My Inquiry
My Account
Analog Devices Inc. ADP1055ACPZ-RL
- Part No.:
- ADP1055ACPZ-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Power Supply Controllers, Monitors
- Package:
- 32-WFQFN Exposed Pad, CSP
- Datasheet:
-
ADP1055ACPZ-RL.pdf
- Description:
- IC DGTL PWR MGMT 32LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,745
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADP1055ACPZ-RL from Analog Devices is a digital secondary-side power supply controller with PMBus 1.2 interface, 6-channel PWM generation (625 ps resolution), programmable digital PID+zero/pole compensation, and dual current-sense capability for primary/secondary overcurrent protection. It targets isolated DC-DC converters requiring remote voltage sense, synchronous rectifier control, and redundant OVP in telecom and server power modules.
For engineers reviewing the ADP1055ACPZ-RL datasheet, ADP1055ACPZ-RL pinout, ADP1055ACPZ-RL application, or ADP1055ACPZ-RL equivalent, key selection criteria include its 32-lead LFCSP package, 48 kHz–1 MHz switching frequency range, 64 PMBus address options, 3.3 V single-supply operation, and integrated EEPROM for loop filter and sequencing configuration.
Technical Context
The ADP1055ACPZ-RL implements a fully digital control architecture with dual ADC paths: a 12-bit high-speed flash ADC for VS+/VS− voltage sensing (10.5 ms update) and separate 12-bit ADCs for CS1 (primary current) and CS2± (secondary differential current). Its digital compensator supports CCM/DCM mode-specific loop filters and nonlinear gain for DCM-to-CCM transient response.
It integrates six PWM outputs (OUTA–OUTD, SR1, SR2) with adaptive dead-time compensation, synchronized switching via SYNC pin (50–1000 kHz external clock), and black-box fault recording with extended telemetry. Protection logic includes fast-cycle-by-cycle OCP on both sides, diode-emulation reverse current detection, and programmable OVP/UVP thresholds with configurable debounce.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 48 kHz to 1 MHz - enables optimization for efficiency vs. size in isolated topologies like LLC or phase-shifted full-bridge. |
| PWM Resolution | 625 ps - allows fine-grained duty cycle control for precise regulation and adaptive dead-time tuning. |
| Digital Compensation | Programmable PID + additional pole/zero - supports custom loop shaping for stable operation across load/line/temp variations. |
| Current Sensing | Dual-path: CS1 (single-ended, 12-bit) and CS2± (differential, 12-bit, 30/60/480 mV ranges) - enables accurate primary and secondary side current monitoring. |
| PMBus Interface | Revision 1.2 compliant with PEC, 64 address options, 32-bit password protection - ensures secure, standardized telemetry and configuration in multi-rail systems. |
| Operating Temperature | −40°C to +125°C - qualified for industrial and telecom base station environments with high ambient thermal stress. |
| Package | 32-lead LFCSP (5 mm × 5 mm, 0.5 mm pitch) - compact footprint with exposed pad for thermal performance in high-power density designs. |
Pinout & Package
The ADP1055ACPZ-RL is housed in a 32-lead Lead Frame Chip Scale Package (LFCSP) with an exposed thermal pad. This RoHS-compliant package supports reflow soldering per JEDEC J-STD-020 and provides θJA = 44.4°C/W for thermal management in high-current applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OVP | Redundant overvoltage protection input | Monitors output rail via resistor divider; triggers fast shutdown if threshold exceeded (factory-trimmed ±1.5% at 1.206 V). |
| VS+, VS− | Differential remote voltage sense inputs | Enable precise output regulation by measuring at load point; require ≤0.5% resistor tolerance for trimming accuracy. |
| CS2+, CS2− | Differential secondary current sense inputs | Support bidirectional sensing for reverse current protection in synchronous rectifier mode with diode emulation. |
| CS1 | Primary-side current sense input | Single-ended analog input for cycle-by-cycle primary OCP; 12-bit ADC with ±2.5% FSR accuracy over full range. |
| VFF | Voltage feedforward input | Provides line-voltage feedforward for improved transient response; accepts 0.6–1.6 V input with 12-bit resolution and ±2.0% FSR accuracy. |
| OUTA–OUTD, SR1, SR2 | PWM output drivers | Six independent gate drive outputs with 0.8 V low / VDD−0.8 V high levels; support adaptive dead-time and soft-start sequencing. |
| SYNC | External frequency synchronization input | Accepts 50–1000 kHz clock; enables interleaving or noise reduction in multi-controller systems with ±10% fSW tracking. |
| ISHARE | Digital current sharing bus | Enables droop-based or master-slave current sharing between multiple ADP1055ACPZ-RL units in parallel power supplies. |
| SDA, SCL | PMBus I²C interface pins | Support standard/fast-mode I²C (10–400 kHz); include PEC, alert response, and 10-bit addressing per PMBus 1.2 spec. |
| GPIO1–GPIO4 | General-purpose I/O | Configurable as digital I/O or active-clamp snubber PWMs; support programmable timing and fault-triggered actions. |
Key Features
| Feature | Design Value |
|---|---|
| Digital control loop with programmable PID + pole/zero | Enables real-time loop tuning without hardware changes; supports CCM/DCM/low-temp filter profiles stored in EEPROM. |
| Extended black box data recorder | Captures pre-fault telemetry (voltage, current, temperature, register state) for root-cause analysis of intermittent failures. |
| Adaptive dead time compensation | Adjusts SR1/SR2 turn-on timing dynamically to minimize body-diode conduction loss and improve light-load efficiency. |
| Secondary side averaged reverse current protection | Uses diode emulation mode with fixed debounce to prevent reverse energy flow during light-load burst-mode operation. |
| Nonlinear gain for DCM-to-CCM transition | Accelerates transient response when crossing conduction modes-critical for dynamic load steps in CPU/GPU VRMs. |
Applications
| Telecom Rectifier Modules | Server PSU Redundancy |
|---|---|
Use Scenario: 48 V input, 12 V/54 A isolated DC-DC conversion in distributed power architecture with hot-swap capability. IC Role / Device Role / Timing Role: Secondary-side digital controller managing synchronous rectification, current sharing, and PMBus telemetry for system-level power management. Use Value: Enables precise output regulation under dynamic load (0–100% step) with <10 µs OCP response and black-box fault logging for field reliability analysis. | Use Scenario: N+1 redundant 1 kW AC-DC front-end with parallel-connected secondary controllers coordinating load balancing. IC Role / Device Role / Timing Role: Digital controller executing droop-based current sharing via ISHARE pin and synchronized soft-start to prevent inrush imbalance. Use Value: Achieves <±3% current mismatch across modules at full load using programmable droop gain and real-time telemetry feedback. |
| Industrial PLC Power Supplies | Medical Imaging Power Systems |
Use Scenario: 24 V isolated output with remote sense and redundant OVP for programmable logic controller backplanes operating at −40°C to +70°C. IC Role / Device Role / Timing Role: Secondary-side controller implementing dual OVP (OVP pin + VS comparator), UVLO, and external OTP via JTD sensor. Use Value: Meets IEC 61000-4-5 surge immunity requirements through fast (<80 ns) OVP response and checksum-protected EEPROM configuration. | Use Scenario: High-stability ±15 V and +5 V rails for CT/MRI detector bias supplies requiring <0.1% output drift over 8-hour imaging sessions. IC Role / Device Role / Timing Role: Digital controller performing continuous voltage trim calibration and temperature-compensated loop adjustment via JTD feedback. Use Value: Maintains <±0.05% output accuracy over temperature using factory-trimmed ADCs and 14-bit JTD temperature sensing (±9.7°C error from 25–125°C). |
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 |
|---|---|---|---|
| UCC28950RTWR | Analog controller with digital enhancements; no PMBus, no EEPROM, fixed compensation; 100–1000 kHz freq range. | Lacks telemetry, remote configuration, and black-box logging; suited for cost-sensitive, non-networked systems. | Choose UCC28950RTWR only if PMBus telemetry, field-upgradable firmware, or fault forensics are unnecessary. |
| ISL68201IRAZ-T7A | Dual-output digital multiphase controller; supports up to 4 phases per rail; integrated MOSFET drivers; 3.3 V supply. | Targeted at CPU/GPU VRMs-not isolated DC-DC; lacks VS+/VS− differential sense and redundant OVP architecture. | Select ISL68201IRAZ-T7A for high-current, low-voltage multiphase loads where isolation and secondary-side topology control are not required. |
Compared with UCC28950RTWR and ISL68201IRAZ-T7A, the ADP1055ACPZ-RL uniquely combines isolated secondary-side control, full PMBus 1.2 compliance, dual-path current sensing, and black-box fault capture-making it the only option for telecom/server PSUs requiring certified telemetry, redundancy, and post-deployment diagnostics.
Availability
ADP1055ACPZ-RL is available at Aetrix Electronics and suitable for telecom rectifier modules, server PSU redundancy systems, and industrial PLC power supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ADP1055ACPZ-RL 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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, power management, and industrial systems.
The ADP1055ACPZ-RL belongs to Analog Devices' digital power controller product line, designed specifically for isolated secondary-side regulation in high-efficiency, high-reliability AC-DC and DC-DC power supplies with embedded telemetry and fault diagnostics.
FAQ
What is the operating voltage range for the ADP1055ACPZ-RL's VDD supply?
The ADP1055ACPZ-RL operates from a single 3.3 V supply with a specified range of 3.0 V to 3.6 V. A 4.7 μF capacitor must be connected between VDD and AGND for stable operation. The device draws 63 mA typical supply current during normal operation with CTRL pin high, and includes undervoltage lockout (UVLO) at 2.75–2.97 V and overvoltage lockout (OVLO) at 3.8–4.1 V to protect internal circuitry.
Does the ADP1055ACPZ-RL support both primary and secondary side overcurrent protection?
Yes, the ADP1055ACPZ-RL provides comprehensive overcurrent protection on both sides: primary-side cycle-by-cycle fast OCP via the CS1 pin (40–80 ns latency), and secondary-side fast OCP plus averaged reverse current protection using diode emulation mode on CS2± inputs. Accurate OCP response times are 10.5 ms for CS1 and 2.6 ms for CS2, with programmable thresholds and debounce settings.
How does the ADP1055ACPZ-RL implement voltage feedforward, and what is its accuracy?
The ADP1055ACPZ-RL uses the VFF pin for voltage feedforward with two modes: slow (1.56 MHz ADC clock, 10.5 ms update) and fast (1 μs sampling period). Input range is 0.6–1.6 V with ±2.0% FSR accuracy across 10–90% of usable range. Factory trimming at 1.0 V ensures ±1.5% FSR accuracy from 0.9–1.1 V, directly improving line-transient response in isolated converters.
Can the ADP1055ACPZ-RL synchronize switching frequency with an external clock source?
Yes, the ADP1055ACPZ-RL supports external frequency synchronization via the SYNC pin, accepting input clocks from 50 kHz to 1000 kHz. It tracks the external frequency within ±10% of the programmed switching frequency (set in Register 0x33) and features a minimum 40 ns on-pulse requirement. This enables noise reduction in multi-rail systems and interleaved operation across parallel power stages.
What type of EEPROM is integrated into the ADP1055ACPZ-RL, and what are its endurance specifications?
The ADP1055ACPZ-RL integrates 8 kB of on-chip EEPROM for storing loop filter coefficients, PWM timing, soft-start sequences, and safety configurations. It is rated for 10,000 write cycles at TJ = 85°C and 1,000 cycles at TJ = 125°C per JEDEC A117, with 20-year data retention at 85°C and 15 years at 125°C. All writes include CRC checksum validation to ensure configuration integrity.
ADP1055ACPZ-RL 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 Supply Controller/Monitor
- Voltage - Input:
- 0V ~ 1.6V
- Voltage - Supply:
- 3V ~ 3.6V
- Current - Supply:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-LFCSP (5x5)
ADP1055ACPZ-RL FAQ
1.How can I place an order for ADP1055ACPZ-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1055ACPZ-RL 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 ADP1055ACPZ-RL reliable?
The price and inventory of ADP1055ACPZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1055ACPZ-RL is usually 5 days.
3.What payment methods are accepted for ADP1055ACPZ-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1055ACPZ-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1055ACPZ-RL?
ADP1055ACPZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1055ACPZ-RL 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 ADP1055ACPZ-RL?
For technical support, including ADP1055ACPZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1055ACPZ-RL requirements.
6.How does Aetrix verify that ADP1055ACPZ-RL is sourced from the original manufacturer or authorized distributors?
All ADP1055ACPZ-RL 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 ADP1055ACPZ-RL meets industry standards.
7.What is the process for return or replacement of ADP1055ACPZ-RL?
All ADP1055ACPZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with ADP1055ACPZ-RL, 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 ADP1055ACPZ-RL part is unused and in its original packaging.
Return procedure for ADP1055ACPZ-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADP1055ACPZ-RL Tags
-
UC3845AD8TR
Texas Instruments
-
UC2843AD8TR
Texas Instruments
-
LM3880MFX-1AE/NOPB
Texas Instruments
-
LM3880MFX-1AA/NOPB
Texas Instruments
-
INA234AIYBJR
Texas Instruments
-
INA700AYWFR
Texas Instruments
-
LM3880MF-1AE/NOPB
Texas Instruments
-
LM3880MF-1AA/NOPB
Texas Instruments
-
LM3881MM/NOPB
Texas Instruments
-
UCC2802DTR
Texas Instruments
-
NCP4305DMTTWG
onsemi
-
INA237AIDGSR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
