General outline

The TC7717FTG is a DC-AC control interface IC. It is used for photovoltaic system power conditioner.

This device incorporates input and output pins of controller signal, 12-bit ADC, differential circuit for detection,

S/P interface, and Boost-ICNote1 interface.

Features

 Process: C-MOS

 Internal reference power supply: 1.5 V (typ.) and 3.0 V (typ.)

 Input voltage

AVDD and DVDD: 3.3 V±0.3 V

ADVREF: 3.0 V (typ.)

 UVLO function by AVDD pin: Malfunction prevention in under voltage

Release: 2.7 V (max)

Stop: 2.2 V (min)

 Built-in 12-bit SAR AD converter (ADC core0 and core1)

Operation of 3.3 V single power supply, conversion time 1 μs

Main CLK: 40 MHz (typ.), External CLK of PLL reference: 10 MHz (typ.)

 Sampling function

AC current (AIN0 core0), DC voltage (AIN0 core1)

System voltage VU-VO (AIN1 core0), VW-VO (AIN1 core1)

 Detection function

AC/DC current component detection (IDCERR), system voltage

detection (VUO_OUT)

System zero cross detection (L_HZO)

DC current detection (I_INV)

 Analog (comparator detection threshold) monitor function

 S/P interface input (slave side)

Comparator threshold correction (±10 )

DC over current (DC_OC_REF), DC over voltage (DC_OV_REF)

AC over current (AC_OC_REF), AC limit current (AC_CL_REF)

Analog (comparator detection threshold) monitor selection

DC over current (DC_OC), DC over voltage (DC_OV)

AC over current (AC_OC), AC limit current (AC_CL)

 Boost-IC interface (target device T5DK1FG, master side)

ADC start signal (ADST), data transfer clock (ADCLK)

ADC sampling data signal (DOUT0 and DOUT1)

 External reset input pin: C-MOS input

 Package QFN40 (6.0 mm × 6.0 mm, 0.5 mm Pitch)

Note 1: ”Boost-IC”: Dedicated controller (T5DK1FG)