Electric tools

Overview of the plan

The non inductive square wave electric tool scheme mainly consists of two main circuits: Active emi MCU and CFN7084; The main control adopts an Active-semi MCU, which integrates LDO, operational amplifier, comparator, etc. internally. At the same time, pre drive is also integrated internally, which can directly drive power MOSFETs. The power output part is composed of 6 CFN7084 (40V/225A) full bridge 3-phase outputs, which drive the brushless DC motor.

Application circuit diagram

Application Product List

Part Number	Package	Configuration	Polarity	ESD Diode	VDS (V)	VGS (±V)	ID (A)	PD (W)	RDS(ON) (mΩ max) at VGS=		VGS(th) (max V)	Qg* (nC)	Qgd (nC)
Part Number	Package	Configuration	Polarity	ESD Diode	VDS (V)	VGS (±V)	25°C	25°C	10V	4.5V	VGS(th) (max V)	Qg* (nC)	Qgd (nC)
CFN7084	DFN5*6	Single	N	NO	40	20	165	120	1.2	2.1	3.5	106	25.9
CFN1N40L	DFN5*6	Single	N	NO	40	20	165	120	1.2	2	2.5	234	20
CFD609	TO252-4	Single	P	NO	-40	20	-12	30	43	57	-2.1	24	4.1
CFD609	TO252-4	Single	N	NO	40	20	12	18.7	30	40	2.2	11.3	1.7
CFS4614	SO-8	Single	P	NO	-40	20	-5.5	2	55	68	-2.5	14.2	2.1
CFS4614	SO-8	Single	N	NO	40	20	6.5	2	32	38	2.2	10.5	1.9