This version (22 Nov 2023 20:35) was approved by Connor Bryant.The Previously approved version (22 Nov 2023 20:35) is available.
Table of Contents
Power Supply Design
Link to higher level page: Space Based Satcom Reference Design
The power solution for the Wideband Satcom Front End provides regulation for the four major functional blocks in the system:
- Wideband Signal Conditioning TX/RX Chain
- Band Specific Analog Beamforming TX/RX Chain
- LO Generation and Conditioning Chain
- AD9082 MxFE and Digitization Chain
TX/RX Beamforming Network Power Supply Design
The power solution for both the transmit and receive analog beamforming front ends (shown below) feature two types of switching regulators. One is the LTM8063, which features Silent Switcher® technology and offers a wide selectable switching frequency from 200kHz to 2.2MHz. The other is the ADP5600, which again, integrates a low ripple interleaved inverting charge pump with a high performance LDO to easily produce clean negative voltages. The sensitive signal chain power domains are regulated by low noise, high performance linear regulators. LDOs such as the LT3041 follow LTM8063. The LT3041 features industry leading performance with 80dB PSRR at 1MHz.
TX/RX LO Generation Power Supply Design
The power solution for both the transmit and receive LO chains (shown below) feature two types of switching regulators. One is the ultra-small MAXM17632, which delivers 1A at high efficiency from up to 36Vin in a tiny 3x3mm uSLICTM package. The other is the ADP5600, which integrates a low ripple interleaved inverting charge pump with a high performance LDO to easily produce clean negative voltages. The sensitive signal chain power domains are regulated by low noise, high performance linear regulators.
TX / RX Down-converter Power Supply Design
The power solution for both the transmit chain and receive chain (shown below) follow a similar design philosophy as the LO. They feature two types of switching regulators. One is the LTM8063, which features Silent Switcher® technology and offers a wide selectable switching frequency from 200kHz to 2.2MHz. The other is the ADP5600, which again, integrates a low ripple interleaved inverting charge pump with a high performance LDO to easily produce clean negative voltages. The sensitive signal chain power domains are regulated by low noise, high performance linear regulators.
Digitizer and Clock Power Supply Design
The power solution for the MxFE and its clock (shown below) features Silent Switcher® technology. These high efficiency regulators, LTM8051 and LTM4702, feature low EMI and output noise. Some power domains of the MxFE chip can be driven directly from a Silent Switcher® output, while the more sensitive ICs such as the ADF4377 clock chip are further regulated by LDOs like the LT3041. The LT3041 LDO features industry leading performance with 80dB PSRR at 1MHz.
resources/eval/developer-kits/space-based-satcom-ref-design/power-supply.txt · Last modified: 22 Nov 2023 20:35 by Connor Bryant