CIRCUIT TECHNOLOGY www.aeroflex.com Radiation Environment

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861X Series Radiation Hardened Watt Power Supply Module
CIRCUIT TECHNOLOGY
www.aeroflex.com
Radiation Environment
Total Dose 100K (Si) MeV/cm2/mg
Baseplate Mounting Temperature Power Output, +5V, +12V, +15V, -12V -15V Output Versions Available Input Internal Suppression Circuitry designed meet requirements MIL-STD-461C Short Circuit Protected Input Undervoltage Shutdown Output Overvoltage Shutdown Overtemperature Shutdown Input Shutdown Control 9001 Input Synchronization Control Output Synchronization Control RTIFIE Output Status Signal Packaging Non-Hermetic housing with connector
-55oC
85oC
VIN+ VINVO+
INHIBIT INPUT CONTROL CIRCUITRY OUTPUT CONTROL CIRCUITRY
STATUS
SYNC_IN
SYNC_OUT
IN_COM
OUT_COM
Figure Block Diagram
eroflex Circuit Technology Advanced Multichip Modules SCD861X 5/16/00
General Description
Aeroflex's ACT861X series power supply modules radiation hardened Watt units designed space applications. Using double ended forward topology with synchronous rectifiers achieves high efficiency, Chip-On-Board (COB) construction together with planar magnetics allows Aeroflex provide space quality components down-to-earth prices. ACT861X series full featured single output converters, with filtering, short circuit protection, input undervoltage shutdown, output overvoltage shutdown, overtemperature shutdown, input shutdown control synchronization both input output sides. Other output voltages available upon request. Aeroflex's ACT861X series power supply modules radiation hardened Watt units designed space applications. block diagram shown Figure uses transistor (double ended) forward topology minimize voltage stresses semiconductors, synchronous rectifiers used achieve high efficiency. These full featured converters intended used space environment, conduction cooled baseplate interconnected system connector. converter includes features such input undervoltage shutdown, output overvoltage shutdown, overtemperature shutdown, input shutdown control synchronization both input output sides. optocouplers used converter assure long term total dose hardness. ACT861X series fabricated encapsulated Chip-On-Board module aluminum housing. Outline Drawing shown Figure input undervoltage shutdown disables converter when input below minimum specified setpoint. Nominal input current will shutdown current specified. This prevents converter from generating output voltages event undervoltages drawing high input currents when attempting power rated load with these input voltages. When input voltage above minimum specified Table converter commences operation. Overtemperature protection integral ACT861X series. internal temperature sensor mounted near higher power dissipating components shuts converter mounting temperature above threshold specified Table When converter cools will turn back with cycling input power required. output overvoltage circuit uses portion output voltage derived power internal logic (the bootstrap supply) measure indirectly output voltage. This voltage sensed, exceeds predetermined threshold converter will cycle nominal 100Hz frequency attempting restart. Control ACT861X achieved INHIBIT pin. This used both internal temperature monitor control module. When INHIBIT shorted IN_COM module disabled. Nominal current flowing through INHIBIT line this time less than 1mA, on/off threshold above negative return. When converter temperature sensor -55°C INHIBIT line will approximately 8.7V; 85°C will approximately 6.7V. This affords user convenient measure converter internal temperature. Synchronization either referenced output ground converter input ground. When synchronization referenced input ground impedance clock waveform, approximately duty cycle, compatible between 500KHz, should applied SYNC_IN terminal IN_COM terminal. This will synchronize switching power converter although feedback oscillator. desired synchronize both power converter feedback oscillator impedance clock waveform, approximately duty cycle, compatible between 500KHz, should applied SYNC_OUT terminal OUT_COM terminal. STATUS output open collector signal, active low, referenced OUT_COM that asserted when output voltage within ±10% nominal output voltage.
Aeroflex Circuit Technology
SCD861X 5/16/00 Plainview (516) 694-6700
Table Performance Specification(TC -55°C +85°C, +50V ±5%, Unless otherwise specified) Parameter Nominal Output Voltage Regulation, Load Full Load Stability, Over Operating Temperature Regulation, Over Line Voltage Ripple Output Overvoltage Shutdown Efficency, Full Load Output Current Output Current Limit Output Voltage Accuracy Output Power Input Voltage Input Voltage Input Voltage, Transient Input Input Undervoltage Threshold Input Current, Full Load Input Current, Load Input Current, Shutdown Asserted Input Output Isolation Switching Frequency Transient Response Overshoot Output Short Circuit Duration Radiation, Total Dose Radiation, SEE/SEB Thermal Shutdown, Case Operating Temperature, Case Storage Temperature ACT8601 0.05 +5.5 ACT8602 0.05 0.05 0.025 +13.2 ACT8603 0.05 0.05 0.025 +16.5 Complies with MIL-STD-461C 38.5 0.15 250V Minimum load change, Maximum deviation, returns regulation band 1msec. Turn Turn Power Failure: None Will Withstand continious short without damage 85°C -55°C +85°C -65°C +125°C ACT8604 0.05 0.05 0.025 -13.2 ACT8605 0.05 0.05 0.025 -16.5 Units Volts Volts, Maximum Volts, Maximum Volts, Maximum mVolts RMS, Maximum Volts, Maximum Minimum
Amperes, Maximum Amperes, Maximum Maximum Volts, Minimum Volts, Maximum Volts, Maximum second Volts, Maximum Amperes, Maximum Amperes, Maximum mAmperes, Maximum KHz, Nominal KRad (Si), Maximum MeV/cm2/mg, Maximum Minimum
Aeroflex Circuit Technology
SCD861X 5/16/00 Plainview (516) 694-6700
.171
Note
3.438
(1.852)
4.000
.500 .281 .250 3.500 3.000 3.500
Table Connector AssignmentPin Function CHASSIS COMMON VOVINSYNC_IN STATUS OUT_COM VIN+ INHIBIT IN_COM SYNC_OUT Notes: Input Output Connector Cannon DBMMMD13H3PJ, mating with DBMM13W3S. Connector assignments listed Table Dimension Tolerances: Place Decimals. ±.015 Place Decimals. ±.005 .900
Figure Package Outline Drawing
Aeroflex Circuit Technology
SCD861X 5/16/00 Plainview (516) 694-6700
CIRCUIT TECHNOLOGY
Ordering Information
Model Number
8611 8612 8613 8614 8615
Output Voltage
+12V +15V -12V -15V
Specifications subject change without notice
Aeroflex Circuit Technology South Service Road Plainview York 11803 www.aeroflex.com/act1.htm
Aeroflex Circuit Technology
Telephone: (516) 694-6700 FAX: (516) 694-6715 Toll Free Inquiries: (800) 843-1553 E-Mail: sales-act@aeroflex.com
SCD861X 5/16/00 Plainview (516) 694-6700

CIRCUIT TECHNOLOGY www.aeroflex.com Radiation Environment

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