53290-028-010

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Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement. Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible. MICROPAC INDUSTRIES, INC. MICROCIRCUITS PRODUCTS DIVISION  905 E. Walnut St., Garland, TX 75040  (972) 272-3571  Fax (972) 494-2281 www.micropac.com E-MAIL: microsales@micropac.com 10-04-2013 Rev C Pg. 1 53290-028-010 28V DC INDUSTRIAL POWER CONTROLLER (IPC) Mii MICROCIRCUITS DIVISION Features:  Conformal coated open frame / PC Board design  Light weight – 200 grams  Operation temperature of -40ºC to +85ºC  SPST, normally open DC power control  MIL-STD-704E and MIL-STD-1760E compliant I 2T overload protected output with Switch Status Output  I 2c telemetry reporting of Switch voltage, current and base-plate temperature  Power MOSFET output with Low on-state resistance ABSOLUTE MAXIMUM RATINGS Notes:

1 Reversing output polarity may cause permanent damage

2 The (circuit breaker) I2t function immediately terminates surge currents per Figure 2 or 3. DESCRIPTION: This Isolated DC IPC is a low mass open construction DC switch intended for applications within an enclosure. In addition to load switching, the incorporated I 2T overload protection / fault protection provides a circuit breaker function. A status output signals output switch conditions of On / Off and Overload. An I 2c interface communicates switch voltage, current and base plate temperature. Transformer and opto-coupling isolate the output to all Control / Status and Data lines and base plate to 1,500 VDC. Power MOSFETs output switch provides soft start and low On voltage drop for cool operation. The Logic Control input operates from a bias supply of 18 to 32V. This IPC combines the functionality of a relay and circuit breaker. Output current is monitored for over-current with an I 2T trip curve. Fault currents beyond the I 2T trip limits are terminated instantly. Over-current conditions include Over-Load and Shorted Output during Turn-On. An open-collector Output Status is available to indicate the State of the Output Switch MOSFETs. The output remains blocked until the short is removed and the unit reset. Output Status is an Active Low for Control Off or Tripped condition and High into a pull up resistance for a (Control High) Normally On Output State. Controlling the IPC Off then back on resets a Tripped condition. Application:  28V 10A Power Switching

53290-028 DC INDUSTRIAL POWE R CONTROLLER (IPC) Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement. Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible. MICROPAC INDUSTRIES, INC. MICROCIRCUITS PRODUCTS DIVISION  905 E. Walnut St., Garland, TX 75040  (972) 272-3571  Fax (972) 494-2281 www.micropac.com E-MAIL: microsales@micropac.com 10-04-2013 Rev C Pg. 2 ELECTRICAL CHARACTERISTICS: TC = -40°C to 85°C unless specified. PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Output characteristics Operating Voltage *Intended system voltage 28 VDC Continuous blocking voltage Output device Rating 95 VDC Rated Output Current 270V system 10 ADC Output Current Shutdown 28V system (Figure 3) 12 15 18 ADC Load Start current for up to 100ms adjust range 28V system (Figure 3) 35 ADC Maximum On Stage Voltage drop 25 ⁰C @ 10A (phase 1) 0.45 VDC On-state resistance, Rds 25 ⁰C @ 10A (phase 1) 45 mOhms Turn-on time / Rise Time Figure 2 4.0/1.0 5.0/3.0 mS Turn-off time / Fall Time Figure 2 4.0/1.0 5.0/3.0 mS Maximum Off State leakage @ Continuous Blocking Voltage 200 A Snubbing Internal between output connections 3 uH Input characteristics CMOS configurations (Figure 1) Bias supply range, VDD MIL-STD-704A Compliant (50V peak) 18 28 32 VDC Bias current 80 90 mA Control voltage range -0.5 5.5 VDC Turn-on voltage Phase 1 2.9 VDC Turn-off voltage Phase 1 2.9 VDC Status Output Specification Trip Reset Time Remove overload & Cycle input 50 mS Status Supply Voltage (open Collector) MIL-STD-704A Compliant 32 VDC Status off leakage current VS = 15 VDC 4 µADC Status on voltage I STATUS = 5 MA @ 25ºC 0.4 VDC High-To-Low Transition Time I STATUS = 5 MA 20 50 µS General Specifications @ 25 ⁰C Dielectric withstanding Output to all Inputs and base 1,500 VDC Junction temperature 150 ºC Thermal resistance, JC 0.13 ºC/W Output Capacitance 30,000 pF Input to Output Capacitance 250 pF Data Communication I2c B / Phase 2 - 3 Address 4 bits / jumper programmable Data: Switch Voltage / Resolution 8.1 mV / BIT Switch Voltage / Accuracy ±5% Output Current / Resolution 5.9 mA / BIT Output Current / Accuracy ±5% Temperature / Resolution 0 ⁰C and above 0.0367⁰C ⁰C / BIT Temperature / Accuracy 2.0 ⁰C Mass 200 gram

53290-028 DC INDUSTRIAL POWE R CONTROLLER (IPC) Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement. Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible. MICROPAC INDUSTRIES, INC. MICROCIRCUITS PRODUCTS DIVISION  905 E. Walnut St., Garland, TX 75040  (972) 272-3571  Fax (972) 494-2281 www.micropac.com E-MAIL: microsales@micropac.com 10-04-2013 Rev C Pg. 3 NOTES: 1) Minimum Commanded “Off “or “On” time is 100msec. 2) These IPCs have load current memory. Allow 100 seconds between overload or shorted load restarts for full current startup. 3) Input transitions should be “bounce-less contact” with transitions of <1 msec. 4) Inductive loads must be suppressed for operational command transients and Internal Fault shutdown times as short as 5µs. FIGURE 1 Full isolation between Input Logic, Output Switch Connects and Base allows high or low side switch connections. CONTROL 50% 90% 50% tON tOFF 10% 10%LOAD VOLTAGE 90%

53290-028 DC INDUSTRIAL POWE R CONTROLLER (IPC) Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement. Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible. MICROPAC INDUSTRIES, INC. MICROCIRCUITS PRODUCTS DIVISION  905 E. Walnut St., Garland, TX 75040  (972) 272-3571  Fax (972) 494-2281 www.micropac.com E-MAIL: microsales@micropac.com 10-04-2013 Rev C Pg. 4 Turn on into Short Sequence Short while on Sequence Control 0 1 1 0 1 1 1 1 0 1 I out Off Off Off Off On On Off Off Off On Switch Status 0 0 0 0 Open “1” Open “1” 0 0 0 Open “1” Shorted Output Shorted Shorted X Off Off Off On X X Off Truth Table – Short circuit and Status Notes: 1) Unit Powers up in the OFF condition with application of Primary power. 2) Fault Status reports only when Primary Power is present. 3) An OFF Control to ON Cont rol transition is required to first turn the Unit On. 4) A loss of V DD will return the output state to OFF. 5) Truth Table Power sequencing: Output Status open collector pull-up resistor is assigned a separate and always On voltage producing a “1” when “Open”. I 2c Data Protocol: The data string is organized as a 8 byte string. String (8 bytes) Data

0 LSB Status Input

1 MSB Status Input

2 LSB Switch Voltage

3 MSB Switch Voltage

4 LSB Current Output

5 MSB Current Output

6 LSB Temperature

7 MSB Temperature

I 2c address is 7 bits. The 4 bit address is located from bit 3, to bit 7. A cont of 10 is added to the incoming address to position the 4 hardwired bits. Over bits 3 to 7. Figure 2 Switching Characteristics

53290-028 DC INDUSTRIAL POWE R CONTROLLER (IPC) Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement. Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible. MICROPAC INDUSTRIES, INC. MICROCIRCUITS PRODUCTS DIVISION  905 E. Walnut St., Garland, TX 75040  (972) 272-3571  Fax (972) 494-2281 www.micropac.com E-MAIL: microsales@micropac.com 10-04-2013 Rev C Pg. 5 J3 / P3 Pin Assignment: 1… Address LSB. 2... V SS / Output Common. 3... Address 1. 4... V SS / Output Common. 5... Address 3. 6... V SS / Output Common. 7... Address MSB. 8... V SS / Output Common. 9, 10, 11, 12… No Connect – isolation barrier. 13… I 2c Vcc – 3.3V out or 5.5V max in. 14... I2c CLK. 15... I 2c Common – Return. 16… I 2c Data. 17… Analog Control. 18… Analog Return. 19… 24V Return. 20… 24V In.

53290-028 DC INDUSTRIAL POWE R CONTROLLER (IPC) Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement. Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible. MICROPAC INDUSTRIES, INC. MICROCIRCUITS PRODUCTS DIVISION  905 E. Walnut St., Garland, TX 75040  (972) 272-3571  Fax (972) 494-2281 www.micropac.com E-MAIL: microsales@micropac.com 10-04-2013 Rev C Pg. 6

53290-028 DC INDUSTRIAL POWE R CONTROLLER (IPC) Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement. Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible. MICROPAC INDUSTRIES, INC. MICROCIRCUITS PRODUCTS DIVISION  905 E. Walnut St., Garland, TX 75040  (972) 272-3571  Fax (972) 494-2281 www.micropac.com E-MAIL: microsales@micropac.com 10-04-2013 Rev C Pg. 7 IPC Output High IPC Output Low IPC Output High IPC Output High IPC Output High IPC Output High IPC Output Low IPC Output Low IPC Output Low IPC Output Low P6… I 2c Arrdvark TP240141 I2c/SPI: Pin Assignment (un-modified) 1… I 2c Clock 2, 10… I 2c Common 3… I 2c Data 4, 6…I 2c VCC P5… Analog signals and Power: 1… Analog Control. 2, 4… Analog Common, Return. 5… 24V In. (18VDC to 32VDC). 3, 6… 24V Return. NOTE: Analog Return and 24V Return are not connected at the Power Controller to prevent ground loops at system level. These points must be connected external to the Power Controller for correct operation. Output Connections: 1, 3, 5, 7… Output Switch Connections – Most negative. 2, 4, 6, 8… Output Switch Connections – Most positive.

53290-028 DC INDUSTRIAL POWE R CONTROLLER (IPC) Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement. Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible. MICROPAC INDUSTRIES, INC. MICROCIRCUITS PRODUCTS DIVISION  905 E. Walnut St., Garland, TX 75040  (972) 272-3571  Fax (972) 494-2281 www.micropac.com E-MAIL: microsales@micropac.com 10-04-2013 Rev C Pg. 8

53290-028 DC INDUSTRIAL POWE R CONTROLLER (IPC) Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement. Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible. MICROPAC INDUSTRIES, INC. MICROCIRCUITS PRODUCTS DIVISION  905 E. Walnut St., Garland, TX 75040  (972) 272-3571  Fax (972) 494-2281 www.micropac.com E-MAIL: microsales@micropac.com 10-04-2013 Rev C Pg. 9 Package Dimensions FIGURE 3 TRIP CURVE NOTES: 1) Output currents are interrupted in the Must Trip / May Trip / Must Not Trip per the following graph. 2) Output (sustaining) Current is 12 to 18A. 3) Load fault current from the “ON” operating condition are limited by the source and load impedance. 4) Over current and fault trip currents terminate abruptly and are snubbed for up to 3µH of load inductance. Product Status: This document contains information on a product under development. Micropac reserves the right to change this product.