PAM8320 EVB User Guide PAM8320 BTL-EV Board User Guide AE Department 1. Revision Information Date Revision Description 2013/08 V1.0 Initial release Comment This application note contains new product information. Diodes, Inc. reserves the right to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. PAM8320 Document number: DSxxxxx Rev. 1 - 0 1 of 7 www.diodes.com August 2013 © Diodes Incorporated PAM8320 EVB User Guide 2. Key Features ◆ 20W/Ch into 4Ω BTL Load from 12V Supply ◆ Operate from 4.5V to 15V ◆ Single-Ended Analog Inputs ◆ No Pop Noise for Start-up and Shut-down Sequences ◆ Internal Oscillator (No External Components Required) ◆ High Efficient Class-D Operation Eliminates Need for Heat Sinks ◆ Thermal and Short-Circuit Protection with Auto Recovery ◆ Space-Saving Surface-Mount 16-Pin ESOP Package ◆ Pb-Free Package 3. EV Board Schematic C1 SD C2 C3 Vin 1 AVCC 2 SD 3 IC1 SD C4 Audio R1 2 3 C5 4 5 6 C6 7 8 PVCCN PGNDN SD OUTN IN BSN VCM PAM8320 1 AGND AGND AVCC MUTE BSP VCLAMP PVCCP OUTP PGNDP 16 14 C10 11 10 C14 C12 13 12 OUTN FB1 15 AVCC R2 Vin C13 Mute C11 C15 OUTP FB2 9 Mute Vin C7 C8 1 AVCC 2 Mute 3 C9 Figure 1 This application note contains new product information. Diodes, Inc. reserves the right to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. PAM8320 Document number: DSxxxxx Rev. 1 - 0 2 of 7 www.diodes.com August 2013 © Diodes Incorporated PAM8320 EVB User Guide 4. EV-Board PAM8320 EB2CAA Description PAM8320 EB2CAA is designed for evaluated PAM8320. PAM8320 is a 20W.Class-D amplifier for driving a mono speaker in a bridge-tied-load configuration. The PAM8320 can drive speaker as low as 4Ω. Due to the low power dissipation and high efficiency the device can be used without any external heat sink when playing music. . 5. EV Board View and Jack Description Top Layer Power Supply Ground Test PIN Single-ended signal Input Output negative Test PIN Output Positive Test PIN SD Control MUTE Control This application note contains new product information. Diodes, Inc. reserves the right to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. PAM8320 Document number: DSxxxxx Rev. 1 - 0 3 of 7 www.diodes.com August 2013 © Diodes Incorporated PAM8320 EVB User Guide Bottom Layer Copper Exposed for Thermal Transfer 6. EV board operational sequence: a. Connect SD to a high and MUTE to a low for normal operation b. Connect audio input from audio input jack (single-end signal ) c. Connect the loading(speaker or power resistor) to the output jack d. Power on: 4.5V to 15V DC power supply This application note contains new product information. Diodes, Inc. reserves the right to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. PAM8320 Document number: DSxxxxx Rev. 1 - 0 4 of 7 www.diodes.com August 2013 © Diodes Incorporated PAM8320 EVB User Guide 7. EV Board BOM List Item Value Type Rating Description Vender and port C4 0.47uF X5R/X7R, Ceramic/0603 25V Input coupling CAP EMK107B7474KA-T C10, C11 1uF X5R/X7R, Ceramic/0603 25V High side driver bootstrap CAP TMK107B7105KA-T C3, C7 0.1uF X5R/X7R, Ceramic/0603 25V PVCC coupling CAP, UMK212B7104KG-T C2, C8 10uF X5R/X7R, Ceramic/1210 25V PVCC main coupling CAP, TMK316AB7106KL-T C1, C9 470uF Electrolytic 25V Power supply decoupling CAP C6 1uF X5R/X7R, Ceramic/0603 16V Vclamp coupling CAP EMK107B7105KA-T C5 1uF X5R/X7R, Ceramic/0603 16V Internal VCM decoupling CAP EMK107B7105KA-T C12 0.1uF X5R/X7R, Ceramic/0603 25V AVCC coupling CAP UMK212B7104KG-T C13 10uF X5R/X7R, Ceramic/1210 25V AVCC main coupling CAP TMK316AB7106KL-T R1 0ohm 0603 1% Input Resistor R2 10Ω 0805 5% Separate AVCC from PVCC FB1, FB2 600Ω 1206 C14, C15 IC1 1nF PM8320 X5R/X7R, Ceramic/0603 For EMI eliminate components 25V UMK107SD102KA-T form a FB-CAP filter SOP-16L(EP) Note：For good performance, out+ and out- need add a resistor to ground, a 10kΩ resistor is recommend. This application note contains new product information. Diodes, Inc. reserves the right to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. PAM8320 Document number: DSxxxxx Rev. 1 - 0 5 of 7 www.diodes.com August 2013 © Diodes Incorporated PAM8320 EVB User Guide 8. PCB Layout Example Top layer This application note contains new product information. Diodes, Inc. reserves the right to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. PAM8320 Document number: DSxxxxx Rev. 1 - 0 6 of 7 www.diodes.com August 2013 © Diodes Incorporated PAM8320 EVB User Guide Bottom layer This application note contains new product information. Diodes, Inc. reserves the right to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. PAM8320 Document number: DSxxxxx Rev. 1 - 0 7 of 7 www.diodes.com August 2013 © Diodes Incorporated