The SPI interface (enabled by SEL2 pin = H) can work up to 5 MHz in 8-bits (SEL1 = L), or 16-bits (SEL1 = H)

with a parity check and extended diagnostic (DC/DC operation, case overtemperature, SPI Communication Fail,

and Power Good) information. In SPI mode the daisy chain is allowed, and both the OUT_EN signal and the MCU

freeze detection by watchdog are available. If enabled (WD_EN voltage above 25% of VREG), the watchdog

circuitry generates an internal reset on expiry of the internal watchdog timer. The watchdog timer reset can be

achieved by applying a negative pulse on the WD pin. The watchdog timer can be programmed by the set voltage

on the WD_EN pin.

The internal LED matrix driver circuitry (4 rows, 2 columns) allows the efficient driving of the 8 LEDs reporting the

on/off status of each of the 8 outputs. The VREG pin supplies both the logic output buffers and LED matrix. The

100 mA output current capability of the integrated step-down (featuring overload and short-circuit conditions) can

be used to supply both the VREG pin and other application components (for example: digital isolators or

optocouplers).

Active per-channel current limitations (0.7 A and 1.0 A for IPS8200HQ and IPS8200HQ-1, respectively),

combined with channel-independent thermal shutdown, protect the circuitry against overload and short circuits.

Built-in thermal shutdown protects each channel from overtemperature and overload: each overheated channel

automatically turns OFF after its junction temperature triggers the protection threshold (TTSD). The channel turns

back ON if its junction temperature decreases lower than the restart threshold (TR). An additional case

temperature sensor protects the whole chip against overtemperature: if the case temperature triggers the TCSD

threshold then overloaded channels are turned OFF and restart only when the case temperature decreases to the

reset threshold (TCR). Non-overloaded channels continue to operate normally.

Loss of GND protection guarantees automatic turn-off of the outputs in case of a ground wire break.

Dedicated diagnostic pins report the detection of: invalid voltage range on VCC rail (PG pin),

caseovertemperature (TWARN pin), SPI fault, or junction overtemperature (FAULT pin).

IPS8200HQ, IPS8200HQ-1

DS14313 - Rev 2

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