The devices allow for the independent control of the high-side driver and the low-side driver through two separate inputs, HI and LI. The two inputs can be configured to enable or disable the device, thus lowering the number of connections to a microcontroller. This simplifies board layouts and reduces system costs.
A fail-safe mechanism is included to improve system reliability and to minimise the risk of catastrophic bridge failures due to a controller malfunction. Internal logic prevents both outputs from turning on simultaneously when HI and LI are both High simultaneously. Dead time is still required on the rising edge of the HI (or LI) input when the LI (or HI) input goes to Low.
Integrated pull-down resistors on all of the inputs reduce the need for external resistors. An active low-resistance pull-down on the low-side output ensures that the low-side bridge FET remains off when in Sleep mode or when the supply voltage is below the under-voltage lock-out threshold.
The HIP2104 includes a 12V linear regulator and a 3.3V linear regulator with separate Enable pins. This gives designers great flexibility, such as the ability to turn off both outputs, reducing total battery drain current to less than 5ΞΌA.
The HIP2103 is available in a 3mm x 3mm, eight-lead TDFN package. The HIP2104 is available in a 4mm x 4mm, 12-lead DFN package.
- Battery-operated power tools
- Battery-powered home automation equipment
- Electric bikes
- 60V maximum bootstrap supply voltage
- 4V under-voltage lock-out
- 3.3V or 5V CMOS-compatible inputs with hysteresis
- Integrated bootstrap FET replaces traditional bootstrap diode
- 5Β΅A sleep mode quiescent current
- 12V LDO and 3.3V LDO with separate enable pins (HIP2104 only)