isppac-powr1220at8 Lattice Semiconductor Corp., isppac-powr1220at8 Datasheet

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isppac-powr1220at8

Manufacturer Part Number
isppac-powr1220at8
Description
In-system Programmable Power Supply Monitoring, Sequencing And Margining Controller
Manufacturer
Lattice Semiconductor Corp.
Datasheet

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June 2008
Features
■ Monitor, Control, and Margin Multiple
■ Power Supply Margin and Trim Functions
■ Embedded PLD for Sequence Control
■ Embedded Programmable Timers
■ Analog Input Monitoring
■ High-Voltage FET Drivers
■ 2-Wire (I
■ 3.3V Operation, Wide Supply Range 2.8V to
© 2008 Lattice Semiconductor Corp. All Lattice trademarks, registered trademarks, patents, and disclaimers are as listed at www.latticesemi.com/legal. All other
brand or product names are trademarks or registered trademarks of their respective holders. The specifications and information herein are subject to change without
notice.
www.latticesemi.com
Power Supplies
3.96V
• Simultaneously monitors up to 12 power
• Provides up to 20 output control signals
• Provides up to eight analog outputs for
• Programmable digital and analog circuitry
• Trim and margin up to eight power supplies
• Dynamic voltage control through I
• Four hardware selectable voltage profiles
• Independent Digital Closed-Loop Trim function
• 48-macrocell CPLD implements both state
• Four independent timers
• 32µs to 2 second intervals for timing sequences
• 12 independent analog monitor inputs
• Differential inputs for remote ground sense
• Two programmable threshold comparators per
• Hardware window comparison
• 10-bit ADC for I
• Power supply ramp up/down control
• Programmable current and voltage output
• Independently configurable for FET control or
• Comparator status monitor
• ADC readout
• Direct control of inputs and outputs
• Power sequence control
• Dynamic trimming/margining control
• In-system programmable through JTAG
• Industrial temperature range: -40°C to +85°C
• 100-pin TQFP package, lead-free option
supplies
margining/trimming power supply voltages
for each output
machines and combinatorial logic functions
analog input
digital output
2
C/SMBus™ Compatible) Interface
2
C monitoring
2
C
Monitoring, Sequencing and Margining Controller
ispPAC-POWR1220AT8
1-1
Application Block Diagram
Description
Lattice’s Power Manager II ispPAC-POWR1220AT8 is a
general-purpose power-supply monitor, sequence and
margin controller, incorporating both in-system pro-
grammable logic and in-system programmable analog
functions implemented in non-volatile E
nology. The ispPAC-POWR1220AT8 device provides 12
independent analog input channels to monitor up to 12
power supply test points. Each of these input channels
offers a differential input to support remote ground
sensing, and has two independently programmable
comparators to support both high/low and in-bounds/
out-of-bounds (window-compare) monitor functions. Six
general-purpose digital inputs are also provided for mis-
cellaneous control functions.
The ispPAC-POWR1220AT8 provides 20 open-drain
digital outputs that can be used for controlling DC-DC
converters, low-drop-out regulators (LDOs) and opto-
couplers, as well as for supervisory and general-pur-
pose logic interface functions. Four of these outputs
Primary
Primary
Primary
Primary
Primary
Supply
Supply
Supply
Supply
Supply
ispPAC-POWR1220AT8
In-System Programmable Power Supply
POL#N
POL#1
3.3V
2.5V
1.8V
Power Supply
Control Block
ADC
Margin/Trim
®
8 Analog
Outputs
Trim
4 Timers
16 Digital
Outputs
6 Digital
Inputs
48 Macrocells
83 Inputs
CPLD
Other Control/Supervisory
4 MOSFET
Interface
Drivers
I
2
C
Data Sheet DS1015
Signals
2
CMOS
Bus
I
DS1015_01.5
2
C
CPU
®
tech-

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