TDA7572 Datasheet, PDF (24/64 Pages) STMicroelectronics – 200W mono bridge PWM amplifier with built-in step-up converter

Electrical specifications
Table 12. Diagnostics (continued)
Symbol
Parameters
Ext thermal shut down
Ext thermal shut down
hysteresis
Supply I_sense
Supply sense trip voltage
AOUT levels that allow
sensing of supply current
Duration of AOUT under
threshold to allow supply
current sensing
I_ssenp
I_ssenM
Test conditions
TDA7572
Min.
Typ. Max. Units
-15% V_DIG *.36 +15%
V
Vdig*0.0
32
Vdig*0.
046
V
16
-25%
200
-500
20
25
mV
3
V
80
+25% ms
700
µA
500
nA
4.4
Voltage booster
Table 13. Voltage booster
Symbol
Parameters
Test conditions
Current mode control topology
BST_DCMAX
BST_DCMIN
BSTREF
Max duty cycle
Min duty cycle
Vref
IBIAS_BSTREF V_sense input bias current
V_{SENSE_UL}
V_sense pin allowed voltage
range
Voltage-error gain
BSTVGain
ΔDuty cycle/ΔBSTVSense
BSTDC_NOM Nominal duty cycle
C_{sense_UL}
C_sense pin allowed voltage
range
C_{sense gain}
C_sense gain
ΔDuty cycle / ΔC_sense
V_{C_SENSE} at max current
V_{Vsense =} V_reference
DC=0%
Csense_Trip
T_SS
Ilimit trip point
Soft-start step period
not yet tested (to be
confirmed)
Soft start steps
Min. Typ. Max. Units
0
-8%
-100
-0.6
0.4
55
-0.6
0.120
88
%
%
2.5
+8%
V
100 nA
58
V
0.8
1.2
%D.C.
per mV
65 %D.C.
58
V
0.350
%D.C.
per mV
0.220
0.440 V
3
ms
16
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