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TPS4812-Q1

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Automotive 100V low IQ high-side driver with bi-directional current monitoring, I2t, and diagnost

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Data sheet

TPS4812-Q1

ACTIVE
Data sheet Order now

Product details

Operating voltage (max) (V) 80 Operating voltage (min) (V) 3.5 Reverse polarity protection (V) -65 IGate sink (typ) (A) 2 IGate source (typ) (A) 2 Current sense accuracy +/-2% at 30-mV VSNS Short-circuit protection response time (µs) 6 Features Automatic load wake-up, Bi-directional, Fault Diagnostics, High-side RSNS, Over Temperature Protection, Overcurrent protection with adjustable delay, Precharge FET driver, Short circuit protection, Undervoltage Lock Out (UVLO), VDS Sensing Operating temperature range (°C) -40 to 125 Rating Automotive
Operating voltage (max) (V) 80 Operating voltage (min) (V) 3.5 Reverse polarity protection (V) -65 IGate sink (typ) (A) 2 IGate source (typ) (A) 2 Current sense accuracy +/-2% at 30-mV VSNS Short-circuit protection response time (µs) 6 Features Automatic load wake-up, Bi-directional, Fault Diagnostics, High-side RSNS, Over Temperature Protection, Overcurrent protection with adjustable delay, Precharge FET driver, Short circuit protection, Undervoltage Lock Out (UVLO), VDS Sensing Operating temperature range (°C) -40 to 125 Rating Automotive
VQFN (RGE) 23 16 mm² 4 x 4

  • AEC-Q100 automotive qualified for grade 1 temperature
  • 3.5V to 95V input range (100V absolute maximum)
  • Reverse input and output protection down to –65V
  • Integrated 12V charge pump
  • Low IQ = 20µA in low power mode (LPM = Low)
  • Low 1µA shutdown current (EN/UVLO = Low)
  • Dual gate drive: GATE: 0.5A src/2A sink G: 100µA src/0.39A sink
  • Accurate I2t overcurrent protection (IOC) with adjustable circuit breaker timer (I2t)
  • Accurate and fast (5µs) short-circuit protection
  • Fast transition (5µs) from low power mode to active mode using adjustable load wakeup threshold or LPM trigger with WAKE indication
  • Accurate analog bi-directional current monitor output (IMON, I_DIR): ±2% at 30mV VSNS
  • NTC based overtemperature sensing (TMP) and monitoring output (ITMPO)
  • Fault indication (FLT) during short circuit fault, I2t, charge pump UVLO, overtemperature
  • TPS48120-Q1 (I2t enabled), TPS48121-Q1 (I2t disabled)
  • Accurate (±2%) and adjustable undervoltage lockout (UVLO)

  • AEC-Q100 automotive qualified for grade 1 temperature
  • 3.5V to 95V input range (100V absolute maximum)
  • Reverse input and output protection down to –65V
  • Integrated 12V charge pump
  • Low IQ = 20µA in low power mode (LPM = Low)
  • Low 1µA shutdown current (EN/UVLO = Low)
  • Dual gate drive: GATE: 0.5A src/2A sink G: 100µA src/0.39A sink
  • Accurate I2t overcurrent protection (IOC) with adjustable circuit breaker timer (I2t)
  • Accurate and fast (5µs) short-circuit protection
  • Fast transition (5µs) from low power mode to active mode using adjustable load wakeup threshold or LPM trigger with WAKE indication
  • Accurate analog bi-directional current monitor output (IMON, I_DIR): ±2% at 30mV VSNS
  • NTC based overtemperature sensing (TMP) and monitoring output (ITMPO)
  • Fault indication (FLT) during short circuit fault, I2t, charge pump UVLO, overtemperature
  • TPS48120-Q1 (I2t enabled), TPS48121-Q1 (I2t disabled)
  • Accurate (±2%) and adjustable undervoltage lockout (UVLO)

TPS4812-Q1 is a family of low IQ smart high side drivers with protection and diagnostics. With wide operating voltage range of 3.5V to 95V, 100V absmax the device is suitable for 12V, 24V and 48V automotive system designs.

It has two integrated gate drives with 0.5A source and 2A sink (GATE) and 100µA source and 0.39A sink (G). With LPM Low, the low power path is kept ON and the main FETs are turned OFF with IQ of 20µA (typ). Auto Load wakeup threshold adjusted using RBYPASS resistor placed across DRN and CS2–. IQ reduces to 1µA (typ) with EN/UVLO low.

The device has accurate bi-directional current sensing (±2%) output (IMON, I_DIR) with adjustable I2t based overcurrent and short circuit protection using an external RSNS resistor and FLT indication. Auto-retry and latch-off fault behavior can be configured. The device also has NTC based temperature sensing (TMP) and monitoring output (ITMPO) output for overtemperature detection of external FETs.

The TPS4812-Q1 is available in 23-pin VQFN package.

TPS4812-Q1 is a family of low IQ smart high side drivers with protection and diagnostics. With wide operating voltage range of 3.5V to 95V, 100V absmax the device is suitable for 12V, 24V and 48V automotive system designs.

It has two integrated gate drives with 0.5A source and 2A sink (GATE) and 100µA source and 0.39A sink (G). With LPM Low, the low power path is kept ON and the main FETs are turned OFF with IQ of 20µA (typ). Auto Load wakeup threshold adjusted using RBYPASS resistor placed across DRN and CS2–. IQ reduces to 1µA (typ) with EN/UVLO low.

The device has accurate bi-directional current sensing (±2%) output (IMON, I_DIR) with adjustable I2t based overcurrent and short circuit protection using an external RSNS resistor and FLT indication. Auto-retry and latch-off fault behavior can be configured. The device also has NTC based temperature sensing (TMP) and monitoring output (ITMPO) output for overtemperature detection of external FETs.

The TPS4812-Q1 is available in 23-pin VQFN package.
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* Data sheet TPS4812-Q1 100V Low IQ Automotive High-Side Switch Controller With Bi-directional IMON, Low Power Mode, Load Wakeup, I2 t, and Diagnostics datasheet PDF | HTML 27 Dec 2024

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The TPS1214-Q1 evaluation module (EVM) allows reference circuit evaluation of the TPS1214-Q1 smart high-side driver. The EVM allows for full configuration of the high-side driver as well as various parameters such as overcurrent protection, short-circuit protection and configurable I2T control. (...)
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