Device Quiescent Current Less Than 40 µA

D Output Voltage Supervisor Included

(Power Good)

D Internal Soft Start

D Load Isolated From Battery During Shutdown

D Overtemperature and Overcurrent Protected

D Micro-Small 10-Pin MSOP Package

D EVM Available, TPS60500EVM-193

APPLICATIONS

Personal Digital Assistants

D DSP Core Supply

D Cellular Phones

D Portable Instruments

D Internet Audio Player

D PC Peripherals

D USB Powered Applications

DESCRIPTION

The TPS6050x devices are a family of step-down

charge pumps that generate a regulated, fixed 3.3-V,

1.8-V, 1.5-V, or adjustable output voltage. Only four

small ceramic capacitors are required 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

three different conversion modes. The output can

deliver a maximum of 250-mA output current. The

power good function supervises the output voltage and

goes high when the output voltage rises to 97% of its

nominal value.

C1F

1 µF

C1F− C1F+

C2F

1 µF

C2F− C2F+

OUT

10 µF

1.8 V

150 mA

VIN

GND

OFF/ON

2.2 µF

Li-ion cell

INPUT

TPS60502

Typical Application Circuit

2 2.5 3 3.5 4 4.5 5 5.5 6 6.5

100

− Input Voltage − V

Efficiency − %

TPS60503

EFFICIENCY

INPUT VOLTAGE

100 mA

150 mA

50 mA

LDO

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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.

Summary of content (25 pages)

PAGE 1
SLVS391B − OCTOBER 2001 − REVISED FEBRUARY 2002 FEATURES D Regulated 3.3-V, 1.8-V, 1.5-V, or Adjustable D D D D D D D D D D D Output Voltage Up to 250-mA Output Current 1.8-V to 6.
PAGE 2
SLVS391B − OCTOBER 2001 − REVISED FEBRUARY 2002 pin assignments DGS PACKAGES (TOP VIEW) EN PG C2F− C2F+ VIN 1 10 2 9 3 8 4 7 5 6 FB GND C1F− OUT C1F+ ACTUAL SIZE 3,05 mm x 4,98 mm AVAILABLE OPTIONS PART NUMBER† MARKING DGS PACKAGE OUTPUT VOLTAGE [V] MINIMUM INPUT VOLTAGE FOR IO = 150 mA TPS60500DGS AVB Adjustable (0.8 V to 3.3 V) VI > VO + 1 TPS60501DGS AVC 3.3 TPS60502DGS AVD 1.8 VI > 4.3 V VI > 2.8 V TPS60503DGS AVE 1.5 VI > 2.
PAGE 3
SLVS391B − OCTOBER 2001 − REVISED FEBRUARY 2002 absolute maximum ratings over operating free-air temperature (unless otherwise noted)† Voltage range at VIN, EN, PG to GND (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to 7 V Voltage range at OUT, FB to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to 3.
PAGE 4
SLVS391B − OCTOBER 2001 − REVISED FEBRUARY 2002 electrical characteristics at Ci = 4.7 µF, C1F = C2F = 1 µF, Co = 10 µF, TA = −40°C to 85°C, VI = 5 V, V(EN) = GND (unless otherwise noted) PARAMETER VI TEST CONDITIONS Supply voltage range Maximum output current TPS60501 Output voltage V(FB) Feedback voltage TPS60502 Tolerance of output voltage 250 VO > 2.5 V, VI > VO + 1.2 V 250 mA 250 0.8 3.3 3.30 VI > 2.7V; VI−VO > 1 V at IOUT ≤ 150 mA VI > 1.
PAGE 5
SLVS391B − OCTOBER 2001 − REVISED FEBRUARY 2002 functional block diagram TPS6050x VIN VIN 2/3 1/2 Skip Gear Logic 800 KHz CLK EN Driver 1/3 C1F C2F EN = ON/OFF OUT EN Start−up Thermal and Short-Circuit Current Limit OUT FB Skip V_REG Regulator Amplifier PG PG Bandgap 0.
PAGE 6
SLVS391B − OCTOBER 2001 − REVISED FEBRUARY 2002 TYPICAL CHARACTERISTICS TPS60501 MINIMUM INPUT VOLTAGE vs OUTPUT CURRENT 3.6 VO Threshold: VO nom −3% = 1.455 V 3.20 3 TA = 85°C 2.80 TA = 25°C 2.60 4.3 VO Threshold: VO nom −3% = 1.746 V 3.4 V I(min) − Input Voltage − V 2.40 2.20 TA = −40°C 2 1.80 3.2 3 2.8 −40°C 25°C 2.6 2.4 2.2 85°C 2 1.60 0 50 100 150 200 IO − Output Current − mA 50 3.6 3.
PAGE 7
SLVS391B − OCTOBER 2001 − REVISED FEBRUARY 2002 TYPICAL CHARACTERISTICS TPS60500 TPS60501 OUTPUT VOLTAGE vs OUTPUT CURRENT OUTPUT VOLTAGE vs OUTPUT CURRENT VO− Output Voltage − V VO − Output Voltage − V VI = 3.6 V 1.81 1.80 1.79 VI = 3.3 V 1.78 VO Adjusted to 0.8 V 0.85 VI = 5 V 1.82 3.36 0.86 Co = 10 µF, 1.83 1.77 1.76 Co = 10 µF 0.84 VI = 3.6 V 0.83 VI = 5 V 0.82 0.81 0.80 VI = 2.4 V 0.79 VI = 3.3 V 3.32 3.30 3.28 3.26 3.24 0.78 3.22 1.
PAGE 8
SLVS391B − OCTOBER 2001 − REVISED FEBRUARY 2002 TYPICAL CHARACTERISTICS VO − OUTPUT VOLTAGE (RIPPLE) − V OUTPUT VOLTAGE (RIPPLE) vs TIME VI = 3.3 V VO = 1.5 V IO = 100 mA TA = 25°C Co = 10 µF, Co = 10 µF, IO = 50 mA VO = 1.5 V TA = 25°C VO LOAD TRANSIENT RESPONSE Co = 10 µF, VI = 3.3 V VO = 1.5 V TA = 25°C 50 mV/division 50 mV/division VO 10 mV/division VI = 2.5 V to 3.5 V to 2.
PAGE 9
SLVS391B − OCTOBER 2001 − REVISED FEBRUARY 2002 PRINCIPLES OF OPERATION The TPS6050x charge pumps provide a regulated output voltage in the range of 0.8 V to 3.3 V from an input voltage of 1.8 V to 6.5 V. The devices use switched capacitor fractional conversion to achieve high efficiency over the entire input and output voltage range.
PAGE 10
SLVS391B − OCTOBER 2001 − REVISED FEBRUARY 2002 PRINCIPLES OF OPERATION The TPS6050x devices use fractional conversion to achieve high efficiency over a wide input and output voltage range. Depending on the input to output voltage ratio and output current, internal circuitry switches between an LDO mode, a 2/3x mode, a 0.5x mode, and a 1/3x mode. LDO conversion mode In the LDO mode, the flying capacitors are no longer used for transferring energy.
PAGE 11
SLVS391B − OCTOBER 2001 − REVISED FEBRUARY 2002 PRINCIPLES OF OPERATION 0.5x conversion mode This conversion mode is internally selected if the input to output voltage ratio is greater than two (e.g. 3.6 V to 1.5 V conversion). In the 0.5x mode, the flying capacitors and the switches always work in parallel, which reduces the resistance of the circuit compared to the other modes. In the first cycle, the flying capacitors are charged in series with the output capacitors.
PAGE 12
SLVS391B − OCTOBER 2001 − REVISED FEBRUARY 2002 DESIGN PROCEDURE capacitor selection Designed specifically for space-critical battery-powered applications, the complete converter requires only four external capacitors. The capacitor values are closely linked to the required output current, output noise, and ripple requirements. The input capacitor improves system efficiency by reducing the input impedance, and it also stabilizes the input current.
PAGE 13
SLVS391B − OCTOBER 2001 − REVISED FEBRUARY 2002 APPLICATION INFORMATION C1F 1 µF 8 C1F 1 µF C2F 1 µF 6 3 8 4 OUT 5 1 R GND 9 PG Cc 10 pF O + (R1 ) R2) R2 5 FB VFB VFB = 0.8 V V V O 1.5 V 10 R EN GND 9 ǒ Ǔ +C o 10 µF VIN OFF/ON 2 max 150 mA 7 TPS60503 1 R2 R1 + R2 V OUT Ci 2.2 µF R1 10 EN OFF/ON INPUT 2.5 V to 6.5 V VO + Co 10 µF TPS60500 FB 4 max 150 mA 7 VIN Ci 2.
PAGE 14
SLVS391B − OCTOBER 2001 − REVISED FEBRUARY 2002 APPLICATION INFORMATION DSP supply with sequencing This application shows a power supply for a typical DSP. DSPs usually have core voltages in the 1-V to 2.5-V range, whereas the voltage at the I/O-pins (I/O voltage) is typically 3.3 V to interface with external logic and converters. Therefore, a power supply with two output voltages is required. The application works with an input voltage in the range of 3.5 V to 6.5 V.
PAGE 15
SLVS391B − OCTOBER 2001 − REVISED FEBRUARY 2002 APPLICATION INFORMATION LC-post filter If the output voltage ripple of the stepdown charge pump is to high, an LC post filter can be used. C1F 1 µF 8 C2F 1 µF 6 3 4 C1F− C1F+ C2F− C2F+ INPUT 2.5 V to 6.5 V OUT 5 + C o 10 µF VIN Ci 2.2 µF TPS60503 FB 1 L(P) max 150 mA 7 VP(out) C(P) 10 R EN OFF/ON PG 2 GND 9 Figure 28. LC-Post Filter Table 3.
PAGE 16
SLVS391B − OCTOBER 2001 − REVISED FEBRUARY 2002 APPLICATION INFORMATION power supply with dynamic voltage scaling (continued) General requirements for the application: D D D D 1.5 V ±0.08 V 1.1 V +0.1 V –0.05 V 3 V to 3.3 V 150 mA (10R load) Output voltage1 (DSP core): Output voltage 2 (DSP core): Input voltage: Output current: C1F 1 µF C2F 1 µF 8 6 3 4 C1F− C1F+ C2F− C2F+ Input 3.3 V OUT 5 Co 10 µF VIN Ci 2.
PAGE 17
SLVS391B − OCTOBER 2001 − REVISED FEBRUARY 2002 APPLICATION INFORMATION internet audio power supply The input voltage from a single or dual NiCd, NiMH or alkaline cell is boosted to 3.3 V. This voltage is used as system supply for the application and as an input voltage for the step-down charge pump which is used to provide the core voltage for a DSP.
PAGE 18
SLVS391B − OCTOBER 2001 − REVISED FEBRUARY 2002 APPLICATION INFORMATION layout and board space C1F C2F All capacitors should be soldered as close as possible to the IC. A PCB layout proposal for a two-layer board is shown in Figure 31. Care has been taken to connect all capacitors as close as possible to the circuit to achieve optimized output voltage ripple performance. Figure 31. Recommended PCB Layout for TPS6050x (top layer) Figure 32.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 18-Oct-2013 (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined.
PAGE 21
PACKAGE MATERIALS INFORMATION www.ti.com 19-Nov-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) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant TPS60500DGSR VSSOP DGS 10 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 TPS60501DGSR VSSOP DGS 10 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 TPS60502DGSR VSSOP DGS 10 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 19-Nov-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS60500DGSR VSSOP DGS 10 2500 340.5 338.1 20.6 TPS60501DGSR VSSOP DGS 10 2500 340.5 338.1 20.6 TPS60502DGSR VSSOP DGS 10 2500 340.5 338.1 20.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.