Power Manager II - POWR1220AT8

The Power Manager II ispPAC-POWR1220AT8 monitors up to 12 circuit board power supplies, provides up to 20 open-drain digital outputs, and 8 DC-DC trim/margin outputs. The device can generate signals such as a CPU Reset, including pulse stretching and power supply fault interrupt, using the on-chip 48 macrocell CPLD and four programmable timers. Four of the 20 outputs can be configured as high-voltage MOSFET drivers. There are also six general-purpose digital inputs, which can be used for other control functions.

The Power Manager II ispPAC-POWR1220AT8 offers a superior solution for power supply monitoring, trimming and voltage measurement. This programmable device replaces multiple ICs, including reset generators, supervisor ICs, watchdog timers, sequencing/tracking and hot-swap ICs.

• Key Features
• Typical Application
• Evaluation Board

Please select a document category from the selection on the left-hand side of this page for more information on the ispPAC-POWR1220AT8.

Block Diagram

Key Features

• Monitor, Control, and Margin Multiple Power Supplies
  
  • Simultaneously monitors up to 12 power supplies
  • Provides up to 20 output control signals
  • Provides up to eight analog outputs for margining/trimming power supply voltages
  • Programmable digital and analog circuitry
• Power Supply Margin and Trim Functions
  • Trim and margin up to eight power supplies
  • Dynamic voltage control through I²C
  • Four hardware selectable voltage profiles
  • Independent Digital Closed-Loop Trim function
    for each output
• Embedded PLD for Sequence Control
  • 48-macrocell CPLD implements both state
    machines and combinatorial logic functions
• Embedded Programmable Timers
  • Four independent timers
  • 32μs to 2 second intervals for timing sequences
• Analog Input Monitoring
  • 12 independent analog monitor inputs
  • Differential inputs for remote ground sense
  • Two programmable threshold comparators per
    analog input
  • Hardware window comparison
  • 10-bit ADC for I²C monitoring
• High-Voltage FET Drivers
  
  • Power supply ramp up/down control
  • Programmable current and voltage output
  • Independently configurable for FET control or digital output

• 2-Wire (I²C/SMBus™ Compatible) Interface
  
  • Comparator status monitor
  • ADC readout
  • Direct control of inputs and outputs
  • Power sequence control
  • Dynamic trimming/margining control

• 3.3V Operation, Wide Supply Range 2.8V to 3.96V
  
  • In-system programmable through JTAG
  • Industrial temperature range: -40°C to +85°C
  • 100-pin TQFP package, lead free option

Typical Application

The Power Manager II POWR1220AT8 provides a standard command interface to the IPMC while performing FRU specific payload power management functions using the on-chip CPLD. The POWR1220AT8 also converts all on board DC-DC converters into accurate digitally controlled supplies.

Download Power Manager II and ispClock Application Examples Brochure

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Evaluation Board

The PAC-POWR1220AT8 evaluation board allows the designer to quickly configure and evaluate the ispPAC-POWR1220AT8, ispPAC-POWR1014, ispPAC-POWR1014A and ispPAC-POWR6AT6 device on a fully assembled printed-circuit board.

The ispPAC-POWR1220AT8 Evaluation Board includes ispPAC-POWR1220AT8, Power Manager II, 100-pin TQFP package 35mm slide pots to emulate supply rail variations Pads for user I/O, LED, and switches JTAG and I2C interface headers ispDOWNLOAD Cable (HW-DLN-3C) AC adapter with international plugs Programmable with PAC-Designer and ispVM System software