BTS70021EPPXUMA1 - 21A Smart High-Side Switch PG-TSDSO-14 | Infineon
N.º de pieza: BTS70021EPPXUMA1 ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.45 | $2,45 |
| 10 | $2.18 | $21,80 |
| 100 | $1.84 | $184,00 |
| 500 | $1.55 | $775,00 |
| 1.000 | $1.32 | $1.320,00 |
BTS70021EPPXUMA1 Descripción general
A smart high-side switch is a semiconductor relay that connects a DC load (lamp, solenoid, motor, heater) to the positive supply rail while providing both load-driving current and on-board protection. Compared with discrete MOSFET plus fuse designs, an integrated high-side switch reduces PCB area, eliminates external sense resistors, and delivers standardized diagnostic signals (current sense, fault, temperature) to a microcontroller over a single-wire or SPI-style interface. The high-side topology allows easy ground-referenced load wiring, which is the conventional choice in 12 V automotive body and powernet domains.
Key functional features of the BTS70021EPPXUMA1 include very low standby current, PWM-capable input, current sense pin with proportional analog load-diagnostic output, and dedicated fault feedback. The ReverSave reverse-polarity block survives accidental battery mis-connection without destroying the switch. The PG-TSDSO-14-22 exposed-pad package achieves a junction-to-ambient thermal resistance on the order of 30-40 C/W with proper board layout, allowing continuous high-current operation at moderate ambient temperatures.
Architecturally, the BTS70021EPPXUMA1 uses a vertical N-channel DMOS output stage driven by a charge pump and a sophisticated analog protection/state machine. The state machine implements latched fault handling, restart-after-cool-down, and open-load detection in both on and off states. The analog current-sense output (IS pin) gives the ECU a ratiometric image of the load current, enabling limp-home functions and predictive maintenance.
Typical applications include automotive lighting (headlamp, tail lamp, DRL, interior lighting), seat heating, door modules, auxiliary power outlets, and body-control modules where a single ECU drives multiple resistive or inductive loads. The 21 A rating covers high-power lamps and PTC heater mats. Industrial 12 V/24 V systems with similar power levels can also use this part.
When designing with this part, keep input and output traces short and use wide copper pours tied to the exposed pad to manage thermal rise. Place the microcontroller sense-input trace away from switching nodes to avoid coupling. Use a 100 nF ceramic bypass close to Vbb, and follow Infineon application notes for PWM frequencies above 1 kHz.
This page combines distributor pricing, drop-in cross-brand options, and practical design guidance not found in the datasheet alone.
Alternativas directas para BTS70021EPPXUMA1 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con BTS70021EPPXUMA1 (mismo factor de forma y huella) — difiere en Package, Topology, Diagnostic Output, Operating Temperature, Product Type.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
BTS7002-1EPP
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
BTS7002-2EPP
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
BTS7002-1EPA
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
TPS4H160-Q1
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ITS4142NHUMA1
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$0.88 / unidad
Ver hoja de datos →ITS41K0SMENHUMA1
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$0.59 / unidad
Ver hoja de datos →BTS70021EPPXUMA1 Valores máximos y características eléctricas
| Product Family | PROFET+2 12V |
| Topología | Smart High-Side Switch, N-Channel MOSFET |
| Maximum Continuous Load Current | 21 A |
| On-State Resistance (RDS(on)) | 2.6 mOhm typical |
| Operating Supply Voltage (Vbb) | 6 V to 18 V |
| Transient Supply Voltage | 28 V (load dump tolerant) |
| Current Sense Output (IS) | Analog proportional load current |
| Fault Output (DEN/IN) | Yes, latched |
| Reverse Polarity Protection | Yes (ReverSave) |
| Overload Protection | Yes (current limit) |
| Short-Circuit Protection | Yes (latched) |
| Over-Temperature Protection | Yes (thermal shutdown with restart) |
| Over-Voltage Protection (Vbb clamp) | Yes |
| Load Dump Clamp Voltage | 41 V typical |
| Open-Load Detection | Yes (on-state and off-state) |
| Rango de temperatura de funcionamiento | -40 C to +150 C junction |
| Encapsulado | PG-TSDSO-14-22 (exposed pad) |
| Tipo de montaje | Surface Mount |
| Qualification | AEC-Q100 automotive qualified |
| Estado RoHS | Compliant (Green Product) |
Configuración de pines de BTS70021EPPXUMA1
| Pin 1 | OUT — Switched output to load |
| Pin 2 | OUT — Switched output to load |
| Pin 3 | Vbb — Battery supply input (6-18 V) |
| Pin 4 | Vbb — Battery supply input (6-18 V) |
| Pin 5 | IS — Current sense analog output |
| Pin 6 | IN — Logic input / PWM control |
| Pin 7 | DEN — Diagnostic enable / fault output |
| Pin 8 | GND — Ground reference |
| Pin 9 | NC — Not connected |
| Pin 10 | NC — Not connected |
| Pin 11 | NC — Not connected |
| Pin 12 | NC — Not connected |
| Pin 13 | NC — Not connected |
| Pin 14 | NC — Not connected |
Área de funcionamiento seguro - BTS70021EPPXUMA1
Aplicaciones típicas
BTS70021EPPXUMA1 es adecuado para 6 aplicacións: Automotive LED Headlamp Driver, Body Control Module Power Outputs, PTC Seat Heater Driver, Auxiliary 12V Power Outlet, 12V DC Motor Control (Wipers, Mirrors, Seat Adjust), Rear Lighting Module (Tail, Brake, Reverse).
Automotive LED Headlamp Driver
The BTS70021EPPXUMA1 fits automotive LED headlamp modules because its 21 A continuous rating covers high-beam and matrix-LED strings at 12 V. Its 2.6 mOhm RDS(on) keeps conduction loss below 1.2 W at 21 A, easing thermal design in sealed headlamp housings. The analog current-sense (IS) pin lets the body-control ECU implement closed-loop current regulation, which is essential for LED brightness consistency and lifetime. ReverSave protects the module against battery-misconnection during service. Engineers can drive the IN pin directly from an ECU PWM output to implement dynamic turn-indicator or DRL dimming.
Recomendado
Body Control Module Power Outputs
In a body-control module (BCM), the BTS70021EPPXUMA1 acts as a smart high-side driver for door-lock motors, mirror heaters, and accessory lighting. Its 21 A ceiling allows BCM designers to consolidate several discrete MOSFETs into one protected channel, reducing PCB area and BOM count. The diagnostic feedback to the ECU supports limp-home functions when a load faults. The PG-TSDSO-14-22 footprint fits standard BCM layouts, and the integrated ReverSave eliminates an external reverse diode. AEC-Q100 qualification allows direct deployment in passenger-vehicle BCMs without re-qualification.
Recomendado
PTC Seat Heater Driver
The BTS70021EPPXUMA1 drives PTC seat-heater mats, which typically draw 5-15 A inrush current at 12 V. Its 21 A continuous rating comfortably covers the steady-state current, and the integrated current-limit protects the mat against overcurrent conditions. The diagnostic IS pin allows the HVAC ECU to implement overtemperature detection by sensing abnormal current drop as PTC resistance rises, providing a safety interlock. ReverSave and overvoltage clamp survive automotive load-dump and reverse-battery events without external protection components.
Recomendado
Auxiliary 12V Power Outlet
The BTS70021EPPXUMA1 is well-suited for cigarette-lighter-style auxiliary outlets that must deliver 10-20 A continuous current to inverters or 12 V appliances. Its integrated short-circuit and overload protection replaces the traditional fuse, enabling resettable fault handling that improves serviceability. The exposed thermal pad supports the dissipation from continuous 20 A operation in confined console spaces. IS-pin current feedback allows the BCM to log load energy use for vehicle power management.
Recomendado
12V DC Motor Control (Wipers, Mirrors, Seat Adjust)
Driving small 12 V DC motors in mirrors, seat adjusters, or auxiliary pumps is straightforward with the BTS70021EPPXUMA1 thanks to its high inrush-current capability and embedded protection. The high-side configuration simplifies wiring (loads return to chassis ground) and the integrated clamp handles the inductive kickback of motor commutators. The ECU can PWM the input for variable-speed applications such as mirror-folding or seat-position slow-traverse. ReverSave protects the channel during battery mis-connection events during service.
Recomendado
Rear Lighting Module (Tail, Brake, Reverse)
The BTS70021EPPXUMA1 can power combined rear-lamp clusters including tail, brake, and reverse functions. Its 21 A headroom allows a single channel to drive multiple parallel bulbs or LED strings in the lamp cluster, reducing harness and connector count. Integrated overtemperature protection prevents the housing from overheating if a load fails short. The IS pin current-sense output supports lamp-outage detection by the BCM for driver-dashboard warning lamps, an increasingly common regulatory requirement in passenger vehicles.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para BTS70021EPPXUMA1 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | BTS7002-1EPP | BTS7002-2EPP | BTS7002-1EPA | TPS4H160-Q1 | ITS4142NHUMA1 |
|---|---|---|---|---|---|---|
| Package | PG-TSDSO-14-22 (exposed pad) | PG-TSDSO-14-22 - same | PG-TSDSO-14-22 - same | PG-TSDSO-14-22 - same | HTSSOP-14 PowerPAD - compatible | PG-TSDSO-14-22 - same |
| Brand | Infineon | Infineon - same | Infineon - same | Infineon - same | Texas Instruments - different | Infineon - same |
| Supply Voltage Range | 6 V to 18 V | 6 V to 18 V | 6 V to 18 V | 6 V to 18 V | 4 V to 40 V | 6 V to 18 V |
| Reverse Polarity Protection | Yes (ReverSave) | Yes | Yes | Yes | Yes | Yes |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes | Yes | No (industrial) |
| Current Sense Output | Analog IS pin | Analog IS pin | Analog IS pin | Different diagnostic | Analog CS pin | Analog IS pin |
| Operating Temperature | -40 C to +150 C | -40 C to +150 C | -40 C to +150 C | -40 C to +150 C | -40 C to +125 C | -40 C to +125 C |
Diferenciadores clave
- Lower RDS(on) than cross-brand alternatives in same class (frente a TPS4H160-Q1)
- ReverSave integrated reverse polarity protection (frente a BTS7002-2EPP)
- Higher current rating than industrial PROFET variants (frente a ITS4142NHUMA1)
- AEC-Q100 automotive grade versus non-automotive alternatives (frente a ITS4142NHUMA1)
Notas de diseño
At 21 A continuous, the BTS70021EPPXUMA1 dissipates approximately I^2 * R = 21^2 * 0.0026 = 1.15 W (estimated, using typical RDS(on) at room temperature). With the exposed pad soldered to 1 sq-in of 2 oz copper on a standard FR4 PCB, junction-to-ambient thermal resistance is on the order of 35-40 C/W, yielding a 40-46 C rise above ambient. For continuous 21 A operation above 85 C ambient, increase copper area or reduce current. Forced-air cooling is recommended for sealed lamp housings.
Place a 100 nF ceramic bypass capacitor as close as possible to the Vbb pins (3 and 4) to decouple the high di/dt transient currents from the bond wires. Use wide copper pours on both Vbb and OUT traces to carry 21 A with minimal voltage drop (10 mil/A rule of thumb). The exposed thermal pad must be soldered to a copper island with thermal vias for heatsinking. Keep the IS-trace away from switching nodes to prevent capacitive coupling that distorts the analog sense signal.
Do not exceed the 28 V transient supply rating - although the device has a load-dump clamp at ~41 V, sustained overvoltage will damage the silicon. Ensure the IN pin logic levels match the ECU 3.3 V or 5 V GPIO. The IS pin output is referenced to ground and must not be pulled above the absolute maximum rating. When driving inductive loads (motors, solenoids), add an external TVS or rely on the internal clamp, but verify the energy does not exceed the avalanche rating of the part.
Route the high-current OUT trace directly under the device to minimize the loop area between source and load. Use multiple vias in parallel between the exposed pad and the inner-plane heatsink to reduce thermal resistance. Place the microcontroller side of the IS-trace on a different layer with ground isolation. Avoid routing digital signal traces directly above or below the OUT power trace to prevent crosstalk and EMI. Follow Infineon PROFET+2 application note PCB layout guidelines for the PG-TSDSO-14-22 footprint.
Información de cumplimiento
RoHS compliant Green Product per Infineon datasheet. AEC-Q100 qualified for automotive use. REACH and conflict-minerals statements available from Infineon product compliance portal.
