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TPA3140D2 INDUCTOR FREE 10W STEREO CLASS-D AMPLIFIER TPA3140D2 Inductor Free Class-D Audio Amplifier Features Benefits • Inductor Free operation • Very Low BOM cost and small board space • Advanced Non-Clipping Gain Limiter (AGL) • Low THD at high power and speaker protection • Closed Loop Power Stage • High Fidelity Audio, Low PSRR • Speaker Guard DC Protection • Protect speaker against DC failure • Very Low Idle Losses • Ideal for battery operation • Low Voltage Support • Works for 12V and 2S battery systems • P2P TPA3140 (10WX2) and TPA3144 (6Wx2) • Scalable Design • TSSOP Package • Flow through Layout Applications • • • • • • TV BT Speakers Wireless Speakers Mini Speakers USB Speakers Musical instruments Analog Input Mid Power Amplifier 70W TPA3116D2 Power Output Per Channel 50W 50W Stereo Pad up (heatsink) 30W TPA3118D2 30W Stereo TPA3132D2 TPA3110D2 25W Stereo 15W Stereo Power Limiter 15W TPA3004D2 12W Stereo Volume Control TPA3140 TPA3130D2 TPA3111D1 TPA3131D2 15W Stereo 10W Stereo, AGL 10W Stereo 10W Mono TPA3144 TPA3113D2 5W 6W Stereo 6W Stereo, AGL P2P Compatible QFN PKG P2P Compatible TSSOP PKG Inductor Free TPA3003D2 3W Stereo 4.5V -15V 4.5V -26V 8V -26V NEW EXISTING Preview Competitive Landscape TPA3110LD2 EMST NE3150 Reported Customers Switch Frequency Strength ON Bright OB6220 Concern Weakness TPA3140 PAM8006 Chang Hong N/A CVT/Skyworth CVT /KTC 310kHz 280kHz 260kHz 300kHz 280~384KHz No Yes Yes No YES 25ns 30ns No details 28nS Edge rate control No Details 3 ~ 4dB Margin N/A Spread Spectrum PWM Slew Rate EMI Performance 5 ~ 10dB above the limit Margin 2 ~ 3dB Margin > 4dB Margin (wrong setup) AGL Function No No No Yes YES Low Voltage Support No No No Yes YES Thermal Foldback No No No No YES Low Idle Losses No No No No YES 4PCS Inductors Cost 4PCS Ferrite Bead cost $0.16 $0.04 4 TPA3140 Block Diagram Spread spectrum Integrated PLL Control AGL control 4.5V-14.4V operation 60uV idle channel noise Thermal fold back Low Idle losses 5 Device Summary • TPA3140 is the next generation of TPA3110 family. Industry’s first mid power (10Wx2) amplifier inductor free up to 1meter speaker cable. • For A/C powered systems like TV, dock and PC speakers, TPA3140 with Spread Spectrum provide excellent EMI improvement to replace inductors with ferrite beads even for longer speaker cables as long as 1 meter but without losing audio fidelity. This will help to save $0.12 of BOM. Device achieved 60uV idle channel noise. • For battery powered systems like BT speakers, portable audio systems with a minimum supply of 4.5V combined with low idle losses TPA3140 is ideal for battery operations and provide longer battery life. TPA3110 require a minimum of 8V. • TPA3140 supports Auto Gain Limiter (AGL) allows non-clipping power limiting and PLIMIT for clipping power limiting. • Device has thermal fold back function which allows playback of audio at lower levels when device temperature rises to thermal shutdown levels. It simplifies the thermal design of the board. TPA3140/44 Package Power Inductor Free Idle channel noise AGL PLIMIT Thermal Fold back TPA3140 10Wx2 YES 60uV YES YES YES TSSOP: 28-pin 9.7mmX 4.4 mm TPA3144 6Wx2 YES 60uV YES YES YES TSSOP: 28-pin 9.7mmX 4.4 mm TPA3140/4 Features Speaker Protection Inductor Free Operation Improved EMI Inductor free Operation Spread Spectrum Edge rate control Advanced Loop Filter Non-Clipping AGL Non-clipping power limiter Variable Threshold Attack/Decay Rate Non-clipping Benefits Protects Speaker Better THD Low Idle losses Battery Friendly Operation Results in : Lower voltage (4.5V) Support Low Idle Losses Inductor free Efficient class-D operation Less charging /discharging of inductors Benefits Longer Battery Operation Start your eval today! • Low cost and easy to use Evaluation Modules (EVMs) are available for each device in the PCM186x family: $99 – TPA3140D2EVM – TPA3144D2EVM • Visit estore.ti.com to order your EVM today TPA1340D2 EVM TPA3140 Inductor Free Class-D Audio Amplifier Features • Inductor Free operation • Advanced Non-Clipping Gain Limiter (AGL) • Closed Loop Power Stage Discovery Questions • Speaker-Guard DC Protection • Ultra-Low Idle Loss • Low Voltage Support (up to 4.5V) for 12V and 2S Pricing & Availability battery systems • Up to 10WX2 continuos power output • 28 pin TSSOP package Support TPA3140 Inductor Free Class-D Audio Amplifier Features Discovery Questions Pricing & Availability • Is this a new technology? Yes. inductor Free technology from TI • What is inductor Free? Inductor Free technology supports inductor free operation for most of the popular applications. Major BOM cost savings • What is AGL function? This Auto Gain Limiter is a special function in the device that provides non-clipping power limiter. This smart-PGA based smooth limiter protects speaker, limits power and still deliver non-clipping low THD • Is this the next gen TPA3110? The power levels are same as TPA3110. Feature set and hence pricing is much different than TPA3110. So this not price optimized replacement for TPA3110, but a major improvement TPA3140 Inductor Free Class-D Audio Amplifier Features Discovery Questions Pricing Availability Resources Product Info: TPA3140 Pricing 1Ku: $1.2 Availability: – Samples/EVM Nov 2014 – Full production April 2015 TPA3140 Inducto Free Class-D Audio Amplifier • Why were these parts developed? – To provide inductor free operation of class D for application that require low BOM , low board space – Protect small speakers – Support battery operation – High Performance amplifier with high fidelity sound – Supports wall adapters without degrading performance • What differentiates this part? – iFree operation gives low BOM cost and saves board space – Speaker guard Auto Gain Limiter protects small speaker and limit the power without THD degradation – Low idle losses, low voltage support (4.5V) will help with battery operation – High PSRR to support poor supply