AUTOMOTIVE_Catalog_Ver.2.1

HVAC CONTROL MODULE Products

The HVAC (Heating Ventilation and Air Conditioning) system cools the interior using the refrigeration cycle using a

      
  
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operating the fan and adjusting the percentage of warm and cold air mixture, and an automatic mode that adjusts the

temperature and air flow rate based on a preset temperature.

The following figure shows the block diagram of a typical HVAC system. Switching the power source from the gas engine

in conventional vehicles to the electric motor in HEVs and EVs results in a much quieter cabin, which can make the blower

noise from the AC or seat heating/cooling fan motor's noise particularly noticeable. Therefore, to minimize this noise and

improve thermal efficiency, it is customary to replace the conventional brushed DC motors used for blower and fan motors

with brushless motors.

Low ohmic Resistor

Memory

Operational Amplifier

Comparator

Voltage Detector

(Reset ICs)

P.

P.

P.

P.

Voltage Regulator^ P.

LIN Transceiver P.

TQFP100V

Includes all functions required for
panel operation, such as LCD
control, button detection,
and LED dimming.

LCD Driver BU97530KVT-M

P.26 QFP

Broad lineup offered, supports a wide

range of needs, from high reliability

types and EMS-tolerant

units to highly integrated

models that minimize

board space by minimizing

the external parts.

180° commutation reduces noise

and improves efficiency

through advance

control.

LCD Driver ML94xx Series

P.

BLDC Motor Driver BD16805FV-M

P.25 SSOP-B

DPAK

Optimized for a variety of drive
circuits (i.e. motor drive).
Advanced processes
provide low ON resistances.

MOSFET 40V Series60V Series

P.47, P.54 to 55 P.48 to 50, P.60 to 64

PMDU

Select from among 4 different

series to meet application

requirements for VF and IR.

Schottky Barrier DiodesUltra Low ILow VF SeriesR Series

Built-in low ON resistance

MOSFET improves

efficiency while

reducing heatgeneration.

H-Bridge Driver BD16936EFV-M

P.25 HTSSOP-B

P.

PSR

5W rated power guaranteed in

the ultra-low-resistance



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High power Ultra Low

Ohmic Chip Shunt Resistors PSR Series

Memory Op.Amps

Comparators

Voltage Detectors

(Reset IC s)

Voltage

Regulator

LIN

Transceiver

H-Bridge

Driver

BLDC Motor

Driver

CAN

Transceiver

IPD

IPD

MCU

Power

P rotection

LCD Driver

Battery

Damper Damper

Blower

Damper Damper

Damper Damper

Defogger

Seat Heaters

Temperature Sensor

Ext. Air Temp. Sensor

Sunlight Sensor

Damper×

Signal

conditioner

Three-Phase Inverter Circuit

I/O

Protection

MOSFET SBD Low OhmicResistor

MOSFETLow Ohmic

Resistor

Bi-Zener

Technology for the automotive future