company blog about TDF8546JV (NXP) I2C-Bus Controlled 4 x 45 W Best Efficiency Amplifier

TDF8546JV (NXP) I2C-Bus Controlled 4 x 45 W Best Efficiency Amplifier

[Shenzhen Mingjiada Electronics Co., Ltd.] Long-Term Supply TDF8546JV (NXP) I2C-Bus Controlled 4 x 45 W Best Efficiency Amplifier, Below is a detailed description of the amplifier TDF8546JV:

The TDF8546JV is a four-channel bridge-to-load (BTL) audio power amplifier from NXP designed for car audio systems. It features high efficiency, low distortion and high output power for a wide range of audio applications.

Part Number: TDF8546JV
Package: DBS27P
Type: Audio Power Amplifiers

TDF8546JV is one of a new generation of complementary quad Bridge-Tied Load (BTL) audio power amplifiers intended for automotive applications. TDF8546JV has a best efficiency mode with full I²C-bus controlled diagnostics, including start-up diagnostics. TDF8546JV can operate at a battery voltage as low as 6 V making this amplifier suitable for stop/start-car operation.

TDF8546JV——The new best efficiency principle uses a switch technique which reduces switching distortion. To reduce power dissipation, the new best efficiency principle uses the audio information on all four channels instead of only the front or rear signals. Dissipation is more than 65 % less than standard BTL when used for front and rear correlated audio signals. Dissipation is 35 % less than standard BTL when used for uncorrelated (delayed) audio signals between front and rear, and 17 % less for uncorrelated audio signals when the front or rear information is used.

TDF8546JV amplifier uses a complementary DMOS output stage in a Silicon-On-Insulator (SOI)- based BCD process. The DMOS output stage ensures a high power output signal with perfect sound quality. The SOI-based BCD process ensures a robust amplifier, where latch-up cannot occur, with good separation between the four independent channels, with every component isolated and without substrate currents.

Product Attributes Of TDF8546JV

Type: Class AB
Output Type: 4-Channel (Quad)
Max Output Power x Channels @ Load: 64W x 4 @ 2Ohm, 45W x 4 @ 4Ohm, 40W x 4 @ 4Ohm
Voltage - Supply: 6V ~ 18V
Mounting Type: Through Hole
Supplier Device Package: DBS27P
Package / Case: 27-SIP, Formed Leads

TDF8546JV——Features And Benefits
Stop/start-car prepared: keeps operating without audible disturbance during engine start at a battery voltage as low as 6 V
New best efficiency mode with patented low switching distortion
Extreme best efficiency mode (uses information from 4 channels) with 17 % less dissipation for uncorrelated signals compared to 2-channel best efficiency mode.
Operates in either legacy (non-I2C-bus) or I2C-bus modes (3.3 V and 5 V compliant)
Four hardware-programmable I2C-bus addresses
Can drive 2 and 4 loads
Speaker fault detection
Start-up diagnostics with load detection: open, short, present; filtered for door-slam and chatter relays
AC load (tweeter) detection with low and high current mode
Gain select after start-up without audible disturbance
Independent selectable soft mute of front and rear channels
Programmable gain (26 dB and 16 dB), independently programmable for the front and rear channels
Line driver mode supports engine start at a battery voltage as low as 6 V (16 dB and mid-tap voltage 0.25VP)
Programmable clip detect: 2 %, 5 % or 10 %
Programmable thermal pre-warning
Pin STB can be programmed/multiplexed with second-clip detect
Clip information of each channel can be directed separately to pin DIAG or pin STB
Independent enabling of thermal-, clip- or load fault information (short across the load or to VP or to ground) on pin DIAG
Loss-of-ground and open VP safe (minimum series resistance required)
All amplifier outputs short-circuit proof to ground, supply voltage and across the load (channel independent)
All pins short-circuit proof to ground
Temperature controlled gain reduction to prevent audio holes at high junction temperatures
Programmable low battery voltage detection to enable 7.5 V or 6 V minimum battery voltage operation
Overvoltage protection (load-dump safe up to VP = 50 V) with overvoltage pre-warning at 16 V
Offset detection

Application Scenario Of TDF8546JV
Car audio system: such as car radio, CD player, navigation system, etc.
Multimedia system: e.g. in-vehicle entertainment system, rear-seat entertainment system, etc.
Public broadcasting system: such as school buses, tourist buses, etc.

The TDF8546JV is a high performance four-channel BTL audio power amplifier for car audio and multimedia systems. Its high output power, low distortion and multiple protection features make it ideal for car audio applications.

Mingjiada Electronics has been supplying [TDF8546JV] audio power amplifier for a long time. For more information about the product, please check the official website of Mingjiada Electronics（https://www.integrated-ic.com/).