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Description

This in an automotive boost LED driver designed to drive an LED string of up to 34V at a maximum of 34W of output power. This solution as designed passes CISPR 25 class 3 EMC requirements and is capable of 10:1 analog dimming. High side current sensing allows one end of the LED string to be tied to (...)

Key Features

  • CISPR 25 Class 3 compliant
  • 10:1 Analog dimming capable
  • High side current sense allows the LED string to connect directly to ground
  • Up to 34W output power
  • Low LED current ripple

Design Parameters

 
 
Vin (V) (Min)
Vin (V) (Min)
Vin (V) (Max)
Vin (V) (Max)
Vout (V) (Nom)
Vout (V) (Nom)
Iout (A) (Max)
Iout (A) (Max)
Output Power (W)
Output Power (W)
Isolated/Non-Isolated
Isolated/Non-Isolated
Input Type
Input Type
Topology
Topology
Designed for
Designed for
PMP15003.1
(Output
Voltage1)
6 20 34 1 34 Non-Isolated DC Boost- Non Sync

Description

This reference design focuses on high-side current measurement using a family of TI's voltage output current shunt monitors. It can be used for measuring high-side current in industrial applications, where the common-mode dynamics can drop below ground. Overall the design helps designers build (...)

Key Features

  • Wide common mode input range: -14V to 80V
  • Overvoltage protection: 45V
  • EFT protection up to 1KV as per IEC61000-4-4
  • >130dB CMRR for DC-10Hz
  • Overall accuracy better than 2%
  • 70 µV offset and 1.4% gain error

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