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UM1691 Datenblatt(PDF) 13 Page - STMicroelectronics

Teilenummer UM1691
Bauteilbeschribung  The EVAL6470H-DISC can be used together
PDF  41 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
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UM1691 Datenblatt(HTML) 13 Page - STMicroelectronics

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UM1691
General description
41
4.2.1
Charge pump
The L6470 device uses an internal charge pump for driving correctly the integrated
MOSFETs, a voltage higher than the motor power supply. The charge pump is obtained
through an oscillator and few external components.
Figure 8. Charge pump circuitry
Table 3. L6470 recommended operating conditions
Symbol
Parameter
Test condition
Value
Unit
VDD
Logic Interface supply voltage
3.3
V
VS
Motor supply voltage
VSA = VSB = VS
8 ÷ 45
V
VOUT_diff
Differential between voltage VSA, OUTI1A, OUT2A,
PGND and VSB, OUT1B, OUT2B, PGND pins
VSA = VSB = VS
Up to 45
V
VREG in
Logic supply voltage
VREG internal
3
V
VADC
Integrated ADC input voltage range (ADCIN pin)
0 ÷ VREG
V



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