sta510a13tr STMicroelectronics, sta510a13tr Datasheet - Page 10

• Manufacturer Part Number: sta510a13tr
• Description: 44-volt, 5.5-amp, Quad Power Half Bridge
• Manufacturer: STMicroelectronics

Technical information
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4.1
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Technical information
The STA510A is a dual channel H-bridge that is able to deliver 100 W per channel (into
R
in conjunction with a pulse-width modulator driver such as the STA321 or STA309A.
The STA510A converts ternary-, phase-shift- or binary-controlled PWM signals into audio
power at the load. It includes a logic interface, integrated bridge drivers, high efficiency
MOSFET outputs and thermal and short-circuit protection circuitry.
In differential mode (ternary, phase-shift or binary differential), two logic level signals per
channel are used to control high-speed MOSFET switches to connect the speaker load to
the input supply or to ground in a bridge configuration, according to the damped ternary
modulation operation.
In binary mode, both full bridge and half bridge modes are supported. The STA510A
includes overcurrent and thermal protection as well as an undervoltage lockout with
automatic recovery. A thermal warning status is also provided.
Figure 6.
Figure 7.
Logic interface and decode
The STA510A power outputs are controlled using one or two logic-level timing signals. In
order to provide a proper logic interface, the VL input must operate at the same voltage as
the DDX control logic supply.
L
= 6 Ω with THD = 10% and V
Block diagram of full-bridge DDX
Block diagram of binary half-bridge mode
TRISTATE
TRISTATE
THWARN
THWARN
PWRDN
PWRDN
INR[1,2]
INR[1,2]
INL[1,2]
INL[1,2]
FAULT
FAULT
VL
VL
Doc ID 11077 Rev 2
CC
Regulators
Protection
Regulators
Protection
Logic
interface
and
decode
Logic
interface
and
decode
= 36 V) of audio output power very efficiently. It operates
®
or binary mode
Left
H-bridge
LeftA
½-bridge
LeftB
½-bridge
RightA
½-bridge
RightB
½-bridge
Right
H-bridge
OUTPL
OUTNL
OUTPR
OUTNR
OUTPL
OUTNL
OUTPR
OUTNR
STA510A