The TPS40055 is a family of high-voltage, wide input (8 V to 40 V), synchronous, step-down converters. The TPS40055 family offers design flexibility with a variety of user programmable functions, including soft-start, UVLO, operating frequency, voltage feed-forward, high-side current limit, and loop compensation.

The TPS40055 are also synchronizable to an external supply. The TPS40055 incorporates MOSFET gate drivers for external N-channel high-side and synchronous rectifier (SR) MOSFETs. Gate drive logic incorporates anti-cross conduction circuitry to prevent simultaneous high-side and synchronous
rectifier conduction.

The TPS40055 uses voltage feed-forward control techniques to provide good line regulation over the wide (4:1) input voltage range and fast response to input line transients with near constant gain with input variation which eases loop compensation. The
externally programmable current limit provides pulse-by-pulse current limit, as well as a hiccup mode operation utilizing an internal fault counter for longer duration overloads.

• Operating Input Voltage 8 V to 40 V
• Input Voltage Feed-Forward Compensation
• < 1 % Internal 0.7-V Reference
• Programmable Fixed-Frequency Up to 1-MHz Voltage Mode Controller
• Internal Gate Drive Outputs for High-Side and Synchronous N-Channel MOSFETs
• 16-Pin PowerPAD Package (ηJC = 25°C/W)
• Thermal Shutdown
• Externally Synchronizable
• Programmable High-Side Sense Short-Circuit Protection
• Programmable Closed-Loop Soft-Start
• TPS40055 Source/Sink
• SUPPORTS DEFENSE, AEROSPACE, AND MEDICAL APPLICATIONS
  • Controlled Baseline
  • One Assembly/Test Site
  • One Fabrication Site
  • Available in Military (55°C/125°C) Temperature Range(1)
  • Extended Product Life Cycle
  • Extended Product-Change Notification
  • Product Traceability
• APPLICATIONS
  • Power Modules
  • Networking/Telecom
  • Industrial/Servers

(1) Additional temperature ranges available - contact factory

• Vin (Min) (V)
• 8
• Vin (Max) (V)
• 40
• Vout (Min) (V)
• 0.7
• Vout (Max) (V)
• 35
• Iout (Max) (A)
• 20
• Iq (Typ) (uA)
• 1500
• Switching frequency (Min) (kHz)
• 100
• Switching frequency (Max) (kHz)
• 1000
• Features
• Enable, Frequency Synchronization, Synchronous Rectification
• Regulated outputs (#)
• 1
• Number of phases
• 1
• Rating
• HiRel Enhanced Product

TPS40055-EP的完整型号有：TPS40055MPWPREP、V62/05617-01XE，以下是这些产品的关键参数及官网采购报价：

TPS40055MPWPREP，工作温度：-55 to 125，封装：HTSSOP (PWP)-16，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TPS40055MPWPREP的批量USD价格：4.158（1000+）

V62/05617-01XE，工作温度：-55 to 125，封装：HTSSOP (PWP)-16，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网V62/05617-01XE的批量USD价格：4.158（1000+）

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