0.47 µF

to 1 µF

V

CC

5VREG

IN+

IN–

S-S

CPWM

SENSE

SGND

OUT2P

OUT2N

OUT1P

OUT1N

FG

Discharge Circuit

Discharge

Pulse

5VREG

Thermal Shutdown

Oscillator

Controller

CT

Hall

VTH

RMI

TMP815

SLDS153B – MAY 2009 – REVISED NOVEMBER 2015

www.ti.com

7 Detailed Description

7.1 Overview

The TMP815 device is a single phase bipolar predriver which uses the hall sensor and speed control inputs for

driving the single phase motor connected through the H Bridge. The predriver outputs are designed for driving

top side P-channel and bottom side N-channel FETs in the bridge. Multiple protections like overcurrent, soft start,

speed control, lock detect, speed feedback and minimum speed are incorporated in the device.

7.2 Functional Block Diagram

6

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