TPS1HC30-Q1 デバイスは各種の保護機能を搭載したハイサイド・パワー・スイッチで、NMOS パワー FET とチャージ・ポンプを内蔵しており、各種負荷をインテリジェントに制御することを目標にしています。高精度の電流センスとプログラマブル電流制限機能により、このデバイスを市場で差別化できます。
入力ピンのロジック HIGH スレッショルド (VIH) が 1.5V と低いため、最低 1.8V の MCU を使用できます。電流検出精度が高いため、追加キャリブレーションなしでもより効果的なリアルタイム監視とより正確な診断が可能です。外部の高精度電流制限機能により、アプリケーションごとに電流制限値を設定できます。本デバイスは、スタートアップまたは短絡状態時に突入電流を効果的にクランプすることで、システムの信頼性を大きく向上させます。TPS1HC30-Q1 デバイスは、省電力電球、LED、リレー、ソレノイド、ヒーターなど、幅広い種類の抵抗性、誘導性、容量性負荷のためのハイサイド・パワー・スイッチとして使用できます。
部品番号 | パッケージ(1) | 本体サイズ (公称) |
---|---|---|
TPS1HC30-Q1 | PWP (HTSSOP、14) | 4.40mm × 5.00mm |
Changes from Revision * (July 2022) to Revision A (December 2022)
PIN | TYPE | DESCRIPTION | |
---|---|---|---|
NO. | NAME | ||
1 | GND | Power | Ground of device. Connect to resistor-diode ground network to have reverse battery protection. |
2 | EN | I | Input control for channel activation, internal pulldown |
3 | DIAG_EN | I | Enable-disable pin for diagnostics, internal pulldown |
4 | FAULT | O | Open-drain global fault output. Referred to FAULT, FLT, or fault pin. |
5 | LATCH | I | Thermal shutdown behavior, latch-off or auto-retry, internal pulldown |
6 | SNS | O | Output corresponding sense value based on sense ratio |
7 | ILIM | O | Adjustable current limit. Short to ground or leave floating if external current limit is not used. |
8, 11, 14 | NC | N/A | No internal connection |
9, 10 | VOUT | Power | Output of high-side switch, connected to load |
12, 13 | VBB | Power | Power supply |
Thermal Pad | Pad | — | Thermal Pad, internally shorted to ground |
Recommended Connection for Unused Pins
The TPS1HC30-Q1 is designed to provide an enhanced set of diagnostic and protection features. However, if the system design only allows for a limited number of I/O connections, some pins can be considered as optional.
PIN NAME | CONNECTION IF NOT USED | IMPACT IF NOT USED |
---|---|---|
SNS | Ground through 1-kΩ resistor | Analog sense is not available. |
LATCH | Float or ground through RPROT resistor | With LATCH unused, the device auto-retries after a fault. If latched behavior is desired, but the system describes limited I/O, it is possible to use one microcontroller output to control the latch function of several high side channels. |
ILIM | Float | If the ILIM pin is left floating, the device is set to the default internal current-limit threshold. This impact is considered a fault state for the device. |
DIA_EN | Float or ground through RPROT resistor | With DIA_EN unused, the analog sense, open-load, and short-to-battery diagnostics are not available. |
MIN | MAX | UNIT | ||
---|---|---|---|---|
Maximum continuous supply voltage, VBB | 28 | V | ||
Load dump voltage, VLD | ISO16750-2:2010(E) | 35 | V | |
Reverse Polarity Voltage | Maximum duration of 3 minutes and with the application circuit | –18 | V | |
Enable pin current, IEN | Enable pin current, IEN | –1 | 20 | mA |
Enable pin voltage, VEN | –1 | 7 | V | |
Diagnostic Enable pin current, IDIA_EN | –1 | 20 | mA | |
Diagnostic Enable pin voltage, VDIA_EN | –1 | 7 | V | |
Sense pin current, ISNS | –100 | 10 | mA | |
Sense pin voltage, VSNS | –1 | 5.5 | V | |
Latch pin current, ILATCH | -1 | 10 | mA | |
Latch pin voltage, VLATCH | –1 | 7 | V | |
FLT pin current, IFLT | -30 | 10 | mA | |
FLT pin voltage, VFLT | –0.3 | 7 | V | |
Reverse ground current, IGND | VBB < 0 V | –50 | mA | |
Storage temperature, Tstg | –65 | 150 | °C |