A 1.5W 10V-output Class-D amplifier using a boosted supply from a single 3.3V input in standard 1.8V/3.3V 0.18&amp;#x03BC;m CMOS

Serneels, Bert; Geukens, Eldert; Muer, Bram De; Piessens, Tim

doi:10.1109/isscc.2012.6176890

Cited by 15 publications

(7 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There were attempts to use sequential switching [7], but it lacks programmability. The self-adaptive HV driver was proposed in [8,9,10]. It automatically adapts to a safe bias point, so guarantees programmability and safety.…”

Section: Fc Rate(n)∶=mentioning

confidence: 99%

An Offset Charge Compensating Biphasic Neuro - stimulation for Faradaic DC-Current Reduction

Cho

Koo

Jang

et al. 2021

2021 IEEE International Symposium on Circuits and Systems (ISCAS)

View full text Add to dashboard Cite

In this paper, we analyze faradaic DC current (FC) generated by inherent offset charge (IOC) and charge mismatch. Under frequent shorting, the analysis shows that mismatchinduced DC current is small compared to IOC-induced DC current. To reduce the FC, we propose a biphasic pulse scheme which compensates the IOC. Simulation results show the proposed pulse scheme reduces the FC by about 58 times compared to a conventional biphasic pulse.

show abstract

Section: Fc Rate(n)∶=mentioning

confidence: 99%

An Offset Charge Compensating Biphasic Neuro - stimulation for Faradaic DC-Current Reduction

Cho

Koo

Jang

et al. 2021

2021 IEEE International Symposium on Circuits and Systems (ISCAS)

View full text Add to dashboard Cite

show abstract

“…There are a number of commercially available products such as the LM48510 and TPA2015D1 from Texas Instruments (TI), MAX98502 from Maxim Integrated, and FAB3103 from Fairchild Semiconductors that address this demand, as well as academically published ones such as [1]. The boost converter may be either diode rectified or synchronously rectified.…”

Section: Introductionmentioning

confidence: 99%

“…To cope with the 'more loudness' demand, there is a commercial trend to integrate a boost converter alongside a Class D audio driver on the same chip to maintain the desired output power levels over the battery voltage range. There are a number of commercially available products such as the LM48510 and TPA2015D1 from Texas Instruments (TI), MAX98502 from Maxim Integrated, and FAB3103 from Fairchild Semiconductors that address this demand, as well as academically published ones such as [1]. The boost converter may be either diode rectified or synchronously rectified.…”

Section: Introductionmentioning

confidence: 99%

Type III compensated voltage mode line feedforward synchronously rectified boost converter for driving Class D audio H-bridge to deliver 7 W peak power into an 8 $\Omega$ speaker

Kiliç¹

2015

Turk J Elec Eng & Comp Sci

View full text Add to dashboard Cite

Abstract:In this paper, a circuit topology for a synchronously rectified boost converter aimed to act as a power supply for a Class D H-bridge that would deliver up to 7 W peak power into an 8 Ω speaker is presented. The design is implemented in a submicron BCD process technology. Some of the challenges in this design are as follows. The first challenge was to optimise the design such that it would not cause on-chip power dissipation levels that would go beyond acceptable levels for Wafer Level Chip Scale Package (WLCSP), which is a commonly used package for space constrained applications in portable spaces. To address this issue, a Class G mode of operation to deliver multiple boost voltage levels has been proposed. Second, due to the chosen submicron BCD process lacking some devices such as zener diodes to clamp maximum voltages that active device gate-source and/or drain-source terminals in case of transient or normal operating conditions of the circuit, new ways of circuit implementation techniques have been come up with to prevent active devices from being damaged. One more important issue for handheld applications is that it is imperative to choose a small form factor (height and footprint) external inductor, which can also stand up to 4 A for this particular design. The new trend in small footprint power inductors is to use an iron powder core to keep the inductance constant.This creates a new problem with these types of inductors, whereby the series resistance of the inductor would increase with the frequency, which will increase the inductor AC core losses at switching frequencies of the switching converter.Trade-offs between total harmonic distortion plus noise and boosted voltage levels are also studied.

show abstract

“…Unfortunately, such transistors are technology dependent and not available in recently developed processes such as the 28nm TSMC technology. Another way of designing these high-voltage circuits compatible with scaled technologies is to use stacked low-voltage standard CMOS transistors [2]- [11].…”

Section: Introductionmentioning

confidence: 99%

Design of a high-voltage differential amplifier based on stacked low-voltage standard CMOS with different input stages

Pashmineh

Killat

2015

2015 38th International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO)

View full text Add to dashboard Cite

This paper presents the design of a high-voltage differential amplifier using six different pre-input stage circuits to reduce high-voltage input levels to low-voltage signals. The proposed circuits are designed using 65 nm CMOS process technology with a nominal voltage of 2.5 V and a supply voltage of 5 V. The designs are based on stacked low-voltage standard CMOS transistors. The different pre-input stage circuits are compared to each other in terms of their circuit description, drawbacks, advantages and simulation results. The principle of the five designed pre-input stage circuits can be applied to higher voltage range input signals as well.I.

show abstract

A 1.5W 10V-output Class-D amplifier using a boosted supply from a single 3.3V input in standard 1.8V/3.3V 0.18μm CMOS

Cited by 15 publications

References 5 publications

An Offset Charge Compensating Biphasic Neuro - stimulation for Faradaic DC-Current Reduction

An Offset Charge Compensating Biphasic Neuro - stimulation for Faradaic DC-Current Reduction

Type III compensated voltage mode line feedforward synchronously rectified boost converter for driving Class D audio H-bridge to deliver 7 W peak power into an 8 $\Omega$ speaker

Design of a high-voltage differential amplifier based on stacked low-voltage standard CMOS with different input stages

Contact Info

Product

Resources

About