Part Details for LM431 by Fairchild Semiconductor Corporation

This reference design is a high efficiency, high power density and light weight resonant converter reference design. It converts a 390V input to a 48V/1kW output. The PMP20637 power stage has over 140W/in^3 power density. The whole board weight is less than 210g. With fixed 950kHz switching frequency in steady state, 97.6% peak efficiency is achieved.

TIDA-00998 TI 设计展示了多个架构，这些架构可利用从电流互感器 (CT) 或太阳能电池收集能量的备用电池或超级电容器来延长主电池寿命。利用高效的 LED 驱动器来驱动 LED 的串联或并联灯串，以对均匀的 360 度可见性进行强度控制，从而完成最佳电源管理。

PMP6024 is an offline: LED driver circuit consisting of an isolated: power-factor corrected: constant output voltage flyback converter followed by two DC/DC buck LED current controllers.  It is suitable for indoor or outdoor area lighting applications of 3500-5000 lumens (depending upon LED selection).  LED brightness is controlled by a 3.3V: 10kHz PWM signal which is converted to a DC level adjustment of the LED string currents avoiding PWM modulation of the light output.

A very low noise differential power supply for split rail systems requiring low noise +5V and -5V (higher or lower voltage is possible). This design is fully isolated and capable of floating to over 500V differential from Vin to Vout (higher is possible). The LM5001 IC is a fully integrated flyback regulator which performs all of the current mode control for tight regulation and transient response. The design is small and uses only one side of a double sided FR4 PCB for components. Smaller IC packages are available so the layout can be further optimized.This design provides very low noise bias rails for ground referenced analog circuitry (under 20 mV p-p total noise up to 1GHz). The design utilizes a very small size PCB footprint. This approach is ideal for many applications including low noise cable drivers: medical electronics: high fidelity low power audio: and other sensitive circuitry that can benefit from very low noise split rail biasing. Input to output isolation is employed for those applications where the input and output voltages might be at different potentials or when the input voltage travels across cabling which might pickup noise. The floating outputs avoid unwanted ground currents and the potential for additional noise pickup. For those that do not require isolation they can remove the feedback isolation section of the design and use a simple resistor divider for setting the feedback voltage.

This verified reference design provides an overview on how to implement a three-level three-phase SiC based DC:AC T-type inverter stage. Higher switching frequency of 50KHz reduces the size of magnetics for the filter design and enables higher power density. The use of SiC MOSFETs with switching loss ensures higher DC bus voltages of up to 1000V and lower switching losses with a peak efficiency of 99 percent. This design is configurable to work as a two-level or three-level inverter.The system is controlled by a single C2000 microcontroller (MCU): TMS320F28379D: which generates PWM waveforms for all power electronic switching devices under all operating modes.

The PMP15012 reference design is a DC/DC buck-boost solution which accepts an input voltage of 18V to 36V and provides negative 15V/200mA output to the load. This reference design adds an external UVLO circuit to narrow the UVLO hysteresis because a buck-boost converter is difficult to shut down. This LMR16020 buck-boost reference design can be used for supplying the DAC/ADC/OA in an industrial application.

PMP10723 is an isolated output flyback solution that accepts an input voltage of 9 VIN to 16 VIN and provides a 53-V/400-mA output. With secondary control: it can achieve great load regulation performance. Also it can fan out to cover other isolated high-voltage applications just by changing the transformer parameters.

This is a flyback converter with an input voltage range of 10.8V-to-14.4Vin and three outputs: 80Vout @ 0.4A, -58Vout @ 0.7A, and -24Vout @ 0.7A

The PMP9739 is a single stage LLC series resonant converter (SRC): producing up to a 250W output using UCC25600 resonant controller. With the use of single stage LLC-SRC: the converter efficiency goes up to 89% at 250W full output power.

此参考设计使用 TPS62510 1.5MHz 同步降压转换器从 3.3V 电源产生 2.5V/0.5A 输出电流。这种紧凑型设计的效率可达 95%，且输出波纹电压低于 10mVpp。

This low cost LED driver can regulate 350mA into a series string of LEDs with an output of up to 30V. It can operate over a wide input range and can tolerate transients up to 30Vin making it suitable for automotive applications. Open LED protection is included.

此参考设计在升/降压转换器中使用 TPS40170 同步降压控制器，以便控制 6 至 8 个 LED (-28V) 串联串在高达 1.5A 时的电流。效率大于 93%。可通过外部控制电压调节输出电流。

This reference design extends the link distance and loss budget of high speed SAS-3 data paths, using configurable equalization, de-emphasis, and output voltage. It supports SAS and SATA interfaces from 1.5 Gbps to 12 Gbps using a miniSAS-HD interface.

This board allows the LMH5401 to be used as a low gain amplifier or as an attenuator.

One of the challenges in battery operated water meters is to continuously measure the water flow information while consuming as little energy as possible. The EVM430-FR6989 used in this design features a MSP430 FRAM-based microcontroller with 100uA/MHz active-mode current, 450nA standby-mode curr

The PMP10680 reference design is a non-sync buck converter with buck-boost configuration. The PMP10680 accepts an input voltage of 4.5 to 24Vin and provides a negative 5V output capable of supplying continuous 2A of current to the load. With negative output and the self-positive input: this reference design could be used for bipolar amplifer/ADC/DAC supply. Internal compensation facilitates ease of use.

Low EMI: high efficiency: high power factor and reliable power supply are main focus of the PMP8920 design for telecom applications. Transient mode (TM) power factor correction (PFC) with UCC28051 and LLC series resonant converter (SRC) with UCC25600 are applied in PMP8911. In addition: synchronous rectifier (SR) IC UCC24610 is applied to LLC output rectifier stage. Low EMI is expected with zero voltage switching on TM-PFC and LLC-SRC switches. An overall 91% efficiency is achieved at 100W full load. In addition: several protections are embedded into this design which includes input under-voltage protection: input over-voltage protection: output over-voltage protection: and output hic-cup over-power protection.

The SimpleLink™ Sub-1 GHz Sensor to Cloud reference design demonstrates how to connect sensors to the cloud over a long-range Sub-1 GHz wireless network, suitable for industrial settings such as building control and asset tracking. This design provides a complete end-to-end solution

The PMP11405 reference design uses the UCC28740 constant current (CC): constant voltage (CV) flyback controller for a 5V/1A: 12V/0.9A bias supply with high line AC input (185VAC to 260VAC input). With safety isolated: Over 80% efficiency is achieved at full load and less than 400mW power consumption is observed during no load condition.

Low EMI: high efficiency: high power factor and reliable power supply are main focus of the PMP8911 design for telecom applications. Transient mode (TM) power factor correction (PFC) with UCC28051 and LLC series resonant converter (SRC) with UCC25600 are applied in PMP8911. Low EMI is expected with zero voltage switching on TM-PFC and LLC-SRC switches. An overall 92% efficiency is achieved at 100W full load. In addition: several protections are embedded into this design which includes input under-voltage protection: input over-voltage protection: output over-voltage protection: and output hic-cup over-power protection.

PMP10594 is a synchronous 4-switch buck-boost converter reference design which utilizes the LM5175 controller for battery charger applications. The output voltage set point can be adjusted by a PWM signal over the range of 7.1V to 9.2V. I2C programming allows independent control of the average input current and charge current. Full scale input current limiting is 6A: while charge current is programmable to 12.5A. The LM5175 average current loop sets a maximum output current of 20A: which should never engage under normal circumstances. Additional pulse-by-pulse current limiting is inherent in the current-mode controller: making this a very robust design. A battery disconnect switch is used to provide trickle charging if the battery voltage is less than 6V.

PMP8917 has been designed as a competitive open-frame alternative for the communications market with 36-72Vin to 5V/2A. The product is supplied in the industry standard footprint of 2.0 x 1.0 x 0.394 inches. PMP8917 has a basic insulation system from input to output making it suitable for a wide variety of applications. LM5020 is used as synchronous Flyback converter controller for PMP8917 with 92.9% converter efficiency.