標題: | LDMOS Channel Thermometer Based on a Thermal Resistance Sensor for Balancing Temperature in Monolithic Power ICs |
作者: | Lin, Tingyou Ho, Yingchieh Su, Chauchin 電子工程學系及電子研究所 電信工程研究所 Department of Electronics Engineering and Institute of Electronics Institute of Communications Engineering |
關鍵字: | monolithic power ICs;temperature sensor;oscillator;thermal balancing;power metal-oxide-semiconductor (MOS);calibration |
公開日期: | 1-六月-2017 |
摘要: | This paper presents a method of thermal balancing for monolithic power integrated circuits (ICs). An on-chip temperature monitoring sensor that consists of a poly resistor strip in each of multiple parallel MOSFET banks is developed. A temperature-to-frequency converter (TFC) is proposed to quantize on-chip temperature. A pulse-width-modulation (PWM) methodology is developed to balance the channel temperature based on the quantization. The modulated PWM pulses control the hottest of metal-oxide-semiconductor field-effect transistor (MOSFET) bank to reduce its power dissipation and heat generation. A test chip with eight parallel MOSFET banks is fabricated in TSMC 0.25 mu m HV BCD processes, and total area is 900 x 914 mu m(2). The maximal temperature variation among the eight banks can reduce to 2.8 degrees C by the proposed thermal balancing system from 9.5 degrees C with 1.5 W dissipation. As a result, our proposed system improves the lifetime of a power MOSFET by 20%. |
URI: | http://dx.doi.org/10.3390/s17061397 http://hdl.handle.net/11536/145734 |
ISSN: | 1424-8220 |
DOI: | 10.3390/s17061397 |
期刊: | SENSORS |
Volume: | 17 |
Issue: | 6 |
起始頁: | 0 |
結束頁: | 0 |
顯示於類別: | 期刊論文 |