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Analog Devices Inc. ADP1046ACPZ-R7
- Part No.:
- ADP1046ACPZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Power Supply Controllers, Monitors
- Package:
- 32-WFQFN Exposed Pad, CSP
- Datasheet:
-
ADP1046ACPZ-R7.pdf
- Description:
- IC DGTL 2NDRY SIDE CTRLR 32LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,098
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Product details
Overview
ADP1046ACPZ-R7 from Analog Devices is a digital secondary-side PWM controller for isolated AC/DC and DC/DC power supplies, featuring 7 programmable PWM outputs (OUTA–OUTD, OUTAUX, SR1, SR2), integrated digital PID loop filter, I²C interface, and EEPROM-based configuration storage. It supports synchronous rectification, current sharing, OrFET control, and operates from a single 3.3 V supply across −40°C to +125°C. Used in server and telecom redundant power systems.
For engineers reviewing the ADP1046ACPZ-R7 datasheet, ADP1046ACPZ-R7 pinout, ADP1046ACPZ-R7 application, or ADP1046ACPZ-R7 equivalent, key selection criteria include its dual ADC voltage sense architecture (fast coarse + slow accurate), programmable dead time, 12-bit current/voltage measurement accuracy, and support for resonant mode operation with adjustable timing.
Technical Context
The ADP1046ACPZ-R7 implements a digital control loop using a multipath ADC architecture: one fast/low-resolution path (7-bit OVP/UVP response in ≤80 µs) and one slow/high-resolution path (12-bit measurement at 10 ms update rate). Its digital PID filter is fully programmable via I²C and stored in on-chip EEPROM.
It integrates seven PWM outputs with independent timing control, synchronous rectifier drivers (SR1/SR2), OrFET gate control (GATE), and a dedicated current share bus (SHAREi/SHAREo). Voltage line feedforward (via ACSNS) and volt-second balance monitoring are implemented in hardware for improved transient response in LLC and phase-shifted full-bridge topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.0 V to 3.6 V - powers all digital core, ADCs, and I²C interface; requires 4.7 µF AGND decoupling. |
| Digital Core Clock | 200 MHz PLL (±5%) - enables high-speed loop execution and real-time protection response. |
| Voltage Sense ADC | 12-bit resolution, ±2% FSR accuracy (10–90% range) - supports precise remote/local output regulation with VS1/VS2/VS3 inputs. |
| Current Sense Accuracy | CS1: ±3% FSR (10–50% range); CS2: ±2.1% FSR (0–110 mV) - enables accurate load-current monitoring and OCP triggering. |
| OVP/UVP Response | 80 µs fast comparator latency (VS1/VS2/VS3) - meets strict safety requirements for overvoltage shutdown in <100 µs. |
| I²C Interface | Standard/Fast Mode (10–400 kHz), 7-bit address - allows telemetry, calibration, and real-time fault logging without external MCU. |
| EEPROM Endurance | 10,000 write cycles at 85°C - stores full configuration (loop filters, trim values, soft-start, protections) for standalone operation. |
Pinout & Package
ADP1046ACPZ-R7 is housed in a 32-lead, 5 mm × 5 mm LFCSP package with exposed thermal pad (EP). Pin count and layout match ADP1043A for drop-in replacement in existing designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VS1 / VS2 / VS3+ | High-accuracy voltage sense inputs | Support differential (VS3+/-) and single-ended (VS1/VS2) feedback; enable remote sensing and multi-rail monitoring. |
| CS1 / CS2+ / CS2− | Primary/secondary current sense inputs | CS1: single-ended primary-side current; CS2: differential secondary-side current with 120 mV full-scale range. |
| OUTA–OUTD, OUTAUX | PWM output drivers | Seven logic-level outputs drive external gate drivers; each configurable for frequency, duty, dead time, and phase. |
| SR1 / SR2 | Synchronous rectifier control | Optimized for low-latency SR FET timing; support burst-mode light-load operation. |
| GATE | OrFET control output | Drives N-channel MOSFET for hot-swap/N+1 redundancy; includes fast OCP detection and latch-off. |
| SHAREi / SHAREo | Current share bus interface | Enables master-slave paralleling of multiple ADP1046ACPZ-R7-controlled PSUs with <±1% current matching. |
| SDA / SCL | I²C bidirectional interface | Provides full register access, telemetry readback, and EEPROM programming without host processor dependency. |
| RTD | Temperature sensor input | Connects to NTC thermistor; internal 46 µA current source enables ±5°C accuracy from 100°C to 125°C. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-path ADC architecture | Combines 7-bit fast comparator (≤80 µs OVP) and 12-bit precision ADC (10 ms update) for both safety-critical response and stable regulation. |
| Programmable digital PID filter | Configurable via I²C and stored in EEPROM; eliminates external compensation components and enables post-production tuning. |
| Voltage line feedforward (ACSNS) | Measures input AC line ripple to proactively adjust PWM duty cycle, reducing output voltage deviation during line transients. |
| Resonant mode support | Hardware-assisted timing control for LLC and phase-shifted topologies, including frequency limit setting and burst-mode light-load optimization. |
| Standalone EEPROM operation | Stores full configuration (trim, soft start, protections, loop settings); enables boot-up without host MCU or firmware initialization. |
Applications
| Server Power Supply | Telecom Rectifier |
|---|---|
Use Scenario: 12 V/48 V isolated DC-DC module in 1U rack-mounted server PSU with N+1 redundancy. IC Role / Device Role / Timing Role: Secondary-side digital controller managing synchronous rectification, current sharing, and OrFET hot-swap sequencing. Use Value: Enables <±1% current matching across parallel modules and <100 µs OVP shutdown-critical for high-availability data center infrastructure. | Use Scenario: -48 V telecom rectifier with active PFC front-end and isolated LLC resonant converter stage. IC Role / Device Role / Timing Role: Resonant mode controller with voltage feedforward and adaptive dead time for efficiency optimization across 20–100% load. Use Value: Achieves >95% peak efficiency and <1% output voltage deviation during 50–100 VAC line dips due to real-time feedforward compensation. |
| Industrial Redundant PSU | Network Equipment Power |
Use Scenario: Dual-redundant 24 V/5 A power system for programmable logic controller (PLC) backplane with hot-swap capability. IC Role / Device Role / Timing Role: OrFET gate driver and current share manager ensuring seamless failover between primary and backup units. Use Value: Guarantees <500 ns switchover latency and zero output droop during unit replacement-meeting IEC 61000-4-29 immunity requirements. | Use Scenario: Compact 3.3 V/12 A point-of-load regulator in 10G Ethernet switch line card with tight thermal constraints. IC Role / Device Role / Timing Role: Local voltage sense (VS2) and temperature monitoring (RTD) controller with embedded thermal derating logic. Use Value: Maintains ±1% output regulation while dynamically throttling output current above 105°C-preventing thermal runaway in sealed chassis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital secondary-side controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADP1043ACPZ-R7 | Lacks voltage feedforward, fixed dead time, no resonant mode support; identical pinout and EEPROM structure. | Suitable for simpler forward/flyback topologies where line regulation is less critical. | Select when cost sensitivity outweighs need for feedforward or resonant operation. |
| UCC28950PWPR | Analog TI device; analog PWM with digital configurability; no integrated ADCs or EEPROM; requires external microcontroller for telemetry. | Better suited for legacy designs requiring analog loop tuning and minimal firmware dependency. | Choose if existing design uses TI ecosystem and requires analog loop stability analysis tools. |
Compared with ADP1046ACPZ-R7, ADP1043ACPZ-R7 offers pin compatibility but omits feedforward and resonant enhancements, while UCC28950PWPR trades integrated digital intelligence for analog flexibility and external control dependency-making ADP1046ACPZ-R7 optimal for new high-efficiency, software-configurable isolated PSUs.
Availability
ADP1046ACPZ-R7 is available at Aetrix Electronics and suitable for server power supplies, telecom rectifiers, and industrial redundant power systems requiring stable component supply, long-term lifecycle support, and qualified automotive-grade reliability.
Supply support for ADP1046ACPZ-R7 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The ADP1046ACPZ-R7 belongs to Analog Devices' Digital Power Controller product line, designed specifically to replace analog PWM ICs in isolated secondary-side power conversion with field-programmable, telemetry-enabled, and self-calibrating digital control.
FAQ
What is the operating temperature range for the ADP1046ACPZ-R7?
The ADP1046ACPZ-R7 is specified to operate from −40°C to +125°C ambient temperature. Its internal RTD interface and OTP circuitry provide accurate thermal monitoring across this full range, with ±5°C reading accuracy from 100°C to 125°C when using a 100 kΩ NTC thermistor and proper external resistor network. This makes ADP1046ACPZ-R7 suitable for high-density server and industrial power applications where thermal margins are tight.
Does the ADP1046ACPZ-R7 require an external microcontroller to function?
No, the ADP1046ACPZ-R7 does not require an external microcontroller to function. Its on-chip 8 kB EEPROM stores all configuration parameters-including digital PID coefficients, soft-start timing, protection thresholds, and calibration data-enabling fully autonomous startup and operation. The I²C interface is optional and used only for development, telemetry, or runtime reconfiguration; ADP1046ACPZ-R7 retains full functionality without host intervention.
How many PWM outputs does the ADP1046ACPZ-R7 support, and what are their roles?
The ADP1046ACPZ-R7 supports seven programmable PWM outputs: OUTA, OUTB, OUTC, OUTD, OUTAUX, SR1, and SR2. OUTx signals drive primary-side gate drivers in forward, flyback, or half/full-bridge topologies; SR1/SR2 control synchronous rectifier FETs on the secondary side; OUTAUX provides auxiliary timing for auxiliary rails or housekeeping functions. All outputs feature independent dead time, phase, and frequency control-enabling complex multi-phase and resonant configurations.
Can the ADP1046ACPZ-R7 be used in resonant converter topologies like LLC?
Yes, the ADP1046ACPZ-R7 explicitly supports resonant mode operation, including LLC and phase-shifted full-bridge topologies. It provides dedicated registers for frequency limiting, PWM timing adjustment, synchronous rectification timing in burst mode, and feedback control adaptation. The hardware-accelerated volt-second balance monitoring and ACSNS-based line feedforward further enhance stability and efficiency in variable-frequency resonant designs-capabilities confirmed in the ADP1046 Rev. B datasheet Sections 25–27.
What protection features are integrated into the ADP1046ACPZ-R7?
The ADP1046ACPZ-R7 integrates comprehensive hardware- and firmware-based protections: overvoltage (OVP), undervoltage (UVP), overcurrent (OCP), overtemperature (OTP), ground continuity monitoring, and AC sense fault detection. Each has programmable thresholds, debounce times, and response actions (latch-off, auto-retry, flag-only). Fast OCP triggers in ≤100 ns (CS1) and ≤150 ns (CS2), while OVP responds in ≤80 µs-ensuring compliance with IEC/UL safety standards. All protections are configurable and stored in EEPROM for consistent behavior across power cycles.
ADP1046ACPZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Applications:
- Power Supplies
- Voltage - Input:
- 0V ~ 1.6V
- Voltage - Supply:
- 3V ~ 3.6V
- Current - Supply:
- 20 mA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-LFCSP-WQ (5x5)
ADP1046ACPZ-R7 FAQ
1.How can I place an order for ADP1046ACPZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1046ACPZ-R7 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 ADP1046ACPZ-R7 reliable?
The price and inventory of ADP1046ACPZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1046ACPZ-R7 is usually 5 days.
3.What payment methods are accepted for ADP1046ACPZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1046ACPZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1046ACPZ-R7?
ADP1046ACPZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1046ACPZ-R7 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 ADP1046ACPZ-R7?
For technical support, including ADP1046ACPZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1046ACPZ-R7 requirements.
6.How does Aetrix verify that ADP1046ACPZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADP1046ACPZ-R7 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 ADP1046ACPZ-R7 meets industry standards.
7.What is the process for return or replacement of ADP1046ACPZ-R7?
All ADP1046ACPZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1046ACPZ-R7, 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 ADP1046ACPZ-R7 part is unused and in its original packaging.
Return procedure for ADP1046ACPZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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