Packaging information
| Package | Pins HTSSOP (PWP) | 28 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 2,000 | LARGE T&R |
Features for the TPS92602-Q1
- Qualified for Automotive Applications
- AEC-Q100 Qualified With the Following
Results:
- Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C4B
- Input Voltage: 4 V–40 V (45 V Abs. Max.)
- Output Voltage: 4 V–75 V (80 V Abs. Max.)
- Fixed-Frequency Current-Mode Controller With Integrated Slope Compensation
- Two Regulation Loops, Constant-Current Output and Constant-Voltage Output of Each Channel
- High-Side Current Sense:
- 150-mV or 300-mV Sense Voltage (EEPROM Option)
- ±6-mV Offset (Achieving Approx. 4% or 2% LED Current Accuracy)
- Output Voltage Sense, Internal Voltage Reference: 2.2 V ±5%
- Integrated Low-Side NMOS-FET Driver: Peak Gate-Drive Current Typ. 0.7 A
- Frequency Synchronization
- Both PWM Dimming and Analog Dimming
- Diagnostic:
- High-Side Current (LED Current) Available as Analog Output
- Open-LED and Short-to-GND Detection
- Shorted Output Protection
- Internal Under- and Overvoltage Lockout
Description for the TPS92602-Q1
The TPS9260x-Q1 family of devices is a single-channel and dual-channel high-side-current LED driver. With full protection and diagnostics, this family of devices is dedicated for and ideally suited to automotive front lighting. The base of each independent driver is a peak-current-mode boost controller. Each controller has two independent feedback loops, a current-feedback loop with a high-side current-sensing shunt and a voltage-feedback loop with an external resistor-divider network. The controller delivers a constant output voltage or a constant output current. The connected load determines whether the device regulates a constant output current (if the circuit reaches the current set-point earlier than voltage set-point) or a constant output voltage (if the circuit reaches the voltage set-point is reached first, for example, in an open-load condition).
Each controller supports all typical topologies such as boost, boost-to-battery, SEPIC, or flyback.
Uses of the high-side PMOS FET driver are for PWM dimming of the LED string and for cutoff in case of an external short circuit to GND to protect the circuit.