53508 Series SOLID STATE POWER CONTROLLERS PRELIMINARY Features: • 270V, 10A Operation • Power MOSFET with Low On-State Resistance • Controlled Soft Turn-On • I²t Overload Protection • Short Circuit protection • External Trip Profile Programming (30% to 100% of Rating) • Fault and Output State Monitor • Isolation to 1000V • Military environmental screening available Mii MICROPAC MICROCIRCUITS PRODUCTS DIVISION Applications: • • • • Designed for 270V bus application Aircraft Power Distribution Military/High Reliability Systems Satellite/Space Systems DESCRIPTION The 53508 Series Solid-State Power Controllers are lightweight and resistant to damage from shock and vibration. They are designed to replace electromechanical breakers and solid-state relays. They overcome the problems associated with arcing and contamination of breakers as well as providing internal protection for overload and short circuit conditions. They provide Fault and Output State monitoring as well as a controlled Soft Turn-On. The Trip Profile is externally Programmable from 30% to 100% of Rating Optical coupling between input and output stages provide effective isolation of 1000VDC. The Power MOSFET switches used in the output stage provide low “on” resistance, low offset and minimal internal power dissipation. Precautions: Precautions must be taken to limit the transient voltages generated by the inductance in the system wiring and load when a short circuit causes the SSPC to turn off. When testing individual SSPC’s, care should be taken to simulate actual system conditions. ABSOLUTE MAXIMUM RATINGS Isolation voltage .......................................................................................................................................................... 1000 VDC Continuous operating output voltage .............................................................................................................................400 VDC Transient output voltage…………………………………………………………………....................................................550 VDC Bias supply voltage ............................................................................................................................................... -.6 to 5.5 VDC Control Voltage ..................................................................................................................................................................32VDC Operating temperature ............................................................................................................................ -55ºC to +125ºC Case Storage temperature ..........................................................................................................................................-60ºC to +150ºC 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 E-MAIL: [email protected] 11/30/06 Rev A Pg. 1 of 5 www.micropac.com 53508 Series Solid State Power Controllers This device is available unscreened (for engineering use) or environmentally screened to H level plus PIND in accordance with Table C-IX of MIL-PRF-38534. 53508 ELECTRICAL CHARACTERISTICS TA = -55 to 125° C PARAMETER TEST CONDITIONS MIN TYP MAX UNITS 4.75 5.0 5.25 VDC 25 35 mA mA Input characteristics Bias supply range Bias current Input Current (Control) 32 VDC Input 6 Input Current (Control) 5 VDC Input 2 µA 32.0 VDC 2.2 VDC Control voltage range -0.5 Turn-on voltage See Notes 1 & 2 Turn-off voltage See Notes 1 & 2 Dielectric strength 2.4 5 2.8 1.9 Input /Output / Power Bus/ Case 1000 Output current, Continuous Steady State Load Current 110 Output Current, Trip Point 500% of Rating 100 Output Current, Trip Point 600% of Rating VDC VDC Output characteristics Steady State Current Adjustment Range: Transient Voltage 120 % of Rating mS 50 30 100 µS 100 % of Rating Output Device Rating 550 VDC Forward Voltage Drop 10A Load Current @ 25°C 0.85 VDC Forward Voltage Drop 10A Load Current @ 125°C Turn-on time @ 25ºC case 270VDC, 10A Turn-off time @ 25ºC case 270VDC, 10A 400 1.7 VDC 500 600 µS 50 100 µS Off-State Leakage Vds = 550V, Tc = 25°C 250 µA Off-State Leakage Vds = 440V, Tc = 125°C 1000 µA Iload = 10A. Ta = 25°C Total Device Power Dissipation (Tpd) 11.5 W Junction temperature 150 ºC Thermal resistance, θJC 2.0 ºC/W NOTES: 1. Maximum input switching frequency not to exceed 1 Hz under normal conditions, or into a shorted output. 2. Input transitions must be “bounceless contact” with transitions of <1 ms. 3. Devices are electrically tested at -55°C, +25°C and +125°C with no environmental screening or qualification. 4. Fully compliant Class H or Class K devices will require Element Evaluation and QCI. 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: [email protected] 11/30/06 Rev B Pg. 2 of 5 53508 Series Solid State Power Controllers TRIP PROFILE 700 600 500 % OF RATING ALWAYS TRIP 400 300 200 100 0 0.01 NEVER TRIP 0.1 1 10 100 TIME (SEC) TRIP PROFILE The Trip Profile is a combination of 2 separate functions; the I²t Circuit protection and the Short Circuit protection. The I²t Circuit protection continuously monitors the Load Current and when the Load Current exceeds a preset limit (110 to 120% of rating) the Time-Integral of the difference determines the Trip time as indicated by the curved line on the chart (Typical Turn-off time is <1uS). The Short Circuit protection continuously monitors the Load Current and when the Load Current exceeds a preset limit (600% of Rating) it immediately shuts down the SSPC (Typical response time is < 50uS, Typical Turn-off time is <1uS). Trip Profile External Trim The Trip Profile is externally Programmable by connecting the proper resistance between Pins 12 and 13 (Trip Set - and Trip Set +). The following formula dictates the Profile setting: Rext = ( 7 * Xprog / (1 – Xprog)) – 3 Where Xprog is the ratio of the desired trip point to the device rating. (0.3 < Xprog < 1) Rext is in KOhms. Table 1 provides typical solutions for Rext. 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: [email protected] 11/30/06 Rev B Pg. 3 of 5 53508 Series Solid State Power Controllers Table 1 Current Rating 3A 5A 6.7A 8.3A 10A Nominal Value (Rext) 0 4K 11.2K 32K OPEN Tolerance (Rext) + 10% + 10% + 10% - TURN ON PROFILE 300 250 90% LOAD VOLTAGE 200 150 100 50 10% 0 0 100 200 300 400 500 600 700 800 900 1000 1100 TIME (uS) The SSPC applies Voltage to the Load at a fixed rate of approximately 43V/100uS during Turn-On independent of the Load Current. This corresponds to a Turn-On time of 500uS when measured from 10% to 90% with an applied voltage of +270VDC. 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: [email protected] 11/30/06 Rev B Pg. 4 of 5 53508 Series Orderable Part Number 53508-102 53508-108 Solid State Power Controllers Description Unscreened (for engineering evaluation) Screened to Class H plus PIND of MIL-PRF-38534, Table C-IX 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: [email protected] 11/30/06 Rev B Pg. 5 of 5