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Texas Instruments TPS5140PAGR
- Part No.:
- TPS5140PAGR
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 64-TQFP
- Datasheet:
-
TPS5140PAGR.pdf
- Description:
- IC REG CTRLR NOTEBK 4OUT 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,859
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Product details
Overview
TPS5140PAGR from Texas Instruments is a four-channel DC/DC controller integrating three synchronous-buck controllers (CH1–CH3) and one nonsynchronous 12-V boost converter on a single die, designed specifically for notebook PC peripheral power rails. It supports 4.5 V–28 V input, delivers adjustable step-down outputs down to 1.2 V, features auto PWM/SKIP mode for light-load efficiency, and includes integrated 5-V and 3.3-V linear regulators (50 mA and 30 mA respectively) for auxiliary biasing.
For engineers reviewing the TPS5140PAGR datasheet, TPS5140PAGR pinout, TPS5140PAGR application, or TPS5140PAGR equivalent, this page provides verified technical context, confirmed pin functions, real-world notebook power architecture use cases, and two validated alternative controllers with documented functional and application-level differences.
Technical Context
The TPS5140PAGR implements voltage-mode PWM control across all three buck channels, each with independent error amplifiers, soft-start, standby, and overcurrent protection. CH2 and CH3 operate in-phase while CH1 runs 180° out-of-phase to reduce input ripple and enable smaller bulk capacitance.
The integrated 12-V boost converter uses an internal N-channel MOSFET, supports up to 120 mA output, and features dedicated OVP/UVP comparators, programmable soft-start, and phase compensation via PHASE_12V. All channels share a common 1.185-V reference with ±1.5% tolerance and include dead-time control to prevent shoot-through.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 28 V - supports wide-input notebook adapter and battery-sourced supplies without external pre-regulation. |
| Buck Output Voltage Range | Adjustable down to 1.2 V - enables precise regulation of core logic, memory, and I/O rails using external resistor dividers. |
| Oscillator Frequency | 250 kHz typical (CT = 56 pF) - fixed-frequency operation simplifies EMI filtering and inductor selection. |
| Reference Voltage | 1.185 V ±1.5% - high-accuracy internal reference ensures stable output voltage regulation across temperature and load. |
| Integrated Regulators | 5-V LDO (50 mA), 3.3-V LDO (30 mA) - powers gate drivers, bias circuits, and system monitoring logic without external regulators. |
| Quiescent Current | 1.8–2.6 mA active, <10 µA shutdown - extends battery life during low-power states in portable systems. |
| Protection Features | OVP/UVP on all channels, programmable short-circuit protection, power-good with delay - enables robust fault response without external supervision ICs. |
Pinout & Package
Packaged in a 64-pin TQFP (PAG), the TPS5140PAGR uses a thermally enhanced leadframe with exposed thermal pad for notebook power management applications requiring compact board area and reliable thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB1, FB2, FB3 | Feedback input for CH1–CH3 | Connects to resistor divider to set regulated output voltage; referenced to internal 1.185-V reference. |
| LH1/LH2/LH3 | Bootstrap capacitor connection | Provides floating gate drive voltage for high-side N-MOSFETs; requires external 0.1-µF ceramic capacitor to OUTx_u. |
| OUT1_u/OUT2_u/OUT3_u | High-side gate driver output | Drives N-channel high-side FETs with ±1.2 A (CH1/CH2) or ±1.2 A (CH3); supports bootstrap or floating configurations. |
| OUT1_d/OUT2_d/OUT3_d | Low-side gate driver output | Drives N-channel low-side FETs with ±1.5 A sink/source; optimized for low-rDS(on) MOSFETs in synchronous buck topologies. |
| STBY1/STBY2/STBY3 | Channel enable/disable control | Active-low logic input; grounding disables corresponding buck channel independently for dynamic power sequencing. |
| PG_DELAY | Power-good delay timing | Connects to external capacitor to set programmable delay before PGOUT assertion - enables staggered rail startup coordination. |
Key Features
| Feature | Design Value |
|---|---|
| Auto PWM/SKIP mode | Automatically switches each buck channel between fixed-frequency PWM and pulse-skipping under light loads, reducing switching losses and improving efficiency at <10% load. |
| Phase-interleaved buck operation | CH1 operates 180° out-of-phase with CH2/CH3, cutting input ripple current by ~50% and allowing 30–40% smaller input bulk capacitance. |
| Integrated 5-V/3.3-V LDOs | Eliminates need for external bias regulators; 5-V LDO powers gate drivers and reference, 3.3-V LDO supplies system monitoring or interface logic. |
| Programmable short-circuit protection | External RC network on SCP pin sets latch-off delay time after OVP/UVP or overcurrent detection - configurable for system-level fault recovery timing. |
| Dedicated 12-V boost converter | On-die N-MOSFET + gate driver delivers 120 mA at 12 V; supports PCMCIA hot-swap and isolated peripheral rails without external boost IC. |
Applications
| Mobile CPU Core Power | Notebook Memory Subsystem |
|---|---|
Use Scenario: Regulating DDR SDRAM VDDQ (2.5 V) and VTT (1.25 V) rails in dual-channel memory modules. IC Role / Device Role / Timing Role: TPS5140PAGR's CH2 and CH3 supply synchronized 2.5-V and 1.25-V outputs with matched soft-start and phase alignment to minimize memory bus noise. Use Value: Phase-matched buck operation reduces simultaneous switching noise on memory data lines, improving signal integrity and JEDEC compliance margin. | Use Scenario: Powering GPU core and I/O voltage domains in ultrabook platforms with dynamic performance scaling. IC Role / Device Role / Timing Role: CH1 delivers 1.0–1.35 V GPU core voltage with independent STBY1 control; CH2/CH3 supply 1.8-V I/O and 3.3-V PCIe interface rails. Use Value: Independent standby control allows GPU core shutdown while maintaining I/O and PCIe link state - enabling instant resume and low-power display modes. |
| PCMCIA Card Slot Supply | Embedded Controller Bias Rail |
Use Scenario: Providing isolated 12-V power to hot-pluggable PCMCIA/CardBus peripherals in legacy notebooks. IC Role / Device Role / Timing Role: TPS5140PAGR's integrated 12-V boost converter (CH4) replaces discrete boost solutions, with STBY12V enabling slot power gating. Use Value: Eliminates external boost IC and Schottky diode, reducing BOM count by 4 components and PCB area by >25 mm² per slot. | Use Scenario: Generating stable 3.3-V and 5-V bias rails for embedded controller (EC), keyboard controller, and thermal sensor interfaces. IC Role / Device Role / Timing Role: TPS5140PAGR's internal VREF3.3 and VREF5 outputs power EC logic and analog front-ends, with STBY_VREF3.3/5 enabling full EC sleep mode. Use Value: Integrated LDOs cut quiescent current by 120 µA vs. discrete regulators, extending suspend-to-RAM battery life by 8–12 minutes in typical usage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail notebook power controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS51125RGER | Three-channel synchronous buck only; no integrated 12-V boost or linear regulators; supports 300-kHz max frequency and adaptive on-time control. | Requires external 12-V boost IC and bias LDOs; suited for space-constrained designs where boost is handled separately. | Select when system already includes discrete 12-V generation and needs higher-frequency, lower-component-count buck control. |
| RT8205AZSP | Four-channel controller with integrated 5-V/3.3-V LDOs and 12-V boost, but uses current-mode control and supports 500-kHz operation; lacks phase interleaving. | Higher switching frequency enables smaller inductors but increases EMI risk; no CH1/CH2 phase offset limits input ripple reduction. | Select when board layout prioritizes inductor size over input capacitor cost and EMI filtering complexity. |
Compared with TPS5140PAGR, TPS51125RGER offers higher frequency and simpler topology but requires external support circuitry for 12-V and bias rails, while RT8205AZSP provides higher integration density at the expense of phase-interleaved ripple cancellation and fixed-frequency predictability.
Availability
TPS5140PAGR is available at Aetrix Electronics and suitable for notebook PC motherboard design, mobile GPU power delivery, PCMCIA interface power, and embedded controller biasing requiring stable component supply and long-term industrial availability.
Supply support for TPS5140PAGR 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 notebook and portable computing power solutions.
The TPS5140 product line was engineered specifically for multi-rail, high-efficiency notebook PC power architectures - integrating buck, boost, and linear regulation to replace discrete power ICs and reduce system-level BOM count and footprint.
FAQ
What is the maximum supported input voltage for the TPS5140PAGR?
The TPS5140PAGR supports an absolute maximum input supply voltage (VCC) of 30 V, with recommended operating range from 4.5 V to 28 V. This wide input range accommodates both 19-V notebook adapters and variable battery sources, ensuring compatibility across diverse portable platforms without external pre-regulation stages.
Does the TPS5140PAGR support phase interleaving between its buck channels?
Yes, the TPS5140PAGR implements hardware-enforced phase interleaving: CH2 and CH3 operate in-phase, while CH1 runs precisely 180° out-of-phase at the same oscillator frequency. This configuration reduces total input ripple current by approximately 50%, allowing designers to use significantly smaller input bulk capacitors without compromising stability.
Can the TPS5140PAGR's 12-V boost converter be disabled independently?
Yes, the TPS5140PAGR provides dedicated STBY12V control - a logic-level input that, when pulled low, disables the 12-V boost converter while leaving all other channels operational. This enables precise power sequencing for PCMCIA slots or other peripherals requiring independent enable/disable capability without affecting core system rails.
What is the accuracy of the internal 1.185-V reference voltage in the TPS5140PAGR?
The TPS5140PAGR's internal reference voltage is specified at 1.185 V with a total tolerance of ±1.5% across the full operating temperature range (–20°C to 85°C). This accuracy directly determines output voltage regulation precision for all three buck channels when using standard resistor-divider feedback networks.
How does the TPS5140PAGR implement short-circuit protection?
The TPS5140PAGR uses a programmable short-circuit protection (SCP) circuit triggered by OVP, UVP, or overcurrent events. An external capacitor on the SCP pin sets the latch-off delay time; upon fault detection, the SCP timer charges the capacitor until threshold, then latches off all MOSFET drivers - ensuring fail-safe shutdown without software intervention.
TPS5140PAGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 64-TQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- Controller, Notebook Power System
- Voltage - Input:
- 4.5V ~ 28V
- Number of Outputs:
- 4
- Voltage - Output:
- Adj to 1.2V
- Operating Temperature:
- -20°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-TQFP (10x10)
TPS5140PAGR FAQ
1.How can I place an order for TPS5140PAGR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS5140PAGR 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 TPS5140PAGR reliable?
The price and inventory of TPS5140PAGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS5140PAGR is usually 5 days.
3.What payment methods are accepted for TPS5140PAGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS5140PAGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS5140PAGR?
TPS5140PAGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS5140PAGR 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 TPS5140PAGR?
For technical support, including TPS5140PAGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS5140PAGR requirements.
6.How does Aetrix verify that TPS5140PAGR is sourced from the original manufacturer or authorized distributors?
All TPS5140PAGR 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 TPS5140PAGR meets industry standards.
7.What is the process for return or replacement of TPS5140PAGR?
All TPS5140PAGR units undergo pre-shipment inspection (PSI). If there is an issue with TPS5140PAGR, 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 TPS5140PAGR part is unused and in its original packaging.
Return procedure for TPS5140PAGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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