ROHM Electronics Announces Complete Line Of PWM Output H-Bridge Driver ICs For DC Brush Motors
ROHM Electronics introduced its complete line of H-bridge driver ICs offering designers a simple upgrade path to pulse-width modulation (PWM) speed control using either analog or digital inputs. The new BD62xx series provides both a TTL-compatible interface to an external MCU as well as an internal VREF-PWM conversion circuit allowing implementation of energy-saving PWM control from an analog voltage input. The product line is offered in three maximum operating voltage classes (7, 18 and 36V) with current ratings in each class of 0.5 , 1.0 and 2.0A to cover applications ranging from portable electronics to automotive, appliance and medical devices.
BiCMOS topology is used to optimize performance and minimize power consumption. The P-channel/N- channel output configuration eliminates the need for an internal charge pump and external capacitors to operate the high-side switch. Internal shut-down circuitry reduces standby current to less than 1µA – particularly important in portable designs.
Pin-compatible packaging between the three voltage classes at each current level speeds design implementation while allowing for power optimization in lower-voltage applications. Two-channel versions offered at each voltage level are packaged with symmetrical pin-outs to simplify design and manufacturing. In addition, the new family of ROHM PWM output H-bridge driver ICs are direct drop-in replacements for ROHM’s legacy line of bipolar transistor output driver ICs.
All BD62xx H-bridge driver ICs include a complete suite of internal protection circuits including over-voltage protection (OVP), under-voltage lock-out (UVLO), over-current protection (OCP) and high-temperature shutdown (TSD). Overlap (shoot-through) protection to prevent high currents during motor reversal or breaking is also built in. In addition, the devices are designed to withstand 4kV ESD.
All products in the series come in low-profile surface-mount packages with maximum height ranging from 1.15mm (SSOP) to 2.2mm (HRP7). All devices are specified for -40 to 85°C operation.
Pricing is as follows: US$ 0.80 (1-channel, 7 V) to 2.60 (2-channel, 36 V) in (OEM quantities) with a delivery of 10-12 weeks ARO.
