Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - power management - special purpose 700 µA HTSSOP 24

Vin

V 1

p to 15 V / 400 mA

V 3

p to 30 V / 20 mA

V 2

p to 12 V / 20 mA

V 4

3.3

Boost

Converter

Positive Charge

Pump

Negative

Charge Pump

Power Good

Linear Regulator

Controller

TPS6514x

2.7 V to 5.8 V

TPS65140, TPS65141

TPS65145

www.ti.com

SLVS497E –SEPTEMBER 2003–REVISED NOVEMBER 2012

TRIPLE OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND POWER GOOD

Check for Samples: TPS65140, TPS65141, TPS65145

FEATURES

DESCRIPTION

• 2.7-V to 5.8-V Input Voltage Range

The TPS6514x series offers a compact and small

• 1.6-MHz Fixed Switching Frequency

power supply solution to provide all three voltages

• 3 Independent Adjustable Outputs

required by thin film transistor (TFT) LCD displays.

The auxiliary linear regulator controller can be used

• Main Output up to 15 V With <1% Typical

to generate a 3.3-V logic power rail for systems

Output Voltage Accuracy

• Virtual Synchronous Converter Technology

The main output V

1 is a 1.6-MHz fixed frequency

• Negative Regulated Charge Pump Driver V

PWM boost converter providing the source drive

• Positive Charge Pump Converter V

voltage for the LCD display. The device is available in

• Auxiliary 3.3-V Linear Regulator Controller

two versions with different internal switch current

limits to allow the use of a smaller external inductor

• Internal Soft Start

when lower output power is required. The

• Internal Power-On Sequencing

TPS65140/41 has a typical switch current limit of 2.3

• Fault Detection of all Outputs (TPS65140/45)

A and the TPS65145 has a typical switch current limit

of 1.37 A. A fully integrated adjustable charge pump

• No Fault Detection (TPS65141)

doubler/tripler provides the positive LCD gate drive

• Thermal Shutdown

voltage. An externally adjustable negative charge

• System Power Good

pump provides the negative gate drive voltage. Due

to the high 1.6-MHz switching frequency of the

• Available in TSSOP-24 and QFN-24

charge pumps, inexpensive and small 220-nF

PowerPAD™ Packages

capacitors can be used.

APPLICATIONS

Additionally, the TPS6514x series has a system

power good output to indicate when all supply rails

• TFT LCD Displays for Notebooks

are acceptable. For LCD panels powered by 5 V the

• TFT LCD Displays for Monitors

device has a linear regulator controller using an

• Portable DVD Players

external transistor to provide a regulated 3.3 V output

for the digital circuits. For maximum safety, the

• Tablet PCs

TPS65140/45 goes into shutdown as soon as one of

• Car Navigation Systems

the outputs is out of regulation. The device can be

• Industrial Displays

enabled again by toggling the input or the enable

(EN) pin to GND. The TPS65141 does not enter

shutdown when one of its outputs is below its power

good threshold.

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.

2PowerPAD 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 (32 pages)

PAGE 1
TPS65140, TPS65141 TPS65145 www.ti.com SLVS497E – SEPTEMBER 2003 – REVISED NOVEMBER 2012 TRIPLE OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND POWER GOOD Check for Samples: TPS65140, TPS65141, TPS65145 FEATURES 1 • • • • 2 • • • • • • • • • • • DESCRIPTION 2.7-V to 5.8-V Input Voltage Range 1.
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TPS65140, TPS65141 TPS65145 SLVS497E – SEPTEMBER 2003 – REVISED NOVEMBER 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. TYPICAL APPLICATION CIRCUIT VI 2.7 V to 5.8 V L1 4.2 µH C3 22 µF TPS65140 VIN C13 10 nF C1 VO2 Up to 12 V/20 mA C6 0.22 µF D2 C12 D3 R3 0.22 µF 0.
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TPS65140, TPS65141 TPS65145 www.ti.com SLVS497E – SEPTEMBER 2003 – REVISED NOVEMBER 2012 ABSOLUTE MAXIMUM RATINGS over operating free-air temperature range (unless otherwise noted) (1) UNIT Voltages on pin VIN (2) Voltages on pin VO1, SUP, PG -0.3 V to 6 V (2) -0.3 V to 15.5 V Voltages on pin EN, MODE, ENR (2) -0.3 V to VI + 0.
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TPS65140, TPS65141 TPS65145 SLVS497E – SEPTEMBER 2003 – REVISED NOVEMBER 2012 www.ti.com ELECTRICAL CHARACTERISTICS (continued) Vin = 3.3 V, EN = VIN, VO1 = 10 V, TA= -40°C to 85°C, typical values are at TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX VO1 Output voltage range 5 VO1-Vin Minimum input to output voltage difference 1 VREF Reference voltage 1.205 1.13 1.219 V VFB Feedback regulation voltage 1.136 1.146 1.
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TPS65140, TPS65141 TPS65145 www.ti.com SLVS497E – SEPTEMBER 2003 – REVISED NOVEMBER 2012 ELECTRICAL CHARACTERISTICS (continued) Vin = 3.3 V, EN = VIN, VO1 = 10 V, TA= -40°C to 85°C, typical values are at TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS Vd D1 – D4 Shottky diode forward voltage IO Maximum output current MIN ID1-D4 = 40 mA TYP MAX UNIT 610 720 mV 20 mA Line regulation 10 V ≤ VO1 ≤ 15 V, Iload = 10 mA, VO3 = 27 V 0.
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TPS65140, TPS65141 TPS65145 SLVS497E – SEPTEMBER 2003 – REVISED NOVEMBER 2012 www.ti.com Terminal Functions TERMINAL I/O DESCRIPTION NO. (PWP) NO. (RGE) VIN 4 7 I Input voltage pin of the device. EN 24 3 I Enable pin of the device. This pin should be terminated and not be left floating. A logic high enables the device and a logic low shuts down the device. COMP 22 1 PG 10 13 O Open drain output indicating when all outputs VO1, VO2, VO3 are within 10% of their nominal output voltage.
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TPS65140, TPS65141 TPS65145 www.ti.com SLVS497E – SEPTEMBER 2003 – REVISED NOVEMBER 2012 FUNCTIONAL BLOCK DIAGRAM VIN SW SW Q2 Main boost converter EN FB1 FB2 FB3 Bias Vref = 1.213 V Thermal Shutdown Start−Up Sequencing Undervoltage Detection Overvoltage Detection Short Circuit Protection D S Current Limit and Soft Start 1.6-MHz Oscillator SUP Control Logic Gate Drive Circuit D Q1 COMP S Comparator Sawtooth Generator FB1 VFB 1.
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TPS65140, TPS65141 TPS65145 SLVS497E – SEPTEMBER 2003 – REVISED NOVEMBER 2012 www.ti.
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TPS65140, TPS65141 TPS65145 www.ti.com SLVS497E – SEPTEMBER 2003 – REVISED NOVEMBER 2012 TYPICAL CHARACTERISTICS EFFICIENCY vs LOAD CURRENT 100 100 90 90 40 Efficiency - % Vo1 = 15 V Vo1 = 10 V 60 50 Vo1 = 15 V 40 30 Vo1 = 6 V 90 Vo1 = 10 V 85 Vo1 = 15 V 80 30 VI = 3.3 V Vo2, Vo3 = No Load, Switching 20 10 10 100 1k 1 100 70 2.5 1k 3 3.5 4 4.5 5 5.5 6 IL − Load Current − mA Figure 1. Figure 2. Figure 3.
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TPS65140, TPS65141 TPS65145 SLVS497E – SEPTEMBER 2003 – REVISED NOVEMBER 2012 www.ti.com TYPICAL CHARACTERISTICS (continued) POWER-UP SEQUENCING SOFT START VO1 VO2 MAXIMUM LOAD CURRENT 0.20 VI = 3.3 V VO = 10 V, IO = 300 mA Vo2 = −8 V 0.18 I O − Output Current − A Vo1 5 V/div Vo1 5 V/div Vo2 5 V/div Vo3 10 V/div II 500 mA/div VI = 3.3 V VO = 10 V, 0.14 TA = 85°C 0.12 0.10 TA = 25°C 0.08 0.06 0.04 0.02 0 8.8 500 µs/div 500 µs/div TA = −40°C 0.16 9.8 10.8 11.8 12.8 13.8 14.
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TPS65140, TPS65141 TPS65145 www.ti.com SLVS497E – SEPTEMBER 2003 – REVISED NOVEMBER 2012 Power-Good Output The TPS6514x sereis has an open-drain power-good output with a maximum sink capability of 1 mA. The powergood output goes high as soon as the main boost converter VO1 and the negative and the positive charge pumps are within regulation. The power-good output goes low as soon as one of the outputs is out of regulation. In this case, the device goes into shutdown at the same time.
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TPS65140, TPS65141 TPS65145 SLVS497E – SEPTEMBER 2003 – REVISED NOVEMBER 2012 www.ti.com circuit condition, the TPS65140/45 goes into shutdown. Because there is a direct pass from the input to the output through the diode, the short-circuit condition remains. If this condition needs to be avoided, a fuse at the input or an output disconnect using a single transistor and resistor is required.
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TPS65140, TPS65141 TPS65145 www.ti.com SLVS497E – SEPTEMBER 2003 – REVISED NOVEMBER 2012 APPLICATION INFORMATION BOOST CONVERTER DESIGN PROCEDURE The first step in the design procedure is to calculate the maximum possible output current of the main boost converter under certain input and output voltage conditions. Below is an example for a 3.3-V to 10-V conversion: Vin = 3.3 V, Vout = 10 V, Switch voltage drop Vsw = 0.5 V, Schottky diode forward voltage VD = 0.8 V 1.
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TPS65140, TPS65141 TPS65145 SLVS497E – SEPTEMBER 2003 – REVISED NOVEMBER 2012 www.ti.com Table 1. Inductor Selection DEVICE TPS65140 TPS65145 INDUCTOR VALUE COMPONENT SUPPLIER DIMENSIONS / mm ISAT/DCR 4.7 μH Coilcraft DO1813P-472HC 8,89 x 6,1 x 5 2.6 A/54 mΩ 4.2 μH Sumida CDRH5D28 4R2 5,7 x 5,7 x 3 2.2 A/23 mΩ 4.7 μH Sumida CDC5D23 4R7 6 x 6 x 2,5 1.6 A/48 mΩ 3.3 μH Wuerth Elektronik 744042003 4,8 x 4,8 x 2 1.8 A/65 mΩ 4.2 μH Sumida CDRH6D12 4R2 6,5 x 6, 5 x 1,5 1.8 A/60 mΩ 3.
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TPS65140, TPS65141 TPS65145 www.ti.com SLVS497E – SEPTEMBER 2003 – REVISED NOVEMBER 2012 Converter Loop Design and Stability The TPS6514x converter loop can be externally compensated and allows access to the internal transconductance error amplifier output at the COMP pin. A small feedforward capacitor across the upper feedback resistor divider speeds up the circuit as well.
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TPS65140, TPS65141 TPS65145 SLVS497E – SEPTEMBER 2003 – REVISED NOVEMBER 2012 www.ti.com Load Step Figure 16. Load Step Caused By A Too Large Feedforward Capacitor Value Compensation The regulator loop can be compensated by adjusting the external components connected to the COMP pin. The COMP pin is connected to the output of the internal transconductance error amplifier. A typical compensation scheme is shown in Figure 17. CC RC 15 kΩ VIN COMP 1 nF Figure 17.
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TPS65140, TPS65141 TPS65145 www.ti.com SLVS497E – SEPTEMBER 2003 – REVISED NOVEMBER 2012 CC = 1 nF Figure 19. CC = 1 nF Lastly, Rc needs to be selected. A good practice is to use a 50-kΩ potentiometer and adjust the potentiometer for the best load transient where no oscillations should occur. These tests have to be done at the highest Vin and highest load current because the converter stability is most critical under these conditions.
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TPS65140, TPS65141 TPS65145 SLVS497E – SEPTEMBER 2003 – REVISED NOVEMBER 2012 www.ti.com Figure 22. Optimum, RC Is Ideal Negative Charge Pump The negative charge pump provides a regulated output voltage by inverting the main output voltage, VO1. The negative charge pump output voltage is set with external feedback resistors.
PAGE 19
TPS65140, TPS65141 TPS65145 www.ti.com SLVS497E – SEPTEMBER 2003 – REVISED NOVEMBER 2012 Voltage doubler: VO3max = 2 x VO1 - (2 VD + 2 x IO x (2 x rDS(on)Q5 + rDS(on)Q3 + rDS(on)Q4 + XC1)) Voltage tripler: VO3max = 3 x VO - (3 x VD + 2 x IO x (3 x rDS(on)Q5 + rDS(on)Q3 + rDS(on)Q4 + XC1 + XC2)) The output voltage is set by the external resistor divider and is calculated as: ƫ ƪ1 ) R5 R6 V out + 1.214 R5 + R6 ƪ Vout V FB ƫ *1 + R6 ƪ ƫ V out *1 1.
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TPS65140, TPS65141 TPS65145 SLVS497E – SEPTEMBER 2003 – REVISED NOVEMBER 2012 www.ti.com TYPICAL APPLICATIONS L1 3.3uH Vin 3.3V C3 22uF C13 1n TPS65140 R7 15k VIN COMP GND EN ENR C1 0.22u C1+ C1− DRV D2 C12 0.22u Vo2 −5 V / 20 mA C6 0.22u Vo1 10V / 150 mA D1 R3 620k C4 22uF R2 56k C2 0.22u C2+ C2−/MODE OUT3 Vo3 up to 23V/20mA FB3 PG PGND PGND GND FB2 REF FB4 BASE D3 R1 430 C5 6.8pF SW SW FB1 SUP R5 1M R4 150k C7 0.22u R6 56k C11 220nF Vin R7 33k System Power Good Figure 23.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 Orderable Device Status (1) TPS65145RGERG4 ACTIVE Package Type Package Pins Package Drawing Qty VQFN RGE 24 3000 Eco Plan Lead/Ball Finish (2) Green (RoHS & no Sb/Br) MSL Peak Temp Op Temp (°C) Top-Side Markings (3) CU NIPDAU Level-2-260C-1 YEAR (4) -40 to 85 TPS 65145 (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device TPS65140PWPR Package Package Pins Type Drawing SPQ HTSSOP Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant PWP 24 2000 330.0 16.4 6.95 8.3 1.6 8.0 16.0 Q1 TPS65140RGER VQFN RGE 24 3000 330.0 12.4 4.25 4.25 1.15 8.0 12.0 Q2 TPS65141PWPR HTSSOP PWP 24 2000 330.0 16.4 6.95 8.3 1.6 8.0 16.
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PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS65140PWPR HTSSOP PWP 24 2000 367.0 367.0 38.0 TPS65140RGER VQFN RGE 24 3000 367.0 367.0 35.0 TPS65141PWPR HTSSOP PWP 24 2000 367.0 367.0 38.0 TPS65141RGER VQFN RGE 24 3000 367.0 367.0 35.0 TPS65145PWPR HTSSOP PWP 24 2000 367.0 367.0 38.0 TPS65145RGER VQFN RGE 24 3000 367.0 367.0 35.
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