Maxim’s MAX16928 is a highly integrated automotive TFT-LCD Display power supply that integrates a boost converter (up to 6W, output up to 18V), a 1.8V/3.3V regulator controller (500mA current) and two gate Polar voltage regulator, the positive gate voltage regulator can provide 20mA current at 28V, work at high frequency 2.2MHz, and provide functions such as soft start and over-temperature shutdown. Mainly used in car dashboards, car center information Displays and Car Navigation Systems. This article describes the main features of the MAX16928, a block diagram, a multistage charge pump circuit for positive and negative output voltages, and a typical application circuit.
Automotive TFT-LCD Power Supply with Boost Converter and Gate Voltage Regulators
The MAX16928 is a highly integrated power supply for automotive TFT-LCD applications. The device integrates one boost converter, one 1.8V/3.3V regulator controller, and two gate voltage regulators. The device comes in several versions to satisfy common automotive TFT-LCD power-supply requirements.
The boost converter uses spread-spectrum modulation to reduce peak interference and to optimize EMI performance.
The sequencing input (SEQ) allows flexible sequencing of the positive-gate and negative-gate voltage regulators. The power-good indicator (PGOOD) indicates a failure on any of the converters or regulator outputs. Integrated thermal shutdown circuitry protects the device from overheating .
The MAX16928 is available in a 20-pin TSSOP package with exposed pad and operates over the -40NC to +105NC temperature range.
MAX16928 main features:
High-Power (Up to 6W) Boost Output Providing Up to 18V
1.8V or 3.3V Regulator Provides 500mA with External npn Transistor
One Positive-Gate Voltage Regulator Capable of Delivering 20mA at 28V
One Negative-Gate Voltage Regulator
High-Frequency 2.2MHz Operation
Flexible Stand-Alone Sequencing
True Shutdown™ Boost Converter
Internal Soft-Start
Overtemperature Shutdown
-40NC to +105NC Operation
AEC-Q100 Qualified
MAX16928 application:
Automotive Dashboards
Automotive Central Information Displays
Automotive Navigation Systems
Figure 1. MAX16928 boost converter functional block diagram
Figure 2. Multistage Charge Pump Circuit with Positive Output Voltage
Figure 3. Multistage Charge Pump Circuit with Negative Output Voltage
Figure 4. MAX16928 application circuit diagram
For details, see:
http://datasheets.maxim-ic.com/en/ds/MAX16928.pdf
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Maxim’s MAX16928 is a highly integrated automotive TFT-LCD Display power supply that integrates a boost converter (up to 6W, output up to 18V), a 1.8V/3.3V regulator controller (500mA current) and two gate Polar voltage regulator, the positive gate voltage regulator can provide 20mA current at 28V, work at high frequency 2.2MHz, and provide functions such as soft start and over-temperature shutdown. Mainly used in car dashboards, car center information Displays and Car Navigation Systems. This article describes the main features of the MAX16928, a block diagram, a multistage charge pump circuit for positive and negative output voltages, and a typical application circuit.
Automotive TFT-LCD Power Supply with Boost Converter and Gate Voltage Regulators
The MAX16928 is a highly integrated power supply for automotive TFT-LCD applications. The device integrates one boost converter, one 1.8V/3.3V regulator controller, and two gate voltage regulators. The device comes in several versions to satisfy common automotive TFT-LCD power-supply requirements.
The boost converter uses spread-spectrum modulation to reduce peak interference and to optimize EMI performance.
The sequencing input (SEQ) allows flexible sequencing of the positive-gate and negative-gate voltage regulators. The power-good indicator (PGOOD) indicates a failure on any of the converters or regulator outputs. Integrated thermal shutdown circuitry protects the device from overheating .
The MAX16928 is available in a 20-pin TSSOP package with exposed pad and operates over the -40NC to +105NC temperature range.
MAX16928 main features:
High-Power (Up to 6W) Boost Output Providing Up to 18V
1.8V or 3.3V Regulator Provides 500mA with External npn Transistor
One Positive-Gate Voltage Regulator Capable of Delivering 20mA at 28V
One Negative-Gate Voltage Regulator
High-Frequency 2.2MHz Operation
Flexible Stand-Alone Sequencing
True Shutdown™ Boost Converter
Internal Soft-Start
Overtemperature Shutdown
-40NC to +105NC Operation
AEC-Q100 Qualified
MAX16928 application:
Automotive Dashboards
Automotive Central Information Displays
Automotive Navigation Systems
Figure 1. MAX16928 boost converter functional block diagram
Figure 2. Multistage Charge Pump Circuit with Positive Output Voltage
Figure 3. Multistage Charge Pump Circuit with Negative Output Voltage
Figure 4. MAX16928 application circuit diagram
For details, see:
http://datasheets.maxim-ic.com/en/ds/MAX16928.pdf
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