The DRV8848 provides a dual H-bridge motor driver for home appliances and other mechatronic applications. The device can be used to drive one or two DC motors, a bipolar stepper motor, or other loads. A simple PWM interface allows easy interfacing to controller circuits.
The output block of each H-bridge driver consists of N-channel and P-channel power MOSFETs configured as full H-bridges to drive the motor windings. Each H-bridge includes circuitry to regulate the winding current using a fixed off-time chopping scheme. The DRV8848 is capable of driving up to 2 A of current from each output or 4 A of current in parallel mode (with proper heat sinking, at 12 V and TA = 25°C).
A low-power sleep mode is provided, which shuts down internal circuitry to achieve very-low quiescent current draw. This sleep mode can be set using a dedicated nSLEEP pin.
Internal protection functions are provided for UVLO, OCP, short-circuit protection, and overtemperature. Fault conditions are indicated by a nFAULT pin.
|Part number||Order||Number of full bridges||Vs (Min) (V)||Vs (Max) (V)||Full-scale current (A)||Peak output current (A)||RDS(ON) (HS + LS) (mOhms)||Control mode||Control interface||Features||Package size: mm2:W x L (PKG)||Approx. price (US$)|
|Hardware (GPIO)||Current Regulation||16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)||0.66 | 1ku|
16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)
16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)
16WQFN: 9 mm2: 3 x 3 (WQFN | 16)
|0.57 | 1ku|