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| 型號(hào)： | TDA8939 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Zero dead time Class-D 7.5 A power comparator |
| 中文描述： | 零死時(shí)間D類7.5甲功率比較 |
| 文件頁(yè)數(shù)： | 10/21頁(yè) |
| 文件大小： | 99K |
| 代理商： | TDA8939 |
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9397 750 13023
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Objective data sheet
Rev. 01 — 22 April 2004
10 of 21
Philips Semiconductors
TDA8939
Zero dead time Class-D 7.5 A power comparator
[1]
When the supply voltage is below
±
12.5 V the PWM outputs will not be able to switch to the high side at the first PWM cycle.
[2]
OTP, OCP and/or OVP protection activated.
12. Dynamic characteristics
[1]
Output power measured across the loudspeaker load. Power measurement based on indirect measurement by measuring the R
DS_ON
.
Temperature protection
T
diag
Overcurrent protection
I
prot
diagnostic trigger temperature
V
DIAGN
= V
OL
150
-
-
°
C
diagnostic and protection trigger
current
Overvoltage protection
V
DD(max)
diagnostic and protection trigger
maximum supply voltage
V
DIAGN
= V
OL
7.5
-
-
A
V
DIAGN
= V
OL
±
30
±
33
-
V
Table 10:
V
P
=
±
25 V; f
carrier
= 384 kHz; T
amb
= 25
°
C; unless otherwise specified.
Symbol
Parameter
Static characteristics
…continued
Conditions
Min
Typ
Max
Unit
Table 11:
V
P
=
±
25 V; T
amb
= 25
°
C; f
carrier
= 384 kHz; see also
Figure 8
for definitions.
Symbol
Parameter
PWM output
t
r
rise time output voltage
t
f
fall time output voltage
t
dead
dead time
t
r(LH)
large signal response time
LOW-to-HIGH transition at
output
t
r(HL)
large signal response time
HIGH-to-LOW transition at
output
t
W(min)
minimal pulse width
R
DS_ON
R
DS_ON
output transistors
η
efficiency
Dynamic characteristics
Conditions
Min
Typ
Max
Unit
-
-
-
-
20
20
0
90
-
-
-
-
ns
ns
ns
ns
input amplitude = 3.3 V
input amplitude = 3.3 V
-
90
-
ns
-
-
-
150
0.2
-
-
0.3
90
ns
-
P
o
= P
rated
[1]
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