Catalog(1 parts)
| Part | Voltage - Input▲▼ | Voltage - Input▲▼ | Supplied Contents | Utilized IC / Part | Voltage - Output▲▼ | Voltage - Output▲▼ | Board Type | Main Purpose | Outputs and Type | Outputs and Type▲▼ | Regulator Topology | Current - Output▲▼ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments TPS65235EVM-747TPS65235 - Special Purpose DC/DC, LNB 1, Non-Isolated Outputs Evaluation Board | 4.5 V | 16 V | Board(s) | TPS65235 | 11 V | 20 V | Fully Populated | LNB, Special Purpose DC/DC | Non-Isolated | 1 ul | Boost | 1 A |
Key Features
• Complete integrated solution for LNB and I2C interfaceDiSEqC 2.x and DiSEqC 1.x compatibleSupports 5-V, 12-V, and 15-V power railUp to 1000-mA accurate output current limit adjustable by external resistorBoost switch peak current limit proportional to LDO current limitBoost converter with 140-mΩ low Rds(on)internal power switchBoost switching frequency 1-MHz or 500-kHz selectableDedicated enable pin for non-I2C applicationLow drop output LDO with push-pull output stage for VLNB outputBuilt-in accurate 22-kHz tone generator and external tone input supportSupports both external 44-kHz and 22-kHz tone inputAdjustable soft-start and 13-V to 18-V voltage transition time650 mV to 750-mV, 22-kHz tone amplitude selectionI2C registers accessible with EN lowShort circuit dynamic protectionDiagnostics for output voltage level, DiSEqC tone input and output, current level, and cable connectionThermal protection available20-lead WQFN 3-mm × 3-mm (RUK) packageComplete integrated solution for LNB and I2C interfaceDiSEqC 2.x and DiSEqC 1.x compatibleSupports 5-V, 12-V, and 15-V power railUp to 1000-mA accurate output current limit adjustable by external resistorBoost switch peak current limit proportional to LDO current limitBoost converter with 140-mΩ low Rds(on)internal power switchBoost switching frequency 1-MHz or 500-kHz selectableDedicated enable pin for non-I2C applicationLow drop output LDO with push-pull output stage for VLNB outputBuilt-in accurate 22-kHz tone generator and external tone input supportSupports both external 44-kHz and 22-kHz tone inputAdjustable soft-start and 13-V to 18-V voltage transition time650 mV to 750-mV, 22-kHz tone amplitude selectionI2C registers accessible with EN lowShort circuit dynamic protectionDiagnostics for output voltage level, DiSEqC tone input and output, current level, and cable connectionThermal protection available20-lead WQFN 3-mm × 3-mm (RUK) package
Description
AI
Designed for analog and digital satellite receivers, the TPS65235 is a monolithic voltage regulator with I2C interface; specifically to provide the 13-V to 18-V power supply and the 22-kHz tone signal to the LNB down converter in the antenna dish or to the multi-switch box. It offers a complete solution with minimum component count, low power dissipation together with simple design and I2C standard interface.
TPS65235 features high power efficiency. The boost converter integrates a 140-mΩ power MOSFET running at 1 MHz or 500 kHz selectable switching frequency. Drop out voltage at the linear regulator is 0.8 V to minimize power loss. TPS65235 provides multiple ways to generate the 22 kHz signal. Integrated linear regulator with push-pull output stage generates 22-kHz tone signal superimposed at the output even at zero loading. Current limit of linear regulator can be programmed by external resistor with ±10% accuracy. Full range of diagnostic read by I2C is available for system monitoring.
TPS65235 supports advanced DiSEqC 2.x standard with 22-kHz tone detection circuit and output interface.
Designed for analog and digital satellite receivers, the TPS65235 is a monolithic voltage regulator with I2C interface; specifically to provide the 13-V to 18-V power supply and the 22-kHz tone signal to the LNB down converter in the antenna dish or to the multi-switch box. It offers a complete solution with minimum component count, low power dissipation together with simple design and I2C standard interface.
TPS65235 features high power efficiency. The boost converter integrates a 140-mΩ power MOSFET running at 1 MHz or 500 kHz selectable switching frequency. Drop out voltage at the linear regulator is 0.8 V to minimize power loss. TPS65235 provides multiple ways to generate the 22 kHz signal. Integrated linear regulator with push-pull output stage generates 22-kHz tone signal superimposed at the output even at zero loading. Current limit of linear regulator can be programmed by external resistor with ±10% accuracy. Full range of diagnostic read by I2C is available for system monitoring.
TPS65235 supports advanced DiSEqC 2.x standard with 22-kHz tone detection circuit and output interface.