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Analog Devices Inc. ADP3180JRU-REEL7
- Part No.:
- ADP3180JRU-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADP3180JRU-REEL7.pdf
- Description:
- SYNCHRONOUS BUCK CONTROLLER
- Quantity:
- Payment:
- Shipping:
Inventory:18,000
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Product details
Overview
ADP3180JRU-REEL7 from Analog Devices is a 6-bit programmable, 2-/3-/4-phase synchronous buck controller optimized for Intel VRM core power delivery. It features ±14.5 mV worst-case differential sensing error, logic-level PWM outputs (0.4 V low / 5 V high), active current balancing across all phases, and programmable short-circuit protection with latch-off delay. It targets desktop PC power supplies for next-generation Intel processors.
For engineers reviewing the ADP3180JRU-REEL7 datasheet, ADP3180JRU-REEL7 pinout, ADP3180JRU-REEL7 application, or ADP3180JRU-REEL7 equivalent, key selection considerations include phase configurability (2/3/4), VID-programmable output (0.8375 V–1.6 V), current-sense accuracy (±3 mV offset), soft-start timing control via external RC on DELAY pin, and crowbar protection with 450 µs blanking during VID on-the-fly transitions.
Technical Context
The ADP3180JRU-REEL7 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 by an external resistor on RT, and phase count is determined dynamically by grounding PWM3/PWM4 pins - enabling 2-, 3-, or 4-phase operation without reconfiguration logic.
It integrates independent current-sense amplification (CSSUM/CSREF/CSCOMP), active current balancing per switch node (SW1–SW4), and dual-loop control: voltage-mode regulation via FB/COMP with programmable load-line positioning, and current-limit protection triggered when CSREF–CSCOMP exceeds 10.4 mV/µA threshold set by ILIMIT resistor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage Range | 0.8375 V to 1.6 V, digitally programmed via 6-bit VID code per Intel VRM spec |
| Differential Sensing Error | ±14.5 mV worst-case over 0°C–85°C, enabling precise remote sensing at CPU sense point |
| Phase Configuration | Selectable 2-, 3-, or 4-phase operation; configured by grounding PWM3/PWM4 pins |
| PWM Output Drive | Logic-level (0.4 V low / 5 V high), designed to interface directly with external gate drivers like ADP3418 |
| Current Limit Threshold | Programmable via ILIMIT pin resistor; 10.4 mV/µA scaling enables accurate per-phase or total-current limiting |
| Soft-Start & Latch-Off Delay | Shared RC network on DELAY pin sets both ramp-up time and overcurrent latch-off delay (3 V → 1.8 V discharge) |
| Power Good Accuracy | ±200 mV undervoltage / +150 mV overvoltage window relative to nominal DAC output, with 250 µs blanking during VID changes |
Pinout & Package
ADP3180JRU-REEL7 is housed in a 28-lead TSSOP package (RU-28), thermally rated for 100°C/W junction-to-air, and specified for 0°C to 85°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VID0–VID5 | Voltage ID DAC Inputs | 6-bit parallel interface reading processor VID code; open pins default to logic high; unused phases disable PWM outputs |
| FB / FBRTN | Differential Feedback Inputs | Remote sensing pair: FB connects to CPU sense point via resistor; FBRTN ties to remote ground, referenced by internal DAC and error amp |
| PWM1–PWM4 | Logic-Level Phase Outputs | Drive external high-power MOSFET drivers; grounding PWM3+PWM4 configures 2-phase mode; each pin has ~5 kΩ detection resistance during startup |
| SW1–SW4 | Per-Phase Current Balance Inputs | Monitor switch-node voltage for real-time phase current balancing; unused SW pins must be left open |
| CSREF / CSSUM / CSCOMP | Current Sense Interface | CSREF = reference point (tied to inductor common); CSSUM = summing node for average current; CSCOMP = compensation point setting gain/slope |
| ILIMIT / DELAY / RT / RAMPADJ | Programmable Timing & Protection | ILIMIT sets current limit threshold; DELAY sets soft-start/latch-off delay; RT sets master clock; RAMPADJ adjusts internal PWM ramp slope |
Key Features
| Feature | Design Value |
|---|---|
| Active Current Balancing | Maintains ≤7% input current matching across phases under dynamic load, reducing thermal stress on individual MOSFETs and inductors |
| VID On-the-Fly Support | Enables real-time CPU voltage scaling with 250 µs PWRGD/CROWBAR blanking and 400 ns VID skew immunity |
| Programmable Load-Line Positioning | Uses CSCOMP signal to offset DAC reference, achieving tight droop control (e.g., 0.5 mΩ effective impedance) without external components |
| Integrated Crowbar Protection | Forces low-side MOSFETs on when output exceeds +150 mV OV threshold, releasing only after falling below +450 mV |
| No-CPU Detection | Automatically disables PWM outputs when all VID inputs float, preventing unregulated startup in absence of processor |
Applications
| Desktop VRM Modules | Intel Core Processor Power |
|---|---|
Use Scenario: High-current core supply for LGA775 and later Intel desktop CPUs requiring dynamic VID adjustment and tight voltage tolerance. IC Role / Device Role / Timing Role: Primary multiphase buck controller managing up to four synchronous buck stages, coordinating phase interleaving and current sharing. Use Value: Enables <1.6 V output with ±14.5 mV sensing accuracy and <250 µs blanking during VID transitions-meeting VRM 10.1 transient response requirements. | Use Scenario: Motherboard power delivery subsystem where thermal management and PCB layout noise immunity are critical. IC Role / Device Role / Timing Role: Voltage regulator controller implementing active impedance control mode to position output voltage as function of load current. Use Value: Reduces output capacitor count by 30% vs. single-phase designs through 4-phase ripple cancellation and improves thermal distribution across MOSFETs. |
| Server Board Power | High-Efficiency CPU Core Supply |
Use Scenario: Dual-socket workstation boards needing stable, scalable core voltage with programmable protection thresholds. IC Role / Device Role / Timing Role: Configurable phase controller supporting 2-phase (low-cost) or 4-phase (high-performance) topologies via simple pin strapping. Use Value: Delivers >100 A output with <0.5% line/load regulation drift using differential remote sensing and integrated current balancing. | Use Scenario: Energy-efficient computing platforms requiring adaptive voltage scaling during idle/active states. IC Role / Device Role / Timing Role: Synchronous buck controller with soft-start delay and latch-off delay sharing same RC network on DELAY pin. Use Value: Simplifies BOM by eliminating separate timing components while ensuring controlled inrush current and reliable fault recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multiphase buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6322CRZ-T | 6-bit VID, 3-/4-phase, 0.3–1.5 V range; uses different current-sense topology (single-ended vs. differential) | Lacks built-in crowbar; requires external comparator for overvoltage shutdown | Preferred when cost-sensitive designs accept reduced protection integration and simpler current sensing |
| TPS51216RUKR | 5-bit VID, 2-/3-phase, 0.5–1.5 V range; lower max phase count and narrower voltage range than ADP3180JRU-REEL7 | Optimized for mobile VRMs; lacks active current balancing circuitry and programmable latch-off delay | Suitable for space-constrained embedded systems where full desktop VRM feature set is unnecessary |
Compared with ISL6322CRZ-T and TPS51216RUKR, ADP3180JRU-REEL7 provides broader output voltage range (0.8375–1.6 V), superior differential sensing accuracy (±14.5 mV), and integrated crowbar protection-making it uniquely suited for high-reliability Intel desktop VRM modules demanding strict VRM 10 compliance.
Availability
ADP3180JRU-REEL7 is available at Aetrix Electronics and suitable for desktop VRM modules, Intel processor power supplies, and high-efficiency CPU core supply designs requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ADP3180JRU-REEL7 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, headquartered in Norwood, MA.
The ADP3180JRU-REEL7 belongs to Analog Devices' VRM/VRD-compliant multiphase controller product line, engineered specifically for high-current, low-voltage CPU core power delivery in desktop and workstation platforms.
FAQ
What is the maximum switching frequency per phase supported by the ADP3180JRU-REEL7?
The ADP3180JRU-REEL7 supports up to 245 kHz per phase in 4-phase mode, with master clock frequency set by the RT pin resistor. When configured for fewer phases (e.g., 2-phase), the per-phase frequency increases proportionally-reaching up to 490 kHz with the same RT value. This scalability allows optimization of efficiency versus VRM size.
How does the ADP3180JRU-REEL7 implement current balancing across multiple phases?
The ADP3180JRU-REEL7 uses dedicated SW1–SW4 inputs to monitor switch-node voltages per phase, feeding into an internal current balancing circuit that adjusts PWM duty cycles in real time. It achieves ≤7% current mismatch between phases under dynamic load, improving thermal distribution and enabling higher total output current without derating individual components.
Can the ADP3180JRU-REEL7 operate without a connected CPU or VID source?
Yes-the ADP3180JRU-REEL7 detects "No CPU" mode when all VID0–VID5 pins are left open (internally pulled high), automatically disabling PWM outputs and entering standby. This prevents uncontrolled startup and protects downstream components in absence of a valid VID code.
What is the role of the RAMPADJ pin on the ADP3180JRU-REEL7?
The RAMPADJ pin on the ADP3180JRU-REEL7 sets the slope of the internal PWM ramp by connecting an external resistor from the converter's input voltage (e.g., 12 V) to this pin. Adjusting this resistor tunes transient response and feed-forward behavior-critical for maintaining stability during rapid load steps in high-performance CPU power delivery.
Does the ADP3180JRU-REEL7 support dynamic VID voltage changes during operation?
Yes-the ADP3180JRU-REEL7 fully supports VID on-the-fly (OTF) transitions, including blanking of PWRGD and CROWBAR signals for 250 µs after each VID code change. It tolerates logic skew up to 400 ns and maintains regulation during multi-step voltage adjustments required by Intel SpeedStep technology.
ADP3180JRU-REEL7 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-REEL7 FAQ
1.How can I place an order for ADP3180JRU-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP3180JRU-REEL7 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-REEL7 reliable?
The price and inventory of ADP3180JRU-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP3180JRU-REEL7 is usually 5 days.
3.What payment methods are accepted for ADP3180JRU-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP3180JRU-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP3180JRU-REEL7?
ADP3180JRU-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP3180JRU-REEL7 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-REEL7?
For technical support, including ADP3180JRU-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP3180JRU-REEL7 requirements.
6.How does Aetrix verify that ADP3180JRU-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADP3180JRU-REEL7 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-REEL7 meets industry standards.
7.What is the process for return or replacement of ADP3180JRU-REEL7?
All ADP3180JRU-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP3180JRU-REEL7, 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-REEL7 part is unused and in its original packaging.
Return procedure for ADP3180JRU-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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