STWBC2-HP datasheet(10/96 Pages) STMICROELECTRONICS

Part #	STWBC2-HP

Description	Digital controller for wireless battery charger transmitters

PDF	96 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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10 / 96 page

Figure 11. Analog monitors

The mux channel assignment is described below:

Table 2. ADC MUX assignment

Channel

ADC mux 0

ADC Mux 1

ADC mux 2

VIN voltage (In_V)

Bridge voltage (Bridge_V)

VIN current (In_I)

Bridge current (Bridge_I)

Ring node voltage (Ring_V)

USB DP pin voltage

(Usb_dp_V)

Voltage demodulator filter output

(Demod_V)

Current demodulator filter output

(Demod_I)

USB DM pin voltage

(Usb_dm_V)

VDD voltage (Buck_V)

VDD of gate driver (GD_vdd)

Reference voltage of ring

node circuit (Vref_ring)

Reference voltage of current sensor

(Vref_Isns)

Reference voltage of demodulators

(Vref_demod)

Each ADC mux output voltage ranges from 0 V to 2 V and channel selection time is 0.2 µs typ.

2.1.4.1

VIN voltage monitor (In_V)

The VIN voltage monitor provides a scaled down low pass filtered signal to the ADC mux.

STWBC2-HP

Analog AFE functions

DS13825 - Rev 1.0

page 10/96

STWBC2-HP Datasheet(PDF) 10 Page - STMicroelectronics