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Texas Instruments TPS51462RGER
- Part No.:
- TPS51462RGER
- Manufacturer:
- Texas Instruments
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
TPS51462RGER.pdf
- Description:
- IC REG BUCK PROG 6A 24VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,668
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Product details
Overview
TPS51462RGER from Texas Instruments is a fully integrated synchronous step-down DC-DC converter with D-CAP+™ adaptive on-time control, 2-bit VID interface, and integrated high- and low-side FETs. It delivers up to 6 A output current, supports 3.3 V/5 V input, regulates output from 0.675 V to 0.9 V (Intel SA rail), and operates at selectable 700 kHz or 1 MHz switching frequency. It is designed for Intel system agent power delivery in notebook/desktop platforms.
For engineers reviewing the TPS51462RGER datasheet, TPS51462RGER pinout, TPS51462RGER application, or TPS51462RGER equivalent, key selection considerations include its non-droop voltage regulation architecture, VID-controlled dynamic voltage scaling, 10 µA SLEW pin current source for programmable startup/transition timing, and integrated protection features including OVP/UVP/thermal shutdown.
Technical Context
The TPS51462RGER implements D-CAP+™ mode control using a current-sense amplifier (ACSINT = 43–57 mV/A) and an error amplifier with 1 mS transconductance (GM), enabling fast transient response without external compensation in non-droop configuration. Its adaptive on-time generator adjusts tON based on VIN, VOUT, and ripple-derived feedback to maintain stable frequency under load and line variation.
It integrates dual 5-V supplies: V5DRV powers the high-side gate driver (RDSONBST = 5–10 Ω), while V5FILT powers analog circuitry with 4.3 V UVLO (440 mV hysteresis). The device supports VID-on-the-fly transitions via SLEW pin capacitor programming and enforces strict Intel SA timing-e.g., PGOOD startup delay of 3 ms excluding slew ramp time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.3 V to 6.5 V - supports standard 3.3 V and 5 V system rails with 0.1 V headroom margin. |
| Output Voltage Range | 0.675 V to 0.9 V - set by 2-bit VID (VID0/VID1) per Intel SA specification; no external resistor divider required. |
| Max Output Current | 6 A continuous - valley overcurrent limit (IOCL) ≥ 6.6 A ensures safe operation under peak transient loads. |
| Switching Frequency | 700 kHz or 1 MHz - selected via MODE pin resistor (22 kΩ / 33 kΩ / 100 kΩ / open), enabling trade-off between size and efficiency. |
| SLEW Pin Current Source | 10 µA ±10% - enables precise, frequency-independent soft-start and VID transition timing via external capacitor (e.g., 10 nF → 1 mV/µs slew rate). |
| PGOOD Accuracy | ±2% window (84–116% of VSLEW) - provides reliable power sequencing with 3 ms startup delay and 1 ms propagation latency. |
| Thermal Shutdown | 125°C with 10°C hysteresis - protects against sustained overload or poor PCB thermal design; restarts automatically after cooldown. |
Pinout & Package
TPS51462RGER is housed in a thermally enhanced 4 mm × 4 mm, 24-pin QFN package (RGE) with exposed thermal pad connected to GND. Pin count and layout match TI's UDG-11143 and UDG-11144 reference schematics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pins 3, 5, 22) | Power input | Drain connection of high-side FET; accepts 3.3 V/5 V input with 6.5 V max operating rating. |
| SW (Pins 7, 8, 9, 10, 11) | Switch node | Connection point for external inductor; carries high dv/dt switching waveform; shared among five pins for low-inductance routing. |
| PGND (Pins 20, 21, 23) | Power ground | Source terminal of low-side FET; must be tied to thermal pad and low-impedance ground plane to minimize noise and losses. |
| BST (Pin 12) | Bootstrap supply | Provides gate drive voltage for high-side FET; requires 0.1 µF ceramic capacitor to SW for charge replenishment. |
| VID0 / VID1 (Pins 14, 15) | Digital voltage ID inputs | Set output voltage per Intel SA table (e.g., VID=01 → 0.80 V); pulled low via 1 kΩ resistors per datasheet timing diagrams. |
| SLEW (Pin 4) | Voltage transition timing | 10 µA current source charges external capacitor to control startup/VID transition slew rate; critical for acoustic noise suppression. |
| COMP (Pin 3) | Loop compensation | Connects to VREF via RC network for type-II compensation in non-droop configuration; sets unity-gain bandwidth and phase margin. |
| PGOOD (Pin 16) | Open-drain status output | Asserts high when VOUT is within ±2% of target and all protections are clear; blanked during VID slewing to prevent false deassertion. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP+™ adaptive on-time control | Eliminates need for external loop compensation components in non-droop mode; achieves <10 µs transient response with 4×22 µF output capacitance. |
| Integrated 2-bit VID interface | Directly supports Intel System Agent voltage codes (0.675 V to 0.9 V); enables dynamic voltage scaling without MCU intervention. |
| Programmable SLEW timing | Single capacitor sets both soft-start and VID transition rates (e.g., 10 nF → 900 µs to ramp 0.9 V → 0.8 V), reducing inductor current perturbation and acoustic noise. |
| Non-droop output regulation | Flat load regulation (<±1.5% VOUT tolerance across 0–6 A) achieved via COMP–VREF RC network; eliminates DC droop dependency on ESR. |
| Comprehensive protection suite | Includes 125°C thermal shutdown with 10°C hysteresis, 120% OVP latch, 70% UVP latch, and ±6 A valley overcurrent limiting with pulse-by-pulse recovery. |
Applications
| Intel System Agent Power Rail | Notebook CPU Core Voltage Sequencing |
|---|---|
|
Use Scenario: Powers Intel processor System Agent (SA) domain requiring tight voltage accuracy, dynamic VID scaling, and precise power-good timing per platform specifications. IC Role / Device Role / Timing Role: Primary buck regulator delivering 0.675–0.9 V at up to 6 A; manages VID transitions synchronized to processor reset timing (≤900 ms). Use Value: Enables compliance with Intel 2011–2012 platform timing diagrams (e.g., Figure 6/7), including 3 ms PGOOD startup delay and VID slewing within processor reset window. |
Use Scenario: Supplies low-voltage core logic in thin-and-light notebooks where board space, thermal density, and BOM cost are constrained. IC Role / Device Role / Timing Role: Single-chip solution integrating FETs, drivers, and VID logic-replacing multi-component discrete buck designs. Use Value: Reduces solution footprint by >40% vs. controller + external FETs; eliminates gate driver layout sensitivity and bootstrap diode requirements. |
| Desktop Motherboard VRM Sub-Rail | Embedded Computing SA Supply |
|
Use Scenario: Generates stable SA voltage in ATX desktop motherboards supporting Intel 3rd/4th Gen Core processors. IC Role / Device Role / Timing Role: Secondary VRM stage downstream of main CPU VRM; interfaces with chipset SMBus or hardwired VID lines. Use Value: Delivers ±1.5% VOUT accuracy across –40°C to 85°C ambient; maintains regulation during 2 A step transients with <20 mV undershoot. |
Use Scenario: Powers system agent in industrial embedded controllers requiring long-term supply continuity and RoHS-compliant packaging. IC Role / Device Role / Timing Role: Green RoHS-compliant QFN (RGE) package with exposed thermal pad; qualified for –40°C to 85°C operation. Use Value: Ensures lifecycle availability via TI's long-term product support; meets IPC/JEDEC J-STD-020 moisture sensitivity level 3 (MSL-3). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS51461RGER | Lacks integrated V5DRV/V5FILT supplies; requires external 5-V bias sources; same VID, D-CAP+, and pinout. | Suitable only where auxiliary 5-V rails are already available; not drop-in for TPS51462RGER designs relying on internal 5-V generation. | Select TPS51461RGER only if system-level 5-V supplies exist and board area allows removal of two 0.1 µF decoupling caps. |
| ISL95831IRZ | Supports 3-bit VID (8 voltage levels), higher 10 A current rating, and 300 kHz–1.5 MHz adjustable frequency; different pinout and compensation scheme. | Targets higher-power Intel platforms (e.g., mobile H-series); requires redesign of COMP network and layout due to non-pin-compatible footprint. | Choose ISL95831IRZ when scaling beyond 6 A or needing finer-grained VID resolution; not a layout-compatible replacement. |
Compared with TPS51461RGER and ISL95831IRZ, the TPS51462RGER uniquely integrates dual 5-V supplies for self-biasing, offers fixed 2-bit VID optimized for Intel SA, and provides guaranteed non-droop regulation with minimal external components-making it the most direct fit for cost-sensitive, space-constrained SA rail implementations.
Availability
TPS51462RGER is available at Aetrix Electronics and suitable for notebook motherboard design, Intel platform validation, and embedded computing SA power delivery requiring stable component supply, full RoHS compliance, and long-lifecycle support.
Supply support for TPS51462RGER 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 ICs, with decades of expertise in high-efficiency DC-DC conversion and Intel platform reference designs.
The TPS51462RGER belongs to TI's Intel-specific power management portfolio, engineered to meet exacting voltage accuracy, sequencing, and VID transition timing requirements for System Agent domains in client computing platforms.
FAQ
What is the recommended input voltage range for reliable operation of the TPS51462RGER?
The TPS51462RGER operates reliably with input voltages from 3.3 V to 6.5 V. Its absolute maximum rating is 7.0 V on VIN, but recommended operation limits to 6.5 V to ensure robustness across temperature and process variation. Operation below 3.3 V is not supported due to insufficient headroom for the internal 5-V regulators (V5DRV/V5FILT), which require ≥4.5 V to function correctly. The TPS51462RGER is specifically validated for 3.3 V and 5 V input rails in Intel SA applications.
How does the TPS51462RGER implement non-droop output regulation, and what external components are required?
The TPS51462RGER achieves non-droop regulation by connecting a resistor and capacitor between COMP and VREF pins to form a Type II compensation network. This configuration provides high DC gain to eliminate load-induced voltage droop while maintaining phase margin. Required components are RC (e.g., 100 kΩ) and CC (e.g., 1 nF), calculated based on desired bandwidth and zero placement. No output voltage divider is needed-the TPS51462RGER uses internal 2-bit VID DAC for precise voltage setting.
What is the function of the SLEW pin on the TPS51462RGER, and how is it configured for VID transitions?
The SLEW pin on the TPS51462RGER hosts a precision 10 µA current source that charges an external capacitor to control output voltage slew rate during startup and VID transitions. For example, a 10 nF capacitor yields ~1 mV/µs slew rate, ensuring smooth 0.9 V → 0.8 V transitions within Intel's 900 ms reset window. The TPS51462RGER uses this timing to coordinate with processor VID toggling and avoid acoustic noise from abrupt inductor current changes.
Does the TPS51462RGER support automatic pulse-skipping mode, and how does it affect light-load efficiency?
Yes, the TPS51462RGER enters automatic pulse-skipping mode at light loads to maximize efficiency. In this mode, it disables the low-side FET when inductor current reaches zero, preventing reverse current flow and eliminating recirculation losses. Switching frequency decreases proportionally with load, reducing gate drive and switching losses. Typical efficiency at 10 mA output exceeds 70% at 5 V input-significantly higher than forced PWM operation.
What protection features are integrated into the TPS51462RGER, and how do they respond to fault conditions?
The TPS51462RGER integrates OVP (120% of VSLEW), UVP (70% of VSLEW), thermal shutdown (125°C), and ±6 A valley overcurrent protection. Upon OVP/UVP detection, it de-asserts PGOOD and latches off after a short delay; thermal shutdown forces a complete shutdown until temperature drops 10°C. Overcurrent events trigger pulse-by-pulse limiting-no latch unless UVP follows. All protections are internally implemented with no external components required.
TPS51462RGER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- D-CAP+™
- Package/Case:
- 24-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.3V
- Voltage - Input (Max):
- 5V
- Voltage - Output (Min/Fixed):
- 0.675V, 0.725V, 0.8V, 0.85V, 0.9V
- Voltage - Output (Max):
- -
- Current - Output:
- 6A
- Frequency - Switching:
- 700kHz, 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-VQFN (4x4)
TPS51462RGER FAQ
1.How can I place an order for TPS51462RGER through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS51462RGER 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 TPS51462RGER reliable?
The price and inventory of TPS51462RGER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS51462RGER is usually 5 days.
3.What payment methods are accepted for TPS51462RGER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS51462RGER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS51462RGER?
TPS51462RGER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS51462RGER 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 TPS51462RGER?
For technical support, including TPS51462RGER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS51462RGER requirements.
6.How does Aetrix verify that TPS51462RGER is sourced from the original manufacturer or authorized distributors?
All TPS51462RGER 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 TPS51462RGER meets industry standards.
7.What is the process for return or replacement of TPS51462RGER?
All TPS51462RGER units undergo pre-shipment inspection (PSI). If there is an issue with TPS51462RGER, 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 TPS51462RGER part is unused and in its original packaging.
Return procedure for TPS51462RGER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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