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AC/DC 和 DC/DC 控制器 (外部 FET)

TPS40077

現行

採用 HTSSOP 封裝，具有前饋電壓的 4.5-V 至 28-V 同步降壓控制器

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TPS543B20 現行 具有適應性內部補償功能的 4-V 至 19-V、25-A 同步 SWIFT™ 降壓轉換器 Stackable (x2) with frequency synchronization, soft start adjustable and an extended operating temperature.

TPS40077

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Buck Iout (max) (A) 20 Vin (max) (V) 28 Vin (min) (V) 4.5 Vout (max) (V) 23 Vout (min) (V) 0.7 Control mode Voltage mode Features Enable, Power good, Prebias startup, Synchronous rectification Operating temperature range (°C) -40 to 85 Iq (typ) (µA) 1500 Duty cycle (max) (%) 84 Number of phases 1
Rating Catalog Topology Buck Iout (max) (A) 20 Vin (max) (V) 28 Vin (min) (V) 4.5 Vout (max) (V) 23 Vout (min) (V) 0.7 Control mode Voltage mode Features Enable, Power good, Prebias startup, Synchronous rectification Operating temperature range (°C) -40 to 85 Iq (typ) (µA) 1500 Duty cycle (max) (%) 84 Number of phases 1
HTSSOP (PWP) 16 32 mm² 5 x 6.4
  • Operation Over 4.5-V to 28-V Input Range
  • Programmable, Fixed-Frequency, up to 1-MHz, Voltage-Mode Controller
  • Predictive Gate-Drive Anti-Cross-Conduction Circuitry
  • <1% Internal 700-mV Reference
  • Internal Gate-Drive Outputs for High-Side and Synchronous N-Channel MOSFETs
  • 16-Pin PowerPAD™ Package
  • Thermal Shutdown Protection
  • Pre-Bias Compatible
  • Power-Stage Shutdown Capability
  • Programmable High-Side Sense Short-Circuit Protection
  • Operation Over 4.5-V to 28-V Input Range
  • Programmable, Fixed-Frequency, up to 1-MHz, Voltage-Mode Controller
  • Predictive Gate-Drive Anti-Cross-Conduction Circuitry
  • <1% Internal 700-mV Reference
  • Internal Gate-Drive Outputs for High-Side and Synchronous N-Channel MOSFETs
  • 16-Pin PowerPAD™ Package
  • Thermal Shutdown Protection
  • Pre-Bias Compatible
  • Power-Stage Shutdown Capability
  • Programmable High-Side Sense Short-Circuit Protection

The TPS40077 is a mid-voltage, wide-input (4.5-V to 28-V), synchronous, step-down controller, offering design flexibility for a variety of user-programmable functions, including soft start, undervoltage lockout (UVLO), operating frequency, voltage feed-forward, and high-side, FET-sensed, short-circuit protection.

The TPS40077 drives external N-channel MOSFETs using second-generation, predictive-gate drive to minimize conduction in the body diode of the low-side FET and maximize efficiency. Pre-biased outputs are supported by not allowing the low-side FET to turn on until the voltage commanded by the closed-loop soft start is greater than the pre-bias voltage. Voltage feed-forward provides good response to input transients and provides a constant PWM gain over a wide input-voltage operating range to ease compensation requirements. Programmable short-circuit protection provides fault-current limiting and hiccup recovery to minimize power dissipation with a shorted output. The 16-pin PowerPAD package gives good thermal performance and a compact footprint.

The TPS40077 is a mid-voltage, wide-input (4.5-V to 28-V), synchronous, step-down controller, offering design flexibility for a variety of user-programmable functions, including soft start, undervoltage lockout (UVLO), operating frequency, voltage feed-forward, and high-side, FET-sensed, short-circuit protection.

The TPS40077 drives external N-channel MOSFETs using second-generation, predictive-gate drive to minimize conduction in the body diode of the low-side FET and maximize efficiency. Pre-biased outputs are supported by not allowing the low-side FET to turn on until the voltage commanded by the closed-loop soft start is greater than the pre-bias voltage. Voltage feed-forward provides good response to input transients and provides a constant PWM gain over a wide input-voltage operating range to ease compensation requirements. Programmable short-circuit protection provides fault-current limiting and hiccup recovery to minimize power dissipation with a shorted output. The 16-pin PowerPAD package gives good thermal performance and a compact footprint.
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類型 標題 日期
* Data sheet TPS40077 4.5-V to 28-V Input, Voltage Mode, Synchronous Buck Controller With Voltage Feed Forward datasheet (Rev. E) PDF | HTML 2019年 6月 4日

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