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Analog Devices Inc. ADP3180JRU-REEL
- Part No.:
- ADP3180JRU-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADP3180JRU-REEL.pdf
- Description:
- SYNCHRONOUS BUCK CONTROLLER
- Quantity:
- Payment:
- Shipping:
Inventory:30,000
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Product details
Overview
ADP3180JRU-REEL from Analog Devices is a 6-bit programmable, 2-/3-/4-phase synchronous buck controller for Intel VRM/VRD 10-compliant CPU core supplies. It delivers 0.8375 V to 1.6 V output with ±14.5 mV worst-case differential sensing error over temperature, logic-level PWM outputs for external high-power drivers, and active per-phase current balancing. It targets desktop PC power supplies for next-generation Intel processors.
For engineers reviewing the ADP3180JRU-REEL datasheet, ADP3180JRU-REEL pinout, ADP3180JRU-REEL application, or ADP3180JRU-REEL equivalent, key selection criteria include phase configurability (2/3/4), VID-programmable output voltage range, current-sense accuracy for load-line positioning, soft-start and latch-off delay programmability, and compatibility with ADP3413/ADP3418 gate drivers.
Technical Context
The ADP3180JRU-REEL implements a multimode fixed-frequency PWM architecture with internal 6-bit VID DAC compliant with Intel VRD/VRM 10 specifications. Its oscillator frequency (up to 245 kHz per phase) is set via an external RT resistor and divided by the number of active phases (2, 3, or 4).
It uses differential remote sensing (FB/FBRTN) referenced to the processor's sense ground, integrates a dedicated current sense amplifier (CSA) with programmable gain for accurate total output current measurement, and supports dynamic on-the-fly VID code changes with 250 µs PWRGD/CROWBAR blanking to prevent false fault assertions during voltage transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage Range | 0.8375 V to 1.6 V, digitally programmed via 6-bit VID inputs per Intel VRD/VRM 10 |
| Differential Sensing Error | ±14.5 mV worst-case over 0°C to 85°C, enabling tight regulation at low voltages |
| Phase Configuration | Selectable 2-, 3-, or 4-phase operation via PWM3/PWM4 grounding, supporting scalable current delivery |
| Switching Frequency | Up to 245 kHz per phase (master clock up to 980 kHz), set by external RT resistor |
| Current Limit Threshold | Programmable via ILIMIT pin resistor; 10.4 mV/µA scaling enables precise overcurrent trip point setting |
| Power Good Delay | Programmable via DELAY pin RC network; accommodates on-the-fly VID changes without false PWRGD assertion |
| Soft-Start Time | Controlled by same DELAY pin RC network; limits inrush current during power-up |
Pinout & Package
ADP3180JRU-REEL is housed in a 28-lead TSSOP (RU-28) package with exposed pad for thermal performance. Pin functions are validated per Analog Devices ADP3180 datasheet Rev. A.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VID0–VID5 | Voltage Identification Inputs | 6-bit digital interface to CPU; sets nominal output voltage (0.8375–1.6 V) and enables "No CPU" shutdown when open |
| FB / FBRTN | Differential Feedback Inputs | Remote sense pair referenced to processor ground; enables accurate regulation at load point with minimal offset error |
| PWM1–PWM4 | Logic-Level PWM Outputs | Drive external high-current gate drivers (e.g., ADP3418); phase count configured by grounding PWM3/PWM4 |
| SW1–SW4 | Per-Phase Current Balance Inputs | Monitor switch-node voltage for active current balancing; unused SW pins must be left open |
| CSREF / CSSUM / CSCOMP | Current Sense Interface | CSREF = common reference point; CSSUM = summing node for inductor currents; CSCOMP = compensation point for load-line slope and response |
| ILIMIT / DELAY / RT / RAMPADJ | Configuration Terminals | ILIMIT sets current limit threshold; DELAY sets soft-start and latch-off delay; RT sets master clock; RAMPADJ adjusts internal PWM ramp slope |
Key Features
| Feature | Design Value |
|---|---|
| Active per-phase current balancing | Maintains thermal and current uniformity across all enabled phases, improving reliability and efficiency under transient load |
| Programmable short-circuit protection with latch-off delay | Enables controlled shutdown and recovery after overcurrent events using external RC timing on DELAY pin |
| On-the-fly VID code change support | Allows dynamic CPU voltage scaling during operation with 250 µs blanking of PWRGD and CROWBAR to prevent false faults |
| Integrated 6-bit VID DAC and precision reference | Eliminates need for external DAC; provides direct, accurate mapping from CPU VID code to regulated output voltage |
| Differential remote sensing with <±14.5 mV error | Ensures stable regulation at the microprocessor's sense point despite PCB trace resistance and noise |
Applications
| Desktop VRM Module | Intel Processor Core Supply |
|---|---|
Use Scenario: Power delivery for LGA775 and later Intel Pentium 4, Core 2, and early Core i-series CPUs requiring VRM 10 compliance. IC Role / Device Role / Timing Role: Primary multiphase buck controller managing voltage regulation, current sharing, and dynamic VID response. Use Value: Enables precise 0.8375–1.6 V output with active load-line positioning and ±14.5 mV sensing accuracy at the CPU sense point. |
Use Scenario: High-current, low-voltage DC-DC conversion in ATX mainboards where thermal management and transient response are critical. IC Role / Device Role / Timing Role: Synchronous buck controller driving external MOSFET gate drivers (e.g., ADP3418) in 2-/3-/4-phase topology. Use Value: Supports up to 4-phase interleaving to reduce output ripple, improve thermal distribution, and extend component lifetime. |
| Dynamic Voltage Scaling System | High-Efficiency Desktop PSU |
Use Scenario: Real-time CPU voltage adjustment during performance state transitions (e.g., C-states, Turbo Boost). IC Role / Device Role / Timing Role: Controller with built-in VID OTF capability and 250 µs fault-blanking window to maintain system stability during voltage slewing. Use Value: Eliminates need for external VID sequencers; ensures seamless voltage transitions without PWRGD glitches or crowbar activation. |
Use Scenario: Energy-efficient power supply design meeting 80 PLUS Bronze/Silver requirements for mid-range desktop systems. IC Role / Device Role / Timing Role: Efficiency-optimized controller with programmable switching frequency and low quiescent current (6.5 mA typical). Use Value: Enables optimization of inductor size vs. efficiency trade-off via RT resistor selection and supports light-load efficiency via no-load offset programming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multiphase buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6322IRZ | 6-bit VID, 2-/3-/4-phase, but uses different current sensing architecture (single-ended vs. differential) and lacks integrated RAMPADJ control | Designed for Intel VRM 11.0/11.1; requires external ramp generator and has higher typical VOS(CSA) | Choose ISL6322IRZ only if migrating to VRM 11.0-compliant platforms with existing layout accommodating its pinout and sensing method |
| TPS51220ARGER | Supports 2-/3-phase only; integrates MOSFET drivers (no external driver needed); lower max output voltage (1.5 V) and no RAMPADJ pin | Targeted at cost-sensitive mobile/embedded designs; not VRM 10-compliant; lacks VID OTF blanking and crowbar features | Choose TPS51220ARGER for space-constrained, driver-integrated solutions where VRM 10 compliance and advanced protection are not required |
Compared with ISL6322IRZ and TPS51220ARGER, ADP3180JRU-REEL offers superior differential sensing accuracy (±14.5 mV), full VRM 10 compliance including VID OTF blanking, and flexible RAMPADJ-based PWM slope control-making it optimal for high-performance desktop VRM modules demanding precision and robustness.
Availability
ADP3180JRU-REEL is available at Aetrix Electronics and suitable for desktop PC power supplies, Intel VRM modules, and high-efficiency CPU core supplies requiring stable component supply, long-term lifecycle support, and commercial-temperature-grade reliability.
Supply support for ADP3180JRU-REEL 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, communications, automotive, and consumer markets.
The ADP3180JRU-REEL belongs to Analog Devices' high-efficiency power management controller product line, designed specifically for Intel-compliant multiphase CPU core voltage regulation with emphasis on accuracy, thermal balance, and dynamic VID responsiveness.
FAQ
What is the operating temperature range for the ADP3180JRU-REEL?
The ADP3180JRU-REEL is specified for the commercial temperature range of 0°C to 85°C ambient. Its junction temperature is rated up to 125°C, and it includes UVLO circuitry that disables operation below 6.5 V on VCC to ensure safe startup and shutdown behavior across this range. This makes ADP3180JRU-REEL suitable for standard desktop motherboard environments without forced airflow constraints.
How does the ADP3180JRU-REEL configure 2-phase versus 4-phase operation?
The ADP3180JRU-REEL detects phase count automatically during startup by monitoring PWM3 and PWM4 pin voltages. Leaving both pins floating configures 4-phase mode; grounding PWM4 selects 3-phase; grounding both PWM3 and PWM4 selects 2-phase. The detection occurs within the first two oscillator cycles, after which the pins become active logic-level outputs. This eliminates need for configuration registers or external logic, simplifying board design for ADP3180JRU-REEL.
Can the ADP3180JRU-REEL support dynamic VID changes while the system is running?
Yes, the ADP3180JRU-REEL fully supports on-the-fly VID code changes during normal operation. When VID inputs transition, ADP3180JRU-REEL blanks PWRGD and CROWBAR outputs for ≥250 µs to prevent false fault assertions, and ignores VID input skew for ≥400 ns. This allows seamless voltage scaling for Intel processor performance states without requiring system reset or power cycle-critical for ADP3180JRU-REEL deployment in modern desktop VRMs.
What external components are required to set the switching frequency of the ADP3180JRU-REEL?
The ADP3180JRU-REEL switching frequency is set solely by an external resistor (RT) connected between the RT pin and GND. The master clock frequency (up to 980 kHz) is determined by RT value per the graph in the datasheet (TPC 1), then divided by the number of active phases (2, 3, or 4) to yield per-phase frequency. No capacitor or additional passive components are required-only a precision metal-film resistor is needed for stable ADP3180JRU-REEL frequency programming.
Does the ADP3180JRU-REEL integrate MOSFET gate drivers?
No, the ADP3180JRU-REEL does not integrate MOSFET gate drivers. It provides logic-level PWM outputs (PWM1–PWM4) designed to interface directly with external high-current gate driver ICs such as the ADP3413 or ADP3418. This architecture allows designers to select drivers optimized for specific Rds(on), gate charge, and thermal requirements-enhancing flexibility and efficiency in ADP3180JRU-REEL-based VRM designs.
ADP3180JRU-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- ADP3180
- Package/Case:
- 28-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Output Type:
- PWM
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Number of Outputs:
- 4
- Output Phases:
- 4
- Voltage - Supply (Vcc/Vdd):
- 12V
- Frequency - Switching:
- 250kHz ~ 4MHz
- Duty Cycle (Max):
- -
- Synchronous Rectifier:
- Yes
- Clock Sync:
- No
- Serial Interfaces:
- -
- Control Features:
- Current Limit, Enable, Power Good, Ramp
- Operating Temperature:
- 0°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-TSSOP
ADP3180JRU-REEL FAQ
1.How can I place an order for ADP3180JRU-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP3180JRU-REEL 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 ADP3180JRU-REEL reliable?
The price and inventory of ADP3180JRU-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP3180JRU-REEL is usually 5 days.
3.What payment methods are accepted for ADP3180JRU-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP3180JRU-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP3180JRU-REEL?
ADP3180JRU-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP3180JRU-REEL 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 ADP3180JRU-REEL?
For technical support, including ADP3180JRU-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP3180JRU-REEL requirements.
6.How does Aetrix verify that ADP3180JRU-REEL is sourced from the original manufacturer or authorized distributors?
All ADP3180JRU-REEL 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 ADP3180JRU-REEL meets industry standards.
7.What is the process for return or replacement of ADP3180JRU-REEL?
All ADP3180JRU-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADP3180JRU-REEL, 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 ADP3180JRU-REEL part is unused and in its original packaging.
Return procedure for ADP3180JRU-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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