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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. ●Power Management & Controls Division 905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281 www.micropac.com E-MAIL: microsales@micropac.com 11/21/2014 Rev P Pg. 1 of 9 53502 LATCHING SOLID STATE POWER CONTROLLER Mii Power Management & Controls Division Features: SPST, Normally Open I 2t Circuit Protection 1A, 2A Pin Configurable Operating Current Switch Status Output Power FET Output with Low On-State Resistance Operating Temperature Cycle -55 C to +125C Available Military Environmental Screening Applications: 28V bus applications Aircraft Power Distribution Military/High Reliability Systems Satellite/Space Systems
DESCRIPTION
The 53502 Solid State Power Controller is lightweight, resistant to damage from shock and vibration, and immune to contact- related problems (contamination, arcing) associated with mechanical equivalents. Control and Status is user powered by a 4.5 to 5.5V input. The Output is isolated from Control / Status, Bias and Case. The Output is configurable for 1A or 2A High or Low side Load switching. An isolated Bias power supply is provided to operate the Output circuits and may be powered from the load bus or a separate power source. The control input is CMOS compatible and operates from a supply of 4.5 to 5.5VDC (See Figure 1). The Latching feature allows the Output state to remain as commanded in the event of loss of 5V Logic power. Transformer coupling between the input, output and Bias power stages provides isolation up to 500 V RMS. The Power MOSFET output minimizes output voltage drop. Integral short-circuit protection, I 2t trip and Output Status is provided. The sensed output current circuit responds to over- current with an I2t trip curve by opening the output. An open-collector output status indicates the switch state. The output will remain blocked indefinitely until the short is removed and the unit reset. This feature prevents damage to the controller and averts further system failures that may be caused by the short circuit. Output Status is On (High) when the output is switched On and is Off (Low) whenever the output is commanded off or tripped. Resetting the unit is accomplished by cycling the input control. ABSOLUTE MAXIMUM RATINGS Notes: 1 60 Hz sine wave
2 Reversing polarity on the output may cause permanent damage
53502 LATCHING SOLID-ST ATE POWER CONTROLLER
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. ●Power Management & Controls Division 905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281 www.micropac.com E-MAIL: microsales@micropac.com 11/21/2014 Rev P Pg. 2 of 9
ELECTRICAL CHARACTERISTICS
TA = -55°C to 125° C PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Input Characteristics CMOS Configurations (Figure 1) VDD Input 4.5 5.5 VDC Control Input current 5 VDC Input 500 A Control voltage range -0.5 5.5 VDC Turn-on voltage At V DD = 5.0V 2.8 3.4 VDC Turn-off voltage At V DD = 5.0V 0.5 2.0 VDC Dielectric strength (Control / Status to Output to Bias to Case) 60 Hz 500 V RMS Bias Characteristics Bias current IBias Note 5 5 10 mA Bias supply range, VBias Note 6 28 50 VDC Output Characteristics Output current, sustaining: Continuous blocking voltage Note 7 100 / 50 VDC On-state resistance, Rds (1A Configuration) 25ºC Case .1Ω .13Ω Ohms On-state resistance, Rds (2A Configuration) 25ºC Case .075Ω .085Ω Ohms Turn-on time @ 25ºC case Figure 2 0.8 2.0 mS Turn-off time @ 25ºC case Figure 2 0.5 1.0 mS Off-state leakage At Rated Voltage 40 100 A Output Capacitance 700 pF Load Start current 25ºC 6/12 7.5/15 9/18 A Short-circuit peak 100 A Trip Reset Time Remove short / overload & Cycle input 50 mS Status Output Specification Status Supply Voltage (open Collector) 5.0 32 VDC Status off leakage current VS = 30 VDC 100 µADC Status off leakage current VS = 15 VDC 4 µADC Status on voltage I STATUS = 5 MA 0.4 VDC High-To-Low Transition Time I STATUS = 5 MA 20 50 µS Junction temperature 150 ºC Thermal resistance JA JC ºC/W ºC/W Application Notes: 1. Maximum input switching frequency not to exceed 10 Hz under normal conditions, or .5 Hz if output is shorted. 2. Input transitions should be <1 ms and duration and input source should be “bounce-less contact” type. 3. Inductive loads must be snubbed or clamped. 4. Peak current that may flow when output is shorted. 5. Current from the Bus input. 6. 50V Maximum for Bias Pins 10 to 5. 7. 100V Maximum for output Pins 9 to Pins 6, 7 and/or 8.
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. ●Power Management & Controls Division 905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281 www.micropac.com E-MAIL: microsales@micropac.com 11/21/2014 Rev P Pg. 3 of 9 See Appendix A for operational description CONTROL 90% 90% 10% 10% tON tOFF 10% 10%LOAD VOLTAGE 1 ms MAX 90% Figure 2 Switching Characteristics
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. ●Power Management & Controls Division 905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281 www.micropac.com E-MAIL: microsales@micropac.com 11/21/2014 Rev P Pg. 4 of 9 Notes: Note 1: A turn-off into a short produces an increase in current to the initial I 2T must trip value. Note 2: Shorted while On from any On operating condition can have a s surge current of as much as 100A. Note 3: Loss of and re-application of Bus power will result in a re-start (output open & Output Status low.) Note 4: Output Status signal assumes a pull-up voltage is always present to produce a “1” when status is open. Note 5. Latching feature on 250, 400, and 500V versions is dependant upon uninterrupted Bias Power. VDD CONTROL ON OFF ON OFF 3 A IOUT OUTPUT STATUS OFF ON (OPEN) SIMULATED SHORT Figure 3 - TIMING DIAGRAM
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. ●Power Management & Controls Division 905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281 www.micropac.com E-MAIL: microsales@micropac.com 11/21/2014 Rev P Pg. 5 of 9 Truth Table – Power Sequencing: Figure 4 Bus Voltage 0 On 0 On On VDD 0 0 On Control X X X 0 X X I Out Open Open Open Open 0 1 Output Status Open “1” Open “1” 0 0 Open “1” Short X X X Off Off Off Off (Note 1) (Note 1,2) (Note 3) (Note 3,4) (Note 5) (Note 5) Truth Table – Short circuit and Status: Figure 5 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 Output 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 Note 1: Unit Powers up in the Off condition with application of either Bus or VDD. Note 2: Output Status reports only when VDD is present. Note 3: Control “0” Off must be invoked upon simultaneous applications of 5V and Bus Power for an unambiguous output and fault status. Note 4: An Off Control to On Control transition is required to first turn the Unit On. Note 5: Loss of V DD will not change output state. Note 6: Truth Table-Power sequencing: Output Status open collector pull-up resistor is assigned a separate and always present voltage, producing a “1” when “Open”.
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. ●Power Management & Controls Division 905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281 www.micropac.com E-MAIL: microsales@micropac.com 11/21/2014 Rev P Pg. 6 of 9 Package Dimensions Figure 6 USA BeO 53502-100-10-XX 31757 1.300 1.130 0.165 0.200 0.145 0.260 0.550 0.030
10 Places
8 Places
Ref. Max. Min. R0.020
4 Places
XXXX (DATE CODE) IN V CONNECTION
1 OUTPUT STATUS
2 V DD
3 CONTROL RETURN
4 CONTROL
5 BIAS RETURN (- BUS)
6 OUT (1A)
7 OUT SENSE
8 OUT (1A)
10 BIAS (+ BUS)
Notes: 1. For 1A output, connect Pins 6 and 7 or Pins 7 and 8; for 2A output connect Pins 6, 7 and 8. 2. Bias power input at Pins 10 and 5 may be connected to the BUS power or a separate power source. 53502-100-01-XX
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. ●Power Management & Controls Division 905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281 www.micropac.com E-MAIL: microsales@micropac.com 11/21/2014 Rev P Pg. 7 of 9 Figure 7 Notes: 1) Initial current limits (NO TR IP and MUST TRIP) will be 6 and 9A for each of the 1A outputs. 2) 1A Output (Case pins 6 and 7 connecte d together). Output current per graph. 3) 2A Output (Case pins 6, 7 and 8 connected together). Output current two times values of graph. CURRENT (Amps) per Output 2.4A 1.2A MUST TRIP LIMIT NO TRIP LIMIT GUARANTEED MUST TRIP LIMIT AT TA-18C 0.01 0.1 1 10 SEC0NDS
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. ●Power Management & Controls Division 905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281 www.micropac.com E-MAIL: microsales@micropac.com 11/21/2014 Rev P Pg. 8 of 9 Ordering Information: MPC-53502-XXX-XX-XX Notes: 1. The device contains radiation hardened components and/or other features that provide a level of radiation tolerance. Micropac does not guarantee any level of radiation hardness. Specific lot testing is required to determine the level of radiation hardness. Micropac does not offer this device as compliant to Appendix G (RHA Requirements) of MIL-PRF-38534. 2. Devices are electrically tested at -55 C, +25C and +125C with no environmental screening or qualification. 3. Fully compliant Class H devices will require Element Evaluation and QCI. 4. Contact factory for custom voltage, current and feature combination. 01 - 1A or 2A Externally Settable Operating Current S – Standard R – Radiation Tolerant (See Note 1) A - No Screening (See Note 2) B - Screened to Table C-IX of MIL-PRF-38534 Class H C - Full Class H Compliant (See Note 3) 100 - Maximum DC Voltage (28VDC System)
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. ●Power Management & Controls Division 905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281 www.micropac.com E-MAIL: microsales@micropac.com 11/21/2014 Rev P Pg. 9 of 9 Appendix A: Operational Description The 53502 functions include: 1. Logic connected components 2. Bus connected MOSFET output switch 3. Bus connected control functions 4. Bias regulator and power supply 1. The logic connected components consists of the 5V (4.5 to 5.5V) customer furnished operating power, the Open Collector Status output and detector circuits, the control input and transformer isolation drive circuit. The internal logic is CMOS with compatibility with TTL and NMOS circuits. 2. The Bus connected MOSFET output switch is isolated from all other circuit elements (Logic connected components, Bias inputs and Case). This allows operation as floating switch which may be connected as a High side or Low side switch. Pins 6 and 8 have a dedicated sense resistor for each output and when either is connected to Pin 7 (Sense) a feedback voltage is made available to the Bus connected control functions to allow a 1A output. Pins 6 or 8 tied to pin 7 allows an output of 1A and connecting Pins 6, 7 and 8 allows an output of 2A per the I curve of Figure 7. 3. Bus connected control functions are referenced to the Output Sense Pin 7 and isolated from Logic connections, Bias inputs and Case. The Control input transformer secondary operates the State Latch and resets the Trip latch. On power up, the Trip latch is designed to initialize in the tripped state preventing an accidental ON condition. A Control Low (OFF) ensures the State latch and gate drive is OFF and resets the Trip Latch. The following Control ON and all commands following the initial ON provide like output from the output MOSFET. Current sense feedback is monitored for I 2t and over-current. Out of bounds currents are detected and set the Trip latch which in turn shuts the MOSFET gate drive OFF. Also, Status OFF information is fed back across the input transformer and reported through the Status Output. 4. The Bias circuit pre-regulates the 28V Buss input and generates the various isolated voltages and signals for the internal functions.