Datasheet INN5375F, INN5376F, INN5377F, INN5396F, INN5475F, INN5476F, INN5477F, INN5496F (Power Integrations) - 3

InnoSwitch5-Pro Pin Functional Description ISENSE (IS) Pin (Pin 1)
Connection to the power supply return output terminals. An external
V 15 14 NC
current sense resistor should be connected between this and the
NC 16 13 NC
SECONDARY GROUND pin.
BPP 17 12 NC HSD 18 11 FWD SECONDARY GROUND (GND) (Pin 2) 10 VOUT 9 SR
Ground reference for the secondary IC. Note this is not the power
S 19 8 VB/D
supply output ground due to the presence of the sense resistor
7 uVCC
between this and the ISENSE pin.
6 SDA 5 SCL NC Pin (Pin 3) 4 BPS 3 NC
Leave it open. Should not be connected to any other pins.
2 GND D 28 1 IS SECONDARY BYPASS (BPS) Pin (Pin 4)
It is the connection point for an external bypass capacitor for the secondary IC supply.
I2C Clock (SCL) Pin (Pin 5)
PI-9404-081022 I2C serial communication protocol clock line sourced by the Bus Figure 5. Pin Configuration. master.
I2C Serial Data (SDA) Pin (Pin 6)
I2C serial communication protocol data line sourced by the Bus
UNDER/OVER INPUT VOLTAGE (V) Pin (Pin 15)
master. A high-voltage pin connected to the AC or DC side of the input bridge
External VCC Supply (uVCC) Pin (Pin 7)
for detecting under and overvoltage conditions at the power supply This is 3.6 V supply for an external control er. input. When connected to the AC side of the bridge, a high-voltage switch is opened when not sensing to reduce power consumption.
VBUS Series Switch Drive and Load Discharge (VB/D) Pin (Pin 8)
This pin should be tied to GND to disable UV/OV protection. VBUS enable and driver for NMOS gate for VOUT to VBUS series pass FET(s). This pin is also used to discharge output load voltage (VBUS).
NC Pin (Pin 16)
Leave open or connect to SOURCE pin or BPP pin.
SYNCHRONOUS RECTIFIER DRIVE (SR) Pin (Pin 9)
Gate driver output and connection to external SR FET gate.
PRIMARY BYPASS (BPP) Pin (Pin 17)
The connection point for an external bypass capacitor for the primary
OUTPUT VOLTAGE (VOUT) Pin (Pin 10)
IC supply. This is also the ILIM selection pin for choosing standard Connected directly to the output voltage providing current for the ILIM or ILIM+1. secondary IC and sense for output voltage regulation. This pin also has an active/programmable pul -down current source.
HSD Pin (Pin 18)
HSD pin should be tied to ground.
FORWARD (FWD) Pin (Pin 11)
The connection point to the switching node of the transformer output
SOURCE (S) Pin (Pin 19)
winding provides information on the primary switch timing plus These pins are the power switch source connection. It is also ground providing power for the secondary IC when VOUT is below a reference for primary BYPASS pin. threshold value.
DRAIN (D) Pin (Pin 28) NC Pin (Pin 12-14)
This pin is the power switch drain connection. Leave it open. Should not be connected to any other pins.
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Rev. C 01/24 www.power.com