TPA3118d2 Or TPA3116 Amplifier Board Circuit + Shell 3D

Table of Contents

Desktop TPA3118d2 or TPA3116 amplifier board circuit diagram PCB + Shell 3D model, high quality power amplifier, open source carefully designed TPA3116 desktop HIFI amplifier from circuit to shell, hoping that more people can obtain a good listening experience at a low cost and enjoy the fun of DIY. High-value, small-volume HIFI amplifier, suitable for daily desktop HIFI use.

This design uses TPA3116 as the audio power amplifier to drive the speaker for sound, while also compatible with the TPA3118 chip. The amplifier peripheral circuit heavily references the DATASHEET, focusing on the design of the pre-stage circuit and pre-stage power supply circuit to achieve extremely low noise.

Finished product size (including volume knob):

Length: 110mm
Width: 87.8mm
Height: 30.8mm

Heat sink size:

Length: 20mm
Width: 15mm
Height: 18mm

Schematic TPA3118d2 or TPA3116 amplifier board circuit

Schematic Amplifier Tpa3118D2 Or Tpa3116 Board Circuit Shell 3D — Schematic Power Amplifier

Schematic Pre-Amplifier Tpa3118D2 Or Tpa3116 Board Circuit + Shell 3D — Schematic Pre-Amplifier

Schematic Supply Tpa3118D2 Or Tpa3116 Amplifier Board Circuit + Shell 3D — Schematic Power Supply

About IC TPA3116

The TPA3116 is a high-performance Class D amplifier chip designed for audio applications. It offers high efficiency and low distortion, making it ideal for use in audio amplifiers, home theater systems, and car audio systems. The TPA3116 is known for its excellent sound quality and robust performance, with the ability to deliver up to 50 watts of power per channel. It also features built-in protection circuits to safeguard against overheating, overcurrent, and short circuits, ensuring reliable operation and longevity. Overall, the TPA3116 is a versatile and reliable amplifier chip that is widely used in a variety of audio applications.

About IC TPA3118

The TPA3118 is a high-performance Class D audio amplifier integrated circuit that is commonly used in audio applications. It offers high efficiency, low distortion, and a wide dynamic range, making it ideal for use in audio systems that require high-quality sound reproduction. The TPA3118 features built-in protection circuits to safeguard against overcurrent, overtemperature, and undervoltage conditions, ensuring the safety and longevity of the amplifier. With its compact size and low power consumption, the TPA3118 is a popular choice for audio amplification in portable devices, home entertainment systems, and automotive audio systems. Its versatility and performance make it a reliable and cost-effective solution for a wide range of audio applications.

BOM TPA3118d2 or TPA3116 amplifier board circuit

Parts	Value	Description	Quantity
Resistors
R1,R2,R3,R4	3.3Ω (3R3)	R0805 – SMD resistor	4
R5	8.06kΩ (88H or 8061)	R0603 – SMD resistor	1
R6,R9,R10,R11,R12,R16,R17	100kΩ (104)	R0603 – SMD resistor	7
R7,R31,R33,R34,R35	2kΩ (202)	R0603 – SMD resistor	5
R8	1.5kΩ (152)	R0603 – SMD resistor	1
R13	220kΩ (224)	R0603 – SMD resistor	1
R14,R19,R20,R21,R27	10kΩ (103)	R0603 – SMD resistor	5
R15,R22,R23,R24,R25,R28,R29,R30,R32	1kΩ (102)	R0603 – SMD resistor	9
R18	20kΩ (203)	R0603 – SMD resistor	1
R26	750Ω (751)	R0603 – SMD resistor	1
R36,R37	4.7kΩ (472)	R0603 – SMD resistor	2
Capacitors
C1,C4,C5,C9	10nF	C0805 – SMD capacitor	4
C2,C3,C7,C8	680nF	C0805 – SMD capacitor	4
C6,C16	100pF	C0402 – SMD capacitor	2
C10,C60,C61	100uF/50V	Electrolytic capacitor	3
C11,C12,C14,C23,C24,C27,C28,C30, C31,C33,C47,C48,C49,C55,C57,C58	100nF50V	C0603 – SMD capacitor	16
C13,C29,C54	10uF/50V	C1206 – SMD capacitor	3
C15,C34,C41,C46	22uF/25V	C0805 – SMD capacitor	4
C17,C22	1000uF/35V	Electrolytic capacitor	2
C18,C19,C20,C21	220nF	C0805 – SMD capacitor	4
C25,C26	1nF	C0402 – SMD capacitor	2
C32,C35	47uF/16V	Electrolytic capacitor	2
C36,C37,C38,C39,C40,C50,C51	1uF	C0603 – SMD capacitor	7
C42,C43,C44,C45	1.8nF	C0603 – SMD capacitor	4
C52,C59	10uF	C0805 – SMD capacitor	2
C53,C56	10nF	C0402 – SMD capacitor	2
Miscellaneous
CN1,CN2	WJ2EDGRC-5.08-2P	5.08mm 2 Pin Pluggable System Terminal Block	2
CN3	PJ-313D	3.5mm Headphone Jack SMD	1
L1,L2,L3,L4	10uH	7.8A SMD, 11.5x10mm Power Inductor	4
L5,L7,L8	15uH	3A SMD, 6.6x7mm Power Inductor	3
L6	GZ2012D601TF	300mΩ 600Ω@100MHz 0805 Ferrite Bead	1
RW1	50K (503)	RK097 – Dual potentiometer	1
SW1	MT-0-102-C004-N004-RS	Single Pole Double Throw (SPDT) Bend insert 5A Toggle Switch	1
U1	RCA connector dual	RCA dual connector – audio input	1
Semiconductors
D1,D7,D8	SMAJ16A	16V SMA(DO-214AC) ESD and Surge Protection (TVS/ESD)	3
D2	SS14	40V 1A SMA(DO-214AC) Schottky Diode	1
D3,D4,D6	SM4007PL	1A SOD-123FL Diode	3
D5,D9	SMAJ26A	26V SMA(DO-214AC) ESD and Surge Protection (TVS/ESD)	2
D10,D11	SS34	40V 3A SMA(DO-214AC) Schottky Diode	2
DC1	DC-005-5A-2.0	6.2mm DC Power Connector	1
LDO1	CJ7805 3%	1.5A Fixed 5V Positive TO-252-2(DPAK) Voltage Regulator Linear, Low Drop Out (LDO)	1
LED1,LED2	KT-0603W	LED0603 – White	2
Q1	S8050 J3Y	25V 500mA NPN SOT-23 Bipolar Transistor (BJT)	1
Q2	SS8550 Y2	25V 1.5A PNP SOT-23 Bipolar Transistor (BJT)	1
U2,U3	TPS54302DDCR	Step-down type Adjustable 3A 4.5V~28V TSOT-23-6 DC-DC Converter	2
U4	TPA3118D2DAPR or TPA3116D2DADR	Dual Channel 30Wx2@8Ω Class D Amplifier HTSSOP-32-EP-6.1mm Audio Amplifier Dual Channel 50Wx2@4Ω Class D Amplifier HTSSOP-32-6.1mm Audio Amplifier	1
U5	TPS5430DDAR	Step-down type Adjustable 3A 5.5V~36V SOIC-8-EP DC-DC Converter	1
U6	78M15	800mA Fixed 15V Positive TO-252-2L Voltage Regulator Linear, Low Drop Out (LDO)	1
U7	CJ7915	1.5A Fixed 15V Negative TO-252-2(DPAK) Voltage Regulator – Linear, Low Drop Out (LDO)	1
U8,U9	NJM5532DD	Dual DIP-8 Operational Amplifier	2