Lattice ISPPAC-POWR6AT6-01SN32I

A general-purpose power-supply monitoring and margining controller, incorporating in-system programmable analog functions implemented in non-volatile E²CMOS technology. The 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. It 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 into the DAC through the I²C bus. Additionally, each power supply output voltage can be maintained within 1% 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 I²C 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 device. The I²C 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.

• Trim and margin up to six power supplies
• Dynamic voltage control through I²C
• Four hardware selectable voltage profiles
• Independent Digital Closed-Loop Trim function for each output
• Six analog monitor inputs
• Differential input architecture for accurate remote ground sensing
• 10-bit ADC for direct voltage measurements
• Readout of the ADC
• Dynamic trimming/margining control
• 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 QFNS (Quad Flat-pack, No lead, Sawsingulated) package, only 5mm x 5mm, leadfree option