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TDA8950是NXP半导体公司推出的新型高效率D类音频功率放大器,在4Ω负载时典型输出功率为2×150w。该器件主要特点:工作电压范围宽,从±12.5V到±40V:立体声全差分输入,可组成单端(single-ended)放大器或桥式(BTL)放大器;高功率输出:在Vp=±37V、RL=4Ω时,作为单端放大器可输出2×150W,若Vp=±39时,则可输出2×170W:在Vp=±37V、RL=8Ω时,作为BTL放大器可输出300W:由于有BD调制,在BTL放大器中噪声很低;开机及关机时无“砰”的一响;零死区时间PWM输出开关;固定频率:时钟开关频率可外同步;高效率;静态电流小;完善的保护功能:过压保护、输出电流限制
The TDA8950 is a new high efficiency Class D audio power amplifier from NXP Semiconductors with a typical output power of 2 × 150 w at 4 Ω load. The device features: Wide operating voltage range from ± 12.5V to ± 40V: Stereo fully differential input for single-ended or bridge-type (BTL) amplifiers High power output: Vp = ± 37V , RL = 4Ω, it can output 2 × 150W as a single-ended amplifier, 2 × 170W if Vp = ± 39: 300W as a BTL amplifier when Vp = ± 37V and RL = 8Ω: BD modulation, the noise in BTL amplifier is very low; there is no “ping” during power-on and power-off; zero dead time PWM output switch; fixed frequency: clock switching frequency can be external synchronization; high efficiency; Perfect protection function: over-voltage protection, output current limit