Packaging information
| Package | Pins TSSOP (PW) | 20 |
| Operating temperature range (°C) -40 to 85 |
| Package qty | Carrier 2,000 | LARGE T&R |
Features for the TMP814
- Predriver for Single-Phase Full-Wave Drive
- PNP-NMOS is Used as an External Power TR,
Enabling High-Efficiency Low-Consumption
Drive by Means of the Low-Saturation Output
and Single-Phase Full-Wave Drive (PMOS-
NMOS Also Applicable)
- PNP-NMOS is Used as an External Power TR,
- External PWM Input Enabling Variable Speed
Control- Separately-Excited Upper Direct PWM (f = 25
kHz) Control Method, Enabling Highly Silent
Speed Control
- Separately-Excited Upper Direct PWM (f = 25
- Compatible with 12-V, 24-V, and 48-V Power
Supplies - Current Limiter Circuit Incorporated
- Chopper Type Current Limit at Start
- Reactive Current Cut Circuit Incorporated
- Reactive Current Before Phase Change is Cut
to Enable Silent and Low-Consumption Drive
- Reactive Current Before Phase Change is Cut
- Minimum Speed Setting Pin
- Minimum Speed Can Be Set With External
Resistor. Start Assistance Circuit Enables Start
at Extremely Low Speed.
- Minimum Speed Can Be Set With External
- Constant-Voltage Output Pin for Hall Bias
- Lock Protection and Automatic Reset Functions
Incorporated - FG (Rotation Speed Detection) and RD (Lock
Detection) Output
Description for the TMP814
The TMP814 is a single-phase bipolar variable speed fan motor predriver that works with an external PWM signal. A highly efficient, quiet and low-power consumption motor driver circuit, with a large variable speed, can be implemented by adding a small number of external components.
This device is optimal for driving large scale fan motors (with large air volume and large current) such as those used in servers and consumer products.