AXPA17388

AXPA17388 4 x 45 W MOSFET Quad Bridge Power Amplifier Datasheet – Jul 2021 Description AXPA17388 is a quad bridge class AB car radio audio power amplifier designed in BCD (Bipolar, CMOS, DMOS) technology with a fully complementary P-Channel/N-Channel output structure. It has a rail to rail output voltage swing, high output current and low saturation losses, giving it an excellent distortion performance. AXPA17388 can operate down to 6V for low voltage operation to achieve 'start-stop' battery profile during engine stop enabling reduction in overall emissions. Features ▪ ▪ Multipower BCD technology with DMOS Capable to operate down to 6V (e.g. “startstop”) MOSFET output power stage ▪ ▪ Hi-Fi class low distortion ▪ Low output noise – 4 x 45W/4Ω Max. ▪ High immunity to RF noise injection – 4 x 25W/4Ω @ 14.4V, 1kHz, 10% ▪ Standby function ▪ Mute function ▪ Auto-mute at min. supply voltage detection ▪ Low external component count ▪ ▪ ▪ ▪ High output power capability: Protections: – – – No external compensation No bootstrap capacitors – – – Internally fixed gain (26dB) Output short circuit to GND, to Vs, across the load Very inductive loads Overrating chip temperature with soft thermal limiter Load dump Fortuitous open GND ESD Table 1 Device Summary Order code Package Packing AXPA17388 HZIP25 Tube HZIP25 Jul 2021 Rev 1.01 1 Contents Description ............................................................................................................................ 1 1 Block Diagram and Application Circuits ........................................................................ 4 2 Pin Description ............................................................................................................. 6 3 4 2.1 Pin Names .............................................................................................................. 6 2.2 Pin Functions .......................................................................................................... 7 Electrical Specifications ................................................................................................ 8 3.1 Absolute Maximum Ratings .................................................................................... 8 3.2 Thermal Data .......................................................................................................... 8 3.3 Electrical Characteristics ........................................................................................ 9 Functional Description ................................................................................................ 11 4.1 Overview .............................................................................................................. 11 4.2 Inputs ................................................................................................................... 11 4.3 Standby and Mute ................................................................................................ 11 4.4 SVR – Supply Voltage Rejection .......................................................................... 11 4.5 Operation Modes .................................................................................................. 12 4.5.1 Low Voltage Operation ................................................................................... 12 4.5.2 Cranks ............................................................................................................ 12 4.5.3 Advanced battery management (hybrid vehicles)............................................ 13 4.6 Protection ............................................................................................................. 14 4.6.1 Short circuits ................................................................................................... 14 4.6.2 Open circuit Operation .................................................................................... 14 4.6.3 Over-voltage and load dump ........................................................................... 14 4.6.4 Thermal protection .......................................................................................... 14 4.7 Heat sink definition ............................................................................................... 15 5 Package information ................................................................................................... 16 6 Revision History ......................................................................................................... 17 Jul 2021 Rev 1.01 2 List of Figures Figure 1 Block diagram ......................................................................................................... 4 Figure 2 Application circuit .................................................................................................... 5 Figure 3 Pin connection (top view) ........................................................................................ 6 Figure 4 SVR charge diagram ............................................................................................. 12 Figure 5 Battery cranking curve example 1 ......................................................................... 12 Figure 6 Battery cranking curve example 2 ......................................................................... 13 Figure 7 Upwards fast battery transitions diagram .............................................................. 13 Figure 8 Load dump protection diagram .............................................................................. 14 Figure 9 HZIP25 vertical mechanical data and package dimensions ................................... 16 List of Tables Table 1 Device Summary ...................................................................................................... 1 Table 2 Pin Functions ........................................................................................................... 7 Table 3 Absolute Maximum Ratings ...................................................................................... 8 Table 4 Thermal Data ........................................................................................................... 8 Table 5 Electrical Characteristics .......................................................................................... 9 Table 6 Document Revision History .................................................................................... 17 Jul 2021 Rev 1.01 3 1 Block Diagram and Application Circuits Figure 1 Block diagram Jul 2021 Rev 1.01 4 Figure 2 Application circuit VS1 C7 470F C8 0.1F VS2 6 (Vs for Bridge 1 & 2) 20 (Vs for Bridge 3 & 4) 25 NC R1 10k STBY 4 C9 1F R2 47k MUTE C10 1F 22 AXPA17388 C1 IN1 0.1F 11 IN2 C2 0.1F 12 IN3 C3 0.1F 15 IN4 C4 0.1F 14 16 ACGND C5 0.47F Jul 2021 1 10 13 SVR TAB SGND 9 8 7 Out1 5 2 3 Out2 17 18 19 Out3 21 24 23 Out4 C6 47F Rev 1.01 5 Jul 2021 TAB Rev 1.01 NC PGND4 OUT4- MUTE OUT4+ VS2 OUT3- PGND3 OUT3+ ACGND IN3 IN4 SGND IN2 IN1 SVR Pin Names OUT1+ 2.1 PGND1 Pin Description OUT1- VS1 OUT2+ STBY OUT2- PGND2 2 Figure 3 Pin connection HZIP25 6 2.2 Pin Functions Table 2 Pin Functions Jul 2021 Pin number Pin name Description 1 TAB 2 PGND2 Channel 2, output power ground 3 OUT2- Channel 2, negative output 4 STBY Stand-by 5 OUT2+ 6 VS1 7 OUT1- Channel 1, negative output 8 PGND1 Channel 1, output power ground 9 OUT1+ Channel 1, positive output 10 SVR Supply voltage rejection pin 11 IN1 Channel 1, input 12 IN2 Channel 2, input 13 SGND 14 IN4 Channel 4, input 15 IN3 Channel 3, input 16 ACGND AC ground 17 OUT3+ Channel 3, positive output 18 PGND3 Channel 3, output power ground 19 OUT3- Channel 3, negative output 20 VS2 21 OUT4+ Channel 4, positive output 22 MUTE Mute pin 23 OUT4- Channel 4, negative output 24 PGND4 Channel 4, output power ground 25 NC - Channel 2, positive output Supply voltage Signal ground Supply voltage Not Connected Rev 1.01 7 3 Electrical Specifications 3.1 Absolute Maximum Ratings Table 3 Absolute Maximum Ratings Symbol Value Unit Operating supply voltage 18 V VS (DC) DC supply voltage 28 V VS (pk) Peak supply voltage (for t = 50ms) 50 V Output peak current 4.5 A Power dissipation Tcase = 70°C 80 W Tj Junction temperature 150 °C Tstg Storage temperature -55 to 150 °C Value Unit 1 °C/W VS Io Ptot 3.2 Parameter Thermal Data Table 4 Thermal Data Symbol Rth j-case Jul 2021 Parameter Thermal resistance junction-to-case Max. Rev 1.01 8 3.3 Electrical Characteristics Refer to the test and application diagram, VS = 14.4V; RL = 4Ω; Signal Generator output impedance Rg = 600Ω; f = 1kHz; Tamb = 25°C; unless otherwise specified. Table 5 Electrical Characteristics Symbol Parameter Test conditions Min Typ Max Unit - 6 - 18 V General characteristics Vs Supply voltage range Iq Quiescent current RL = ∞ 100 180 300 mA Output offset voltage Play mode / Mute mode -90 - +90 mV -10 - +10 mV -15 - +15 mV 40 55 70 kΩ - - 1 μA 22 25 - W 37 41 - W 45 - W - 0.005 0.05 % Vos During mute ON/OFF output offset voltage dVOS ITU R-ARM weighted During standby ON/OFF output offset voltage Ri Input impedance - ISB Standby current consumption Vstby = 0 Audio performances Po Output power THD = 10% Square wave input (2Vrms) Po max Maximum output power Vs = 14.4V; RL = 4Ω VS = 15.2V; RL = 4Ω THD Distortion Po = 4W Gv Voltage gain - 25 26 27 dB dGv Channel gain unbalance - -1 - +1 dB "A" Weighted - 45 - μV eNo Output Noise Bw = 20Hz to 20kHz - 70 100 μV SVR Jul 2021 Supply voltage rejection f = 100Hz; Vr = 1Vrms 50 65 - dB fch High cut-off frequency Po = 0.5W 100 200 - kHz CT Cross talk f = 1kHz Po = 4W 65 80 - dB Rev 1.01 9 f = 10kHz Po = 4W AM Mute attenuation Po ref = 4W - 65 - dB 80 100 - dB - - 1 μA Control pin characteristics Standby pin current Vstby = 1.2V to 2.6V Standby out threshold voltage (Amp: ON) 2.6 - - V VSB in Standby in threshold voltage (Amp: OFF) - - 1.2 V VM out Mute out threshold voltage (Amp: Play) 3.5 - - V VM in Mute in threshold voltage (Amp: Mute) - - 1.2 V (Amp: Mute) Att 80dB; PO = 4W 5 5.4 5.8 V (Amp: Play) Att