STA515W STMicroelectronics, STA515W Datasheet - Page 8

• Manufacturer Part Number: STA515W
• Description: AMP, AUDIO, POWER, QUAD, POWERSO36
• Manufacturer: STMicroelectronics

Specifications of STA515W

• No. Of Channels: 4
• Output Power: 40W
• Supply Voltage Range: 10V To 36V
• Load Impedance: 8ohm
• Operating Temperature Range: 0°C To +70°C
• Amplifier Case Style: PowerSO
• No. Of Pins: 36
• Svhc: No SVHC
• Rohs Compliant: Yes

Applications information
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Applications information
The STA515W is a dual channel H-bridge that can deliver 20 W per channel into 8 Ω with
10% THD at V
The STA515W converts both DDX and binary-logic-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 DDX mode, two logic-level signals per channel are used to control the high-speed
MOSFET switches which drive the speaker load in a bridge configuration, according to the
damped ternary modulation operation.
In binary mode, both full-bridge and half-bridge modes are supported.
The STA515W includes overcurrent and thermal protection as well as an undervoltage
lockout with automatic recovery. A thermal warning status is also provided.
Figure 5.
Figure 6.
Logic interface and decode
The STA515W power outputs are controlled using one or two logic-level timing signals. In
order to provide a proper logic interface, pin VL must operate at the same voltage as the
DDX control logic supply.
Block diagram for DDX or binary modes
Block diagram for binary half-bridge mode
CC
= 18 V with high efficiency.
TRISTATE
TRISTATE
THWARN
THWARN
PWRDN
PWRDN
INR[1,2]
INR[1,2]
INL[1,2]
INL[1,2]
FAULT
FAULT
VL
VL
Doc ID 11079 Rev 2
Regulators
Regulators
Logic
interface
and
decode
Protection
circuit
Logic
interface
and
decode
Protection
circuit
Left
H-bridge
Right
H-bridge
Left A
bridge
Left B
bridge
Right A
bridge
Right B
bridge
OUTPL
OUTPR
OUTNL
OUTNR
OUTPL
OUTNL
OUTPR
OUTNR
STA515W