tdf8599c NXP Semiconductors, tdf8599c Datasheet - Page 11

• Manufacturer Part Number: tdf8599c
• Description: I2c-bus Controlled Stereo Class-d Amplifier 136 W/8 With Full Diagnostics
• Manufacturer: NXP Semiconductors

NXP Semiconductors
TDF8599C_SDS
Product short data sheet
8.3.6 Supply voltage protection
8.4.1 Diagnostic table
8.4 Diagnostic output
UnderVoltage Protection (UVP) is activated when the supply voltage drops below the UVP
threshold. UVP triggers the UVP circuit causing the system to first mute and then stop
switching. The SVRR and SEL_MUTE pin capacitors will discharge. The information on
the MOD and ADS pins is latched while UVP is active. When the supply voltage rises
above the threshold level, the system restarts.
OverVoltage Protection (OVP) is activated when the supply voltage exceeds the OVP
threshold. The OVP (or load dump) circuit is activated and the power stages are
shutdown. The SVRR and SEL_MUTE pin capacitors will discharge. When the supply
voltage drops below the OVP threshold level the system restarts.
The diagnostic information for I
The instruction bitmap and data bytes are described in
Pins DIAG and CLIP have an open-drain output which must have an external pull-up
resistor connected to an external voltage. Pins CLIP and DIAG can show both fixed and
I
Pin DIAG goes LOW when a short-circuit to one of the amplifier outputs occurs. The
microprocessor reads the failure information using the I
for a short-circuit. These bits can be reset with the I
Even after the short has been removed, the microprocessor knows what was wrong after
reading the I
used. To read the current information, two read commands must be sent, one after
another.
When selected, pin DIAG gives the current diagnostic information. Pin DIAG is released
instantly when the failure is removed, independent of the I
Table 7.
Diagnostic
Power-on reset
UVP or OVP
Clip detection
Temperature pre-warning
OCP/WP
DCP
OTP
AC load detection; see
2
C-bus selectable information.
Available data on pins DIAG and CLIP
2
C-bus. Old information is read when a single I
All information provided in this document is subject to legal disclaimers.
Section 8.4.2.2
Rev. 1 — 5 August 2011
2
C-bus mode and non-I
I
Pin DIAG
yes
yes
no
no
yes
selectable
yes
no
2
I
C-bus mode
2
C-bus controlled stereo class-D amplifier
2
C-bus read command.
Pin CLIP
yes
no
selectable
selectable
no
no
no
selectable
2
Table 9
2
C-bus mode is shown in
C-bus. The I
2
C-bus latches.
2
C-bus read command is
and
Non-I
Pin DIAG
yes
yes
no
no
yes
yes
yes
no
TDF8599C
Table
2
C-bus bits are set
2
© NXP B.V. 2011. All rights reserved.
C-bus mode
11.
yes
yes
no
Pin CLIP
yes
no
no
no
no
Table
11 of 41
7.