TDA7572 STMicroelectronics, TDA7572 Datasheet - Page 43

• Manufacturer Part Number: TDA7572
• Description: IC AMP PWM 200W BRIDGE 64HIQUAD
• Manufacturer: STMicroelectronics
• Type: Class Dr

Specifications of TDA7572

• Output Type: 1-Channel (Mono)
• Voltage - Supply: 8 V ~ 58 V
• Features: Digital Inputs, I²C, I²S, Mute, Short-Circuit and Thermal Protection, Standby
• Mounting Type: Surface Mount
• Package / Case: 64-HiQUAD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Max Output Power X Channels @ Load: -

TDA7572
7.2
consists in a clipping of current when the first threshold for V
by sink or source current to the virtual ground of modulator integrator. The cycle-by-cycle
limitation is a strong limitation. If the second V
about 2µs the half bridge is tri-stated. If this condition persists for more then four PWM
periods the modulator is definitely tri-stated. It is possible setting the threshold V
for the current limiting by the pin IlimitThreshold: the first threshold is the value voltage value
of this pin (referred to VN2.5), the second one is the same value multiply by the factor 1.5.
ANTI-POP shunt driver
The device is provided by a driver able to control an anti-pop shunt MOS which is
connectable in series or in parallel to the load. During the mute-to-play or play-to-mute
transition an external MOS is able to disconnect (MOS in series) or short (MOS in parallel)
the speaker in order to reduce the audible pop noise.
The shunt driver is able to source or sink a predefined current (see
diagram reports the temporal behave of current at the shunt pin respect to the voltage on the
mute pin in NOI
Figure 6.
In I
of byte 5. When the bit is set to 1 the current is sourced. By default the current is sourced.
2
Cbus mode it is possible to change the driver current direction only by change the bit D0
Current sourced by the shunt pin in NO I
2
Vsd+Vsdh
CBUS mode.
Isource
Vmute
DS
threshold is trespassed for more than
2
Cbus mode
DS
is trespassed. It is obtained
Table
AC00018
17). The following
DS
Modulator
voltage
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