STA510
60V 5A POWER FULL BRIDGE
PRODUCT PREVIEW
s
MINIMUM INPUT OUTPUT PULSE WIDTH
DISTORTION
150m鈩?R
dsON
NDMOS OUTPUT STAGE
CMOS COMPATIBLE LOGIC INPUTS
THERMAL PROTECTION
WARNING OUTPUT: THERMAL, OVERLOAD
UNDER VOLTAGE PROTECTION ON V
REG
OVERVOLTAGE PROTECTION
TWO LEVELS CURRENT PROTECTION
MULTIPOWER BCD TECHNOLOGY
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s
s
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Flexiwatt27
ORDERING NUMBER: STA510
DESCRIPTION
STA510 is a monolithic full bridge stage in Multipow-
er BCD Technology. The device is particularly de-
signed to make the output stage of classD audio
amplifier capable to deliver 100W undistorted output
power on 8鈩?load. The input pins have threshold pro-
portional to V
Ibias
pin voltage. The commutation
speed of the output stage is settable with an extenal
resistor (Curref pin) to choice for each application the
best compromise of THD versus EMI and current
AUDIO APPLICATION CIRCUIT
spikes.
The overcurrent protection works in two steps, the
first one, at a lower value limits the current terminat-
ing the pulse (independently to the input) when the
current in the power output MOS reaches a first
threshold: it is aimed to act in case of overload and its
effect is to stabilize the mean current in the load to a
limit value. The second step shuts down completely
the device and restarts the power on sequence if the
current reaches a second (higher) threshold: it is
aimed to act in case of short circuit, when the first lim-
itation can fail.
SUB_GND
1,27
9
7
Q1
+
DRIVER
L
Q3
PROTECTIONS
&
LOGIC
10
11
14
12
13
19
21
-
Q2
17
DRIVER
R
REGULATOR
Q4
18
BOOTL
VCCL
C3 100nF
V
CC
INL
+3.3V
VIBIAS
PWRDIN
FAULT
R2
10K
C1
100nF
WARNING
INR
VSS
4
26
3
5
C15
100nF
OUTL
OUTL
SUB
PWGNDL
PWGNDL
BOOTR
VCCR
C16
100nF
OUTR
OUTR
C12
1碌F
L1 22碌H
C11
1000碌F
R1
10K
TRISTATE
6
R4
20鈩?/div>
C5
330pF
R5
6鈩?/div>
C6
100nF
C7
100nF
C10
470nF
8鈩?/div>
2
24
25
C4
100nF
C13
1碌F
R6
6鈩?/div>
C8
100nF
C9
100nF
VREGBOOT
VCC_REG
VREG
C2
470nF
R3
48K
24
23
20
L2 22碌H
CURREF
22
15
16
PWGNDR
PWGNDR
D03AU1508
July 2003
This is preliminary information on a new product now in development. Details are subject to change without notice.
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