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TPS611781RNWT

Synchronous Boost Converter with Load Disconnect

The TPS611781RNWT is a synchronous boost converter with load disconnect from Texas Instruments. View the full TPS611781RNWT datasheet below including key specifications, electrical characteristics, absolute maximum ratings.

TPS611781RNWT shares its datasheet with TPS61178, whose page lists every part number it covers.

Official TPS611781RNWT datasheet (PDF) — the source this page was extracted from.

Manufacturer

Texas Instruments

Category

Integrated Circuits

Package

VQFN-HR-13 3.0x3.5mm

TPS611781RNWT Key Specifications

ParameterValue
Light-Load ModeForced PWM
Peak Efficiencyup to 96% (VIN=7.2V, VOUT=16V, IOUT=2A)
Package Body Size3.0 mm x 3.5 mm
Reference Voltage1.198V typ
Input Voltage Range2.7V to 20V
Switching Frequencyup to 2.2 MHz (adjustable)
Output OVP Threshold21V typ
Output Voltage Range4.5V to 20V
External Clock Sync Range200 kHz to 2.2 MHz
Switch Peak Current Limitup to 10A (programmable)
Operating Junction Temperature-40°C to 125°C
High-Side/Low-Side MOSFET RDS(On)16 mΩ typ (25 mΩ max)
Switch Current Limit (RLIMIT=80.6kΩ)7.4A typ (5.7A to 8.7A)

TPS611781RNWT Overview

Part: TPS61178 / TPS611781 — Texas Instruments

Type: Synchronous Boost Converter with Load Disconnect Gate Driver

Description: 2.7–20 V input, 4.5–20 V output synchronous boost converter with two integrated 16 mΩ FETs, programmable peak switch current up to 10 A, and efficiency up to 96% (VIN = 7.2 V, VOUT = 16 V, IOUT = 2 A).

Operating Conditions:

  • Supply voltage (VIN): 2.7–20 V
  • Output voltage: 4.5–20 V
  • Operating junction temperature: -40 to 125 °C
  • Switching frequency: adjustable up to 2.2 MHz; external sync 200 kHz to 2.2 MHz

Absolute Maximum Ratings:

  • VIN, SW, VOUT, DISCRG, EN: -0.3 to 23 V
  • VCC, FB, COMP, FREQ/SYNC, ILIMIT: -0.3 to 7 V
  • BST: -0.3 to SW + 7 V
  • Operating junction temperature: -40 to 150 °C
  • Storage temperature: -65 to 150 °C

Key Specs:

  • High-side and low-side MOSFET RDS(on): 16 mΩ typ, 25 mΩ max (VCC = 6 V)
  • Switch current limit (RLIMIT = 80.6 kΩ): TPS61178 6.4/8/9.4 A (min/typ/max); TPS611781 5.7/7.4/8.7 A
  • Reference voltage at FB (PWM mode): 1.180/1.198/1.210 V
  • VIN UVLO: 2.6 V typ rising (2.7 V max), 2.2 V typ falling (2.3 V max)
  • Quiescent current into VIN (TPS61178, VIN = 6 V, VOUT = 20 V, TJ up to 85 °C): 1.5 μA typ, 3 μA max
  • Shutdown current into VIN: 1 μA typ, 3.5 μA max (VIN = 6 V, -40 °C ≤ TJ ≤ 85 °C)
  • Switching frequency: 500 kHz typ at RFREQ = 342 kΩ; 200 kHz at 842 kΩ; 2200 kHz at 75 kΩ
  • Output OVP threshold: 20.5/21/21.5 V; thermal shutdown 150 °C rising, 130 °C falling

Features:

  • Programmable switch peak current up to 10 A
  • Gate driver for external load disconnect FET
  • Hiccup short-circuit protection
  • Output over-voltage and thermal protection
  • Auto PFM at light load (TPS61178) or forced PWM (TPS611781)
  • External clock synchronization from 200 kHz to 2.2 MHz
  • Peak current mode control with integrated slope compensation

Applications:

  • Portable speaker
  • Source driver of LCD display
  • Supply for power amplifier
  • Supply for motor driver
  • USB Type-C Power Delivery

Package:

  • VQFN-13 (RNW), 3.0 mm × 3.5 mm

TPS611781RNWT Features

  • 1 · Input Voltage Range: 2.7 V to 20 V
  • Output Voltage Range: 4.5 V to 20 V
  • Programmable Switch Peak Current: up to 10 A
  • Two 16-m Ω FETs Integrated
  • Efficiency up to 96%: VIN = 7.2 V, VOUT = 16 V, IOUT = 2 A
  • Adjustable Switching Frequency: up to 2.2 MHz
  • External Clock Synchronization: 200 kHz to 2.2 MHz
  • Gate Driver for Load Disconnect
  • Hiccup Short Protection
  • Over Voltage Protection
  • Auto PFM Operation - TPS61178
  • Forced PWM Mode - TPS611781
  • 3.0-mm x 3.5-mm 13-pin VQFN Hotrod Package
  • Create a Custom Design Using the TPS61178 With the WEBENCH ® Power Designer

TPS611781RNWT Applications

  • Portable Speaker
  • Source Driver of LCD Display
  • Supply for the Power Amplifier
  • Supply for the Motor Driver
  • USB Type-C Power Delivery

TPS611781RNWT Pin Configuration

TPS611781RNWT Electrical Characteristics

over operating free-air temperature range, VIN = 2.7 V to 14 V and VOUT = 16 V, VCC = 6 V, RLIMIT = 80.6 k Ω . Typical values are at T J = 25°C, (unless otherwise noted)

MINTYPMAXUNIT
POWER SUPPLYPOWER SUPPLYPOWER SUPPLYPOWER SUPPLYPOWER SUPPLYPOWER SUPPLYPOWER SUPPLY
V INInput voltage range2.720V
Input voltage under voltage lockoutV IN rising2.62.7V
V IN_UVLO(UVLO) thresholdV IN falling2.22.3
V IN_HYSVIN UVLO hysteresis400mV
V CCVCC regulation voltageICC = 5mA, VIN = 8V6V
V CC_UVLOVCC UVLO thresholdVCC falling2.1V
I Q (TPS61178)Quiescent current into V IN pinIC enabled, no load, no ext. FET V IN = 6 V, V OUT = 20 V, V FB = 1.3 V, T J up to 85 ⁰ C1.53μA
I Q (TPS61178)Quiescent current into V IN pinIC enabled, no load, no ext. FET V IN = 20 V, V OUT = 20 V, V FB = 1.3 V,T J up to 85 ⁰ C270320μA
Quiescent current into V OUT pinIC enabled, no load, no ext. FET V IN = 6 V, V FB = 1.3 V, V OUT = 20 V, T J up to 85 ⁰ C250300μA
Quiescent current into V OUT pinIC enabled, no load, no ext. FET V IN = 20 V, V OUT = 20 V, V FB = 1.3 V, T J up to 85 ⁰ C512μA
IC disabled, V IN = 6 V, -40 °C ≤ T J ≤ 85°C13.5μA
I SDShutdown current into V IN pinIC disabled, VIN = 20 V, -40 °C ≤ T J ≤ 85°C36μA
I LS_LKGReverse leakage current into SWIC disabled, VIN = V OUT = SW = 20 V -40 °C ≤ T ≤ 85°C0.16.5μA
J OUTPUT VOLTAGEJ OUTPUT VOLTAGEJ OUTPUT VOLTAGEJ OUTPUT VOLTAGEJ OUTPUT VOLTAGEJ OUTPUT VOLTAGEJ OUTPUT VOLTAGE
V OUTOutput voltage rangeFreq = 500kHz4.520V
V OVPOutput over-voltage protection thresholdV IN = 8 V, V OUT rising20.52121.5V
POWER SWITCHESPOWER SWITCHESPOWER SWITCHESPOWER SWITCHESPOWER SWITCHESPOWER SWITCHESPOWER SWITCHES
R DS(on)High-side MOSFET on resistanceV CC = 6 V1625m Ω
Low-side MOSFET on resistanceV CC = 6 V1625m Ω
GmPower stage trans-conductance (peak current ratio with comp voltage)V CC = 6 V12A/V
CURRENT LIMITCURRENT LIMITCURRENT LIMITCURRENT LIMITCURRENT LIMITCURRENT LIMITCURRENT LIMIT
I LIM_SWTPS61178R LIMIT = 80.6 k Ω6.489.4A
I LIM_SWTPS611781R LIMIT = 80.6 k Ω5.77.48.7A
I LIM_SHORTTPS61178 short current limit20A
VOLTAGE REFERNCEVOLTAGE REFERNCEVOLTAGE REFERNCEVOLTAGE REFERNCEVOLTAGE REFERNCEVOLTAGE REFERNCEVOLTAGE REFERNCE
VPWM mode1.1801.1981.210V
REFReference Voltage at FB pinPFM mode101%V REF
I FB_LKGLeakage current into FB pin1060nA
EN / SYNC LOGICEN / SYNC LOGICEN / SYNC LOGICEN / SYNC LOGICEN / SYNC LOGICEN / SYNC LOGICEN / SYNC LOGIC
V EN_HEN Logic high threshold1.2V
V EN_LEN Logic Low threshold0.4V

TPS611781RNWT Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted) (1)

MINMAXUNIT
Voltage range at terminals (2)BST-0.3SW + 7V
Voltage range at terminals (2)VIN, SW, VOUT, DISCRG, EN-0.323V
VCC, FB, COMP, FREQ / SYNC, ILIMIT-0.37V
T JOperating junction temperature-40150°C
T stgStorage temperature-65150°C

TPS611781RNWT Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)

MINNOMMAXUNIT
V INInput voltage2.720V
V OUTOutputvoltage4.520V
LEffective inductance range0.473.3μH
R FBFeedback resistance (low side)200k Ω
T JOperating junction temperature-40125°C

TPS611781RNWT Thermal Information

THERMAL METRIC(1)TPS61178 RNR (QFN Package) 12 PINSUNIT
R θ JAJunction-to-ambient thermal resistance60.2°C/W
R θ JC(top)Junction-to-case (top) thermal resistance28.6°C/W
R θ JBJunction-to-board thermal resistance14.5°C/W
ψ JTJunction-to-top characterization parameter0.4°C/W
ψ JBJunction-to-board characterization parameter14.5°C/W
R θ JC(bot)Junction-to-case (bottom) thermal resistance0.9°C/W

TPS611781RNWT Typical Application

Variants on the same datasheet

These parts have exact links to the same datasheet. They are candidates to compare, not verified drop-in replacements; check package, pinout and electrical limits.

Part NumberManufacturerPackage
TPS61178Texas InstrumentsVQFN-13
TPS611781Texas InstrumentsVQFN-13
TPS611781RNWRTexas InstrumentsVQFN-HR-13
TPS611781RNWR.ATexas InstrumentsVQFN-HR-13
TPS611781RNWT.ATexas InstrumentsVQFN-HR-13 3.0x3.5mm
TPS61178RNWRTexas Instruments13-PowerVFQFN
TPS61178RNWR.ATexas InstrumentsVQFN-HR-13 3.0x3.5mm
TPS61178RNWTTexas InstrumentsVQFN-HR-13
TPS61178RNWT.ATexas InstrumentsVQFN-HR-13 3.0x3.5mm

Other Integrated Circuits

All Integrated Circuits datasheetsAll Texas Instruments datasheets (2,442)

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