PAYLOAD POWER AND DATA HANDLING
The PPDH-110 by Azista BST Aerospace Private Limited is a sophisticated payload power and data handling unit designed for small satellite payloads. It acts as the single interface unit between the bus and payload. It has space heritage and is qualified for space. Its modularity by design makes it easy to adapt to any new payload while leaving the bus unchanged. Thus, any voltages between 1.8V to 40V can be provided and any TMTC interfaces can be provided.
The PPDH110 combines the functions of power conditioning and data handling for the payload units as shown in the table below. Its exact configuration can be easily adapted to the customer’s specific payload requirements making it an essential ingredient of a responsive space mission concept.
| PPDH110 functions | |
|---|---|
| Power conditioning functions | Command and data handling functions |
| Supplying regulated DC voltages and bus voltage to payload units | Forwarding tele commands to payload units |
| Power switching of payload power lines | Switch payload data routing between payload units |
| Over-current protection for payload units | Payload time synchronisation |
| Bus power subsystem protection against payload latch-ups | Collecting payload telemetry |
| CHARACTERISTICS | PPDH110-1PL | PPDH110-2PL | CUSTOM |
|---|---|---|---|
| TMTC Interface | RS422 | RS422 | RS422 or other |
| Payload Data Interfaces | 13xRS422, 12xLVDS | 19xRS422, 16xLVDS | As required |
| Input Voltage | 20.5 V – 25.2 V (23.1 V nominal) | 20.5 V – 25.2 V (23.1 V nominal) | 23.1V or other |
| Nominal Current Consumption | 0.20 A | 0.080 A | TBD |
| Number of Power-Out Lines | 8 | 15 | As required |
| Output Voltages | 23.1V, 13V, 5.5V, 3.8V | 23.1V, 13V, 5.5V, 3.8V | Any from 1.8V to 40V |
| Max Output Power | 188W@23.1V, 2x 73W@13V, 2x 24W@5.5V, 2x 28W@3.8V | 370W@23.1V, 2x 73W@13V, 2x 24W@5.5V, 2x 28W@3.8V | As required |
| Size | 186 x 98 x 46 mm³ | 186 x 98 x 67 mm³ | TBD |
| Mass | 780 g | 1100 g | TBD |
| Operating Temperature | -15°C to +35°C | -15°C to +35°C | -15°C to +35°C |
| Design Life | 5 years LEO | 5 years LEO | 5 years LEO |
| Space Heritage | Yes | Yes | On component level |
