Microchip

HV9150

Piezoelectric Micropump Driver Reference Design

Topologie: Boost
Eingangsspannung (min.): 3.70 V
Eingangsspannung (max.): 3.70 V
Schaltfrequenz (min.): 40.00 kHz
Schaltfrequenz (max.): 400.00 kHz
Ausgang 1: 250.00 V / 0.010 A

Beschreibung

In medical devices for precision controlled drugdelivery, such as infusion pumps, insulin pumps or nebulizers, piezoelectric micropumps offer anattractive alternative to standard pumps. Piezoelectric micropumps are small, lightweight, low power, low cost, and accurate. This application note describes the implementation of a basic driver circuit for driving a piezoelectricmicropump with flow control in an example of fluid delivery. The described system includes a control board, a high voltage driver board, and an mp6 Piezoelectric Diaphragm Micropump.

Merkmale

  • Wide output voltage range: 6V to 500V
  • Low input voltage: 2.7V
  • 5W maximum output power with external MOSFET driver
  • Built-in charge pump converter for the gate driver
  • Programmable switching frequency from 40kHz to 400kHz
  • Four programmable duty cycles from 50% to 87.5%
  • FB return ground switch for power savings applications
  • Built-in delay timer for internal protection
  • Non-isolated DC/DC converter
  • Processed with HVCMOS® technology

Artikel

  Artikel Nr. SPEC Produktserie L
(µH)
IR
(A)
ISAT
(A)
RDC typ.
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
Montageart Muster
74437324068 PDF WE-LHMI SMT Speicherdrossel 6.8 1.75 3.5 150 172 29 SMT