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Texas Instruments TPS61178RNWT
- Part No.:
- TPS61178RNWT
- Manufacturer:
- Texas Instruments
- Package:
- 13-PowerVFQFN
- Datasheet:
-
TPS61178RNWT.pdf
- Description:
- IC REG BOOST ADJ 10A 13VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:552
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Product details
Overview
TPS61178RNWT from Texas Instruments is a 20-V, 10-A fully-integrated synchronous boost converter with integrated 16-mΩ high- and low-side FETs, programmable peak current limit (up to 10 A), adjustable switching frequency up to 2.2 MHz, and dedicated gate driver for external load disconnect FET. It delivers stable 4.5–20 V output from 2.7–20 V input and is used in USB Type-C Power Delivery and portable speaker power stages.
For engineers reviewing the TPS61178RNWT datasheet, TPS61178RNWT pinout, TPS61178RNWT application, or TPS61178RNWT equivalent, key selection considerations include its auto PFM light-load operation, hiccup short protection, integrated dual-FET architecture, 3.0-mm × 3.5-mm VQFN HotRod package with 13 pins, and support for external clock synchronization from 200 kHz to 2.2 MHz.
Technical Context
The TPS61178RNWT employs fixed-frequency peak current mode control with integrated slope compensation to ensure stability at duty cycles >50%, enabling excellent line and load transient response with minimal output capacitance. Its cycle-by-cycle current limiting and hiccup-mode short protection (20-A threshold, 90-ms off time) provide robust fault handling without external circuitry.
It integrates two 16-mΩ power FETs, a bootstrap regulator (BST/SW), internal error amplifier (195 µS transconductance), and precision 1.198-V reference (±10 mV over temperature). The DISDRV pin delivers 55-µA sink current to drive an external P-FET for true input-output isolation during shutdown or fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 20 V - supports single-cell Li-ion up to 4S battery stacks and wide industrial input rails. |
| Output Voltage Range | 4.5 V to 20 V - programmable via FB resistor divider; enables direct supply for Class-D amplifiers and display source drivers. |
| Switch Peak Current Limit | Up to 10 A - set by ILIMIT-to-AGND resistor; provides scalable overcurrent protection without external sense resistors. |
| Switching Frequency | 400 kHz to 2.2 MHz - adjustable via FREQ/SYNC resistor or external clock; allows EMI optimization and compact magnetics. |
| Efficiency | Up to 96% - measured at VIN = 7.2 V, VOUT = 16 V, IOUT = 2 A; reduces thermal load in space-constrained portable designs. |
| Package | 3.0-mm × 3.5-mm 13-pin VQFN HotRod - enhanced thermal dissipation (RθJA = 60.2°C/W) and low-inductance power routing. |
| Protection Features | Hiccup short protection (20-A trigger), OVP (21-V threshold), thermal shutdown (150°C), and UVLO (2.7-V enable / 2.3-V disable). |
Pinout & Package
TPS61178RNWT is housed in a 3.0-mm × 3.5-mm, 13-pin VQFN HotRod package with exposed thermal pad (PGND-connected) for optimal power dissipation. Pin 1 is marked by a dot; top-side silkscreen identifies pin 1 location.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FREQ / SYNC | Frequency programming / sync input | Resistor sets oscillator frequency (400 kHz–2.2 MHz); accepts external clock (200 kHz–2.2 MHz); must not float. |
| AGND | Analog ground reference | Low-noise return for FB, COMP, ILIMIT, and FREQ/SYNC; requires single-point connection to PGND on PCB. |
| ILIMIT | Peak current limit programming | Resistor to AGND sets switch current limit (e.g., 80.6 kΩ → 8 A); enables precise overload protection tuning. |
| COMP | Error amplifier output | Connects loop compensation network (RC + C) to AGND; determines stability and transient response of voltage regulation. |
| FB | Output voltage feedback | Senses regulated VOUT via resistor divider; internal 1.198-V reference sets output: VOUT = 1.198 × (1 + RUP/RDOWN). |
| PGND | Power ground return | High-current return path for SW, VOUT, and BST; connects to thermal pad for thermal management. |
| SW | Switching node | Drain of low-side FET / source of high-side FET; carries full inductor ripple current; requires tight layout to minimize EMI. |
| VOUT | Boost output power rail | Delivers regulated output (4.5–20 V); connects to output capacitor bank and load; isolated via external P-FET when DISDRV active. |
| DISDRV | Load disconnect gate driver | Drives gate of external P-FET; 55-µA sink current enables controlled turn-off for true input-output isolation during shutdown/fault. |
| VCC | Internal LDO output | 6-V regulated supply for internal circuitry; requires ≥1.0-µF ceramic capacitor to PGND for stability and noise rejection. |
| EN | Enable logic input | Active-high (≥1.2 V) enables operation; ≤0.4 V disables converter and places DISDRV in high-impedance state. |
| VIN | Main power input | Supplies IC core and FETs; accepts 2.7–20 V; includes UVLO (2.7 V rising / 2.3 V falling) with 400-mV hysteresis. |
| BST | Bootstrap supply for high-side FET | Requires 0.1-µF+ ceramic capacitor to SW; generates gate drive voltage for internal high-side MOSFET. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual-FET power stage | 16-mΩ high-side + 16-mΩ low-side MOSFETs eliminate external switches and reduce BOM count and layout area. |
| Auto PFM light-load operation | Disables switching below threshold load to achieve ultra-low quiescent current (1.5 µA typical at 6-V input), extending battery life. |
| Dedicated load disconnect driver | DISDRV pin provides controlled gate drive for external P-FET, enabling true output isolation during shutdown or short-circuit events. |
| Hiccup-mode short protection | Enters 90-ms off-time recovery cycle upon 20-A current or 30% VOUT drop, limiting thermal stress and enabling automatic recovery. |
| Adjustable frequency with sync capability | Resistor-programmable 400 kHz–2.2 MHz or external clock sync (200 kHz–2.2 MHz) for EMI compliance and system-level timing alignment. |
| Precision voltage reference | 1.198-V ±10 mV internal reference (FB pin) ensures accurate output regulation across temperature and line/load conditions. |
Applications
| Portable Speaker Power Supply | USB Type-C Power Delivery Sink |
|---|---|
|
Use Scenario: Powers Class-D audio amplifier in battery-powered Bluetooth speakers requiring 12–16 V rail from 3.6–8.4 V Li-ion input. IC Role / Device Role / Timing Role: Synchronous boost converter providing regulated, high-current output with fast transient response to dynamic audio loads. Use Value: 96% efficiency at 2-A load minimizes heat buildup; auto PFM extends playback time; hiccup protection prevents damage during speaker coil shorts. |
Use Scenario: Generates 9/15/20 V PD profiles from 5-V USB-C source in portable monitors or docking stations. IC Role / Device Role / Timing Role: Programmable boost stage delivering precise, stable output voltage per USB PD contract negotiation. Use Value: Adjustable VOUT (4.5–20 V) and frequency (400 kHz–2.2 MHz) allow compliance with PD voltage steps and EMI limits. |
| LCD Display Source Driver Supply | Motor Driver High-Side Rail Generator |
|
Use Scenario: Supplies 12–18 V bias for TFT-LCD gate/source drivers in automotive infotainment or industrial HMIs. IC Role / Device Role / Timing Role: High-efficiency DC-DC converter delivering clean, well-regulated voltage with low output ripple. Use Value: Integrated 16-mΩ FETs and 2.2-MHz max frequency enable compact design with small inductors (<1 µH) and low-profile capacitors. |
Use Scenario: Generates 12–20 V high-side gate drive rail for N-channel H-bridge motor drivers in cordless power tools. IC Role / Device Role / Timing Role: Boost converter powering gate driver ICs or discrete level-shift circuits for high-side FET control. Use Value: 10-A peak current capability supports fast gate charging of large MOSFETs; DISDRV enables safe motor coasting via output disconnection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS611781RNWT | Forced PWM mode at light load (vs. TPS61178RNWT's auto PFM); 0.8-A lower current limit for same ILIMIT resistor; identical pinout and package. | Better suited for noise-sensitive systems (e.g., audio ADCs) where PFM switching artifacts must be avoided. | Select TPS611781RNWT when consistent switching frequency across full load range is required; otherwise TPS61178RNWT offers superior light-load efficiency. |
| LM5122MH/NOPB | External MOSFET controller (not integrated FETs); wider input (3–75 V); higher max output (65 V); no integrated DISDRV or PFM mode. | Used in higher-voltage industrial or automotive applications where 20-V output ceiling or integrated FETs are insufficient. | Choose LM5122MH/NOPB only when >20-V output, >20-V input, or external FET flexibility outweighs TPS61178RNWT's integration and compactness. |
Compared with TPS611781RNWT, the TPS61178RNWT trades forced PWM consistency for higher light-load efficiency via auto PFM; compared with LM5122MH/NOPB, it sacrifices input/output voltage range and external FET control for full integration, smaller footprint, and built-in load disconnect capability.
Availability
TPS61178RNWT is available at Aetrix Electronics and suitable for USB Type-C Power Delivery, portable speaker power supplies, and LCD display source driver applications requiring stable component supply, high-reliability packaging, and long-term production continuity.
Supply support for TPS61178RNWT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-efficiency DC-DC conversion and automotive-grade reliability.
The TPS61178RNWT belongs to TI's high-current synchronous boost converter product line, designed specifically for portable and USB-PD applications demanding compact size, high efficiency across load range, and robust fault protection without external components.
FAQ
What is the maximum output current capability of the TPS61178RNWT?
The TPS61178RNWT supports a programmable switch peak current limit up to 10 A, set by an external resistor on the ILIMIT pin. Its actual continuous output current depends on input/output voltage, inductor selection, and thermal design-but with proper layout and cooling, it reliably delivers ≥5 A at 12-V output from 5-V input. The TPS61178RNWT integrates two 16-mΩ FETs and uses peak current mode control to maintain regulation under dynamic loads.
Does the TPS61178RNWT support external clock synchronization?
Yes, the TPS61178RNWT supports external clock synchronization via the FREQ / SYNC pin, accepting input clocks from 200 kHz to 2.2 MHz. The pin detects logic thresholds (1.2 V high, 0.4 V low) and overrides the internal oscillator once synchronized. This feature enables EMI reduction through frequency dithering or alignment with system master clocks-critical in noise-sensitive applications like audio or imaging systems using the TPS61178RNWT.
How does the load disconnect function work on the TPS61178RNWT?
The TPS61178RNWT provides a dedicated DISDRV pin that sources/sinks gate drive current to control an external P-channel MOSFET placed between VOUT and the load. During shutdown or output short, DISDRV actively pulls the FET gate low to disconnect the load from the input, preventing backfeed and enabling true power sequencing. The TPS61178RNWT delivers 55 µA typical sink current, and external RGATE and CGATE components set turn-on/off timing per application requirements.
What protection features are integrated into the TPS61178RNWT?
The TPS61178RNWT integrates hiccup-mode short-circuit protection (triggered at ~20 A or 30% VOUT drop), overvoltage protection (21-V threshold), thermal shutdown (150°C junction), and input UVLO (2.7-V enable / 2.3-V disable with 400-mV hysteresis). These operate autonomously without external components-ensuring robust operation in portable and industrial environments where the TPS61178RNWT serves as primary power stage.
What is the recommended output capacitor for stable operation of the TPS61178RNWT?
Texas Instruments recommends ≥22 µF total ceramic output capacitance (X5R/X7R, 25-V rating) placed close to VOUT and PGND pins for stable regulation and low ripple. The TPS61178RNWT's current-mode control allows flexibility with capacitor ESR, but low-ESR ceramics minimize voltage deviation during load transients. Layout best practices-including short, wide traces and direct connection to the thermal pad-ensure optimal performance of the TPS61178RNWT in high-current boost applications.
TPS61178RNWT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 13-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 20V
- Voltage - Output (Min/Fixed):
- 4.5V
- Voltage - Output (Max):
- 20V
- Current - Output:
- 10A (Switch)
- Frequency - Switching:
- 200kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 13-VQFN-HR (3x3.5)
TPS61178RNWT FAQ
1.How can I place an order for TPS61178RNWT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61178RNWT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS61178RNWT reliable?
The price and inventory of TPS61178RNWT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61178RNWT is usually 5 days.
3.What payment methods are accepted for TPS61178RNWT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61178RNWT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61178RNWT?
TPS61178RNWT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61178RNWT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS61178RNWT?
For technical support, including TPS61178RNWT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61178RNWT requirements.
6.How does Aetrix verify that TPS61178RNWT is sourced from the original manufacturer or authorized distributors?
All TPS61178RNWT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS61178RNWT meets industry standards.
7.What is the process for return or replacement of TPS61178RNWT?
All TPS61178RNWT units undergo pre-shipment inspection (PSI). If there is an issue with TPS61178RNWT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS61178RNWT part is unused and in its original packaging.
Return procedure for TPS61178RNWT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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