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Renesas ZL2106ALCNT
- Part No.:
- ZL2106ALCNT
- Manufacturer:
- Renesas
- Package:
- 36-WFQFN Exposed Pad
- Datasheet:
-
ZL2106ALCNT.pdf
- Description:
- IC REG BUCK PROG 6A 36TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,646
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Product details
Overview
ZL2106ALCNT from Intersil (now Renesas) is a digital, synchronous step-down DC/DC converter IC integrating dual N-channel MOSFETs, PMBus™-compliant I²C/SMBus interface, non-volatile memory, and full power management functions-including soft-start, sequencing, tracking, margining, and fault protection-for 6A continuous output. It operates from 4.5V–14V input and delivers 0.54V–5.5V output with ±1% voltage accuracy in telecom, networking, and industrial distributed power systems.
For engineers reviewing the ZL2106ALCNT datasheet, ZL2106ALCNT pinout, ZL2106ALCNT application, or ZL2106ALCNT equivalent, key selection considerations include its 36-pin QFN package, integrated 6A power stage, digital configurability via pin-strapping or PMBus, thermal overload and overcurrent protection, and compatibility with Zilker Labs Digital-DC™ ecosystem for multi-rail coordination.
Technical Context
The ZL2106ALCNT implements a mixed-signal PWM control architecture combining analog loop stability with digital configuration and monitoring. Its internal 7V and 5V LDOs bias gate drivers and analog circuitry, while the BST-SW bootstrap circuit enables high-side FET drive without external components. The device supports phase spreading via SYNC pin and interoperability across multiple devices using the open-drain Digital-DC (DDC) bus.
Power management logic includes configurable UVLO (2.85V–16V), programmable current limit (0.2A–9.0A), thermal shutdown (configurable from −40°C to +125°C), and precise power-good assertion with 2–20ms delay. All settings-voltage setpoint, soft-start ramp/delay, tracking slope, and fault thresholds-can be stored in on-chip NVM and modified dynamically via PMBus commands.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 6A continuous RMS; supports peak switch node current up to 9A for transient handling without external current sensing. |
| Input Voltage Range | 4.5V to 14V; accommodates 5V and 12V distributed bus architectures with internal bias generation eliminating need for auxiliary supplies. |
| Output Voltage Range | 0.54V to 5.5V; includes margining capability (±5%) and factory-set power-good threshold at 90% VOUT. |
| Voltage Accuracy | ±1% over line, load, and temperature (−40°C to +85°C); ensures stable regulation for sensitive ASIC/FPGA cores. |
| Switching Frequency | 200kHz to 1MHz; adjustable via pin-strapping or PMBus; enables optimization of efficiency vs. size trade-offs in PCB layout. |
| Interface Protocol | PMBus v1.2 compliant over I²C/SMBus; supports real-time telemetry (VOUT, IOUT, temperature), fault logging, and Snapshot™ parametric capture. |
| Protection Features | UVLO, OVP, OCP (programmable), OTP (125°C default), pre-bias start-up, and output tracking-all configurable and latched or auto-recover per setting. |
Pinout & Package
Package: 36-lead 6mm × 6mm QFN with exposed thermal pad (SGND-connected). Thermal resistance θJA = 28°C/W, θJC = 1.7°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PG | Power-good status output | Open-drain or push-pull; asserts high 100ms after VOUT stabilizes within ±1% regulation band. |
| 3 SYNC | Frequency synchronization I/O | Accepts external clock or outputs synchronized switching signal to coordinate multiple converters and reduce input ripple. |
| 4 VSET | Output voltage set-point input | Analog resistor-divider input; sets nominal VOUT and max margin limit; also used for UVLO configuration. |
| 6 SCL / 7 SDA | I²C/SMBus bidirectional interface | Enable full PMBus command set access for configuration, telemetry, and firmware updates without host processor intervention. |
| 15–19 PGND | Power ground return | Low-inductance path for high-current switching node (SW); must connect directly to thermal pad and solid ground plane. |
| 20–25 SW | Switching node terminals | Five paralleled pins reduce conduction loss and thermal stress; connect directly to inductor and low-ESR output capacitor. |
| 26 BST | Bootstrap supply for high-side driver | Charges via internal Schottky diode; referenced to SW; eliminates need for external bootstrap capacitor and diode. |
| ePad | Exposed thermal pad | Electrically tied to SGND; primary thermal path to PCB; requires solder mask defined stencil and ≥80% copper fill for optimal θJA. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | Low rDS(ON) high-side (60–85 mΩ) and low-side (43–65 mΩ) N-MOSFETs enable >90% efficiency at 6A/3.3V out from 12V input. |
| Digital Configuration Storage | On-chip non-volatile memory retains all pin-strapped and PMBus-configured settings across power cycles-no external EEPROM required. |
| Snapshot™ Parametric Capture | Hardware-triggered capture of real-time waveforms (VOUT, IOUT, temperature) during fault events for post-mortem diagnostics without host CPU involvement. |
| Multi-Rail Coordination | Digital-DC (DDC) bus enables automatic phase spreading, fault spreading, and synchronized sequencing across up to 16 Zilker Labs devices on one bus. |
| Flexible Enable & Sequencing | EN pin supports hardware-controlled startup; SS and CFG pins allow precise timing control of ramp delay, ramp time, and tracking sequence order. |
Applications
| Telecom Point-of-Load Regulation | Industrial FPGA Power Supply |
|---|---|
Use Scenario: Regulating 1.2V/6A core voltage for high-speed telecom ASICs in base station line cards with strict ripple and transient response requirements. IC Role / Device Role / Timing Role: Primary synchronous buck regulator with digital loop compensation, PMBus telemetry, and fast OCP response (<16µs). Use Value: ±1% output accuracy and programmable current limit ensure reliable operation under dynamic load steps; Snapshot™ captures transient anomalies for root-cause analysis. |
Use Scenario: Delivering 0.85V/6A to Xilinx Kintex Ultrascale+ FPGA banks requiring precise voltage tracking and sequencing relative to auxiliary rails. IC Role / Device Role / Timing Role: Digitally managed POL converter supporting voltage tracking (VTRK), margining (MGN), and power-good coordination via DDC bus. Use Value: Pin-strappable tracking slope and PMBus-adjustable margins simplify compliance testing; integrated sequencing eliminates external timing controllers. |
| Network Switch ASIC Core Supply | Test Equipment Distributed Power |
Use Scenario: Providing 0.95V/6A to Broadcom Tomahawk ASICs in 100G Ethernet switches where thermal density and EMI are critical constraints. IC Role / Device Role / Timing Role: High-efficiency, digitally configurable buck converter with phase spreading (SYNC) and thermal derating based on junction temperature feedback. Use Value: 200kHz–1MHz frequency tuning allows optimization for low EMI or small magnetics; θJC = 1.7°C/W enables compact heatsinkless designs. |
Use Scenario: Powering multiple isolated subsystems in automated test equipment requiring independent voltage control, margining, and fault isolation. IC Role / Device Role / Timing Role: Standalone digital power module with NVM-stored configurations, enabling hot-swap reprogramming and field calibration without firmware update. Use Value: Internal 2.5V/5V/7V LDOs eliminate need for auxiliary bias rails; DDC bus allows coordinated shutdown across 16 devices during overtemperature events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP8770GQ-Z | Monolithic 6A buck with I²C interface but no PMBus compliance, no NVM, no DDC bus, and no tracking/margining support. | Limited to basic voltage regulation; lacks multi-rail coordination, telemetry logging, and field-programmable fault thresholds. | Select when cost sensitivity outweighs configurability needs and system uses only single-rail operation without sequencing. |
| TPS546D24RSAR | 6A PMBus-compliant buck with NVM and telemetry, but no integrated tracking/margining pins; requires external resistors for VOUT setpoint. | Supports full PMBus monitoring but lacks pin-strappable sequencing and analog tracking inputs (VTRK, SS, CFG). | Select when host-based configuration is preferred and board space permits external resistor networks for voltage programming. |
Compared with MP8770GQ-Z and TPS546D24RSAR, the ZL2106ALCNT uniquely integrates analog pin-strappable power management (tracking, sequencing, margining), on-chip NVM storage, and Zilker Labs Digital-DC bus interoperability-enabling autonomous multi-rail coordination without host CPU overhead.
Availability
ZL2106ALCNT is available at Aetrix Electronics and suitable for telecom infrastructure, industrial FPGA power delivery, and test equipment distributed power systems requiring stable component supply, long-term lifecycle support, and digital configurability.
Supply support for ZL2106ALCNT 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
Intersil (acquired by Renesas Electronics in 2017) is a semiconductor company specializing in precision analog, power management, and interface ICs for high-reliability industrial and communications applications.
The ZL2106ALCNT belongs to the Zilker Labs Digital-DC™ product line, designed specifically for intelligent, self-contained point-of-load power conversion with embedded digital management-targeting systems needing autonomous fault response, multi-rail coordination, and field-upgradable power policies.
FAQ
What is the maximum output current rating of the ZL2106ALCNT?
The ZL2106ALCNT delivers 6A continuous RMS output current with peak switch node current capability up to 9A. This rating is validated across −40°C to +85°C ambient with proper thermal design (θJA ≤ 28°C/W) and appropriate output capacitance. Derating applies above +85°C ambient per the dissipation limits table in the FN6852 datasheet.
Does the ZL2106ALCNT require external MOSFETs or gate drivers?
No, the ZL2106ALCNT integrates both high-side and low-side N-channel MOSFETs with matched rDS(ON) (60–85 mΩ and 43–65 mΩ respectively), along with bootstrap circuitry and internal LDOs. No external MOSFETs, drivers, or bootstrap components are needed-only input/output capacitors, inductor, and optional feedback resistors for pin-strapped VOUT.
Can the ZL2106ALCNT operate from a 3.3V input supply?
No-the ZL2106ALCNT requires minimum 4.5V on VDDP/VDDS for normal operation. However, it supports 3.3V standby operation via dedicated bias paths: when main input is absent, internal regulators can be powered from a 3.3V or 5V auxiliary rail to enable PMBus readback of telemetry and fault logs without main power applied.
How is output voltage accuracy maintained across temperature and load?
The ZL2106ALCNT achieves ±1% total output voltage error over line, load, and temperature (−40°C to +85°C) through a combination of trimmed internal reference, closed-loop digital PWM control with adaptive compensation, and real-time VSEN feedback. This specification includes effects of rDS(ON) drift, PCB trace resistance, and thermal coefficient of external resistors used in VSET divider networks.
Is the ZL2106ALCNT pin-compatible with other Zilker Labs Digital-DC devices?
No-ZL2106ALCNT is not pin-compatible with other Zilker Labs devices such as ZL2005 or ZL2008. While it shares the Digital-DC bus protocol and PMBus command set for interoperability, its 36-pin QFN footprint, pin assignments (e.g., VTRK, MGN, FC), and internal regulator structure are unique to the ZL2106 family and optimized for 6A operation.
ZL2106ALCNT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 36-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5V
- Current - Output:
- 6A
- Frequency - Switching:
- 200kHz ~ 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 36-TQFN (6x6)
ZL2106ALCNT FAQ
1.How can I place an order for ZL2106ALCNT through Aetrix?
Please submit a Request for Quotation (RFQ) for ZL2106ALCNT 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 ZL2106ALCNT reliable?
The price and inventory of ZL2106ALCNT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZL2106ALCNT is usually 5 days.
3.What payment methods are accepted for ZL2106ALCNT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZL2106ALCNT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZL2106ALCNT?
ZL2106ALCNT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZL2106ALCNT 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 ZL2106ALCNT?
For technical support, including ZL2106ALCNT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZL2106ALCNT requirements.
6.How does Aetrix verify that ZL2106ALCNT is sourced from the original manufacturer or authorized distributors?
All ZL2106ALCNT 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 ZL2106ALCNT meets industry standards.
7.What is the process for return or replacement of ZL2106ALCNT?
All ZL2106ALCNT units undergo pre-shipment inspection (PSI). If there is an issue with ZL2106ALCNT, 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 ZL2106ALCNT part is unused and in its original packaging.
Return procedure for ZL2106ALCNT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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