Intersil – HIP2103 and HIP2104: 60V, 1A/2A Peak, Half Bridge Driver with 4V UVLO and Two Internal LDOs 12V and 3.3V

With industry leading technology in power management and analog products, Intersil provides innovative design solutions to maximize performance and reliability across a broad range of industrial applications. Factory automation, in particular, now requires higher efficiency motors and process control equipment to monitor and control system interactions by collecting, analyzing, storing and communicating large amounts of data.

The interface between motion control systems and coordinated motion input (either human or sensors) requires tight synchronization. All aspects of the motor control subsystem (MCU or FPGA, MOSFETs, and bridge drivers) must be as efficient and precise as possible to support speed, torque and position of the motor.

Intersil’s new HIP2103 and HIP2104 bridge drivers are ideally designed for motor control systems utilizing brushed or brushless DC motors, or other similar loads. Two inputs (HI and LI) are provided to independently control the high side driver (HO) and the low side driver (LO). Furthermore, the two inputs can be configured to enable/disable the device, thus lowering the number of connections to an MCU and lowering costs.

A fail safe mechanism is included to improve system reliability and to minimize the possibility of catastrophic bridge failures due to 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 transitions low.

Integrated pull-down resistors on all of the inputs (LI, HI, VDen and VCen) reduce the need for external resistors. An active low resistance pull-down on the LO output ensures that the low side bridge FET remains off during the Sleep Mode or when VDD is below the under-voltage lockout (UVLO) threshold.

The HIP2104 has a 12V linear regulator and a 3.3V linear regulator with separate enable pins. This gives customers maximum flexibility, such as turning both outputs off so the total battery drain current is less than 5μA. The enable inputs also allow provided denouncing for the safe use of mechanical switches to turn regulator outputs on and off. No one else has these embedded LDOs.

There are two different kits available to support these parts. The HIP2103_4MBEVAL1Z is an evaluation tool for the HIP2103 and HIP2104 half bridge MOSFET drivers. This tool consists of a motherboard and HIP2103DBEVAL1Z and HIP2104DBEVAL1Z evaluation daughter cards. The motherboard platform provides an on-board microcontroller that is used to generate appropriate control inputs to the HIP2103 or HIP2104. The frequency, the PWM duty cycle, and the dead-time provided by the microcontroller are user adjustable.

The HIP2103-4DEMO1Z is a general purpose motor drive with a microprocessor controller. Three motor drive topologies are supported: 3-phase for BLDC motors, and full and half bridge for conventional brushed DC motors. Hall effect rotor position sensors are used to control the switching sequence of the BLDC topology (not required for the brushed DC motors).

The operating bridge voltage can vary between 13V and 50V and the maximum motor current is 20A (with sufficient air flow). This motor drive can be used as a design reference for multiple applications including e-bikes, battery-powered tools, electric power steering, wheelchairs, or any other application where a brushed or brushless DC motors are utilized.

Figure 1. Typical Full Bridge Application

Figure 1. Typical Full Bridge Application

For maximum flexibility, the controller is mounted on a daughter card so a customer can design their own daughter card and use whatever controller they desire.

The HIP2103 is available in a 3 x 3mm, 8Ld TDFN package and the HIP2104 is available in a 4 x 4mm, 12Ld DFN package.


  • 60V maximum boot-strap supply voltage
  • 3.3V and 12V LDOs with dedicated enable pins (HIP2104 only)
  • 5μA sleep mode quiescent current
  • 4V under-voltage lockout
  • 3.3V or 5V CMOS compatible inputs with hysteresis
  • Integrated boot-strap FET (replaces traditional boot-strap diode)

  • Battery operated power tools
  • Radio controlled aircraft and cars
  • Battery-powered home automation equipment
  • e-bikes




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