% !TEX program = pdflatex


\documentclass{standalone}
\usepackage{amsmath}
\usepackage[utf8]{inputenc}
\usepackage[american]{circuitikz}
\usetikzlibrary{positioning, calc, arrows.meta}

\begin{document}

\begin{tikzpicture}[american, font=\sffamily\small, >=Latex]

    % ==========================================
    % 1. ENTRADAS A LA IZQUIERDA (CPV Cell)
    % ==========================================
    \draw (0,4) node[left, font=\bfseries] {HCPV Cell (+)} to[short, o-*] (2,4)
          (0,0) node[left, font=\bfseries] {HCPV Cell (-)} to[short, o-*] (2,0) node[ground]{};

    % ==========================================
    % 2. PRIMERA ETAPA: DIVISOR DE VOLTAJE (Voc)
    % ==========================================
    \draw (2,4) to[R, l=$R_1\ (10\text{ k}\Omega)$, *-*] (2,2)
                to[R, l=$R_2\ (10\text{ k}\Omega)$, *-*] (2,0);
    
    % Salida de Voc directamente hacia la derecha
    \draw (2,2) to[short, *-o] (11.5,2) 
          node[right, font=\bfseries\color{blue!80!black}] {To ADS122C04 AIN3 ($V_{oc}$)};

    % ==========================================
    % 3. SEGUNDA ETAPA: TRANSISTOR Q1 (INVERTIDO EN Y) Y GATE DRIVER
    % ==========================================
    % MOSFET Q1 invertido en el eje Y mediante yscale=-1
    \draw (5,3) node[nmos, xscale=-1 ,yscale=-1] (Q1) {};
    \node[right=1cm of Q1] {\textbf{$Q_1$}\\[-2pt]\scriptsize DMN62D0UW-7};

    % Gate Driver MIC5019 (Directamente ARRIBA del MOSFET)
    \node[draw, rectangle, rounded corners=3pt, fill=blue!10, minimum width=2.4cm, minimum height=1.2cm, align=center, line width=0.8pt] 
          (mic) at (5.95,5.5) {\textbf{Gate Driver}\\\footnotesize MIC5019};

    % Entrada de señal de control (A LA DERECHA del Gate Driver)
    \draw[<-, line width=1pt, color=blue!80!black] (mic.east) -- (10.0, 5.5) 
          node[right, font=\bfseries] {From ESP32 (\texttt{PIN\_VOC})};

    % Conexión de salida del Driver a la Gate del MOSFET
    \draw[->, line width=0.8pt] (mic.south) |- (Q1.G);

    % Bus CPV(+) conectado al terminal superior del MOSFET
    \draw (2,4) -- (5,4) -- (Q1.S);

    % Conexión del terminal inferior del MOSFET a la Resistencia Shunt
    \draw (Q1.D) -- (5,1.8)
          to[R, l=$R_{\text{shunt}}\ (75\text{ m}\Omega)$, *-*] (5,0) -- (2,0);

    % ==========================================
    % 4. TERCERA ETAPA: SHUNT Y AMPLIFICADOR AD8418
    % ==========================================
    % Amplificador AD8418 (A LA DERECHA de la Shunt)
    \node[draw, rectangle, rounded corners=3pt, fill=orange!10, minimum width=2.5cm, minimum height=1.4cm, align=center, line width=0.8pt] 
          (ad) at (8.8,0.9) {\textbf{AD8418}\\[-2pt]\footnotesize Current Sense Amp};

    % Lectura Diferencial sobre la Shunt
    \draw (5,1.8) -- (7.0,1.8) |- (ad.west |- 0,1.2);
    \draw (5,0.2) -- (7.0,0.2) |- (ad.west |- 0,0.6);

    % Salida de Isc directamente hacia la derecha
    \draw[->, line width=1pt] (ad.east) -- (11.5,0.9) 
          node[right, font=\bfseries\color{orange!80!black}] {To ADS122C04 AIN0/1 ($I_{sc}$)};

\end{tikzpicture}

\end{document}