Lattice’s Power Manager II ISPPAC-POWR6AT6-01N32I is a general-purpose power-supply monitoring and margining controller, incorporating in-system programmable analog functions implemented in non-volatile E2 CMOS® technology. The ISPPAC-POWR6AT6-01N32I device provides six independent analog input channels to monitor up to six power supply test points. Each of these input channels offers a differential input to support remote ground sensing.
The ISPPAC-POWR6AT6-01N32I incorporates six DACs for generating a trimming voltage to control the output voltage of a power supply. The trimming voltage can be set to four hardware selectable preset values (voltage profiles) or can be dynamically loaded in to the DAC through the I 2 C bus. Additionally, each power supply output voltage can be maintained typically within 0.5% tolerance across various load conditions using the Digital Closed Loop Control mode. The operating voltage profile can be selected using external hardware pins.
The on-chip 10-bit A/D converter can both be used to monitor the VMON voltage through the I2 C bus as well as for implementing digital closed loop mode for maintaining the output voltage of all power supplies controlled by the monitoring and trimming section of the ispPACPOWR6AT6 device.
The I2 C bus/SMBus interface allows an external microcontroller to measure the voltages connected to the VMON analog monitor inputs and load the DACs for the generation of the trimming voltages of the external DCDC converters.
Feature
■ Power Supply Margin and Trim Functions
• Trim and margin up to six power supplies
• Dynamic voltage control through I2 C
• Four hardware selectable voltage profiles
• Independent Digital Closed-Loop Trim function for each output
■ Analog Input Monitoring
• Six analog monitor inputs
• Differential input architecture for accurate remote ground sensing
• 10-bit ADC for direct voltage measurements
■ 2-Wire (I2 C/SMBus™ Compatible) Interface
• Readout of the ADC
• Dynamic trimming/margining control
■ Other Features
• Programmable analog circuitry
• Wide supply range, 2.8V to 3.96V
• In-system programmable through JTAG
• Industrial temperature range: -40°C to +85°C
• 32-pin QFN package, only 5mm x 5mm, leadfree option
(Picture: Pinout)
