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PDF PX3517 Data sheet ( Hoja de datos )
| Número de pieza | PX3517 | |
| Descripción | Synchronous Rectified Buck MOSFET driver IC | |
| Fabricantes | Infineon | |
| Logotipo |  |
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Revision 2.4, 2015-10-20
1 page  
3 Description
3.1 Pinout
PX3517
Description
Figure 2 Pinout, numbering and pin names (transparent top view)
Note: Signals marked with “#” are active low.
Table 2
Pin No.
1
2
3
4
6
8
10
I/O Signals
Name Pin Type Buffer Type Function
UGATE O
Analog
Upper gate drive output
Connect to high side N-channel power MOSFET gate.
BOOT O
Analog
Floating bootstrap supply pin for upper gate drive
Connect the bootstrap capacitor1 between this pin and the
PHASE pin. The bootstrap capacitor provides the charge to
turn on the upper MOSFET. See the Internal Bootstrap
Device section herein for guidance in choosing the
capacitance value.
THW# O
Analog
Open drain output
Connect this pin to 3.3V through a resistor2. Once the
thermal protection threshold is tripped, the THW# pin is
pulled down. Leave open if not used.
PWM I
LGATE O
3.3V Logic
Analog
PWM drive logic input
Connect this pin to the PWM out from the controller IC.
Lower gate drive output
Connect to low side N-channel power MOSFET gate.
RT O
Analog
Thermal warning threshold selection pin
Connect this pin to an external resistance2 to GND. Used
to set the thermal warning threshold. If not used it can be
left floating.
PHASE I
Analog
Return path for high side MOSFET driver
Connect this pin to the source of the upper MOSFET and
the drain of the lower MOSFET. This pin provides a return
path for the upper gate drive.
1 See section 5.2 for guidance in choosing capacitance value
2 See section 5.5 for resistor value selection
Datasheet
5
Revision 2.4, 2015-10-20
5 Page 
PX3517
Electrical specification
Table 9
Logic Inputs And Threshold
Parameter
Symbol
THW#
PWM
Programmable
Warning
Temperature range
Thermal warning
accuracy
Hysteresis
On resistance
Leakage current
Input low
Input high
Input resistance
Open voltage
Tri-state shutdown
window
TPFPT
V PWM_LT TTB
TB
V PWM_HT TTB
TB
R IN-PWMT TTB
TB
V PWM_OT TTB
TB
V PWM_ST TTB
TB
Min.
70
Values
Typ. Max.
– 130
Unit
°C
Test conditions
-10 – +10
–
–
–
–
2.5
-
–
1.2
10
37.5
0.1
–
–
2.06
1.6
–
–
80
5
0.8
–
–
–
2.0
Ω
μA
V
kΩ
V
ILOAD = 8mA
V fallingPWMT TTB
TB
V risingPWMT TTB
TB
V = 1 VPWMT TTB
TB
V PWM_OT TTB
TB
–
Table 10 Timing Characteristics
Parameter
Symbol
Upper Gate (UGATE) Output
Shutdown hold off time
UGATE rise time
UGATE fall time
Tri-state to high propagation
delay
UGATE turn-on propagation
delay
UGATE turn-off propagation
delay
Lower Gate (LGATE) Output
Shutdown hold-off time
LGATE rise time
LGATE fall time
Tri-state to low propagation
delay
LGATE turn-on propagation
delay
LGATE turn-off propagation
delay
Thermal warning
Thermal warning propagation
delay
tSSHD_U
tr_U
tf_U
tPDTS_U
tPDH_U
tPDL_U
tSSHD_L
tr_L
tf_L
tPDTS_L
tPDH_L
tPDL_L
tD_THW#
Values
Min. Typ. Max.
Unit Test conditions
50 ns No load
10 Note4, 3nF load
10 Note4, 3nF load
15 No load
15 No load
20 No load
50 ns No load
10 Note4, 3nF load
5 Note4, 3nF load
15 No load
15 No load
7 No load
10 s
4 Parameter verified by design, not 100% tested in production.
Datasheet
11
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11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet PX3517.PDF ] | |
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