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Analog Devices Inc. ADP3196JCPZ-RL-AD
- Part No.:
- ADP3196JCPZ-RL-AD
- Manufacturer:
- Analog Devices Inc.
- Category:
- Special Purpose Regulators
- Package:
- 40-VFQFN Exposed Pad, CSP
- Datasheet:
-
ADP3196JCPZ-RL-AD.pdf
- Description:
- 6 BIT PROGRAMMABLE 2-TO 4-PHASE
- Quantity:
- Payment:
- Shipping:
Inventory:172,500
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Product details
Overview
ADP3196JCPZ-RL-AD from onsemi is a 6-bit programmable 2- to 4-phase synchronous buck controller optimized for AMD processor core power delivery. It features ±10 mV differential sensing error over temperature, logic-level PWM outputs (PWM1–PWM4), digitally programmable output voltage (0.3750 V to 1.55 V), and active current balancing across all phases - enabling high-efficiency VRM modules in desktop PC power supplies.
For engineers reviewing the ADP3196JCPZ-RL-AD datasheet, ADP3196JCPZ-RL-AD pinout, ADP3196JCPZ-RL-AD application, or ADP3196JCPZ-RL-AD equivalent, key selection criteria include phase programmability (2/3/4-phase via PWM pin strapping), VID DAC interface compatibility with AMD CPUs, load-line positioning accuracy (±80 mV), and integrated short-circuit protection with latch-off delay.
Technical Context
The ADP3196JCPZ-RL-AD implements a multimode PWM architecture with internal 6-bit VID DAC, supporting dynamic voltage scaling via CPU-sourced VID codes (VID0–VID5). Its oscillator frequency (0.25–4 MHz) is set by an external RT resistor and divided by the active phase count (2, 3, or 4), delivering up to 1 MHz per phase.
It integrates dedicated current sensing (CSSUM/CSREF/CSCOMP) for total output current measurement and independent SW1–SW4 inputs for per-phase current monitoring, enabling both active load-line positioning and real-time thermal balancing. The device uses a shunt regulator for direct 12 V system supply connection via a 340 Ω series resistor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage Range | 0.3750 V to 1.55 V, digitally set via 6-bit VID code - matches AMD processor core voltage requirements. |
| Differential Sensing Error | ±10 mV worst-case over 0°C to +85°C - ensures tight regulation under thermal stress without remote sense compensation. |
| Phase Configuration | 2-, 3-, or 4-phase selectable via PWM3/PWM4 pin strapping - enables scalable power stage design without changing IC. |
| Switching Frequency | Up to 1 MHz per phase (master clock up to 4 MHz) - balances efficiency, VRM size, and transient response. |
| Current Limit Threshold | 80–125 mV (VCL), programmable via ILIMIT resistor - provides adjustable overcurrent protection with latch-off delay. |
| Power-Good Window | ±200–300 mV OV/UV relative to DAC output - supports dynamic VID changes with 100–250 μs masking time. |
| Thermal Monitoring | VRMHOT/VRM_OFF outputs triggered at 765–855 mV and 1.06–1.15 V TTSENSE thresholds - enables CPU-prochot–compatible throttling. |
Pinout & Package
ADP3196JCPZ-RL-AD is housed in a 40-lead LFCSP (Lead Frame Chip Scale Package) with exposed EPAD thermally connected to GND. Pin 1 is marked by a dot; EPAD must be soldered to PCB ground for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable Input | Pull low to disable all PWM outputs and force PWRGD low - supports system-level power sequencing. |
| PWM1–PWM4 (Pins 27–30, 22–25) | Logic-Level PWM Outputs | Drive external MOSFET gate drivers (e.g., ADP3120A); phase count configured by strapping PWM3/PWM4 to VCC. |
| VID0–VID5 (Pins 34–39) | Voltage ID Inputs | 6-bit parallel interface to AMD CPU; sets DAC output voltage directly - no external VID translator required. |
| CSREF / CSSUM / CSCOMP (Pins 15, 16, 17) | Current Sense Interface | CSREF = reference node; CSSUM = sum of phase currents; CSCOMP = compensation point for gain/filter - enables DCR or resistor-based current sensing. |
| LLSET (Pin 14) | Load Line Programming | Adjusts output voltage droop vs. load current; connecting to CSREF disables positioning - critical for AMD VRM compliance. |
| VCC (Pin 31) | Internal Shunt Regulator Input | Accepts 12 V input via 340 Ω series resistor; regulates internal 5 V rail - eliminates need for external bias supply. |
Key Features
| Feature | Design Value |
|---|---|
| Enhanced PWM Flex Mode | Improves load transient response by dynamically adjusting PWM ramp slope - reduces output voltage deviation during CPU load steps. |
| Active Current Balancing | Equalizes RMS current across all active phases using SW1–SW4 inputs - prevents thermal hotspots and extends MOSFET lifetime. |
| Digitally Programmable Load Line | Enables precise voltage positioning (VOUT = VID − K×IOUT) via LLSET pin - meets AMD VRM specification for dynamic impedance control. |
| Built-in Power-Good Blanking | Delays PWRGD assertion during VID code changes (100–250 μs) - prevents false system reset during CPU voltage transitions. |
| Programmable Short-Circuit Protection | Latch-off delay (8 ms typical with 10 nF CDELAY) allows brief overload tolerance before shutdown - avoids nuisance tripping during startup. |
Applications
| Desktop PC Core VRM | AMD Processor Power Module |
|---|---|
|
Use Scenario: High-current, low-voltage core supply for AMD Athlon 64 X2 or Phenom processors in ATX desktop motherboards. IC Role / Device Role / Timing Role: Primary multiphase buck controller managing up to four synchronous buck stages, interpreting VID codes and regulating output with <±10 mV sensing error. Use Value: Enables stable 0.375–1.55 V output at >100 A with <1% load-line deviation - satisfies AMD VRM 11.x specifications. |
Use Scenario: Compact, high-density VRM module used in OEM server blades and embedded computing platforms. IC Role / Device Role / Timing Role: Phase-configurable controller driving discrete MOSFETs with logic-level PWM outputs; supports 2-phase operation for cost-sensitive designs. Use Value: Reduces board area by eliminating external VID decoder and simplifies layout with integrated current sensing and thermal monitoring. |
| Thermally Balanced CPU Supply | Dynamic VID-Compatible PSU |
|
Use Scenario: High-performance gaming PC motherboard requiring uniform thermal distribution across power phases. IC Role / Device Role / Timing Role: Per-phase current monitor (via SW1–SW4) and active balancing circuit - continuously adjusts duty cycles to equalize phase currents. Use Value: Achieves <±4% current matching between phases - lowers peak junction temperature by up to 15°C versus unbalanced designs. |
Use Scenario: Desktop power supply supporting CPU frequency scaling (Cool'n'Quiet, Turbo Core) with real-time voltage adjustment. IC Role / Device Role / Timing Role: VID DAC and enhanced PWM mode enable sub-250 μs response to VID code changes - maintains regulation during rapid CPU state transitions. Use Value: Eliminates output overshoot/undershoot during VID slewing - improves system stability and reduces decoupling capacitance requirements. |
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-T | 6-phase capable; uses different VID encoding (5-bit); no integrated shunt regulator - requires external 5 V bias. | Targeted at Intel VRD11.x systems; lacks AMD-specific VID mapping and LLSET-based load line. | Select when designing for Intel platforms or needing >4-phase capability; verify VID table alignment and thermal monitoring interface. |
| RT8803GQW | 4-phase only; fixed 0.5–1.5 V output range; no programmable load line - uses analog current sense instead of DCR-summing. | Cost-optimized for mainstream AMD FM2+ platforms; missing VRMHOT/VRM_OFF outputs and TTSENSE interface. | Choose for simplified BOM and lower-cost designs where full AMD VRM11 compliance is not required. |
Compared with ISL6322IRZ-T and RT8803GQW, ADP3196JCPZ-RL-AD uniquely combines AMD-optimized VID decoding, integrated shunt regulation, and configurable load-line positioning - making it the only option that fully satisfies VRM11.x specifications without external support circuitry.
Availability
ADP3196JCPZ-RL-AD is available at Aetrix Electronics and suitable for desktop PC VRMs, AMD processor power modules, and thermally balanced CPU supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ADP3196JCPZ-RL-AD 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, and sensor solutions for automotive, industrial, and computing markets.
The ADP3196JCPZ-RL-AD belongs to onsemi's high-performance CPU power controller product line, designed specifically to meet AMD VRM specifications for desktop and workstation processors with dynamic voltage scaling and thermal throttling.
FAQ
What is the operating temperature range for the ADP3196JCPZ-RL-AD?
The ADP3196JCPZ-RL-AD is specified for operation across the extended commercial temperature range of 0°C to +85°C ambient. Its junction temperature is rated up to 125°C, and thermal throttling functions (VRMHOT/VRM_OFF) activate based on TTSENSE voltage thresholds calibrated for this range. All key parameters - including differential sensing error (±10 mV) and VID DAC accuracy - are guaranteed within this interval.
How does the ADP3196JCPZ-RL-AD support AMD processor VID protocols?
The ADP3196JCPZ-RL-AD directly interfaces with AMD CPUs via its six VID input pins (VID0–VID5), implementing a 6-bit parallel VID protocol compliant with AMD VRM 11.x specifications. It uses an internal DAC to convert VID codes into precise output voltages from 0.3750 V to 1.55 V, with worst-case differential sensing error held to ±10 mV over temperature - ensuring accurate core voltage regulation without external translation logic.
Can the ADP3196JCPZ-RL-AD operate in 2-phase mode, and how is it configured?
Yes, the ADP3196JCPZ-RL-AD supports 2-phase operation by strapping both PWM3 and PWM4 pins to VCC. During startup, internal comparators detect these high states and configure the phase logic accordingly. This reduces switching frequency per phase (master clock ÷ 2) and disables PWM3/PWM4 outputs while retaining full current balancing and sensing functionality across the two active phases - validated in the ADP3196 datasheet Figure 5 and Theory of Operation section.
What is the purpose of the LLSET pin on the ADP3196JCPZ-RL-AD, and how is it used?
The LLSET pin on the ADP3196JCPZ-RL-AD enables programmable load-line positioning by setting the voltage droop (ΔV = K × IOUT) required for AMD VRM compliance. It accepts a voltage derived from a resistor divider between CSREF and CSCOMP; the difference (CSREF − LLSET) controls active voltage positioning. Connecting LLSET directly to CSREF disables droop entirely - allowing designers to tailor output impedance to match specific CPU thermal and transient requirements.
Does the ADP3196JCPZ-RL-AD require an external 5 V supply, or can it operate from 12 V?
The ADP3196JCPZ-RL-AD includes an integrated shunt regulator that allows direct connection to a 12 V system supply via a 340 Ω series resistor on the VCC pin. This internal regulator maintains a stable 5 V internal rail - eliminating the need for an external 5 V bias supply. The datasheet specifies VCC operating range as 4.65 V to 5.55 V, with UVLO thresholds at 4.1 V (falling) and 9 V (rising), confirming self-contained 12 V operation.
ADP3196JCPZ-RL-AD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- ADP3196
- Package/Case:
- 40-VFQFN Exposed Pad, CSP
- Packaging:
- Bulk
- Product Status:
- Active
- Applications:
- Controller, AMD
- Voltage - Input:
- 4.65V ~ 5.55V
- Number of Outputs:
- 4
- Voltage - Output:
- Programmable
- Operating Temperature:
- 0°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-LFCSP-VQ (6x6)
ADP3196JCPZ-RL-AD FAQ
1.How can I place an order for ADP3196JCPZ-RL-AD through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP3196JCPZ-RL-AD 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 ADP3196JCPZ-RL-AD reliable?
The price and inventory of ADP3196JCPZ-RL-AD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP3196JCPZ-RL-AD is usually 5 days.
3.What payment methods are accepted for ADP3196JCPZ-RL-AD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP3196JCPZ-RL-AD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP3196JCPZ-RL-AD?
ADP3196JCPZ-RL-AD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP3196JCPZ-RL-AD 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 ADP3196JCPZ-RL-AD?
For technical support, including ADP3196JCPZ-RL-AD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP3196JCPZ-RL-AD requirements.
6.How does Aetrix verify that ADP3196JCPZ-RL-AD is sourced from the original manufacturer or authorized distributors?
All ADP3196JCPZ-RL-AD 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 ADP3196JCPZ-RL-AD meets industry standards.
7.What is the process for return or replacement of ADP3196JCPZ-RL-AD?
All ADP3196JCPZ-RL-AD units undergo pre-shipment inspection (PSI). If there is an issue with ADP3196JCPZ-RL-AD, 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 ADP3196JCPZ-RL-AD part is unused and in its original packaging.
Return procedure for ADP3196JCPZ-RL-AD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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