MPS EVQ7795-R-00A Manual

DESCRIPTION
The EVQ7795-R-00A is an evaluation board
designed to demonstrate the capabilities of the
MPQ7795-AEC1, an automotive-grade, low-
EMI, differential analog input, Class D audio
amplifier with I 2 C diagnostics. The MPQ7795
can drive a mono speaker in a bridge-tied load
(BTL) configuration.
The MPQ7795 employs a BTL structure to
deliver 24.5W of power to 4Ω speakers with a
14.4V power supply. MPS's Class D audio
amplifiers exhibit the high fidelity of Class AB
amplifiers at high efficiency.
The selectable switching frequency (f
set to 330kHz, 384kHz, 470kHz, or 2.2MHz,
and can achieve >90% efficiency at both
470kHz and 2.2MHz.
The MPQ7795 integrates the load diagnostic
function that detects open load, short load, load
short to GND, load short to PVDD. The
diagnostic runs when the device is enabled,
which helps to protect the load and the device.
Full protection features include over-current
protection (OCP), under-voltage protection,
thermal shutdown,
limiting.
The adjustable power limit (PLIMIT) function
sets the output peak-to-peak voltage limit
(V ) by limiting the duty cycle to a fixed
PP_LIMIT
maximum value. V
PLIMIT
virtual voltage rail. The power supply input
(PVDD) voltage (V
PVDD
The EVQ7795-R-00A is a fully assembled and
tested evaluation board. The MPQ7795 is a
fully integrated audio amplifier that reduces the
solution size, and is available in a QFN-24
(4mmx4mm) package.
ELECTRICAL SPECIFICATIONS
Parameter Symbol
Input voltage V
EMI
EVQ7795-R-00A Rev. 1.0
10/21/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
Audio Amplifier, AEC-Q100 Evaluation Board
) can be
SW
and adjustable power
can be considered the
) is greater than V
PLIMIT
Value Units
5 to 36 V
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© 2021 MPS. All Rights Reserved.
2.2MHz Low EMI 24.5W Mono BTL Class-D
FEATURES

5V to 36V Operating Input Voltage (V
Range

±5A Peak Current Output

Differential Analog Input

42V Load Dump

Low 0.02uA Standby Current

Low 6.5mA Idle Current

330kHz, 384kHz, 470kHz, or 2.2MHz
Selectable Switching Frequency (f

Delivers 24.5W into 4Ω Load with 14.4V
Power VDD (PVDD)

High Power Efficiency:
o Up to 92.6% Efficiency for 8Ω Load
o Up to 90.4% Efficiency for 4Ω Load

150mΩ power MOSFETs

Start-Up/Shutdown Pop-Noise Reduction

Selectable Voltage Gain

Adjustable Power Limiter

Open/Short Load Detection

Output Short to PVDD/Ground Detection

Over-Current Protection (OCP)

Under-Voltage Protection (UVP)

Thermal Shutdown

Status Reporting via the I
Fault Output Pin (FAULT#)

Low EMI Meets CISPR 25 Class 5
Specifications with Long Output Cable

Communicates with Microcontroller Unit
(MCU) via I

Supports 2Ω to 16Ω Speakers

Available in a QFN-24 (4mmx4mm)
Package
.

Available in AEC-Q100 Grade 1
APPLICATIONS

Automotive Emergency Call (eCall)
Systems

Telematics Systems

Audio Infotainment Systems

Automotive Clusters
All MPS parts are lead-free, halogen-free, and adhere to the RoHS
directive. For MPS green status, please visit the MPS website under
Quality Assurance. "MPS", the MPS logo, and "Simple, Easy Solutions" are
trademarks of Monolithic Power Systems, Inc. or its subsidiaries.
EVQ7795-R-00A
2 C Interface and
2 C Interface
)
IN
)
SW
1