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Shenzhen KINRI Energy Technology Co.,Ltd.

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· Introduction to step-down power module DC/DC regulator LTM4700

The LTM4700 is Dual 50A or Single 100A µModule Regulator with Digital Power System Management and is manufacured by ADI. GENERAL DESCRIPTIONThe LTM4700 is a dual 50A or single 100A step-down µModule® (power module) DC/DC regulator featuring remote configurability and telemetry-monitoring of power management parameters over PMBus— an open standard I2C-based digital interface protocol. The LTM4700 is comprised of fast analog control loops, precision mixed signal circuitry, EEPROM, power MOSFETs, inductors and supporting components. The LTM4700 product video is available on website.The LTM4700’s 2-wire serial interface allows outputs to be margined, tuned and ramped up and down at programmable slew rates with sequencing delay times. Input and output currents and voltages, output power, temperatures, uptime and peak values are readable. Custom configuration of the EEPROM contents is not required. At start-up, output voltages, switching frequency, and channel...
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08-26
2022
· Introduction to high accuracy linear regulator SGM2022

The SGM2022 is manufacured by sg-micro.GENERAL DESCRIPTIONThe SGM2022 is a dual, low dropout, low voltage and high accuracy linear regulator. It is capable of supplying 250mA output current at each channel with typical dropout voltage of only 250mV. The operating input voltage range is from 2.5V to 5.5V.Other features include logic-controlled shutdown mode, output current limit and thermal shutdown protection.The SGM2022 is available in a Green SOT-23-6 package. It operates over an operating temperature range of -40℃ to +85℃.PIN CONFIGURATIONS FEATURES●Operating Input Voltage Range: 2.5V to 5.5V●Output Voltage Accuracy: ±2% at +25℃●Low Dropout Voltage: 250mV (TYP) at 250mA●High PSRR: 71dB (TYP) at 100Hz●Shutdown Current: 0.01μA (TYP)●Low No Load Supply Current: 190μA (TYP)●Thermal Shutdown Protection●Output Current Limit●-40℃ to +85℃ Operating Temperature Range●Available in a Green SOT-23-6 PackageAPPLICATIONS●Modems●MP3 Players●Wireless LAN●Cellular Telephones●PCMCIA Ca...
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09-28
2022
· Introduction to a highly integrated quasi−resonant flyback controller NCP1340

The NCP1340 is manufactured by Onsemi. OverviewThe NCP1340 is a highly integrated quasi−resonant flyback controller suitable for designing high−performance off−line power converters. With an integrated active X2 capacitor discharge feature, the NCP1340 can enable no−load power consumption below 30 mW. The quasi−resonant current−mode flyback stage features a proprietary valley−lockout circuitry, ensuring stable valley switching. This system works down to the 6th valley and transitions to a frequency foldback mode to reduce switching losses. As the load decreases further, the NCP1340 enters quiet−skip mode to manage the power delivery. To help ensure converter ruggedness, the NCP1340 implements several key protective features such as internal brownout detection, a non−dissipative Over Power Protection (OPP) for constant maximum output power regardless of input voltage, a latched over voltage and NTC−ready over temperature prot...
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08-18
2022
· Introducation of UCC2871x Series Fly-back Switching Power Supply Controller

The UCC2871x series is a flyback power supply controllers produced by TI. DescriptionThe UCC2871x family of flyback power supply controllers provides isolated-output Constant-Voltage (CV) and Constant-Current (CC) output regulation without the use of an optical coupler. The devices process information from the primary power switch and an auxiliary flyback winding for precise control of output voltage and current.An internal 700-V start-up switch, dynamically-controlled operating states and a tailored modulation profile support ultra-low standby power without sacrificing start-up time or output transient response.Control algorithms in the UCC28710 family allow operating efficiencies to meet or exceed applicable standards. The output drive interfaces to a MOSFET power switch. Discontinuous conduction mode (DCM) with valley switching reduces switching losses. Modulation of switching frequency and primary current peak amplitude (FM and AM) keeps the conversion efficiency high across the...
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08-18
2022
· Security becomes the focus of wireless battery management systems

The full benefits of wBMS technology can only be achieved if system security can be assured from process to product. The challenges identified in early conversations with electric vehicle (EV) OEMs about the technological and business benefits of wireless battery management systems (wBMS) seemed daunting, but the rewards are too promising to ignore. Wireless connectivity’s many inherent advantages over wired/cabled architectures have already been proven in countless commercial applications, and BMS was another clear-cut candidate for cord cutting. Figure 1. An electric vehicle using a wireless battery management system (wBMS). The prospect of a more lightweight, modular, and compact EV battery pack—finally liberated from its cumbersome communication wiring harness—has been roundly embraced. By eliminating up to 90% of the pack wiring, and 15% of the pack volume, the entire vehicle’s design and footprint can be streamlined significantly, as can its bill o...
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02-28
2022

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