Showing posts with label w. Show all posts
Showing posts with label w. Show all posts
Monday, September 8, 2014
2 x 23 W high efficiency car radio power amplifier
FEATURES:
Low dissipation due to switching from Single-Ended (SE) to Bridge-Tied Load (BTL) mode
High Common Mode Rejection Ratio (CMRR)
Mute/standby/operating/SE-only (mode select pin)
Zero crossing mute and standby circuit
Load dump protection circuit
Short-circuit safe to ground, to supply voltage and across load
Loudspeaker protection circuit
Device switches to single-ended operation at excessive junction temperatures.
GENERAL DESCRIPTION:
The TDA1561Q is a monolithic power amplifier in a 13 lead single-in-line (SIL) plastic power package. It contains two identical 23 W amplifiers. The dissipation is minimized by switching from SE to BTL mode, only when a higher output voltage swing is needed. The device is primarily developed for car radio applications.
Circuit Diagram:
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| 2 x 23 W high efficiency car radio power amplifier |
Datasheet for TDA1561Q: Download
Saturday, September 6, 2014
4 x 50 W TDA7567
Features:
Multipower BCD technology
MOSFET output power stage
DMOS power output
Differential Input
New high efficiency (class SB)
High output power capability 4x28 W/4 @
14.4 V, 1 kHz, 10% THD, 4x50 W MAX power
Max. output power 4x72 W/2
Full I2C bus driving:
Independent front/rear soft play/mute
Selectable gain 26 dB /16 dB (for low noise line output function)
High efficiency enable/disable
I2C bus digital diagnostics (including DC and AC load detection)
Operates both in I2C and non-I2C bus mode
Two selectable I2C bus addresses
Full fault protection
DC offset detection
Four independent short circuit protection
Clipping detector pin with selectable threshold (2 %/10 %)
Standby/mute pin
Linear thermal shutdown with multiple thermal warning
ESD protection
Description:
The TDA7567PD is a new BCD technology quad bridge power amplifier in PowerSO36 package specially intended for automotive applications.Thanks to the DMOS output stage the TDA7567PD has a very low distortion allowing a clear powerful sound. Among the features, its superior efficiency performance coming from the internal exclusive structure, makes it the most suitable device to simplify the thermal management in high power sets. The dissipated output power under average listening condition is in fact reduced up to 50 % when compared to the level provided by conventional class AB solutions. This device is equipped with a full diagnostics array that communicates the status of each speaker through the I2C bus.The I2C bus can be disabled and the device can be controlled by standby/mute pin.
Circuit Diagram
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| 4 x 50 W TDA7567 |
Friday, September 5, 2014
4 W audio power amplifier with DC volume control
GENERAL DESCRIPTION:
Features:
Datasheet for TDA1013B: Download
The TDA1013B is an integrated audio amplifier circuit with DC volume control, encapsulated in a 9-lead single in-line (SIL) plastic package. The wide supply voltage range makes this circuit ideal for applications in mains and battery-fed apparatus such as television receivers and record players. The DC volume control stage has a logarithmic control characteristic with a range of more than 80 dB; control is by means of a DC voltage variable between 2 and 6.5 V. The audio amplifier has a well defined open loop gain and a fixed integrated closed loop. This device requires only a few external components and offers stability and performance. 4 W audio power amplifier with DC volume control
Features:
- Few external components
- Wide supply voltage range
- Wide control range
- Pin compatible with TDA1013A
- Fixed gain
- High signal-to-noise ratio
- Thermal protection
- power ground
- amplifier output
- supply voltage
- electronic filter
- amplifier input
- control unit output
- control voltage
- control unit input
- signal ground (substrate)
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| 4 W audio power amplifier with DC volume control |
Thursday, September 4, 2014
2 3 W Mono power amplifier schematic
This amplifier circuit using ic BA534 as a main amplifier, manufactured by ROHM ic, and packaged in SIP1-8. This amplifier circuit has a maximum output of 2.3 Watts with 4 Ohm impedance. Frequency response is between 30Hz to 18KHz. For the voltage needed at least 9 Volt and 13 Volt maximum. For a list of components can be seen below.
R1 = 50K trim
R2 = 33K
R3 = 68R
C1 = 2.2uF
C2 = 220uF
C3 = 100uF
C4 = 47uF
C5 = 470uF
C6 = 100uF
C7 = 47uF
C8 = 100n
U1 = BA534
Wednesday, September 3, 2014
50 W high performance hi fi amplifier
GENERAL DESCRIPTION
The TDA1514A integrated circuit is a hi-fi power amplifier for use as a building block in radio, tv and other audio applications. The high performance of the IC meets the requirements of digital sources (e.g. Compact Disc equipment). The circuit is totally protected, the two output transistors both having thermal and SOAR protection (see Fig.3). The circuit also has a mute function that can be arranged for a period after power-on with a delay time fixed by external components. The device is intended for symmetrical power supplies but an asymmetrical supply may also be used.
Features
- High output power
- Low harmonic distortion
- Low intermodulation distortion
- Low offset voltage
- Good ripple rejection
- Mute/stand-by facilities
- Thermal protection
- Protected against electrostatic discharge
- No switch-on or switch-off clicks
- Very low thermal resistance
- Safe Operating Area (SOAR) protection.
Circuit Diagram for 50 W high performance hi-fi amplifier:
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| 50 W high performance hi-fi amplifier circuit diagram |
Friday, August 22, 2014
TOP245Y 24 W Primary–side Regulated Flyback Power Supply
TOP245Y 24 W Primary–side Regulated Flyback Power Supply Circuit
This document is an engineering report giving performance characteristics of a 24 W Flyback converter – 8 V @ 3 A. This design uses TOPSwitch-GX – an integrated IC comprising a high voltage MOSFET, and PWM controller.This document contains power supply specification, schematic, bill-of-materials, transformer documentation, printed schema layout, and performance data. A photo of the power supply prototype is shown in Figure above.
Get More Here>>
Get More Here>>
| 24 W Primary–side Regulated Flyback Power Supply using TOP245Y |
Monday, August 18, 2014
12 to 20 W Audio Power Amplifier
Features:
- Thermal protection
- Low intermodulationa distortion
- Low transient intermodulation distortion
- Built-in output current limiter
- Low input offset voltage
- Output stage with low cross-over distortion
- SIL power package
Circuit Diagram:
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| Circuit Diagram |
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