Overview
The Texas Instruments UCD90320ZWSR is a 32-rail PMBus™ addressable power sequencer and system manager. This device is designed to sequence, monitor, and margin 24 voltage rails and 8 digital rails, making it highly versatile for complex power management systems. It is packaged in a compact 0.8-mm pitch BGA package, making it suitable for space-constrained applications. The UCD90320ZWSR is equipped with advanced features such as high-accuracy closed-loop margining, active trim function for improved rail output voltage accuracy, and nonvolatile event logging for system debugging.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Package Type | 169-NFBGA (12x12 mm) | - |
| Supply Voltage (V33D) | 3.15 to 3.63 V | - |
| Supply Voltage (V33A) | 2.97 to 3.63 V | - |
| Operating Ambient Temperature | -40 to 85 °C | - |
| Operating Junction Temperature | -40 to 93 °C | - |
| GPIO Pins | 84 pins (including 32 ENx, 24 MARx, 16 LGPOx, 8 DMONx, and 32 GPIs) | - |
| ADC Channels | 24 integrated ADC channels (AMONx) | - |
| Thermal Resistance (θJA) | 41.6 °C/W | - |
Key Features
- Sequence, monitor, and margin 24 voltage rails plus 8 digital rails.
- Monitor and respond to OV, UV, OC, UC, temperature, time-out, and GPI-triggered faults.
- Flexible sequence-on and off dependencies, delay time, Boolean logic, and GPIO configuration.
- Four rail profiles for adaptive voltage identification (AVID) voltage regulator.
- High-accuracy closed-loop margining and active trim function for improved rail output voltage accuracy.
- Advanced nonvolatile event logging, including single-event fault log, peak value log, and black box fault log.
- Easily cascade up to 4 power sequencers for coordinated fault responses.
- Programmable watchdog timer and system reset.
- Pin-selected rail state and PMBus™ 1.2 compliance.
- Dual-bank configurations for fail-safe state during programming.
Applications
- Wired networking and wireless infrastructure.
- Datacom modules and data center and enterprise computing.
- Factory automation and control systems.
- Test and measurement equipment.
- Medical devices.
Q & A
- What is the primary function of the UCD90320ZWSR?
The UCD90320ZWSR is a 32-rail PMBus™ addressable power sequencer and system manager, designed to sequence, monitor, and margin voltage and digital rails.
- What types of faults can the UCD90320ZWSR monitor and respond to?
The device can monitor and respond to overvoltage (OV), undervoltage (UV), overcurrent (OC), undercurrent (UC), temperature, time-out, and GPI-triggered faults.
- How many GPIO pins does the UCD90320ZWSR have and what are their functions?
The device has 84 GPIO pins, which include 32 ENx pins for enabling power supplies, 24 MARx pins for margining, 16 LGPOx pins for logical GPO, 8 DMONx pins for digital monitoring, and 32 GPIs for cascading and system functions.
- What is the purpose of the nonvolatile event logging feature?
The nonvolatile event logging feature preserves fault events after power dropout, including single-event fault logs, peak value logs, and black box fault logs to assist in system debugging.
- Can the UCD90320ZWSR be cascaded with other devices?
Yes, the device can be cascaded with up to 4 power sequencers to manage up to 128 voltage rails through a single SYNC_CLK pin connection.
- What software is used to configure and monitor the UCD90320ZWSR?
The TI Fusion Digital Power™ designer software is used to configure, store, and monitor all system operating parameters via a PMBus interface.
- What is the operating temperature range of the UCD90320ZWSR?
The operating ambient temperature range is -40 to 85 °C, and the operating junction temperature range is -40 to 93 °C.
- What is the thermal resistance (θJA) of the UCD90320ZWSR?
The junction-to-ambient thermal resistance (θJA) is 41.6 °C/W.
- What are the key applications of the UCD90320ZWSR?
The device is used in wired networking, wireless infrastructure, datacom modules, data center and enterprise computing, factory automation, test and measurement, and medical devices.
- What is the significance of the PMBus 1.2 compliance in the UCD90320ZWSR?
PMBus 1.2 compliance allows for standardized communication and control over the power management bus, enabling easier integration and management of power supplies.
