The limitation of the commonly used back-emf sensorless detection technique is that it is not possible to control the speed of the BLDC motor over a wide speed range as required in electric vehicles. In particular, it is not possible to control at low speeds due to the presence of noise signals near pulse width modulated (PWM) back-emf zero-crossing points at low speeds. Therefore, the duty-cycle of direct sensorless back-emf technique is limited to less than 100% since a minimum turn-off time is required to get the sample of back-emf and apply control action. In this paper, a microcontroller-based enhanced PWM back-emf zero-crossing detection method is proposed to control the speed of the BLDC motor over a wide speed range. The experimental results are presented in this paper for validation.