A REVOLUTIONARY APPROACH TO SUPPLY BIAS SIGNAL CONDITIONING
TransSiP's ground-breaking JC™ technology enables the use of digital power in low power applications, bringing advantages of stability, efficiency, and precision to portable, wearable, remote, and IoT devices. Developed using a novel methodology employing cutting-edge real-time spectrum analysis techniques revealing signal details invisible to conventional spectrum and vector signal analyzers, TransSiP's innovative JC DC-DC conversion circuit topology is applicable to a broad range of applications and compatible with system-in-package devices. This patent-pending design and methodology addresses the critical needs of noise-sensitive microsystems at the heart of portable, wearable, and IoT/M2M wireless communications and navigation for clean power and high conversion efficiencies in both full and standby power modes.
Seeing is Believing...
The well-known components of PFM supply bias noise:
- Output voltage ripple
- Harmonics of switching frequency/frequencies
- Ringing (due to parasitics)
- Spurious or transient events
can be filtered and suppressed, although the variable frequency of PFM switched-mode converters can make this problematic. However, once ripple and noise on the supply bias is attenuated, TransSiP has found that noise amplitude is no longer the dominant factor.
Real-time spectrum analysis provided the answer: there are very short, varying interval transient and spurious events associated with a time domain component. This component, which TransSiP has termed “SNJ” (switching noise jitter) is what causes the chaotic noise signatures that compromise powered system performance.
Read Tektronix’ case study here.
A New Approach
The insights provided by DPX® analysis and mathematical modelling led to the development of a new filtering concept for switched-mode PFM-type DC-DC converters. This new circuit topology can be implemented in the form of a discrete SiP component on the output of a PFM DC-DC converter, as a component set on a system motherboard, or as a complete DC-DC conversion solution: TransSiP's Symphony A2™ chipset.
TransSiP's ground-breaking JC-PFM™ DC-DC converter system-in-package (SiP) uses TransSiP's patent-pending jitter conditioning technology to eliminate chaotic noise normally produced by pulse-frequency modulated DC-DC power conversion. For the first time, this breakthrough enables use of efficient, PFM DC-DC power conversion in highly noise-sensitive applications such as spread-spectrum communications (WiFi, BLE, ZigBee) and GPS/GNSS navigation receivers, bringing advances in battery life, transceiver range, and overall system performance to portable, wearable, IoT, and other power-constrained applications.
symphony a2™ FULLY INTEGRATED PFM DC-DC ConverteR CHIPSET
- Best-in-Class Noise Profile: Enabled by Patent-pending TransSiP JC SNJ™ conditioning technology
- Ultra-Low Power, High Efficiency from Light-to-Full Load: up to 95%
- 0.6 V to 4.0 V Fine Customizable Vout (±2%, 0.05V step increments)
- Freedom in Vcc Rail Distribution (restricted placement of POL regulator not required)
- Less than 100 nA Stand-by Current (i.e. negligible to battery self-discharge)
- 2 V to 6 V Wide VIN Range and Stable VOUT with Pulsed Applications
- 500 nA Typical Quiescent Current
- Output Current: 200mA / Low Ripple 50mA
- Integrated Inductor (optional)
- High Speed Start-up
- Input Voltage Bypass
- Input Undervoltage Lockout (UVLO)
- Quick Output Discharge for Rapid Charge Release
- Short Circuit Protection
- Rush Current Limit