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Analog Devices Inc. ADP3160JR-REEL7
- Part No.:
- ADP3160JR-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Special Purpose Regulators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADP3160JR-REEL7.pdf
- Description:
- SYNCHRONOUS BUCK CONTROLLER
- Quantity:
- Payment:
- Shipping:
Inventory:18,000
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Product details
Overview
ADP3160JR-REEL7 from Analog Devices is a 5-bit programmable, 2-phase synchronous buck controller optimized for high-performance CPU core power delivery. It supports VRM 9.0 compliance, delivers 1.1 V to 1.85 V output via VID interface, features ADOPT™ active voltage positioning, and drives external logic-level drivers with antiphase PWM outputs for reduced ripple. It is used in desktop PC power supplies for Intel Pentium 4 and AMD Athlon processors.
For engineers reviewing the ADP3160JR-REEL7 datasheet, ADP3160JR-REEL7 pinout, ADP3160JR-REEL7 application, or ADP3160JR-REEL7 equivalent, key selection criteria include its 16-pin SOIC package, 0°C to 70°C commercial temperature range, dual-phase current balancing, crowbar overvoltage protection, and compatibility with external high-power drivers such as ADP3414/ADP3417.
Technical Context
The ADP3160JR-REEL7 implements a current-mode PWM architecture with fixed-frequency oscillator controlled by an external CT capacitor (e.g., 150 pF for 400 kHz clock → 200 kHz per phase). Its 5-bit VID DAC reads processor voltage identification codes to set regulation between 1.1 V and 1.85 V with ±0.8% total output accuracy over temperature.
It uses high-side current sensing across a single sense resistor for active current balancing between phases, supports cycle-by-cycle current limiting with foldback, and integrates crowbar protection that forces both PWM outputs low upon overvoltage detection (>114% nominal), resetting only when output falls below 50–70% nominal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage Range | 1.1 V to 1.85 V, digitally programmed via 5-bit VID code; enables precise core voltage matching for Pentium 4/Athlon CPUs. |
| Accuracy | ±0.8% over 0°C to 70°C; ensures stable regulation under thermal stress without external calibration. |
| Oscillator Frequency | 430–570 kHz (typ. 500 kHz) set by CT pin; determines 215–285 kHz per phase switching frequency for optimal VRM size/efficiency trade-off. |
| Crowbar Threshold | 114–134% of nominal output; provides hardware-level overvoltage shutdown to protect microprocessors without external components. |
| Power Good Output | Open-drain PWRGD with 76–88% UV and 114–134% OV thresholds; signals valid output voltage to host system for safe boot sequencing. |
| Current Sense Threshold | 142–172 mV (ADP3160); sets peak inductor current limit for short-circuit protection and phase balancing control. |
| Reference Output | 3.0 V ±1.6% (2.952–3.048 V); supplies stable bias for external voltage positioning networks and compensation circuits. |
Pinout & Package
ADP3160JR-REEL7 is housed in a 16-lead narrow-body SOIC (R-16A / SO-16) package with standard JEDEC MS-012AC footprint and 1.27 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VID4–VID0 (Pins 1–5) | Voltage Identification Inputs | 5-bit parallel interface pulled up internally; defines output voltage (1.1–1.85 V) per Table I; all open = "No CPU" shutdown mode. |
| COMP (Pin 6) | Error Amplifier Output | Compensation node for loop stability; also serves as disable input (≤560 mV disables PWM outputs). |
| FB (Pin 7) | Feedback Input | Remote-sense point for output voltage regulation; referenced to GND pin placed near load for accuracy. |
| CT (Pin 8) | Oscillator Timing Input | Connects to ground via external capacitor (e.g., 150 pF) to set switching frequency; controls both phases. |
| GND (Pin 9) | Signal Ground Reference | Common reference for all internal circuits; must be connected near load return path to minimize sensing error. |
| PWRGD (Pin 10) | Power Good Output | Open-drain status signal indicating output is within ±12% of nominal; requires external pull-up for logic-high assertion. |
| CS+ / CS− (Pins 11, 14) | High-Side Current Sense | Differential input measuring voltage across single sense resistor; enables accurate per-phase current monitoring and balancing. |
| PWM1 / PWM2 (Pins 12, 13) | Logic-Level Phase Outputs | Antiphase (180°) signals driving external gate drivers (e.g., ADP3414); not intended for direct MOSFET drive. |
| REF (Pin 15) | 3.0 V Reference Output | Stable voltage source for external circuitry; max 300 mA load; bypassed with 1 nF capacitor to GND. |
| VCC (Pin 16) | Main Supply Input | Accepts 5 V or 12 V input; includes UVLO (6.4 V ±0.5 V) with 0.1–0.6 V hysteresis for reliable startup. |
Key Features
| Feature | Design Value |
|---|---|
| ADOPT™ Active Voltage Positioning | Adjusts output voltage dynamically with load current to optimize transient response and reduce required output capacitance by up to 50%. |
| Active Current Balancing | Ensures equal current sharing between both phases using shared high-side sense resistor-immune to MOSFET RDS(ON) or inductor mismatch. |
| Integrated Crowbar Protection | Hardware-level overvoltage shutdown (<300 ns response) pulls output low without external components, protecting CPU from destructive overvoltage events. |
| VRM 9.0 Compliance | Meets Intel's stringent voltage accuracy, transient response, and sequencing requirements for Pentium 4 platforms at lowest system cost. |
| Dual Logic-Level PWM Outputs | 180° out-of-phase signals with 100–500 mV low-level and ≥4.0 V high-level drive capability, compatible with ADP3414/ADP3417 drivers. |
Applications
| Desktop CPU Core Power | VRM Module Design |
|---|---|
Use Scenario: Regulating 1.1–1.85 V core supply for Intel Pentium 4 processors under dynamic loads up to 53.4 A with <50 A/µs di/dt. IC Role / Device Role / Timing Role: Primary 2-phase synchronous buck controller managing VID decoding, current-mode PWM generation, and active voltage positioning. Use Value: Enables VRM 9.0-compliant design with minimal output capacitors (e.g., nine 2.2 µF MBZ caps) and no external crowbar circuitry. | Use Scenario: Building compact, high-efficiency VRM modules for AMD Athlon-based motherboards requiring tight voltage tolerance and fast transient recovery. IC Role / Device Role / Timing Role: Dual-phase controller providing antiphase PWM timing, current balancing, and PWRGD signaling for module-level health monitoring. Use Value: Reduces inductor size by distributing current across two phases while maintaining <±0.8% output accuracy over temperature. |
| High-Performance Desktop PSU | Legacy x86 Processor Power |
Use Scenario: Implementing 12 V input-to-core voltage conversion in ATX PSUs targeting Pentium 4 platforms with strict EMI and thermal constraints. IC Role / Device Role / Timing Role: Central controller coordinating external MOSFET drivers, current sensing, and overvoltage protection in a 2-phase topology. Use Value: Achieves >90% efficiency at full load while meeting VRM 9.0 ripple and transient specifications without additional ICs. | Use Scenario: Upgrading legacy motherboard power stages to support newer x86 CPUs requiring programmable VID and tighter voltage regulation. IC Role / Device Role / Timing Role: Drop-in replacement for earlier VRM controllers, adding ADOPT™ transient enhancement and integrated crowbar. Use Value: Extends platform lifespan by enabling compliance with newer CPU voltage ID tables and safety requirements without PCB redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 2-phase synchronous buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADP3167JR-REEL7 | Optimized for 5 V input (vs. ADP3160JR-REEL7's 12 V input); different current sense threshold (69–89 mV vs. 142–172 mV) and COMP disable threshold (640–880 mV vs. 560–800 mV). | Targeted at lower-input-voltage VRMs; not interchangeable without adjusting sense resistor and compensation network. | Select ADP3167JR-REEL7 only for 5 V main rail designs; ADP3160JR-REEL7 remains preferred for standard 12 V ATX-derived supplies. |
| ISL6322IRZ | 6-phase capable, integrated MOSFET drivers, higher integration; lacks ADOPT™ but offers digital interface and telemetry. | Suitable for higher-current server/workstation CPUs; requires different layout, driver topology, and firmware support. | Choose ISL6322IRZ for scalability beyond 50 A or digital PMBus control; ADP3160JR-REEL7 better fits cost-sensitive, analog-controlled desktop VRMs. |
Compared with ADP3167JR-REEL7, ADP3160JR-REEL7 delivers superior transient response on 12 V rails due to optimized current-sense gain and ADOPT™ tuning, while ISL6322IRZ trades analog simplicity for multi-phase flexibility and digital configurability-neither is pin-compatible nor drop-in replaceable.
Availability
ADP3160JR-REEL7 is available at Aetrix Electronics and suitable for desktop CPU power supplies, VRM modules, and high-performance ATX PSUs requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for ADP3160JR-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 ADP3160JR-REEL7 belongs to Analog Devices' VRM-compliant power controller product line, designed specifically for efficient, low-noise, high-transient-response core voltage regulation in x86 desktop computing platforms.
FAQ
What is the operating temperature range for the ADP3160JR-REEL7?
The ADP3160JR-REEL7 is specified for the commercial temperature range of 0°C to 70°C ambient. Its internal junction temperature must not exceed 125°C under normal operation. Thermal design should account for SOIC package thermal resistance (125°C/W on two-layer board) and ensure adequate copper pour and airflow for sustained 50+ A output applications.
Does the ADP3160JR-REEL7 integrate MOSFET drivers?
No, the ADP3160JR-REEL7 does not integrate MOSFET drivers. It provides dual logic-level antiphase PWM outputs (PWM1/PWM2) intended to interface with external high-current gate drivers such as the ADP3414 or ADP3417. Direct connection to power MOSFETs is not supported due to limited sink/source current (≤400 mA).
How does the ADP3160JR-REEL7 implement active current balancing between phases?
The ADP3160JR-REEL7 achieves active current balancing by using a single high-side current sense resistor shared between both phases and sampling current during each phase's ON time with the same internal comparator (CMP1). This eliminates imbalance from MOSFET RDS(ON) or inductor DCR mismatches and ensures equal load division even under large transients.
What is the purpose of the COMP pin on the ADP3160JR-REEL7?
The COMP pin on the ADP3160JR-REEL7 serves two functions: (1) it is the error amplifier output used for loop compensation via external RC network, and (2) it acts as an enable/disable input - pulling COMP ≤560 mV disables PWM outputs and halts switching while retaining REF output and bias functionality.
Can the ADP3160JR-REEL7 be used with a 5 V input supply?
No - the ADP3160JR-REEL7 is optimized for 12 V input operation. For 5 V input applications, Analog Devices specifies the ADP3167JR-REEL7, which features adjusted current sense thresholds, COMP disable voltage, and oscillator characteristics. Using ADP3160JR-REEL7 with 5 V may result in insufficient gate drive, unstable regulation, or failure to meet VRM 9.0 timing specs.
ADP3160JR-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Applications:
- Controller, High Performance Processor
- Voltage - Input:
- 12V
- Number of Outputs:
- 5
- Voltage - Output:
- 1.1V ~ 1.85V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ADP3160JR-REEL7 FAQ
1.How can I place an order for ADP3160JR-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP3160JR-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 ADP3160JR-REEL7 reliable?
The price and inventory of ADP3160JR-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP3160JR-REEL7 is usually 5 days.
3.What payment methods are accepted for ADP3160JR-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP3160JR-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP3160JR-REEL7?
ADP3160JR-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP3160JR-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 ADP3160JR-REEL7?
For technical support, including ADP3160JR-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP3160JR-REEL7 requirements.
6.How does Aetrix verify that ADP3160JR-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADP3160JR-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 ADP3160JR-REEL7 meets industry standards.
7.What is the process for return or replacement of ADP3160JR-REEL7?
All ADP3160JR-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP3160JR-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 ADP3160JR-REEL7 part is unused and in its original packaging.
Return procedure for ADP3160JR-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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